Y(4260) as the first S-wave open charm vector molecular state?

被引：75
作者：
Cleven, Martin [1 ,2 ]
Wang, Qian [1 ,2 ]
Guo, Feng-Kun [3 ,4 ]
Hanhart, Christoph [1 ,2 ,5 ]
Meissner, Ulf-G. [1 ,2 ,3 ,4 ,5 ]
Zhao, Qiang [6 ,7 ]
机构：
[1] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany
[2] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany
[3] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany
[4] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany
[5] Forschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, Germany
[6] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
[7] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
来源：
PHYSICAL REVIEW D | 2014年 / 90卷 / 07期
基金：
中国国家自然科学基金;
关键词：
PARTICLES;
D O I：
10.1103/PhysRevD.90.074039
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Since its first observation in 2005, the vector charmonium Y(4260) has turned out to be one of the prime candidates for an exotic state in the charmonium spectrum. It was recently proposed that the Y(4260) should have a prominent D-1(D) over bar + c.c molecular component that is strongly correlated with the production of the charged Z(c)(3900). In this paper we demonstrate that the nontrivial cross section line shapes of e(+)e(-) --> J/Psi pi pi and h(c)pi pi can be naturally explained by the molecular scenario. As a consequence we find a significantly smaller mass for the Y(4260) than previously studied. In the e(+)e(-) --> (D) over barD*pi + c.c. process, with the inclusion of an additional S-wave (D) over bar*pi contribution constrained from data on the D (D) over bar* invariant mass distribution, we obtain a good agreement with the data of the angular distributions. We also predict an unusual line shape of Y(4260) in this channel that may serve as a smoking gun for a predominantly molecular nature of Y(4260). Improved measurements of these observables are therefore crucial for a better understanding of the structure of this famous resonance.
引用
收藏
页数：7
相关论文
共 39 条
  • [1] Observation of a Charged Charmoniumlike Structure in e+e- → (D* (D)over-bar*)±π∓ at √s=4.26 GeV
    Ablikim, M.
    Achasov, M. N.
    Albayrak, O.
    Ambrose, D. J.
    An, F. F.
    An, Q.
    Bai, J. Z.
    Ferroli, R. Baldini
    Ban, Y.
    Becker, J.
    Bennett, J. V.
    Bertani, M.
    Bian, J. M.
    Boger, E.
    Bondarenko, O.
    Boyko, I.
    Braun, S.
    Briere, R. A.
    Bytev, V.
    Cai, H.
    Cai, X.
    Cakir, O.
    Calcaterra, A.
    Cao, G. F.
    Cetin, S. A.
    Chang, J. F.
    Chelkov, G.
    Chen, G.
    Chen, H. S.
    Chen, J. C.
    Chen, M. L.
    Chen, S. J.
    Chen, X. R.
    Chen, Y. B.
    Cheng, H. P.
    Chu, Y. P.
    Cronin-Hennessy, D.
    Dai, H. L.
    Dai, J. P.
    Dedovich, D.
    Deng, Z. Y.
    Denig, A.
    Denysenko, I.
    Destefanis, M.
    Ding, W. M.
    Ding, Y.
    Dong, L. Y.
    Dong, M. Y.
    Du, S. X.
    Fang, J.
    [J]. PHYSICAL REVIEW LETTERS, 2014, 112 (13)
  • [2] Observation of a Charged (D(D)over-bar*)± Mass Peak in e+e- → πD(D)over-bar* at √s=4.26 GeV
    Ablikim, M.
    Achasov, M. N.
    Albayrak, O.
    Ambrose, D. J.
    An, F. F.
    An, Q.
    Bai, J. Z.
    Ferroli, R. Baldini
    Ban, Y.
    Becker, J.
    Bennett, J. V.
    Bertani, M.
    Bian, J. M.
    Boger, E.
    Bondarenko, O.
    Boyko, I.
    Braun, S.
    Briere, R. A.
    Bytev, V.
    Cai, H.
    Cai, X.
    Cakir, O.
    Calcaterra, A.
    Cao, G. F.
    Cetin, S. A.
    Chang, J. F.
    Chelkov, G.
    Chen, G.
    Chen, H. S.
    Chen, J. C.
    Chen, M. L.
    Chen, S. J.
    Chen, X. R.
    Chen, Y. B.
    Cheng, H. P.
    Chu, X. K.
    Chu, Y. P.
    Cronin-Hennessy, D.
    Dai, H. L.
    Dai, J. P.
    Dedovich, D.
    Deng, Z. Y.
    Denig, A.
    Denysenko, I.
    Destefanis, M.
    Ding, W. M.
    Ding, Y.
    Dong, L. Y.
    Dong, M. Y.
    Du, S. X.
    [J]. PHYSICAL REVIEW LETTERS, 2014, 112 (02)
  • [3] Observation of a Charged Charmoniumlike Structure Zc (4020) and Search for the Zc (3900) in e+e- → π+ π-hc
    Ablikim, M.
    Achasov, M. N.
    Albayrak, O.
    Ambrose, D. J.
    An, F. F.
    An, Q.
    Bai, J. Z.
    Ferroli, R. Baldini
    Ban, Y.
    Becker, J.
    Bennett, J. V.
    Bertani, M.
    Bian, J. M.
    Boger, E.
    Bondarenko, O.
    Boyko, I.
    Braun, S.
    Briere, R. A.
    Bytev, V.
    Cai, H.
    Cai, X.
    Cakir, O.
    Calcaterra, A.
    Cao, G. F.
    Cetin, S. A.
    Chang, J. F.
    Chelkov, G.
    Chen, G.
    Chen, H. S.
    Chen, J. C.
    Chen, M. L.
    Chen, S. J.
    Chen, X. R.
    Chen, Y. B.
    Cheng, H. P.
    Chu, X. K.
    Chu, Y. P.
    Cronin-Hennessy, D.
    Dai, H. L.
    Dai, J. P.
    Dedovich, D.
    Deng, Z. Y.
    Denig, A.
    Denysenko, I.
    Destefanis, M.
    Ding, W. M.
    Ding, Y.
    Dong, L. Y.
    Dong, M. Y.
    Du, S. X.
    [J]. PHYSICAL REVIEW LETTERS, 2013, 111 (24)
  • [4] Observation of a Charged Charmoniumlike Structure in e+e- → π+π- J/ψ at √s=4.26 GeV
    Ablikim, M.
    Achasov, M. N.
    Ai, X. C.
    Albayrak, O.
    Ambrose, D. J.
    An, F. F.
    An, Q.
    Bai, J. Z.
    Ferroli, R. Baldini
    Ban, Y.
    Becker, J.
    Bennett, J. V.
    Bertani, M.
    Bian, J. M.
    Boger, E.
    Bondarenko, O.
    Boyko, I.
    Briere, R. A.
    Bytev, V.
    Cai, H.
    Cai, X.
    Cakir, O.
    Calcaterra, A.
    Cao, G. F.
    Cetin, S. A.
    Chang, J. F.
    Chelkov, G.
    Chen, G.
    Chen, H. S.
    Chen, J. C.
    Chen, M. L.
    Chen, S. J.
    Chen, X.
    Chen, Y. B.
    Cheng, H. P.
    Chu, Y. P.
    Cronin-Hennessy, D.
    Dai, H. L.
    Dai, J. P.
    Dedovich, D.
    Deng, Z. Y.
    Denig, A.
    Denysenko, I.
    Destefanis, M.
    Ding, W. M.
    Ding, Y.
    Dong, L. Y.
    Dong, M. Y.
    Du, S. X.
    Fang, J.
    [J]. PHYSICAL REVIEW LETTERS, 2013, 110 (25)
  • [5] Evidence of a broad structure at an invariant mass of 4.32 GeV/c2 in the reaction e+e-→π+π-ψ(2S) measured at BABAR
    Aubert, B.
    Barate, R.
    Bona, M.
    Boutigny, D.
    Couderc, F.
    Karyotakis, Y.
    Lees, J. P.
    Poireau, V.
    Tisserand, V.
    Zghiche, A.
    Grauges, E.
    Palano, A.
    Chen, J. C.
    Qi, N. D.
    Rong, G.
    Wang, P.
    Zhu, Y. S.
    Eigen, G.
    Ofte, I.
    Stugu, B.
    Abrams, G. S.
    Battaglia, M.
    Brown, D. N.
    Button-Shafer, J.
    Cahn, R. N.
    Charles, E.
    Gill, M. S.
    Groysman, Y.
    Jacobsen, R. G.
    Kadyk, J. A.
    Kerth, L. T.
    Kolomensky, Yu. G.
    Kukartsev, G.
    Lynch, G.
    Mir, L. M.
    Orimoto, T. J.
    Pripstein, M.
    Roe, N. A.
    Ronan, M. T.
    Wenzel, W. A.
    Sanchez, P. del amo
    Barrett, M.
    Ford, K. E.
    Harrison, T. J.
    Hart, A. J.
    Hawkes, C. M.
    Morgan, S. E.
    Watson, A. T.
    Held, T.
    Koch, H.
    [J]. PHYSICAL REVIEW LETTERS, 2007, 98 (21)
  • [6] Aubert B, 2005, PHYS REV LETT, V95, DOI [10.1103/PhysRevLett.95.042001, 10.1103/PhysRevLett.95.142001]
  • [7] Evidence that the a0(980) and f0(980) are not elementary particles
    Baru, V
    Haidenbauer, J
    Hanhart, C
    Kalashnikova, Y
    Kudryavtsev, A
    [J]. PHYSICS LETTERS B, 2004, 586 (1-2) : 53 - 61
  • [8] REVIEW OF PARTICLE PHYSICS Particle Data Group
    Beringer, J.
    Arguin, J. -F.
    Barnett, R. M.
    Copic, K.
    Dahl, O.
    Groom, D. E.
    Lin, C. -J.
    Lys, J.
    Murayama, H.
    Wohl, C. G.
    Yao, W. -M.
    Zyla, P. A.
    Amsler, C.
    Antonelli, M.
    Asner, D. M.
    Baer, H.
    Band, H. R.
    Basaglia, T.
    Bauer, C. W.
    Beatty, J. J.
    Belousov, V. I.
    Bergren, E.
    Bernardi, G.
    Bertl, W.
    Bethke, S.
    Bichsel, H.
    Biebel, O.
    Blucher, E.
    Blusk, S.
    Brooijmans, G.
    Buchmueller, O.
    Cahn, R. N.
    Carena, M.
    Ceccucci, A.
    Chakraborty, D.
    Chen, M. -C.
    Chivukula, R. S.
    Cowan, G.
    D'Ambrosio, G.
    Damour, T.
    de Florian, D.
    de Gouvea, A.
    DeGrand, T.
    de Jong, P.
    Dissertori, G.
    Dobrescu, B.
    Doser, M.
    Drees, M.
    Edwards, D. A.
    Eidelman, S.
    [J]. PHYSICAL REVIEW D, 2012, 86 (01):
  • [9] Heavy quarkonium: progress, puzzles, and opportunities
    Brambilla, N.
    Eidelman, S.
    Heltsley, B. K.
    Vogt, R.
    Bodwin, G. T.
    Eichten, E.
    Frawley, A. D.
    Meyer, A. B.
    Mitchell, R. E.
    Papadimitriou, V.
    Petreczky, P.
    Petrov, A. A.
    Robbe, P.
    Vairo, A.
    Andronic, A.
    Arnaldi, R.
    Artoisenet, P.
    Bali, G.
    Bertolin, A.
    Bettoni, D.
    Brodzicka, J.
    Bruno, G. E.
    Caldwell, A.
    Catmore, J.
    Chang, C. -H.
    Chao, K. -T.
    Chudakov, E.
    Cortese, P.
    Crochet, P.
    Drutskoy, A.
    Ellwanger, U.
    Faccioli, P.
    Mokhtar, A. Gabareen
    Garcia i Tormo, X.
    Hanhart, C.
    Harris, F. A.
    Kaplan, D. M.
    Klein, S. R.
    Kowalski, H.
    Lansberg, J. -P.
    Levichev, E.
    Lombardo, V.
    Lourenco, C.
    Maltoni, F.
    Mocsy, A.
    Mussa, R.
    Navarra, F. S.
    Negrini, M.
    Nielsen, M.
    Olsen, S. L.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2011, 71 (02): : 1 - 178
  • [10] Bound state nature of the exotic Zb states
    Cleven, M.
    Guo, F. -K.
    Hanhart, C.
    Meissner, U. -G.
    [J]. EUROPEAN PHYSICAL JOURNAL A, 2011, 47 (10)
1234