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Measurement of the D0 →π-e+νe differential decay branching fraction as a function of q2 and study of form factor parametrizations

  • J. P. Lees
  • , V. Poireau
  • , V. Tisserand
  • , E. Grauges
  • , A. Palano
  • , G. Eigen
  • , B. Stugu
  • , D. N. Brown
  • , L. T. Kerth
  • , Yu G. Kolomensky
  • , M. J. Lee
  • , G. Lynch
  • , H. Koch
  • , T. Schroeder
  • , C. Hearty
  • , T. S. Mattison
  • , J. A. McKenna
  • , R. Y. So
  • , A. Khan
  • , V. E. Blinov
  • A. R. Buzykaev, V. P. Druzhinin, V. B. Golubev, E. A. Kravchenko, A. P. Onuchin, S. I. Serednyakov, Yu I. Skovpen, E. P. Solodov, K. Yu Todyshev, A. J. Lankford, M. Mandelkern, B. Dey, J. W. Gary, O. Long, C. Campagnari, M. Franco Sevilla, T. M. Hong, D. Kovalskyi, J. D. Richman, C. A. West, A. M. Eisner, W. S. Lockman, W. Panduro Vazquez, B. A. Schumm, A. Seiden, D. S. Chao, C. H. Cheng, B. Echenard, K. T. Flood, D. G. Hitlin, T. S. Miyashita, P. Ongmongkolkul, F. C. Porter, M. Röhrken, R. Andreassen, Z. Huard, B. T. Meadows, B. G. Pushpawela, M. D. Sokoloff, L. Sun, P. C. Bloom, W. T. Ford, A. Gaz, J. G. Smith, S. R. Wagner, R. Ayad, W. H. Toki, B. Spaan, D. Bernard, M. Verderi, S. Playfer, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Fioravanti, I. Garzia, E. Luppi, L. Piemontese, V. Santoro, A. Calcaterra, R. De Sangro, G. Finocchiaro, S. Martellotti, P. Patteri, I. M. Peruzzi, M. Piccolo, M. Rama, A. Zallo, R. Contri, M. Lo Vetere, M. R. Monge, S. Passaggio, C. Patrignani, E. Robutti, B. Bhuyan, V. Prasad, A. Adametz, U. Uwer, H. M. Lacker, P. D. Dauncey, U. Mallik, C. Chen, J. Cochran, S. Prell, H. Ahmed, A. V. Gritsan, N. Arnaud, M. Davier, D. Derkach, G. Grosdidier, F. Le Diberder, A. M. Lutz, B. Malaescu, P. Roudeau, A. Stocchi, G. Wormser, D. J. Lange, D. M. Wright, J. P. Coleman, J. R. Fry, E. Gabathuler, D. E. Hutchcroft, D. J. Payne, C. Touramanis, A. J. Bevan, F. Di Lodovico, R. Sacco, G. Cowan, J. Bougher, D. N. Brown, C. L. Davis, A. G. Denig, M. Fritsch, W. Gradl, K. Griessinger, A. Hafner, K. R. Schubert, R. J. Barlow, G. D. Lafferty, R. Cenci, B. Hamilton, A. Jawahery, D. A. Roberts, R. Cowan, G. Sciolla, R. Cheaib, P. M. Patel, S. H. Robertson, N. Neri, F. Palombo, L. Cremaldi, R. Godang, P. Sonnek, D. J. Summers, M. Simard, P. Taras, G. De Nardo, G. Onorato, C. Sciacca, M. Martinelli, G. Raven, C. P. Jessop, J. M. Losecco, K. Honscheid, R. Kass, E. Feltresi, M. Margoni, M. Morandin, M. Posocco, M. Rotondo, G. Simi, F. Simonetto, R. Stroili, S. Akar, E. Ben-Haim, M. Bomben, G. R. Bonneaud, H. Briand, G. Calderini, J. Chauveau, Ph Leruste, G. Marchiori, J. Ocariz, M. Biasini, E. Manoni, S. Pacetti, A. Rossi, C. Angelini, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, A. Cervelli, M. Chrzaszcz, F. Forti, M. A. Giorgi, A. Lusiani, B. Oberhof, E. Paoloni, A. Perez, G. Rizzo, J. J. Walsh, D. Lopes Pegna, J. Olsen, A. J.S. Smith, R. Faccini, F. Ferrarotto, F. Ferroni, M. Gaspero, L. Li Gioi, A. Pilloni, G. Piredda, C. Bünger, S. Dittrich, O. Grünberg, M. Hess, T. Leddig, C. Voß, R. Waldi, T. Adye, E. O. Olaiya, F. F. Wilson, S. Emery, G. Vasseur, F. Anulli, D. Aston, D. J. Bard, C. Cartaro, M. R. Convery, J. Dorfan, G. P. Dubois-Felsmann, W. Dunwoodie, M. Ebert, R. C. Field, B. G. Fulsom, M. T. Graham, C. Hast, W. R. Innes, P. Kim, D. W.G.S. Leith, P. Lewis, D. Lindemann, S. Luitz, V. Luth, H. L. Lynch, D. B. Macfarlane, D. R. Muller, H. Neal, M. Perl, T. Pulliam, B. N. Ratcliff, A. Roodman, A. A. Salnikov, R. H. Schindler, A. Snyder, D. Su, M. K. Sullivan, J. Va'Vra, W. J. Wisniewski, H. W. Wulsin, M. V. Purohit, R. M. White, J. R. Wilson, A. Randle-Conde, S. J. Sekula, M. Bellis, P. R. Burchat, E. M.T. Puccio, M. S. Alam, J. A. Ernst, R. Gorodeisky, N. Guttman, D. R. Peimer, A. Soffer, S. M. Spanier, J. L. Ritchie, A. M. Ruland, R. F. Schwitters, B. C. Wray, J. M. Izen, X. C. Lou, F. Bianchi, F. De Mori, A. Filippi, D. Gamba, L. Lanceri, L. Vitale, F. Martinez-Vidal, A. Oyanguren, P. Villanueva-Perez, J. Albert, Sw Banerjee, A. Beaulieu, F. U. Bernlochner, H. H.F. Choi, G. J. King, R. Kowalewski, M. J. Lewczuk, T. Lueck, I. M. Nugent, J. M. Roney, R. J. Sobie, N. Tasneem, T. J. Gershon, P. F. Harrison, T. E. Latham, H. R. Band, S. Dasu, Y. Pan, R. Prepost, S. L. Wu
  • Université Savoie Mont Blanc
  • University of Barcelona
  • INFN Sezione di Bari
  • Università degli studi di Bari Aldo Moro
  • University of Bergen
  • University of California, Berkeley
  • Ruhr-University Bochum
  • University of British Columbia
  • Brunel University London
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Novosibirsk State University
  • Novosibirsk State Technical University
  • Long Beach VA and University of California
  • University of California, Riverside
  • University of California, Santa Barbara
  • University of California at Santa Cruz
  • California Institute of Technology
  • University of Cincinnati
  • University of Colorado Boulder
  • Cooperative Institute for Research in the Atmosphere
  • University of Dortmund
  • University of Edinburgh
  • Sezione INFN di Ferrara
  • University of Ferrara
  • LNF-INFN
  • Sezione di Genova
  • University of Genoa
  • Department of Biosciences and Bioengineering
  • University of Heidelberg
  • Humboldt-Universität zu Berlin
  • Imperial College London
  • University of Iowa
  • Iowa State University
  • Jazan University
  • Johns Hopkins University
  • Laboratoire de l'Accélérateur Linéaire
  • Lawrence Livermore National Laboratory
  • University of Liverpool
  • Queen Mary University of London
  • Royal Holloway University of London
  • University of Louisville
  • Johannes Gutenberg University
  • University of Manchester
  • University of Maryland, College Park
  • Massachusetts Institute of Technology
  • McGill University
  • Sezione INFN di Milano
  • University of Milano
  • University of Mississippi
  • Universite de Montreal
  • INFN Sezione di Napoli
  • University of Naples Federico II
  • Science Park 105
  • University of Notre Dame
  • The Ohio State University
  • INFN
  • University of Padova
  • Universités Paris VI and VII
  • INFN Sezione di Perugia
  • University of Perugia
  • Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
  • University of Pisa
  • Scuola Normale Superiore di Pisa
  • Princeton University
  • Sezione di Roma
  • Dipartimento di Fisica
  • Universität Rostock
  • CCLRC Rutherford Appleton Laboratory
  • Universite Paris-Saclay
  • Stanford Linear Accelerator Center
  • University of South Carolina
  • Southern Methodist University
  • Stanford University
  • State University of New York Albany
  • Tel Aviv University
  • University of Tennessee
  • The University of Texas at Austin
  • University of Texas
  • INFN Sezione di Torino
  • University of Turin
  • INFN Sezione di Trieste
  • University of Trieste
  • University of Valencia
  • University of Victoria
  • University of Warwick
  • University of Wisconsin-Madison

Research output: Contribution to journalArticlepeer-review

Abstract

Based on a sample of 500 million e+e-→cc¯ events recorded by the BABAR detector at c.m. energies of close to 10.6 GeV, we report on a study of the decay D0→π-e+νe. We measure the ratio of branching fractions, RD=B(D0→π-e+νe)/B(D0→K-π+)=0.0713±0.0017stat±0.0024syst, and use the present world average for B(D0→K-π+) to obtain B(D0→π-e+νe)=(2.770±0.068stat±0.092syst±0.037ext)×10-3 where the third error accounts for the uncertainty on the branching fraction for the reference channel. The measured dependence of the differential branching fraction on q2, the four-momentum transfer squared between the D and the π meson, is compared to various theoretical predictions for the hadronic form factor, f+,Dπ(q2), and the normalization |Vcd|×f+,Dπ(q2=0)=0.1374±0.0038stat±0.0022syst±0.0009ext. is extracted from a fit to data. Using the most recent LQCD prediction of f+,Dπ(q2=0)=0.666±0.029, we obtain |Vcd|=0.206±0.007exp±0.009LQCD. Assuming, instead, |Vcd|=|Vus|=0.2252±0.0009, we obtain f+,Dπ(q2=0)=0.610±0.020exp±0.005ext. The q2 dependence of f+,Dπ(q2) is compared to a variety of multipole parametrizations. This information is applied to B0→π-e+νe decays and, combined with an earlier B0→π-e+νe measurement by BABAR, is used to derive estimates of |Vub|.

Original languageEnglish
Article number052022
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume91
Issue number5
DOIs
Publication statusPublished - 31 Mar 2015

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