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

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

Abstract

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.

Original language	English
Article number	142001
Journal	Physical Review Letters
Volume	95
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.95.142001
Publication status	Published - 30 Sept 2005
Externally published	Yes

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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, no. 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.

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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