Spin-Parity Analysis of pp[over ¯] Mass Threshold Structure in J/ψ and ψ(3686) Radiative Decays
Articolo
Data di Pubblicazione:
2012
Abstract:
A partial wave analysis of the p (p) over bar mass-threshold enhancement in the reaction J/psi -> gamma p (p) over bar is used to determine its J(PC) quantum numbers to be 0(-+), its peak mass to be below threshold at M 1832(-5)(+19)(stat)(-17)(+18)(syst) +/- 19(model) MeV/c(2), and its total width to be Gamma < 76 MeV/c(2) at the 90% C. L. The product of branching ratios is measured to be BR[J/psi -> gamma X(p<(p)over bar>)]BR[X(p (p) over bar) -> p (p) over bar] = [9:0(-1.1)(+0.4)(stat)(-5.0)(+1:5)(syst) +/- 2: 3(model)] x 10(-5). A similar analysis performed on psi(3686) -> gamma p (p) over bar decays shows, for the first time, the presence of a corresponding enhancement with a production rate relative to that for J/psi decays of R = [5.08(-0.45)(+0: 71)(stat)(-058)(+0: 67) (syst) +/- 0: 12(model)%.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
M. Ablikim;M. Achasov;D. Alberto;D. Ambrose;F. An;Q. An;Z. An;J. Bai;R. Baldini Ferroli;Y. Ban;J. Becker;N. Berger;M. Bertani;J. Bian;E. Boger;O. Bondarenko;I. Boyko;R. Briere;V. Bytev;X. Cai;A. Calcaterra;G. Cao;J. Chang;G. Chelkov;G. Chen;H. Chen;J. Chen;M. Chen;S. Chen;Y. Chen;Y. Chen;H. Cheng;Y. Chu;D. Cronin-Hennessy;H. Dai;J. Dai;D. Dedovich;Z. Deng;I. Denysenko;M. Destefanis;W. Ding Ding;Y. Ding;L. Dong;M. Dong;S. Du;J. Fang;S. Fang;C. Feng;C. Fu;J. Fu;Y. Gao;C. Geng;K. Goetzen;W. Gong;M. Greco;M. Gu;Y. Gu;Y. Guan;A. Guo;L. Guo;Y. Guo;Y. Han;X. Hao;F. Harris;K. He;M. He;Z. He;Y. Heng;Z. Hou;H. Hu;J. Hu;T. Hu;B. Huang;G. Huang;J. Huang;X. Huang;Y. Huang;T. Hussain;C. Ji;Q. Ji;X. Ji;X. Ji;L. Jia;L. Jiang;X. Jiang;J. Jiao;Z. Jiao;D. Jin;S. Jin;F. Jing;N. Kalantar-Nayestanaki;M. Kavatsyuk;W. Kuehn;W. Lai;J. Lange;J. Leung;C. Li;Cheng Li;Cui Li;D. Li;F. Li;G. Li;H. Li;J. Li;K. Li;Lei Li;N. Li;Q. Li;S. Li;W. Li;W. Li;X. Li;X. Li;X. Li;X. Li;Z. Li;H. Liang;Y. Liang;Y. Liang;G. Liao;X. Liao;B. Liu;C. Liu;C. Liu;C. Liu;F. Liu;Fang Liu;Feng Liu;H. Liu;H. Liu;H. Liu;H. Liu;H. Liu;J. Liu;K. Liu;K. Liu;K. Liu;Q. Liu;S. Liu;X. Liu;X. Liu;Y. Liu;Yong Liu;Z. Liu;Zhiqiang Liu;Zhiqing Liu;H. Loehner;G. Lu;H. Lu;J. Lu;Q. Lu;X. Lu;Y. Lu;C. Luo;M. Luo;T. Luo;X. Luo;M. Lv;C. Ma;F. Ma;H. Ma;Q. Ma;S. Ma;T. Ma;X. Ma;M. Maggiora;Q. Malik;H. Mao;Y. Mao;Z. Mao;J. Messchendorp;J. Min;T. Min;R. Mitchell;X. Mo;N. Muchnoi;Y. Nefedov;I. Nikolaev;Z. Ning;S. Olsen;Q. Ouyang;S. Pacetti;J. Park;M. Pelizaeus;K. Peters;J. Ping;R. Ping;R. Poling;C. Pun;M. Qi;S. Qian;C. Qiao;X. Qin;J. Qiu;K. Rashid;G. Rong;X. Ruan;A. Sarantsev;J. Schulze;M. Shao;C. Shen;X. Shen;H. Sheng;M. Shepherd;X. Song;S. Spataro;B. Spruck;D. Sun;G. Sun;J. Sun;S. Sun;X. Sun;Y. Sun;Y. Sun;Z. Sun;Z. Sun;C. Tang;X. Tang;E. Thorndike;H. Tian;D. Toth;G. Varner;B. Wang;B. Wang;K. Wang;L. Wang;L. Wang;M. Wang;P. Wang;P. Wang;Q. Wang;Q. Wang;S. Wang;X. Wang;X. Wang;Y. Wang;Y. Wang;Y. Wang;Z. Wang;Z. Wang;Z. Wang;D. Wei;Q. Wen;S. Wen;U. Wiedner;L. Wu;N. Wu;W. Wu;Z. Wu;Z. Xiao;Y. Xie;Q. Xiu;G. Xu;G. Xu;H. Xu;Q. Xu;X. Xu;Y. Xu;Z. Xu;Z. Xue;L. Yan;W. Yan;Y. Yan;H. Yang;T. Yang;Y. Yang;Y. Yang;H. Ye;M. Ye;M. Ye;B. Yu;C. Yu;S. Yu;C. Yuan;W. Yuan;Y. Yuan;A. Zafar;A. Zallo;Y. Zeng;B. Zhang;B. Zhang;C. Zhang;D. Zhang;H. Zhang;H. Zhang;J. Zhang;J. Zhang;J. Zhang;J. Zhang;J. Zhang;L. Zhang;S. Zhang;T. Zhang;X. Zhang;X. Zhang;Y. Zhang;Y. Zhang;Y. Zhang;Z. Zhang;Z. Zhang;G. Zhao;H. Zhao;Jingwei Zhao;Lei Zhao;Ling Zhao;M. Zhao;Q. Zhao;S. Zhao;T. Zhao;X. Zhao;Y. Zhao;Z. Zhao;A. Zhemchugov;B. Zheng;J. Zheng;Y. Zheng;Z. Zheng;B. Zhong;J. Zhong;L. Zhou;X. Zhou;X. Zhou;C. Zhu;K. Zhu;K. Zhu;S. Zhu;X. Zhu;X. Zhu;Y. Zhu;Z. Zhu;J. Zhuang;B. Zou;J. Zou;J. Zuo
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