Observation of a broad structure in the n+n-J/ψ mass spectrum around 4.26GeV/c2

B. Aubert; R. Barate; D. Boutigny; F. Couderc; Y. Karyotakis; J. P. Lees; V. Poireau; V. Tisserand; A. Zghiche; E. Grauges; A. Palano; M. Pappagallo; A. Pompili; J. C. Chen; N. D. Qi; G. Rong; P. Wang; Y. S. Zhu; G. Eigen; I. Ofte; B. Stugu; G. S. Abrams; M. Battaglia; A. B. Breon; D. N. Brown; J. Button-Shafer; R. N. Cahn; E. Charles; C. T. Day; M. S. Gill; A. V. Gritsan; Y. Groysman; R. G. Jacobsen; R. W. Kadel; J. Kadyk; L. T. Kerth; Yu G. Kolomensky; G. Kukartsev; G. Lynch; L. M. Mir; P. J. Oddone; T. J. Orimoto; M. Pripstein; N. A. Roe; M. T. Ronan; W. A. Wenzel; M. Barrett; K. E. Ford; T. J. Harrison; A. J. Hart; C. M. Hawkes; S. E. Morgan; A. T. Watson; M. Fritsch; K. Goetzen; T. Held; H. Koch; B. Lewandowski; M. Pelizaeus; K. Peters; T. Schroeder; M. Steinke; J. T. Boyd; J. P. Burke; N. Chevalier; W. N. Cottingham; T. Cuhadar-Donszelmann; B. G. Fulsom; C. Hearty; N. S. Knecht; T. S. Mattison; J. A. McKenna; A. Khan; P. Kyberd; M. Saleem; L. Teodorescu; A. E. Blinov; V. E. Blinov; A. D. Bukin; V. P. Druzhinin; V. B. Golubev; E. A. Kravchenko; A. P. Onuchin; S. I. Serednyakov; Yu I. Skovpen; E. P. Solodov; A. N. Yushkov; D. Best; M. Bondioli; M. Bruinsma; M. Chao; S. Curry; I. Eschrich; D. Kirkby; A. J. Lankford; P. Lund; M. Mandelkern; R. K. Mommsen; W. Roethel

doi:10.1103/PhysRevLett.95.142001

Observation of a broad structure in the n+n-J/ψ mass spectrum around 4.26GeV/c2

B. Aubert
, R. Barate
, D. Boutigny
, F. Couderc
, Y. Karyotakis
, J. P. Lees
, V. Poireau
, V. Tisserand
, A. Zghiche
, E. Grauges
, A. Palano
, M. Pappagallo
, A. Pompili
, J. C. Chen
, N. D. Qi
, G. Rong
, P. Wang
, Y. S. Zhu
, G. Eigen
, I. Ofte

B. Stugu, G. S. Abrams, M. Battaglia, A. B. Breon, D. N. Brown, J. Button-Shafer, R. N. Cahn, E. Charles, C. T. Day, M. S. Gill, A. V. Gritsan, Y. Groysman, R. G. Jacobsen, R. W. Kadel, J. Kadyk, L. T. Kerth, Yu G. Kolomensky, G. Kukartsev, G. Lynch, L. M. Mir, P. J. Oddone, T. J. Orimoto, M. Pripstein, N. A. Roe, M. T. Ronan, W. A. Wenzel, M. Barrett, K. E. Ford, T. J. Harrison, A. J. Hart, C. M. Hawkes, S. E. Morgan, A. T. Watson, M. Fritsch, K. Goetzen, T. Held, H. Koch, B. Lewandowski, M. Pelizaeus, K. Peters, T. Schroeder, M. Steinke, J. T. Boyd, J. P. Burke, N. Chevalier, W. N. Cottingham, T. Cuhadar-Donszelmann, B. G. Fulsom, C. Hearty, N. S. Knecht, T. S. Mattison, J. A. McKenna, A. Khan, P. Kyberd, M. Saleem, L. Teodorescu, A. E. Blinov, V. E. Blinov, A. D. Bukin, V. P. Druzhinin, V. B. Golubev, E. A. Kravchenko, A. P. Onuchin, S. I. Serednyakov, Yu I. Skovpen, E. P. Solodov, A. N. Yushkov, D. Best, M. Bondioli, M. Bruinsma, M. Chao, S. Curry, I. Eschrich, D. Kirkby, A. J. Lankford, P. Lund, M. Mandelkern, R. K. Mommsen, W. Roethel

Laboratoire de Physique des Particules
University of São Paulo
Università degli studi di Bari Aldo Moro
Institute of High Energy Physics, Chinese Academy of Sciences
University of Bergen
University of California, Berkeley
University of Birmingham
Ruhr-University Bochum
University of Bristol
University of British Columbia
Brunel University London
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Long Beach VA and University of California

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

We study initial-state radiation events, e+e- â†'ÎISRÏ€+Ï€-J/Ï, with data collected with the BABAR detector. We observe an accumulation of events near 4.26GeV/c2 in the invariant-mass spectrum of Ï€+Ï€-J/Ï. Fits to the mass spectrum indicate that a broad resonance with a mass of about 4.26GeV/c2 is required to describe the observed structure. The presence of additional narrow resonances cannot be excluded. The fitted width of the broad resonance is 50 to 90MeV/c2, depending on the fit hypothesis.

langue originale	Anglais
Numéro d'article	142001
journal	Physical Review Letters
Volume	95
Numéro de publication	14
Les DOIs	https://doi.org/10.1103/PhysRevLett.95.142001
état	Publié - 30 sept. 2005
Modification externe	Oui

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10.1103/PhysRevLett.95.142001

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Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Pappagallo, M., Pompili, A., Chen, J. C., Qi, N. D., Rong, G., Wang, P., Zhu, Y. S., Eigen, G., ... Roethel, W. (2005). Observation of a broad structure in the n+n-J/ψ mass spectrum around 4.26GeV/c2. Physical Review Letters, 95(14), Article 142001. https://doi.org/10.1103/PhysRevLett.95.142001

@article{ad63336442cc498b9e0b603796556af5,

title = "Observation of a broad structure in the n+n-J/ψ mass spectrum around 4.26GeV/c2",

abstract = "We study initial-state radiation events, e+e- {\^a}†'{\^I}ISR{\"I}€+{\"I}€-J/{\"I}, with data collected with the BABAR detector. We observe an accumulation of events near 4.26GeV/c2 in the invariant-mass spectrum of {\"I}€+{\"I}€-J/{\"I}. Fits to the mass spectrum indicate that a broad resonance with a mass of about 4.26GeV/c2 is required to describe the observed structure. The presence of additional narrow resonances cannot be excluded. The fitted width of the broad resonance is 50 to 90MeV/c2, depending on the fit hypothesis.",

author = "B. Aubert and R. Barate and D. Boutigny and F. Couderc and Y. Karyotakis and Lees, \{J. P.\} and V. Poireau and V. Tisserand and A. Zghiche and E. Grauges and A. Palano and M. Pappagallo and A. Pompili and Chen, \{J. C.\} and Qi, \{N. D.\} and G. Rong and P. Wang and Zhu, \{Y. S.\} and G. Eigen and I. Ofte and B. Stugu and Abrams, \{G. S.\} and M. Battaglia and Breon, \{A. B.\} and Brown, \{D. N.\} and J. Button-Shafer and Cahn, \{R. N.\} and E. Charles and Day, \{C. T.\} and Gill, \{M. S.\} and Gritsan, \{A. V.\} and Y. Groysman and Jacobsen, \{R. G.\} and Kadel, \{R. W.\} and J. Kadyk and Kerth, \{L. T.\} and Kolomensky, \{Yu G.\} and G. Kukartsev and G. Lynch and Mir, \{L. M.\} and Oddone, \{P. J.\} and Orimoto, \{T. J.\} and M. Pripstein and Roe, \{N. A.\} and Ronan, \{M. T.\} and Wenzel, \{W. A.\} and M. Barrett and Ford, \{K. E.\} and Harrison, \{T. J.\} and Hart, \{A. J.\} and Hawkes, \{C. M.\} and Morgan, \{S. E.\} and Watson, \{A. T.\} and M. Fritsch and K. Goetzen and T. Held and H. Koch and B. Lewandowski and M. Pelizaeus and K. Peters and T. Schroeder and M. Steinke and Boyd, \{J. T.\} and Burke, \{J. P.\} and N. Chevalier and Cottingham, \{W. N.\} and T. Cuhadar-Donszelmann and Fulsom, \{B. G.\} and C. Hearty and Knecht, \{N. S.\} and Mattison, \{T. S.\} and McKenna, \{J. A.\} and A. Khan and P. Kyberd and M. Saleem and L. Teodorescu and Blinov, \{A. E.\} and Blinov, \{V. E.\} and Bukin, \{A. D.\} and Druzhinin, \{V. P.\} and Golubev, \{V. B.\} and Kravchenko, \{E. A.\} and Onuchin, \{A. P.\} and Serednyakov, \{S. I.\} and Skovpen, \{Yu I.\} and Solodov, \{E. P.\} and Yushkov, \{A. N.\} and D. Best and M. Bondioli and M. Bruinsma and M. Chao and S. Curry and I. Eschrich and D. Kirkby and Lankford, \{A. J.\} and P. Lund and M. Mandelkern and Mommsen, \{R. K.\} and W. Roethel",

year = "2005",

month = sep,

day = "30",

doi = "10.1103/PhysRevLett.95.142001",

language = "English",

volume = "95",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "14",

}

Aubert, B, Barate, R, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, JP, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Pompili, A, Chen, JC, Qi, ND, Rong, G, Wang, P, Zhu, YS, Eigen, G, Ofte, I, Stugu, B, Abrams, GS, Battaglia, M, Breon, AB, Brown, DN, Button-Shafer, J, Cahn, RN, Charles, E, Day, CT, Gill, MS, Gritsan, AV, Groysman, Y, Jacobsen, RG, Kadel, RW, Kadyk, J, Kerth, LT, Kolomensky, YG, Kukartsev, G, Lynch, G, Mir, LM, Oddone, PJ, Orimoto, TJ, Pripstein, M, Roe, NA, Ronan, MT, Wenzel, WA, Barrett, M, Ford, KE, Harrison, TJ, Hart, AJ, Hawkes, CM, Morgan, SE, Watson, AT, Fritsch, M, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Peters, K, Schroeder, T, Steinke, M, Boyd, JT, Burke, JP, Chevalier, N, Cottingham, WN, Cuhadar-Donszelmann, T, Fulsom, BG, Hearty, C, Knecht, NS, Mattison, TS, McKenna, JA, Khan, A, Kyberd, P, Saleem, M, Teodorescu, L, Blinov, AE, Blinov, VE, Bukin, AD, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Yushkov, AN, Best, D, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, AJ, Lund, P, Mandelkern, M, Mommsen, RK & Roethel, W 2005, 'Observation of a broad structure in the n+n-J/ψ mass spectrum around 4.26GeV/c2', Physical Review Letters, VOL. 95, Numéro 14, 142001. https://doi.org/10.1103/PhysRevLett.95.142001

TY - JOUR

T1 - Observation of a broad structure in the n+n-J/ψ mass spectrum around 4.26GeV/c2

AU - Aubert, B.

AU - Barate, R.

AU - Boutigny, D.

AU - Couderc, F.

AU - Karyotakis, Y.

AU - Lees, J. P.

AU - Poireau, V.

AU - Tisserand, V.

AU - Zghiche, A.

AU - Grauges, E.

AU - Palano, A.

AU - Pappagallo, M.

AU - Pompili, A.

AU - Chen, J. C.

AU - Qi, N. D.

AU - Rong, G.

AU - Wang, P.

AU - Zhu, Y. S.

AU - Eigen, G.

AU - Ofte, I.

AU - Stugu, B.

AU - Abrams, G. S.

AU - Battaglia, M.

AU - Breon, A. B.

AU - Brown, D. N.

AU - Button-Shafer, J.

AU - Cahn, R. N.

AU - Charles, E.

AU - Day, C. T.

AU - Gill, M. S.

AU - Gritsan, A. V.

AU - Groysman, Y.

AU - Jacobsen, R. G.

AU - Kadel, R. W.

AU - Kadyk, J.

AU - Kerth, L. T.

AU - Kolomensky, Yu G.

AU - Kukartsev, G.

AU - Lynch, G.

AU - Mir, L. M.

AU - Oddone, P. J.

AU - Orimoto, T. J.

AU - Pripstein, M.

AU - Roe, N. A.

AU - Ronan, M. T.

AU - Wenzel, W. A.

AU - Barrett, M.

AU - Ford, K. E.

AU - Harrison, T. J.

AU - Hart, A. J.

AU - Hawkes, C. M.

AU - Morgan, S. E.

AU - Watson, A. T.

AU - Fritsch, M.

AU - Goetzen, K.

AU - Held, T.

AU - Koch, H.

AU - Lewandowski, B.

AU - Pelizaeus, M.

AU - Peters, K.

AU - Schroeder, T.

AU - Steinke, M.

AU - Boyd, J. T.

AU - Burke, J. P.

AU - Chevalier, N.

AU - Cottingham, W. N.

AU - Cuhadar-Donszelmann, T.

AU - Fulsom, B. G.

AU - Hearty, C.

AU - Knecht, N. S.

AU - Mattison, T. S.

AU - McKenna, J. A.

AU - Khan, A.

AU - Kyberd, P.

AU - Saleem, M.

AU - Teodorescu, L.

AU - Blinov, A. E.

AU - Blinov, V. E.

AU - Bukin, A. D.

AU - Druzhinin, V. P.

AU - Golubev, V. B.

AU - Kravchenko, E. A.

AU - Onuchin, A. P.

AU - Serednyakov, S. I.

AU - Skovpen, Yu I.

AU - Solodov, E. P.

AU - Yushkov, A. N.

AU - Best, D.

AU - Bondioli, M.

AU - Bruinsma, M.

AU - Chao, M.

AU - Curry, S.

AU - Eschrich, I.

AU - Kirkby, D.

AU - Lankford, A. J.

AU - Lund, P.

AU - Mandelkern, M.

AU - Mommsen, R. K.

AU - Roethel, W.

PY - 2005/9/30

Y1 - 2005/9/30

N2 - We study initial-state radiation events, e+e- â†'ÎISRÏ€+Ï€-J/Ï, with data collected with the BABAR detector. We observe an accumulation of events near 4.26GeV/c2 in the invariant-mass spectrum of Ï€+Ï€-J/Ï. Fits to the mass spectrum indicate that a broad resonance with a mass of about 4.26GeV/c2 is required to describe the observed structure. The presence of additional narrow resonances cannot be excluded. The fitted width of the broad resonance is 50 to 90MeV/c2, depending on the fit hypothesis.

AB - We study initial-state radiation events, e+e- â†'ÎISRÏ€+Ï€-J/Ï, with data collected with the BABAR detector. We observe an accumulation of events near 4.26GeV/c2 in the invariant-mass spectrum of Ï€+Ï€-J/Ï. Fits to the mass spectrum indicate that a broad resonance with a mass of about 4.26GeV/c2 is required to describe the observed structure. The presence of additional narrow resonances cannot be excluded. The fitted width of the broad resonance is 50 to 90MeV/c2, depending on the fit hypothesis.

UR - https://www.scopus.com/pages/publications/28844490602

U2 - 10.1103/PhysRevLett.95.142001

DO - 10.1103/PhysRevLett.95.142001

M3 - Article

AN - SCOPUS:28844490602

SN - 0031-9007

VL - 95

JO - Physical Review Letters

JF - Physical Review Letters

IS - 14

M1 - 142001

ER -

Observation of a broad structure in the n+n-J/ψ mass spectrum around 4.26GeV/c2

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