First observation of the decay B+ → π+ μ+ μ-

R. Aaij; C. Abellan Beteta; A. Adametz; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; Y. Amhis; L. Anderlini; J. Anderson; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; S. Bachmann; J. J. Back; C. Baesso; V. Balagura; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; W. Barter; A. Bates; C. Bauer; Th Bauer; A. Bay; J. Beddow; I. Bediaga; S. Belogurov; K. Belous; I. Belyaev; E. Ben-Haim; M. Benayoun; G. Bencivenni; S. Benson; J. Benton; A. Berezhnoy; R. Bernet; M. O. Bettler; M. Van Beuzekom; A. Bien; S. Bifani; T. Bird; A. Bizzeti; P. M. Bjørnstad; T. Blake; F. Blanc; C. Blanks; J. Blouw; S. Blusk; A. Bobrov; V. Bocci; A. Bondar; N. Bondar; W. Bonivento; S. Borghi; A. Borgia; T. J.V. Bowcock; C. Bozzi; T. Brambach; J. Van Den Brand; J. Bressieux; D. Brett; M. Britsch; T. Britton; N. H. Brook; H. Brown; A. Büchler-Germann; I. Burducea; A. Bursche; J. Buytaert; S. Cadeddu; O. Callot; M. Calvi; M. Calvo Gomez; A. Camboni; P. Campana; A. Carbone; G. Carboni; R. Cardinale; A. Cardini; L. Carson; K. Carvalho Akiba; G. Casse; M. Cattaneo; Ch Cauet; M. Charles; Ph Charpentier; P. Chen; N. Chiapolini; M. Chrzaszcz; K. Ciba; X. Cid Vidal; G. Ciezarek; P. E.L. Clarke; M. Clemencic; H. V. Cliff; J. Closier; C. Coca; V. Coco; J. Cogan; E. Cogneras; P. Collins; A. Comerma-Montells; A. Contu; A. Cook; M. Coombes; G. Corti; B. Couturier; G. A. Cowan; D. Craik; S. Cunliffe; R. Currie; C. D'Ambrosio; P. David; P. N.Y. David; I. De Bonis; K. De Bruyn; S. De Capua; M. De Cian; J. M. De Miranda; L. De Paula; P. De Simone; D. Decamp; M. Deckenhoff; H. Degaudenzi; L. Del Buono; C. Deplano; D. Derkach; O. Deschamps; F. Dettori; J. Dickens; H. Dijkstra; P. Diniz Batista; F. Domingo Bonal; S. Donleavy; F. Dordei; A. Dosil Suárez; D. Dossett; A. Dovbnya; F. Dupertuis; R. Dzhelyadin; A. Dziurda; A. Dzyuba; S. Easo; U. Egede; V. Egorychev; S. Eidelman; D. Van Eijk; F. Eisele; S. Eisenhardt; R. Ekelhof; L. Eklund; I. El Rifai; Ch Elsasser; D. Elsby; D. Esperante Pereira; A. Falabella; C. Färber; G. Fardell; C. Farinelli; S. Farry; V. Fave; V. Fernandez Albor; F. Ferreira Rodrigues; M. Ferro-Luzzi; S. Filippov; C. Fitzpatrick; M. Fontana; F. Fontanelli; R. Forty; O. Francisco; M. Frank; C. Frei; M. Frosini; S. Furcas; A. Gallas Torreira; D. Galli; M. Gandelman; P. Gandini; Y. Gao; J. C. Garnier; J. Garofoli; J. Garra Tico; L. Garrido; D. Gascon; C. Gaspar; R. Gauld; E. Gersabeck; M. Gersabeck; T. Gershon; Ph Ghez; V. Gibson; V. V. Gligorov; C. Göbel; D. Golubkov; A. Golutvin; A. Gomes; H. Gordon; M. Grabalosa Gándara; R. Graciani Diaz; L. A.Granado Cardoso; E. Graugés; G. Graziani; A. Grecu; E. Greening; S. Gregson; O. Grünberg; B. Gui; E. Gushchin; Yu Guz; T. Gys; C. Hadjivasiliou; G. Haefeli; C. Haen; S. C. Haines; S. Hall; T. Hampson; S. Hansmann-Menzemer; N. Harnew; S. T. Harnew; J. Harrison; P. F. Harrison; T. Hartmann; J. He; V. Heijne; K. Hennessy; P. Henrard; J. A.Hernando Morata; E. Van Herwijnen; E. Hicks; D. Hill; M. Hoballah; P. Hopchev; W. Hulsbergen; P. Hunt; T. Huse; N. Hussain; R. S. Huston; D. Hutchcroft; D. Hynds; V. Iakovenko; P. Ilten; J. Imong; R. Jacobsson; A. Jaeger; M. Jahjah Hussein; E. Jans; F. Jansen; P. Jaton; B. Jean-Marie; F. Jing; M. John; D. Johnson; C. R. Jones; B. Jost; M. Kaballo; S. Kandybei; M. Karacson; T. M. Karbach; J. Keaveney; I. R. Kenyon; U. Kerzel; T. Ketel; A. Keune; B. Khanji; Y. M. Kim; M. Knecht; O. Kochebina; I. Komarov; R. F. Koopman; P. Koppenburg; M. Korolev; A. Kozlinskiy; L. Kravchuk; K. Kreplin; M. Kreps; G. Krocker; P. Krokovny; F. Kruse; M. Kucharczyk; V. Kudryavtsev; T. Kvaratskheliya; V. N. La Thi; D. Lacarrere; G. Lafferty; A. Lai; D. Lambert; R. W. Lambert; E. Lanciotti; G. Lanfranchi; C. Langenbruch; T. Latham; C. Lazzeroni; R. Le Gac; J. Van Leerdam; J. P. Lees; R. Lefèvre; A. Leflat; J. Lefrançois; O. Leroy; T. Lesiak; L. Li; Y. Li; L. Li Gioi; M. Lieng; M. Liles; R. Lindner; C. Linn; B. Liu; G. Liu; J. Von Loeben; J. H. Lopes; E. Lopez Asamar; N. Lopez-March; H. Lu; J. Luisier; A. Mac Raighne; F. Machefert; I. V. Machikhiliyan; F. Maciuc; O. Maev; J. Magnin; S. Malde; R. M.D. Mamunur; G. Manca; G. Mancinelli; N. Mangiafave; U. Marconi; R. Märki; J. Marks; G. Martellotti; A. Martens; L. Martin; A. Martín Sánchez; M. Martinelli; D. Martinez Santos; A. Massafferri; Z. Mathe; C. Matteuzzi; M. Matveev; E. Maurice; A. Mazurov; J. McCarthy; G. McGregor; R. McNulty; M. Meissner; M. Merk; J. Merkel; D. A. Milanes; M. N. Minard; J. Molina Rodriguez; S. Monteil; D. Moran; P. Morawski; R. Mountain; I. Mous; F. Muheim; K. Müller; R. Muresan; B. Muryn; B. Muster; J. Mylroie-Smith; P. Naik; T. Nakada; R. Nandakumar; I. Nasteva; M. Needham; N. Neufeld; A. D. Nguyen; C. Nguyen-Mau; M. Nicol; V. Niess; N. Nikitin; T. Nikodem; A. Nomerotski; A. Novoselov; A. Oblakowska-Mucha; V. Obraztsov; S. Oggero; S. Ogilvy; O. Okhrimenko; R. Oldeman; M. Orlandea; J. M.Otalora Goicochea; P. Owen; B. K. Pal; A. Palano; M. Palutan; J. Panman; A. Papanestis; M. Pappagallo; C. Parkes; C. J. Parkinson; G. Passaleva; G. D. Patel; M. Patel; G. N. Patrick; C. Patrignani; C. Pavel-Nicorescu; A. Pazos Alvarez; A. Pellegrino; G. Penso; M. Pepe Altarelli; S. Perazzini; D. L. Perego; E. Perez Trigo; A. Pérez Calero Yzquierdo; P. Perret; M. Perrin-Terrin; G. Pessina; A. Petrolini; A. Phan; E. Picatoste Olloqui; B. Pie Valls; B. Pietrzyk; T. Pilař; D. Pinci; S. Playfer; M. Plo Casasus; F. Polci; G. Polok; A. Poluektov; E. Polycarpo; D. Popov; B. Popovici; C. Potterat; A. Powell; J. Prisciandaro; V. Pugatch; A. Puig Navarro; W. Qian; J. H. Rademacker; B. Rakotomiaramanana; M. S. Rangel; I. Raniuk; N. Rauschmayr; G. Raven; S. Redford; M. M. Reid; A. C. Dos Reis; S. Ricciardi; A. Richards; K. Rinnert; D. A.Roa Romero; P. Robbe; E. Rodrigues; P. Rodriguez Perez; G. J. Rogers; S. Roiser; V. Romanovsky; A. Romero Vidal; M. Rosello; J. Rouvinet; T. Ruf; H. Ruiz; G. Sabatino; J. J.Saborido Silva; N. Sagidova; P. Sail; B. Saitta; C. Salzmann; B. Sanmartin Sedes; M. Sannino; R. Santacesaria; C. Santamarina Rios; R. Santinelli; E. Santovetti; M. Sapunov; A. Sarti; C. Satriano; A. Satta; M. Savrie; D. Savrina; P. Schaack; M. Schiller; H. Schindler; S. Schleich; M. Schlupp; M. Schmelling; B. Schmidt; O. Schneider; A. Schopper; M. H. Schune; R. Schwemmer; B. Sciascia; A. Sciubba; M. Seco; A. Semennikov; K. Senderowska; I. Sepp; N. Serra; J. Serrano; P. Seyfert; M. Shapkin; I. Shapoval; P. Shatalov; Y. Shcheglov; T. Shears; L. Shekhtman; O. Shevchenko; V. Shevchenko; A. Shires; R. Silva Coutinho; T. Skwarnicki; N. A. Smith; E. Smith; M. Smith; K. Sobczak; F. J.P. Soler; A. Solomin; F. Soomro; D. Souza; B. Souza De Paula; B. Spaan; A. Sparkes; P. Spradlin; F. Stagni; S. Stahl; O. Steinkamp; S. Stoica; S. Stone; B. Storaci; M. Straticiuc; U. Straumann; V. K. Subbiah; S. Swientek; M. Szczekowski; P. Szczypka; T. Szumlak; S. T'Jampens; M. Teklishyn; E. Teodorescu; F. Teubert; C. Thomas; E. Thomas; J. Van Tilburg; V. Tisserand; M. Tobin; S. Tolk; S. Topp-Joergensen; N. Torr; E. Tournefier; S. Tourneur; M. T. Tran; A. Tsaregorodtsev; N. Tuning; M. Ubeda Garcia; A. Ukleja; U. Uwer; V. Vagnoni; G. Valenti; R. Vazquez Gomez; P. Vazquez Regueiro; S. Vecchi; J. J. Velthuis; M. Veltri; G. Veneziano; M. Vesterinen; B. Viaud; I. Videau; D. Vieira; X. Vilasis-Cardona; J. Visniakov; A. Vollhardt; D. Volyanskyy; D. Voong; A. Vorobyev; V. Vorobyev; C. Voß; H. Voss; R. Waldi; R. Wallace; S. Wandernoth; J. Wang; D. R. Ward; N. K. Watson; A. D. Webber; D. Websdale; M. Whitehead; J. Wicht; D. Wiedner; L. Wiggers; G. Wilkinson; M. P. Williams; M. Williams; F. F. Wilson; J. Wishahi; M. Witek; W. Witzeling; S. A. Wotton; S. Wright; S. Wu; K. Wyllie; Y. Xie; F. Xing; Z. Xing; Z. Yang; R. Young; X. Yuan; O. Yushchenko; M. Zangoli; M. Zavertyaev; F. Zhang; L. Zhang; W. C. Zhang; Y. Zhang; A. Zhelezov; L. Zhong; A. Zvyagin

doi:10.1007/JHEP12(2012)125

First observation of the decay B⁺ → π⁺ μ⁺ μ^-

R. Aaij
, C. Abellan Beteta
, A. Adametz
, B. Adeva
, M. Adinolfi
, C. Adrover
, A. Affolder
, Z. Ajaltouni
, J. Albrecht
, F. Alessio
, M. Alexander
, S. Ali
, G. Alkhazov
, P. Alvarez Cartelle
, A. A. Alves
, S. Amato
, Y. Amhis
, L. Anderlini
, J. Anderson
, R. B. Appleby

O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J. J. Back, C. Baesso, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, A. Bates, C. Bauer, Th Bauer, A. Bay, J. Beddow, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, R. Bernet, M. O. Bettler, M. Van Beuzekom, A. Bien, S. Bifani, T. Bird, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, C. Blanks, J. Blouw, S. Blusk, A. Bobrov, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, T. J.V. Bowcock, C. Bozzi, T. Brambach, J. Van Den Brand, J. Bressieux, D. Brett, M. Britsch, T. Britton, N. H. Brook, H. Brown, A. Büchler-Germann, I. Burducea, A. Bursche, J. Buytaert, S. Cadeddu, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, L. Carson, K. Carvalho Akiba, G. Casse, M. Cattaneo, Ch Cauet, M. Charles, Ph Charpentier, P. Chen, N. Chiapolini, M. Chrzaszcz, K. Ciba, X. Cid Vidal, G. Ciezarek, P. E.L. Clarke, M. Clemencic, H. V. Cliff, J. Closier, C. Coca, V. Coco, J. Cogan, E. Cogneras, P. Collins, A. Comerma-Montells, A. Contu, A. Cook, M. Coombes, G. Corti, B. Couturier, G. A. Cowan, D. Craik, S. Cunliffe, R. Currie, C. D'Ambrosio, P. David, P. N.Y. David, I. De Bonis, K. De Bruyn, S. De Capua, M. De Cian, J. M. De Miranda, L. De Paula, P. De Simone, D. Decamp, M. Deckenhoff, H. Degaudenzi, L. Del Buono, C. Deplano, D. Derkach, O. Deschamps, F. Dettori, J. Dickens, H. Dijkstra, P. Diniz Batista, F. Domingo Bonal, S. Donleavy, F. Dordei, A. Dosil Suárez, D. Dossett, A. Dovbnya, F. Dupertuis, R. Dzhelyadin, A. Dziurda, A. Dzyuba, S. Easo, U. Egede, V. Egorychev, S. Eidelman, D. Van Eijk, F. Eisele, S. Eisenhardt, R. Ekelhof, L. Eklund, I. El Rifai, Ch Elsasser, D. Elsby, D. Esperante Pereira, A. Falabella, C. Färber, G. Fardell, C. Farinelli, S. Farry, V. Fave, V. Fernandez Albor, F. Ferreira Rodrigues, M. Ferro-Luzzi, S. Filippov, C. Fitzpatrick, M. Fontana, F. Fontanelli, R. Forty, O. Francisco, M. Frank, C. Frei, M. Frosini, S. Furcas, A. Gallas Torreira, D. Galli, M. Gandelman, P. Gandini, Y. Gao, J. C. Garnier, J. Garofoli, J. Garra Tico, L. Garrido, D. Gascon, C. Gaspar, R. Gauld, E. Gersabeck, M. Gersabeck, T. Gershon, Ph Ghez, V. Gibson, V. V. Gligorov, C. Göbel, D. Golubkov, A. Golutvin, A. Gomes, H. Gordon, M. Grabalosa Gándara, R. Graciani Diaz, L. A.Granado Cardoso, E. Graugés, G. Graziani, A. Grecu, E. Greening, S. Gregson, O. Grünberg, B. Gui, E. Gushchin, Yu Guz, T. Gys, C. Hadjivasiliou, G. Haefeli, C. Haen, S. C. Haines, S. Hall, T. Hampson, S. Hansmann-Menzemer, N. Harnew, S. T. Harnew, J. Harrison, P. F. Harrison, T. Hartmann, J. He, V. Heijne, K. Hennessy, P. Henrard, J. A.Hernando Morata, E. Van Herwijnen, E. Hicks, D. Hill, M. Hoballah, P. Hopchev, W. Hulsbergen, P. Hunt, T. Huse, N. Hussain, R. S. Huston, D. Hutchcroft, D. Hynds, V. Iakovenko, P. Ilten, J. Imong, R. Jacobsson, A. Jaeger, M. Jahjah Hussein, E. Jans, F. Jansen, P. Jaton, B. Jean-Marie, F. Jing, M. John, D. Johnson, C. R. Jones, B. Jost, M. Kaballo, S. Kandybei, M. Karacson, T. M. Karbach, J. Keaveney, I. R. Kenyon, U. Kerzel, T. Ketel, A. Keune, B. Khanji, Y. M. Kim, M. Knecht, O. Kochebina, I. Komarov, R. F. Koopman, P. Koppenburg, M. Korolev, A. Kozlinskiy, L. Kravchuk, K. Kreplin, M. Kreps, G. Krocker, P. Krokovny, F. Kruse, M. Kucharczyk, V. Kudryavtsev, T. Kvaratskheliya, V. N. La Thi, D. Lacarrere, G. Lafferty, A. Lai, D. Lambert, R. W. Lambert, E. Lanciotti, G. Lanfranchi, C. Langenbruch, T. Latham, C. Lazzeroni, R. Le Gac, J. Van Leerdam, J. P. Lees, R. Lefèvre, A. Leflat, J. Lefrançois, O. Leroy, T. Lesiak, L. Li, Y. Li, L. Li Gioi, M. Lieng, M. Liles, R. Lindner, C. Linn, B. Liu, G. Liu, J. Von Loeben, J. H. Lopes, E. Lopez Asamar, N. Lopez-March, H. Lu, J. Luisier, A. Mac Raighne, F. Machefert, I. V. Machikhiliyan, F. Maciuc, O. Maev, J. Magnin, S. Malde, R. M.D. Mamunur, G. Manca, G. Mancinelli, N. Mangiafave, U. Marconi, R. Märki, J. Marks, G. Martellotti, A. Martens, L. Martin, A. Martín Sánchez, M. Martinelli, D. Martinez Santos, A. Massafferri, Z. Mathe, C. Matteuzzi, M. Matveev, E. Maurice, A. Mazurov, J. McCarthy, G. McGregor, R. McNulty, M. Meissner, M. Merk, J. Merkel, D. A. Milanes, M. N. Minard, J. Molina Rodriguez, S. Monteil, D. Moran, P. Morawski, R. Mountain, I. Mous, F. Muheim, K. Müller, R. Muresan, B. Muryn, B. Muster, J. Mylroie-Smith, P. Naik, T. Nakada, R. Nandakumar, I. Nasteva, M. Needham, N. Neufeld, A. D. Nguyen, C. Nguyen-Mau, M. Nicol, V. Niess, N. Nikitin, T. Nikodem, A. Nomerotski, A. Novoselov, A. Oblakowska-Mucha, V. Obraztsov, S. Oggero, S. Ogilvy, O. Okhrimenko, R. Oldeman, M. Orlandea, J. M.Otalora Goicochea, P. Owen, B. K. Pal, A. Palano, M. Palutan, J. Panman, A. Papanestis, M. Pappagallo, C. Parkes, C. J. Parkinson, G. Passaleva, G. D. Patel, M. Patel, G. N. Patrick, C. Patrignani, C. Pavel-Nicorescu, A. Pazos Alvarez, A. Pellegrino, G. Penso, M. Pepe Altarelli, S. Perazzini, D. L. Perego, E. Perez Trigo, A. Pérez Calero Yzquierdo, P. Perret, M. Perrin-Terrin, G. Pessina, A. Petrolini, A. Phan, E. Picatoste Olloqui, B. Pie Valls, B. Pietrzyk, T. Pilař, D. Pinci, S. Playfer, M. Plo Casasus, F. Polci, G. Polok, A. Poluektov, E. Polycarpo, D. Popov, B. Popovici, C. Potterat, A. Powell, J. Prisciandaro, V. Pugatch, A. Puig Navarro, W. Qian, J. H. Rademacker, B. Rakotomiaramanana, M. S. Rangel, I. Raniuk, N. Rauschmayr, G. Raven, S. Redford, M. M. Reid, A. C. Dos Reis, S. Ricciardi, A. Richards, K. Rinnert, D. A.Roa Romero, P. Robbe, E. Rodrigues, P. Rodriguez Perez, G. J. Rogers, S. Roiser, V. Romanovsky, A. Romero Vidal, M. Rosello, J. Rouvinet, T. Ruf, H. Ruiz, G. Sabatino, J. J.Saborido Silva, N. Sagidova, P. Sail, B. Saitta, C. Salzmann, B. Sanmartin Sedes, M. Sannino, R. Santacesaria, C. Santamarina Rios, R. Santinelli, E. Santovetti, M. Sapunov, A. Sarti, C. Satriano, A. Satta, M. Savrie, D. Savrina, P. Schaack, M. Schiller, H. Schindler, S. Schleich, M. Schlupp, M. Schmelling, B. Schmidt, O. Schneider, A. Schopper, M. H. Schune, R. Schwemmer, B. Sciascia, A. Sciubba, M. Seco, A. Semennikov, K. Senderowska, I. Sepp, N. Serra, J. Serrano, P. Seyfert, M. Shapkin, I. Shapoval, P. Shatalov, Y. Shcheglov, T. Shears, L. Shekhtman, O. Shevchenko, V. Shevchenko, A. Shires, R. Silva Coutinho, T. Skwarnicki, N. A. Smith, E. Smith, M. Smith, K. Sobczak, F. J.P. Soler, A. Solomin, F. Soomro, D. Souza, B. Souza De Paula, B. Spaan, A. Sparkes, P. Spradlin, F. Stagni, S. Stahl, O. Steinkamp, S. Stoica, S. Stone, B. Storaci, M. Straticiuc, U. Straumann, V. K. Subbiah, S. Swientek, M. Szczekowski, P. Szczypka, T. Szumlak, S. T'Jampens, M. Teklishyn, E. Teodorescu, F. Teubert, C. Thomas, E. Thomas, J. Van Tilburg, V. Tisserand, M. Tobin, S. Tolk, S. Topp-Joergensen, N. Torr, E. Tournefier, S. Tourneur, M. T. Tran, A. Tsaregorodtsev, N. Tuning, M. Ubeda Garcia, A. Ukleja, U. Uwer, V. Vagnoni, G. Valenti, R. Vazquez Gomez, P. Vazquez Regueiro, S. Vecchi, J. J. Velthuis, M. Veltri, G. Veneziano, M. Vesterinen, B. Viaud, I. Videau, D. Vieira, X. Vilasis-Cardona, J. Visniakov, A. Vollhardt, D. Volyanskyy, D. Voong, A. Vorobyev, V. Vorobyev, C. Voß, H. Voss, R. Waldi, R. Wallace, S. Wandernoth, J. Wang, D. R. Ward, N. K. Watson, A. D. Webber, D. Websdale, M. Whitehead, J. Wicht, D. Wiedner, L. Wiggers, G. Wilkinson, M. P. Williams, M. Williams, F. F. Wilson, J. Wishahi, M. Witek, W. Witzeling, S. A. Wotton, S. Wright, S. Wu, K. Wyllie, Y. Xie, F. Xing, Z. Xing, Z. Yang, R. Young, X. Yuan, O. Yushchenko, M. Zangoli, M. Zavertyaev, F. Zhang, L. Zhang, W. C. Zhang, Y. Zhang, A. Zhelezov, L. Zhong, A. Zvyagin

Science Park 105
University of Barcelona
Universitat Ramon LLull - CSIC
University of Heidelberg
University Santiago de Compostela
University of Bristol
Aix-Marseille Université
University of Liverpool
Clermont-Auvergne University
European Organization for Nuclear Research
University of Glasgow
Petersburg Nuclear Physics Institute (PNPI)
Sezione di Roma
Instituto de Biofisica da UFRJ
ENAC-IIC-GEL
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
University of Florence
Physik-Institut der Universität Zürich
University of Manchester
Max-Planck-Institut für Kernphysik
LNF-INFN
Kurchatov Institute
Syracuse University
Università degli Studi della Basilicata
University of Warwick
Pontifícia Universidade Católica do Rio de Janeiro
Institute for Theoretical and Experimental Physics
Sezione INFN di Ferrara
Laboratoire de l'Accélérateur Linéaire
University of Cambridge
Centro Brasileiro de Pesquisas Fisicas
Universités Paris VI and VII
University of Edinburgh
Moscow State University
University College Dublin
University of Modena and Reggio Emilia
Imperial College London
Novosibirsk State University
Sezione INFN di Cagliari
University of Dortmund
Vrije Universiteit Amsterdam
Horia Hulubei National Institute of Physics and Nuclear Engineering
INFN Sezione di Milano-Bicocca
University of Milano-Bicocca
INFN Sezione di Bologna
University of Bologna
University of Rome “Tor Vergata”
Sezione di Genova
University of Genoa
University of Oxford
Tsinghua University
Institute for Nuclear Physics
Laboratoire de Physique des Particules
Kharkov Institute of Physics and Technology
CCLRC Rutherford Appleton Laboratory
University of Birmingham
University of Ferrara
Institute for Nuclear Research of the Russian Academy of Sciences
Universität Rostock
Institute of Nuclear Research, National Academy of Sciences in Ukraine
Universitá di Cagliari
INFN Sezione di Bari
Agh University of Science and Technology Faculty of Computer Science
Hanoi University of Science and Technology
Università degli studi di Bari Aldo Moro
University of Rome
National Centre for Nuclear Research (NCBJ)
University of Urbino Carlo Bo
P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

Abstract

A discovery of the rare decay B⁺ → π⁺ μ⁺ μ^- is presented. This decay is observed for the first time, with 5.2 σ significance. The observation is made using pp collision data, corresponding to an integrated luminosity of 1.0 fb ^-1, collected with the LHCb detector. The measured branching fraction is (2.3 ± 0.6 (stat.) ± 0.1 (syst.))×10^-8, and the ratio of the B⁺ → π⁺ μ⁺ μ^- and B⁺ → K⁺ μ⁺ μ^- branching fractions is measured to be 0.053 ± 0.014 (stat.) ± 0.001 (syst.).

Original language	English
Article number	125
Journal	Journal of High Energy Physics
Volume	2012
Issue number	12
DOIs	https://doi.org/10.1007/JHEP12(2012)125
Publication status	Published - 1 Jan 2012
Externally published	Yes

Keywords

Hadron-Hadron Scattering

Access to Document

10.1007/JHEP12(2012)125

Cite this

Aaij, R., Beteta, C. A., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. A., Alves, A. A., Amato, S., Amhis, Y., Anderlini, L., Anderson, J., ... Zvyagin, A. (2012). First observation of the decay B⁺ → π⁺ μ⁺ μ^-. Journal of High Energy Physics, 2012(12), Article 125. https://doi.org/10.1007/JHEP12(2012)125

@article{c227ab50a7cf4340b2109de12e6abbba,

title = "First observation of the decay B+ → π+ μ+ μ-",

abstract = "A discovery of the rare decay B+ → π+ μ+ μ- is presented. This decay is observed for the first time, with 5.2 σ significance. The observation is made using pp collision data, corresponding to an integrated luminosity of 1.0 fb -1, collected with the LHCb detector. The measured branching fraction is (2.3 ± 0.6 (stat.) ± 0.1 (syst.))×10-8, and the ratio of the B+ → π+ μ+ μ- and B+ → K+ μ+ μ- branching fractions is measured to be 0.053 ± 0.014 (stat.) ± 0.001 (syst.).",

keywords = "Hadron-Hadron Scattering",

author = "R. Aaij and Beteta, \{C. Abellan\} and A. Adametz and B. Adeva and M. Adinolfi and C. Adrover and A. Affolder and Z. Ajaltouni and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and Cartelle, \{P. Alvarez\} and Alves, \{A. A.\} and S. Amato and Y. Amhis and L. Anderlini and J. Anderson and Appleby, \{R. B.\} and Gutierrez, \{O. Aquines\} and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and S. Bachmann and Back, \{J. J.\} and C. Baesso and V. Balagura and W. Baldini and Barlow, \{R. J.\} and C. Barschel and S. Barsuk and W. Barter and A. Bates and C. Bauer and Th Bauer and A. Bay and J. Beddow and I. Bediaga and S. Belogurov and K. Belous and I. Belyaev and E. Ben-Haim and M. Benayoun and G. Bencivenni and S. Benson and J. Benton and A. Berezhnoy and R. Bernet and Bettler, \{M. O.\} and \{Van Beuzekom\}, M. and A. Bien and S. Bifani and T. Bird and A. Bizzeti and Bj{\o}rnstad, \{P. M.\} and T. Blake and F. Blanc and C. Blanks and J. Blouw and S. Blusk and A. Bobrov and V. Bocci and A. Bondar and N. Bondar and W. Bonivento and S. Borghi and A. Borgia and Bowcock, \{T. J.V.\} and C. Bozzi and T. Brambach and \{Van Den Brand\}, J. and J. Bressieux and D. Brett and M. Britsch and T. Britton and Brook, \{N. H.\} and H. Brown and A. B{\"u}chler-Germann and I. Burducea and A. Bursche and J. Buytaert and S. Cadeddu and O. Callot and M. Calvi and Gomez, \{M. Calvo\} and A. Camboni and P. Campana and A. Carbone and G. Carboni and R. Cardinale and A. Cardini and L. Carson and Akiba, \{K. Carvalho\} and G. Casse and M. Cattaneo and Ch Cauet and M. Charles and Ph Charpentier and P. Chen and N. Chiapolini and M. Chrzaszcz and K. Ciba and Vidal, \{X. Cid\} and G. Ciezarek and Clarke, \{P. E.L.\} and M. Clemencic and Cliff, \{H. V.\} and J. Closier and C. Coca and V. Coco and J. Cogan and E. Cogneras and P. Collins and A. Comerma-Montells and A. Contu and A. Cook and M. Coombes and G. Corti and B. Couturier and Cowan, \{G. A.\} and D. Craik and S. Cunliffe and R. Currie and C. D'Ambrosio and P. David and David, \{P. N.Y.\} and \{De Bonis\}, I. and \{De Bruyn\}, K. and \{De Capua\}, S. and \{De Cian\}, M. and \{De Miranda\}, \{J. M.\} and \{De Paula\}, L. and \{De Simone\}, P. and D. Decamp and M. Deckenhoff and H. Degaudenzi and \{Del Buono\}, L. and C. Deplano and D. Derkach and O. Deschamps and F. Dettori and J. Dickens and H. Dijkstra and Batista, \{P. Diniz\} and Bonal, \{F. Domingo\} and S. Donleavy and F. Dordei and Su{\'a}rez, \{A. Dosil\} and D. Dossett and A. Dovbnya and F. Dupertuis and R. Dzhelyadin and A. Dziurda and A. Dzyuba and S. Easo and U. Egede and V. Egorychev and S. Eidelman and \{Van Eijk\}, D. and F. Eisele and S. Eisenhardt and R. Ekelhof and L. Eklund and \{El Rifai\}, I. and Ch Elsasser and D. Elsby and Pereira, \{D. Esperante\} and A. Falabella and C. F{\"a}rber and G. Fardell and C. Farinelli and S. Farry and V. Fave and Albor, \{V. Fernandez\} and Rodrigues, \{F. Ferreira\} and M. Ferro-Luzzi and S. Filippov and C. Fitzpatrick and M. Fontana and F. Fontanelli and R. Forty and O. Francisco and M. Frank and C. Frei and M. Frosini and S. Furcas and Torreira, \{A. Gallas\} and D. Galli and M. Gandelman and P. Gandini and Y. Gao and Garnier, \{J. C.\} and J. Garofoli and Tico, \{J. Garra\} and L. Garrido and D. Gascon and C. Gaspar and R. Gauld and E. Gersabeck and M. Gersabeck and T. Gershon and Ph Ghez and V. Gibson and Gligorov, \{V. V.\} and C. G{\"o}bel and D. Golubkov and A. Golutvin and A. Gomes and H. Gordon and G{\'a}ndara, \{M. Grabalosa\} and Diaz, \{R. Graciani\} and Cardoso, \{L. A.Granado\} and E. Graug{\'e}s and G. Graziani and A. Grecu and E. Greening and S. Gregson and O. Gr{\"u}nberg and B. Gui and E. Gushchin and Yu Guz and T. Gys and C. Hadjivasiliou and G. Haefeli and C. Haen and Haines, \{S. C.\} and S. Hall and T. Hampson and S. Hansmann-Menzemer and N. Harnew and Harnew, \{S. T.\} and J. Harrison and Harrison, \{P. F.\} and T. Hartmann and J. He and V. Heijne and K. Hennessy and P. Henrard and Morata, \{J. A.Hernando\} and \{Van Herwijnen\}, E. and E. Hicks and D. Hill and M. Hoballah and P. Hopchev and W. Hulsbergen and P. Hunt and T. Huse and N. Hussain and Huston, \{R. S.\} and D. Hutchcroft and D. Hynds and V. Iakovenko and P. Ilten and J. Imong and R. Jacobsson and A. Jaeger and Hussein, \{M. Jahjah\} and E. Jans and F. Jansen and P. Jaton and B. Jean-Marie and F. Jing and M. John and D. Johnson and Jones, \{C. R.\} and B. Jost and M. Kaballo and S. Kandybei and M. Karacson and Karbach, \{T. M.\} and J. Keaveney and Kenyon, \{I. R.\} and U. Kerzel and T. Ketel and A. Keune and B. Khanji and Kim, \{Y. M.\} and M. Knecht and O. Kochebina and I. Komarov and Koopman, \{R. F.\} and P. Koppenburg and M. Korolev and A. Kozlinskiy and L. Kravchuk and K. Kreplin and M. Kreps and G. Krocker and P. Krokovny and F. Kruse and M. Kucharczyk and V. Kudryavtsev and T. Kvaratskheliya and \{La Thi\}, \{V. N.\} and D. Lacarrere and G. Lafferty and A. Lai and D. Lambert and Lambert, \{R. W.\} and E. Lanciotti and G. Lanfranchi and C. Langenbruch and T. Latham and C. Lazzeroni and \{Le Gac\}, R. and \{Van Leerdam\}, J. and Lees, \{J. P.\} and R. Lef{\`e}vre and A. Leflat and J. Lefran{\c c}ois and O. Leroy and T. Lesiak and L. Li and Y. Li and Gioi, \{L. Li\} and M. Lieng and M. Liles and R. Lindner and C. Linn and B. Liu and G. Liu and \{Von Loeben\}, J. and Lopes, \{J. H.\} and Asamar, \{E. Lopez\} and N. Lopez-March and H. Lu and J. Luisier and Raighne, \{A. Mac\} and F. Machefert and Machikhiliyan, \{I. V.\} and F. Maciuc and O. Maev and J. Magnin and S. Malde and Mamunur, \{R. M.D.\} and G. Manca and G. Mancinelli and N. Mangiafave and U. Marconi and R. M{\"a}rki and J. Marks and G. Martellotti and A. Martens and L. Martin and S{\'a}nchez, \{A. Mart{\'i}n\} and M. Martinelli and Santos, \{D. Martinez\} and A. Massafferri and Z. Mathe and C. Matteuzzi and M. Matveev and E. Maurice and A. Mazurov and J. McCarthy and G. McGregor and R. McNulty and M. Meissner and M. Merk and J. Merkel and Milanes, \{D. A.\} and Minard, \{M. N.\} and Rodriguez, \{J. Molina\} and S. Monteil and D. Moran and P. Morawski and R. Mountain and I. Mous and F. Muheim and K. M{\"u}ller and R. Muresan and B. Muryn and B. Muster and J. Mylroie-Smith and P. Naik and T. Nakada and R. Nandakumar and I. Nasteva and M. Needham and N. Neufeld and Nguyen, \{A. D.\} and C. Nguyen-Mau and M. Nicol and V. Niess and N. Nikitin and T. Nikodem and A. Nomerotski and A. Novoselov and A. Oblakowska-Mucha and V. Obraztsov and S. Oggero and S. Ogilvy and O. Okhrimenko and R. Oldeman and M. Orlandea and Goicochea, \{J. M.Otalora\} and P. Owen and Pal, \{B. K.\} and A. Palano and M. Palutan and J. Panman and A. Papanestis and M. Pappagallo and C. Parkes and Parkinson, \{C. J.\} and G. Passaleva and Patel, \{G. D.\} and M. Patel and Patrick, \{G. N.\} and C. Patrignani and C. Pavel-Nicorescu and Alvarez, \{A. Pazos\} and A. Pellegrino and G. Penso and Altarelli, \{M. Pepe\} and S. Perazzini and Perego, \{D. L.\} and Trigo, \{E. Perez\} and Yzquierdo, \{A. P{\'e}rez Calero\} and P. Perret and M. Perrin-Terrin and G. Pessina and A. Petrolini and A. Phan and Olloqui, \{E. Picatoste\} and Valls, \{B. Pie\} and B. Pietrzyk and T. Pila{\v r} and D. Pinci and S. Playfer and Casasus, \{M. Plo\} and F. Polci and G. Polok and A. Poluektov and E. Polycarpo and D. Popov and B. Popovici and C. Potterat and A. Powell and J. Prisciandaro and V. Pugatch and Navarro, \{A. Puig\} and W. Qian and Rademacker, \{J. H.\} and B. Rakotomiaramanana and Rangel, \{M. S.\} and I. Raniuk and N. Rauschmayr and G. Raven and S. Redford and Reid, \{M. M.\} and \{Dos Reis\}, \{A. C.\} and S. Ricciardi and A. Richards and K. Rinnert and Romero, \{D. A.Roa\} and P. Robbe and E. Rodrigues and Perez, \{P. Rodriguez\} and Rogers, \{G. J.\} and S. Roiser and V. Romanovsky and Vidal, \{A. Romero\} and M. Rosello and J. Rouvinet and T. Ruf and H. Ruiz and G. Sabatino and Silva, \{J. J.Saborido\} and N. Sagidova and P. Sail and B. Saitta and C. Salzmann and Sedes, \{B. Sanmartin\} and M. Sannino and R. Santacesaria and Rios, \{C. Santamarina\} and R. Santinelli and E. Santovetti and M. Sapunov and A. Sarti and C. Satriano and A. Satta and M. Savrie and D. Savrina and P. Schaack and M. Schiller and H. Schindler and S. Schleich and M. Schlupp and M. Schmelling and B. Schmidt and O. Schneider and A. Schopper and Schune, \{M. H.\} and R. Schwemmer and B. Sciascia and A. Sciubba and M. Seco and A. Semennikov and K. Senderowska and I. Sepp and N. Serra and J. Serrano and P. Seyfert and M. Shapkin and I. Shapoval and P. Shatalov and Y. Shcheglov and T. Shears and L. Shekhtman and O. Shevchenko and V. Shevchenko and A. Shires and Coutinho, \{R. Silva\} and T. Skwarnicki and Smith, \{N. A.\} and E. Smith and M. Smith and K. Sobczak and Soler, \{F. J.P.\} and A. Solomin and F. Soomro and D. Souza and \{De Paula\}, \{B. Souza\} and B. Spaan and A. Sparkes and P. Spradlin and F. Stagni and S. Stahl and O. Steinkamp and S. Stoica and S. Stone and B. Storaci and M. Straticiuc and U. Straumann and Subbiah, \{V. K.\} and S. Swientek and M. Szczekowski and P. Szczypka and T. Szumlak and S. T'Jampens and M. Teklishyn and E. Teodorescu and F. Teubert and C. Thomas and E. Thomas and \{Van Tilburg\}, J. and V. Tisserand and M. Tobin and S. Tolk and S. Topp-Joergensen and N. Torr and E. Tournefier and S. Tourneur and Tran, \{M. T.\} and A. Tsaregorodtsev and N. Tuning and Garcia, \{M. Ubeda\} and A. Ukleja and U. Uwer and V. Vagnoni and G. Valenti and Gomez, \{R. Vazquez\} and Regueiro, \{P. Vazquez\} and S. Vecchi and Velthuis, \{J. J.\} and M. Veltri and G. Veneziano and M. Vesterinen and B. Viaud and I. Videau and D. Vieira and X. Vilasis-Cardona and J. Visniakov and A. Vollhardt and D. Volyanskyy and D. Voong and A. Vorobyev and V. Vorobyev and C. Vo{\ss} and H. Voss and R. Waldi and R. Wallace and S. Wandernoth and J. Wang and Ward, \{D. R.\} and Watson, \{N. K.\} and Webber, \{A. D.\} and D. Websdale and M. Whitehead and J. Wicht and D. Wiedner and L. Wiggers and G. Wilkinson and Williams, \{M. P.\} and M. Williams and Wilson, \{F. F.\} and J. Wishahi and M. Witek and W. Witzeling and Wotton, \{S. A.\} and S. Wright and S. Wu and K. Wyllie and Y. Xie and F. Xing and Z. Xing and Z. Yang and R. Young and X. Yuan and O. Yushchenko and M. Zangoli and M. Zavertyaev and F. Zhang and L. Zhang and Zhang, \{W. C.\} and Y. Zhang and A. Zhelezov and L. Zhong and A. Zvyagin",

year = "2012",

month = jan,

day = "1",

doi = "10.1007/JHEP12(2012)125",

language = "English",

volume = "2012",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "12",

}

Aaij, R, Beteta, CA, Adametz, A, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Cartelle, PA, Alves, AA, Amato, S, Amhis, Y, Anderlini, L, Anderson, J, Appleby, RB, Gutierrez, OA, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Bachmann, S, Back, JJ, Baesso, C, Balagura, V, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Bates, A, Bauer, C, Bauer, T, Bay, A, Beddow, J, Bediaga, I, Belogurov, S, Belous, K, Belyaev, I, Ben-Haim, E, Benayoun, M, Bencivenni, G, Benson, S, Benton, J, Berezhnoy, A, Bernet, R, Bettler, MO, Van Beuzekom, M, Bien, A, Bifani, S, Bird, T, Bizzeti, A, Bjørnstad, PM, Blake, T, Blanc, F, Blanks, C, Blouw, J, Blusk, S, Bobrov, A, Bocci, V, Bondar, A, Bondar, N, Bonivento, W, Borghi, S, Borgia, A, Bowcock, TJV, Bozzi, C, Brambach, T, Van Den Brand, J, Bressieux, J, Brett, D, Britsch, M, Britton, T, Brook, NH, Brown, H, Büchler-Germann, A, Burducea, I, Bursche, A, Buytaert, J, Cadeddu, S, Callot, O, Calvi, M, Gomez, MC, Camboni, A, Campana, P, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carson, L, Akiba, KC, Casse, G, Cattaneo, M, Cauet, C, Charles, M, Charpentier, P, Chen, P, Chiapolini, N, Chrzaszcz, M, Ciba, K, Vidal, XC, Ciezarek, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Coca, C, Coco, V, Cogan, J, Cogneras, E, Collins, P, Comerma-Montells, A, Contu, A, Cook, A, Coombes, M, Corti, G, Couturier, B, Cowan, GA, Craik, D, Cunliffe, S, Currie, R, D'Ambrosio, C, David, P, David, PNY, De Bonis, I, De Bruyn, K, De Capua, S, De Cian, M, De Miranda, JM, De Paula, L, De Simone, P, Decamp, D, Deckenhoff, M, Degaudenzi, H, Del Buono, L, Deplano, C, Derkach, D, Deschamps, O, Dettori, F, Dickens, J, Dijkstra, H, Batista, PD, Bonal, FD, Donleavy, S, Dordei, F, Suárez, AD, Dossett, D, Dovbnya, A, Dupertuis, F, Dzhelyadin, R, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, Van Eijk, D, Eisele, F, Eisenhardt, S, Ekelhof, R, Eklund, L, El Rifai, I, Elsasser, C, Elsby, D, Pereira, DE, Falabella, A, Färber, C, Fardell, G, Farinelli, C, Farry, S, Fave, V, Albor, VF, Rodrigues, FF, Ferro-Luzzi, M, Filippov, S, Fitzpatrick, C, Fontana, M, Fontanelli, F, Forty, R, Francisco, O, Frank, M, Frei, C, Frosini, M, Furcas, S, Torreira, AG, Galli, D, Gandelman, M, Gandini, P, Gao, Y, Garnier, JC, Garofoli, J, Tico, JG, Garrido, L, Gascon, D, Gaspar, C, Gauld, R, Gersabeck, E, Gersabeck, M, Gershon, T, Ghez, P, Gibson, V, Gligorov, VV, Göbel, C, Golubkov, D, Golutvin, A, Gomes, A, Gordon, H, Gándara, MG, Diaz, RG, Cardoso, LAG, Graugés, E, Graziani, G, Grecu, A, Greening, E, Gregson, S, Grünberg, O, Gui, B, Gushchin, E, Guz, Y, Gys, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haines, SC, Hall, S, Hampson, T, Hansmann-Menzemer, S, Harnew, N, Harnew, ST, Harrison, J, Harrison, PF, Hartmann, T, He, J, Heijne, V, Hennessy, K, Henrard, P, Morata, JAH, Van Herwijnen, E, Hicks, E, Hill, D, Hoballah, M, Hopchev, P, Hulsbergen, W, Hunt, P, Huse, T, Hussain, N, Huston, RS, Hutchcroft, D, Hynds, D, Iakovenko, V, Ilten, P, Imong, J, Jacobsson, R, Jaeger, A, Hussein, MJ, Jans, E, Jansen, F, Jaton, P, Jean-Marie, B, Jing, F, John, M, Johnson, D, Jones, CR, Jost, B, Kaballo, M, Kandybei, S, Karacson, M, Karbach, TM, Keaveney, J, Kenyon, IR, Kerzel, U, Ketel, T, Keune, A, Khanji, B, Kim, YM, Knecht, M, Kochebina, O, Komarov, I, Koopman, RF, Koppenburg, P, Korolev, M, Kozlinskiy, A, Kravchuk, L, Kreplin, K, Kreps, M, Krocker, G, Krokovny, P, Kruse, F, Kucharczyk, M, Kudryavtsev, V, Kvaratskheliya, T, La Thi, VN, Lacarrere, D, Lafferty, G, Lai, A, Lambert, D, Lambert, RW, Lanciotti, E, Lanfranchi, G, Langenbruch, C, Latham, T, Lazzeroni, C, Le Gac, R, Van Leerdam, J, Lees, JP, Lefèvre, R, Leflat, A, Lefrançois, J, Leroy, O, Lesiak, T, Li, L, Li, Y, Gioi, LL, Lieng, M, Liles, M, Lindner, R, Linn, C, Liu, B, Liu, G, Von Loeben, J, Lopes, JH, Asamar, EL, Lopez-March, N, Lu, H, Luisier, J, Raighne, AM, Machefert, F, Machikhiliyan, IV, Maciuc, F, Maev, O, Magnin, J, Malde, S, Mamunur, RMD, Manca, G, Mancinelli, G, Mangiafave, N, Marconi, U, Märki, R, Marks, J, Martellotti, G, Martens, A, Martin, L, Sánchez, AM, Martinelli, M, Santos, DM, Massafferri, A, Mathe, Z, Matteuzzi, C, Matveev, M, Maurice, E, Mazurov, A, McCarthy, J, McGregor, G, McNulty, R, Meissner, M, Merk, M, Merkel, J, Milanes, DA, Minard, MN, Rodriguez, JM, Monteil, S, Moran, D, Morawski, P, Mountain, R, Mous, I, Muheim, F, Müller, K, Muresan, R, Muryn, B, Muster, B, Mylroie-Smith, J, Naik, P, Nakada, T, Nandakumar, R, Nasteva, I, Needham, M, Neufeld, N, Nguyen, AD, Nguyen-Mau, C, Nicol, M, Niess, V, Nikitin, N, Nikodem, T, Nomerotski, A, Novoselov, A, Oblakowska-Mucha, A, Obraztsov, V, Oggero, S, Ogilvy, S, Okhrimenko, O, Oldeman, R, Orlandea, M, Goicochea, JMO, Owen, P, Pal, BK, Palano, A, Palutan, M, Panman, J, Papanestis, A, Pappagallo, M, Parkes, C, Parkinson, CJ, Passaleva, G, Patel, GD, Patel, M, Patrick, GN, Patrignani, C, Pavel-Nicorescu, C, Alvarez, AP, Pellegrino, A, Penso, G, Altarelli, MP, Perazzini, S, Perego, DL, Trigo, EP, Yzquierdo, APC, Perret, P, Perrin-Terrin, M, Pessina, G, Petrolini, A, Phan, A, Olloqui, EP, Valls, BP, Pietrzyk, B, Pilař, T, Pinci, D, Playfer, S, Casasus, MP, Polci, F, Polok, G, Poluektov, A, Polycarpo, E, Popov, D, Popovici, B, Potterat, C, Powell, A, Prisciandaro, J, Pugatch, V, Navarro, AP, Qian, W, Rademacker, JH, Rakotomiaramanana, B, Rangel, MS, Raniuk, I, Rauschmayr, N, Raven, G, Redford, S, Reid, MM, Dos Reis, AC, Ricciardi, S, Richards, A, Rinnert, K, Romero, DAR, Robbe, P, Rodrigues, E, Perez, PR, Rogers, GJ, Roiser, S, Romanovsky, V, Vidal, AR, Rosello, M, Rouvinet, J, Ruf, T, Ruiz, H, Sabatino, G, Silva, JJS, Sagidova, N, Sail, P, Saitta, B, Salzmann, C, Sedes, BS, Sannino, M, Santacesaria, R, Rios, CS, Santinelli, R, Santovetti, E, Sapunov, M, Sarti, A, Satriano, C, Satta, A, Savrie, M, Savrina, D, Schaack, P, Schiller, M, Schindler, H, Schleich, S, Schlupp, M, Schmelling, M, Schmidt, B, Schneider, O, Schopper, A, Schune, MH, Schwemmer, R, Sciascia, B, Sciubba, A, Seco, M, Semennikov, A, Senderowska, K, Sepp, I, Serra, N, Serrano, J, Seyfert, P, Shapkin, M, Shapoval, I, Shatalov, P, Shcheglov, Y, Shears, T, Shekhtman, L, Shevchenko, O, Shevchenko, V, Shires, A, Coutinho, RS, Skwarnicki, T, Smith, NA, Smith, E, Smith, M, Sobczak, K, Soler, FJP, Solomin, A, Soomro, F, Souza, D, De Paula, BS, Spaan, B, Sparkes, A, Spradlin, P, Stagni, F, Stahl, S, Steinkamp, O, Stoica, S, Stone, S, Storaci, B, Straticiuc, M, Straumann, U, Subbiah, VK, Swientek, S, Szczekowski, M, Szczypka, P, Szumlak, T, T'Jampens, S, Teklishyn, M, Teodorescu, E, Teubert, F, Thomas, C, Thomas, E, Van Tilburg, J, Tisserand, V, Tobin, M, Tolk, S, Topp-Joergensen, S, Torr, N, Tournefier, E, Tourneur, S, Tran, MT, Tsaregorodtsev, A, Tuning, N, Garcia, MU, Ukleja, A, Uwer, U, Vagnoni, V, Valenti, G, Gomez, RV, Regueiro, PV, Vecchi, S, Velthuis, JJ, Veltri, M, Veneziano, G, Vesterinen, M, Viaud, B, Videau, I, Vieira, D, Vilasis-Cardona, X, Visniakov, J, Vollhardt, A, Volyanskyy, D, Voong, D, Vorobyev, A, Vorobyev, V, Voß, C, Voss, H, Waldi, R, Wallace, R, Wandernoth, S, Wang, J, Ward, DR, Watson, NK, Webber, AD, Websdale, D, Whitehead, M, Wicht, J, Wiedner, D, Wiggers, L, Wilkinson, G, Williams, MP, Williams, M, Wilson, FF, Wishahi, J, Witek, M, Witzeling, W, Wotton, SA, Wright, S, Wu, S, Wyllie, K, Xie, Y, Xing, F, Xing, Z, Yang, Z, Young, R, Yuan, X, Yushchenko, O, Zangoli, M, Zavertyaev, M, Zhang, F, Zhang, L, Zhang, WC, Zhang, Y, Zhelezov, A, Zhong, L & Zvyagin, A 2012, 'First observation of the decay B⁺ → π⁺ μ⁺ μ^-', Journal of High Energy Physics, vol. 2012, no. 12, 125. https://doi.org/10.1007/JHEP12(2012)125

TY - JOUR

T1 - First observation of the decay B+ → π+ μ+ μ-

AU - Aaij, R.

AU - Beteta, C. Abellan

AU - Adametz, A.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adrover, C.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Ali, S.

AU - Alkhazov, G.

AU - Cartelle, P. Alvarez

AU - Alves, A. A.

AU - Amato, S.

AU - Amhis, Y.

AU - Anderlini, L.

AU - Anderson, J.

AU - Appleby, R. B.

AU - Gutierrez, O. Aquines

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Bachmann, S.

AU - Back, J. J.

AU - Baesso, C.

AU - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bates, A.

AU - Bauer, C.

AU - Bauer, Th

AU - Bay, A.

AU - Beddow, J.

AU - Bediaga, I.

AU - Belogurov, S.

AU - Belous, K.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Benayoun, M.

AU - Bencivenni, G.

AU - Benson, S.

AU - Benton, J.

AU - Berezhnoy, A.

AU - Bernet, R.

AU - Bettler, M. O.

AU - Van Beuzekom, M.

AU - Bien, A.

AU - Bifani, S.

AU - Bird, T.

AU - Bizzeti, A.

AU - Bjørnstad, P. M.

AU - Blake, T.

AU - Blanc, F.

AU - Blanks, C.

AU - Blouw, J.

AU - Blusk, S.

AU - Bobrov, A.

AU - Bocci, V.

AU - Bondar, A.

AU - Bondar, N.

AU - Bonivento, W.

AU - Borghi, S.

AU - Borgia, A.

AU - Bowcock, T. J.V.

AU - Bozzi, C.

AU - Brambach, T.

AU - Van Den Brand, J.

AU - Bressieux, J.

AU - Brett, D.

AU - Britsch, M.

AU - Britton, T.

AU - Brook, N. H.

AU - Brown, H.

AU - Büchler-Germann, A.

AU - Burducea, I.

AU - Bursche, A.

AU - Buytaert, J.

AU - Cadeddu, S.

AU - Callot, O.

AU - Calvi, M.

AU - Gomez, M. Calvo

AU - Camboni, A.

AU - Campana, P.

AU - Carbone, A.

AU - Carboni, G.

AU - Cardinale, R.

AU - Cardini, A.

AU - Carson, L.

AU - Akiba, K. Carvalho

AU - Casse, G.

AU - Cattaneo, M.

AU - Cauet, Ch

AU - Charles, M.

AU - Charpentier, Ph

AU - Chen, P.

AU - Chiapolini, N.

AU - Chrzaszcz, M.

AU - Ciba, K.

AU - Vidal, X. Cid

AU - Ciezarek, G.

AU - Clarke, P. E.L.

AU - Clemencic, M.

AU - Cliff, H. V.

AU - Closier, J.

AU - Coca, C.

AU - Coco, V.

AU - Cogan, J.

AU - Cogneras, E.

AU - Collins, P.

AU - Comerma-Montells, A.

AU - Contu, A.

AU - Cook, A.

AU - Coombes, M.

AU - Corti, G.

AU - Couturier, B.

AU - Cowan, G. A.

AU - Craik, D.

AU - Cunliffe, S.

AU - Currie, R.

AU - D'Ambrosio, C.

AU - David, P.

AU - David, P. N.Y.

AU - De Bonis, I.

AU - De Bruyn, K.

AU - De Capua, S.

AU - De Cian, M.

AU - De Miranda, J. M.

AU - De Paula, L.

AU - De Simone, P.

AU - Decamp, D.

AU - Deckenhoff, M.

AU - Degaudenzi, H.

AU - Del Buono, L.

AU - Deplano, C.

AU - Derkach, D.

AU - Deschamps, O.

AU - Dettori, F.

AU - Dickens, J.

AU - Dijkstra, H.

AU - Batista, P. Diniz

AU - Bonal, F. Domingo

AU - Donleavy, S.

AU - Dordei, F.

AU - Suárez, A. Dosil

AU - Dossett, D.

AU - Dovbnya, A.

AU - Dupertuis, F.

AU - Dzhelyadin, R.

AU - Dziurda, A.

AU - Dzyuba, A.

AU - Easo, S.

AU - Egede, U.

AU - Egorychev, V.

AU - Eidelman, S.

AU - Van Eijk, D.

AU - Eisele, F.

AU - Eisenhardt, S.

AU - Ekelhof, R.

AU - Eklund, L.

AU - El Rifai, I.

AU - Elsasser, Ch

AU - Elsby, D.

AU - Pereira, D. Esperante

AU - Falabella, A.

AU - Färber, C.

AU - Fardell, G.

AU - Farinelli, C.

AU - Farry, S.

AU - Fave, V.

AU - Albor, V. Fernandez

AU - Rodrigues, F. Ferreira

AU - Ferro-Luzzi, M.

AU - Filippov, S.

AU - Fitzpatrick, C.

AU - Fontana, M.

AU - Fontanelli, F.

AU - Forty, R.

AU - Francisco, O.

AU - Frank, M.

AU - Frei, C.

AU - Frosini, M.

AU - Furcas, S.

AU - Torreira, A. Gallas

AU - Galli, D.

AU - Gandelman, M.

AU - Gandini, P.

AU - Gao, Y.

AU - Garnier, J. C.

AU - Garofoli, J.

AU - Tico, J. Garra

AU - Garrido, L.

AU - Gascon, D.

AU - Gaspar, C.

AU - Gauld, R.

AU - Gersabeck, E.

AU - Gersabeck, M.

AU - Gershon, T.

AU - Ghez, Ph

AU - Gibson, V.

AU - Gligorov, V. V.

AU - Göbel, C.

AU - Golubkov, D.

AU - Golutvin, A.

AU - Gomes, A.

AU - Gordon, H.

AU - Gándara, M. Grabalosa

AU - Diaz, R. Graciani

AU - Cardoso, L. A.Granado

AU - Graugés, E.

AU - Graziani, G.

AU - Grecu, A.

AU - Greening, E.

AU - Gregson, S.

AU - Grünberg, O.

AU - Gui, B.

AU - Gushchin, E.

AU - Guz, Yu

AU - Gys, T.

AU - Hadjivasiliou, C.

AU - Haefeli, G.

AU - Haen, C.

AU - Haines, S. C.

AU - Hall, S.

AU - Hampson, T.

AU - Hansmann-Menzemer, S.

AU - Harnew, N.

AU - Harnew, S. T.

AU - Harrison, J.

AU - Harrison, P. F.

AU - Hartmann, T.

AU - He, J.

AU - Heijne, V.

AU - Hennessy, K.

AU - Henrard, P.

AU - Morata, J. A.Hernando

AU - Van Herwijnen, E.

AU - Hicks, E.

AU - Hill, D.

AU - Hoballah, M.

AU - Hopchev, P.

AU - Hulsbergen, W.

AU - Hunt, P.

AU - Huse, T.

AU - Hussain, N.

AU - Huston, R. S.

AU - Hutchcroft, D.

AU - Hynds, D.

AU - Iakovenko, V.

AU - Ilten, P.

AU - Imong, J.

AU - Jacobsson, R.

AU - Jaeger, A.

AU - Hussein, M. Jahjah

AU - Jans, E.

AU - Jansen, F.

AU - Jaton, P.

AU - Jean-Marie, B.

AU - Jing, F.

AU - John, M.

AU - Johnson, D.

AU - Jones, C. R.

AU - Jost, B.

AU - Kaballo, M.

AU - Kandybei, S.

AU - Karacson, M.

AU - Karbach, T. M.

AU - Keaveney, J.

AU - Kenyon, I. R.

AU - Kerzel, U.

AU - Ketel, T.

AU - Keune, A.

AU - Khanji, B.

AU - Kim, Y. M.

AU - Knecht, M.

AU - Kochebina, O.

AU - Komarov, I.

AU - Koopman, R. F.

AU - Koppenburg, P.

AU - Korolev, M.

AU - Kozlinskiy, A.

AU - Kravchuk, L.

AU - Kreplin, K.

AU - Kreps, M.

AU - Krocker, G.

AU - Krokovny, P.

AU - Kruse, F.

AU - Kucharczyk, M.

AU - Kudryavtsev, V.

AU - Kvaratskheliya, T.

AU - La Thi, V. N.

AU - Lacarrere, D.

AU - Lafferty, G.

AU - Lai, A.

AU - Lambert, D.

AU - Lambert, R. W.

AU - Lanciotti, E.

AU - Lanfranchi, G.

AU - Langenbruch, C.

AU - Latham, T.

AU - Lazzeroni, C.

AU - Le Gac, R.

AU - Van Leerdam, J.

AU - Lees, J. P.

AU - Lefèvre, R.

AU - Leflat, A.

AU - Lefrançois, J.

AU - Leroy, O.

AU - Lesiak, T.

AU - Li, L.

AU - Li, Y.

AU - Gioi, L. Li

AU - Lieng, M.

AU - Liles, M.

AU - Lindner, R.

AU - Linn, C.

AU - Liu, B.

AU - Liu, G.

AU - Von Loeben, J.

AU - Lopes, J. H.

AU - Asamar, E. Lopez

AU - Lopez-March, N.

AU - Lu, H.

AU - Luisier, J.

AU - Raighne, A. Mac

AU - Machefert, F.

AU - Machikhiliyan, I. V.

AU - Maciuc, F.

AU - Maev, O.

AU - Magnin, J.

AU - Malde, S.

AU - Mamunur, R. M.D.

AU - Manca, G.

AU - Mancinelli, G.

AU - Mangiafave, N.

AU - Marconi, U.

AU - Märki, R.

AU - Marks, J.

AU - Martellotti, G.

AU - Martens, A.

AU - Martin, L.

AU - Sánchez, A. Martín

AU - Martinelli, M.

AU - Santos, D. Martinez

AU - Massafferri, A.

AU - Mathe, Z.

AU - Matteuzzi, C.

AU - Matveev, M.

AU - Maurice, E.

AU - Mazurov, A.

AU - McCarthy, J.

AU - McGregor, G.

AU - McNulty, R.

AU - Meissner, M.

AU - Merk, M.

AU - Merkel, J.

AU - Milanes, D. A.

AU - Minard, M. N.

AU - Rodriguez, J. Molina

AU - Monteil, S.

AU - Moran, D.

AU - Morawski, P.

AU - Mountain, R.

AU - Mous, I.

AU - Muheim, F.

AU - Müller, K.

AU - Muresan, R.

AU - Muryn, B.

AU - Muster, B.

AU - Mylroie-Smith, J.

AU - Naik, P.

AU - Nakada, T.

AU - Nandakumar, R.

AU - Nasteva, I.

AU - Needham, M.

AU - Neufeld, N.

AU - Nguyen, A. D.

AU - Nguyen-Mau, C.

AU - Nicol, M.

AU - Niess, V.

AU - Nikitin, N.

AU - Nikodem, T.

AU - Nomerotski, A.

AU - Novoselov, A.

AU - Oblakowska-Mucha, A.

AU - Obraztsov, V.

AU - Oggero, S.

AU - Ogilvy, S.

AU - Okhrimenko, O.

AU - Oldeman, R.

AU - Orlandea, M.

AU - Goicochea, J. M.Otalora

AU - Owen, P.

AU - Pal, B. K.

AU - Palano, A.

AU - Palutan, M.

AU - Panman, J.

AU - Papanestis, A.

AU - Pappagallo, M.

AU - Parkes, C.

AU - Parkinson, C. J.

AU - Passaleva, G.

AU - Patel, G. D.

AU - Patel, M.

AU - Patrick, G. N.

AU - Patrignani, C.

AU - Pavel-Nicorescu, C.

AU - Alvarez, A. Pazos

AU - Pellegrino, A.

AU - Penso, G.

AU - Altarelli, M. Pepe

AU - Perazzini, S.

AU - Perego, D. L.

AU - Trigo, E. Perez

AU - Yzquierdo, A. Pérez Calero

AU - Perret, P.

AU - Perrin-Terrin, M.

AU - Pessina, G.

AU - Petrolini, A.

AU - Phan, A.

AU - Olloqui, E. Picatoste

AU - Valls, B. Pie

AU - Pietrzyk, B.

AU - Pilař, T.

AU - Pinci, D.

AU - Playfer, S.

AU - Casasus, M. Plo

AU - Polci, F.

AU - Polok, G.

AU - Poluektov, A.

AU - Polycarpo, E.

AU - Popov, D.

AU - Popovici, B.

AU - Potterat, C.

AU - Powell, A.

AU - Prisciandaro, J.

AU - Pugatch, V.

AU - Navarro, A. Puig

AU - Qian, W.

AU - Rademacker, J. H.

AU - Rakotomiaramanana, B.

AU - Rangel, M. S.

AU - Raniuk, I.

AU - Rauschmayr, N.

AU - Raven, G.

AU - Redford, S.

AU - Reid, M. M.

AU - Dos Reis, A. C.

AU - Ricciardi, S.

AU - Richards, A.

AU - Rinnert, K.

AU - Romero, D. A.Roa

AU - Robbe, P.

AU - Rodrigues, E.

AU - Perez, P. Rodriguez

AU - Rogers, G. J.

AU - Roiser, S.

AU - Romanovsky, V.

AU - Vidal, A. Romero

AU - Rosello, M.

AU - Rouvinet, J.

AU - Ruf, T.

AU - Ruiz, H.

AU - Sabatino, G.

AU - Silva, J. J.Saborido

AU - Sagidova, N.

AU - Sail, P.

AU - Saitta, B.

AU - Salzmann, C.

AU - Sedes, B. Sanmartin

AU - Sannino, M.

AU - Santacesaria, R.

AU - Rios, C. Santamarina

AU - Santinelli, R.

AU - Santovetti, E.

AU - Sapunov, M.

AU - Sarti, A.

AU - Satriano, C.

AU - Satta, A.

AU - Savrie, M.

AU - Savrina, D.

AU - Schaack, P.

AU - Schiller, M.

AU - Schindler, H.

AU - Schleich, S.

AU - Schlupp, M.

AU - Schmelling, M.

AU - Schmidt, B.

AU - Schneider, O.

AU - Schopper, A.

AU - Schune, M. H.

AU - Schwemmer, R.

AU - Sciascia, B.

AU - Sciubba, A.

AU - Seco, M.

AU - Semennikov, A.

AU - Senderowska, K.

AU - Sepp, I.

AU - Serra, N.

AU - Serrano, J.

AU - Seyfert, P.

AU - Shapkin, M.

AU - Shapoval, I.

AU - Shatalov, P.

AU - Shcheglov, Y.

AU - Shears, T.

AU - Shekhtman, L.

AU - Shevchenko, O.

AU - Shevchenko, V.

AU - Shires, A.

AU - Coutinho, R. Silva

AU - Skwarnicki, T.

AU - Smith, N. A.

AU - Smith, E.

AU - Smith, M.

AU - Sobczak, K.

AU - Soler, F. J.P.

AU - Solomin, A.

AU - Soomro, F.

AU - Souza, D.

AU - De Paula, B. Souza

AU - Spaan, B.

AU - Sparkes, A.

AU - Spradlin, P.

AU - Stagni, F.

AU - Stahl, S.

AU - Steinkamp, O.

AU - Stoica, S.

AU - Stone, S.

AU - Storaci, B.

AU - Straticiuc, M.

AU - Straumann, U.

AU - Subbiah, V. K.

AU - Swientek, S.

AU - Szczekowski, M.

AU - Szczypka, P.

AU - Szumlak, T.

AU - T'Jampens, S.

AU - Teklishyn, M.

AU - Teodorescu, E.

AU - Teubert, F.

AU - Thomas, C.

AU - Thomas, E.

AU - Van Tilburg, J.

AU - Tisserand, V.

AU - Tobin, M.

AU - Tolk, S.

AU - Topp-Joergensen, S.

AU - Torr, N.

AU - Tournefier, E.

AU - Tourneur, S.

AU - Tran, M. T.

AU - Tsaregorodtsev, A.

AU - Tuning, N.

AU - Garcia, M. Ubeda

AU - Ukleja, A.

AU - Uwer, U.

AU - Vagnoni, V.

AU - Valenti, G.

AU - Gomez, R. Vazquez

AU - Regueiro, P. Vazquez

AU - Vecchi, S.

AU - Velthuis, J. J.

AU - Veltri, M.

AU - Veneziano, G.

AU - Vesterinen, M.

AU - Viaud, B.

AU - Videau, I.

AU - Vieira, D.

AU - Vilasis-Cardona, X.

AU - Visniakov, J.

AU - Vollhardt, A.

AU - Volyanskyy, D.

AU - Voong, D.

AU - Vorobyev, A.

AU - Vorobyev, V.

AU - Voß, C.

AU - Voss, H.

AU - Waldi, R.

AU - Wallace, R.

AU - Wandernoth, S.

AU - Wang, J.

AU - Ward, D. R.

AU - Watson, N. K.

AU - Webber, A. D.

AU - Websdale, D.

AU - Whitehead, M.

AU - Wicht, J.

AU - Wiedner, D.

AU - Wiggers, L.

AU - Wilkinson, G.

AU - Williams, M. P.

AU - Williams, M.

AU - Wilson, F. F.

AU - Wishahi, J.

AU - Witek, M.

AU - Witzeling, W.

AU - Wotton, S. A.

AU - Wright, S.

AU - Wu, S.

AU - Wyllie, K.

AU - Xie, Y.

AU - Xing, F.

AU - Xing, Z.

AU - Yang, Z.

AU - Young, R.

AU - Yuan, X.

AU - Yushchenko, O.

AU - Zangoli, M.

AU - Zavertyaev, M.

AU - Zhang, F.

AU - Zhang, L.

AU - Zhang, W. C.

AU - Zhang, Y.

AU - Zhelezov, A.

AU - Zhong, L.

AU - Zvyagin, A.

PY - 2012/1/1

Y1 - 2012/1/1

N2 - A discovery of the rare decay B+ → π+ μ+ μ- is presented. This decay is observed for the first time, with 5.2 σ significance. The observation is made using pp collision data, corresponding to an integrated luminosity of 1.0 fb -1, collected with the LHCb detector. The measured branching fraction is (2.3 ± 0.6 (stat.) ± 0.1 (syst.))×10-8, and the ratio of the B+ → π+ μ+ μ- and B+ → K+ μ+ μ- branching fractions is measured to be 0.053 ± 0.014 (stat.) ± 0.001 (syst.).

AB - A discovery of the rare decay B+ → π+ μ+ μ- is presented. This decay is observed for the first time, with 5.2 σ significance. The observation is made using pp collision data, corresponding to an integrated luminosity of 1.0 fb -1, collected with the LHCb detector. The measured branching fraction is (2.3 ± 0.6 (stat.) ± 0.1 (syst.))×10-8, and the ratio of the B+ → π+ μ+ μ- and B+ → K+ μ+ μ- branching fractions is measured to be 0.053 ± 0.014 (stat.) ± 0.001 (syst.).

KW - Hadron-Hadron Scattering

U2 - 10.1007/JHEP12(2012)125

DO - 10.1007/JHEP12(2012)125

M3 - Article

AN - SCOPUS:84877934417

SN - 1126-6708

VL - 2012

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 12

M1 - 125