Data di Pubblicazione:
2012
Abstract:
We study the decays of the J/psi and psi' mesons to pi(+)pi(-)pi(0) using data samples at both resonances collected with the BES III detector in 2009. We measure the corresponding branching fractions with unprecedented precision and provide mass spectra and Dalitz plots. The branching fraction for J/psi -> pi(+)pi(-)pi(0) is determined to be
(2.137 +/- 0.004 (stat.)(-0.056)(+0.058) (syst.)(-0.026)(+0.027) (norm.)) x 10(-2),
and the branching fraction for psi' -> pi(+)pi(-)pi(0) is measured as
(2.14 +/- 0.03 (stat.)(-0.07)(+0.08) (syst.)(-0.08)(+0.09) (norm)) x 10(-4).
The J/psi decay is found to be dominated by an intermediate rho(770) state, whereas the psi' decay is dominated by di-pion masses around 2.2 GeV/c(2), leading to strikingly different Dalitz distributions. (C) 2012 Elsevier B.V. All rights reserved.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
M. Ablikim;M.N. Achasov;D. Alberto;D.J. Ambrose;F.F. An;Q. An;Z.H. An;J.Z. Bai;R.B.F. Baldini Ferroli;Y. Ban;J. Becker;N. Berger;M.B. Bertani;J.M. Bian;E. Boger;O. Bondarenko;I. Boyko;R.A. Briere;V. Bytev;X. Cai;A.C. Calcaterra;G.F. Cao;J.F. Chang;G. Chelkov;G. Chen;H.S. Chen;J.C. Chen;M.L. Chen;S.J. Chen;Y. Chen;Y.B. Chen;H.P. Cheng;Y.P. Chu;D. Cronin-Hennessy;H.L. Dai;J.P. Dai;D. Dedovich;Z.Y. Deng;I. Denysenko;M. Destefanis;W.M. Ding;Y. Ding;L.Y. Dong;M.Y. Dong;S.X. Du;J. Fang;S.S. Fang;C.Q. Feng;C.D. Fu;J.L. Fu;Y. Gao;C. Geng;K. Goetzen;W.X. Gong;M. Greco;M.H. Gu;Y.T. Gu;Y.H. Guan;A.Q. Guo;L.B. Guo;Y.P. Guo;Y.L. Han;X.Q. Hao;F.A. Harris;K.L. He;M. He;Z.Y. He;Y.K. Heng;Z.L. Hou;H.M. Hu;J.F. Hu;T. Hu;B. Huang;G.M. Huang;J.S. Huang;X.T. Huang;Y.P. Huang;T. Hussain;C.S. Ji;Q. Ji;X.B. Ji;X.L. Ji;L.K. Jia;L.L. Jiang;X.S. Jiang;J.B. Jiao;Z. Jiao;D.P. Jin;S. Jin;F.F. Jing;N. Kalantar-Nayestanaki;M. Kavatsyuk;W. Kuehn;W. Lai;J.S. Lange;J.K.C. Leung;C.H. Li;Cheng Li;Cui Li;D.M. Li;F. Li;G. Li;H.B. Li;J.C. Li;K. Li;Lei Li;N.B. Li;Q.J. Li;S.L. Li;W.D. Li;W.G. Li;X.L. Li;X.N. Li;X.Q. Li;X.R. Li;Z.B. Li;H. Liang;Y.F. Liang;Y.T. Liang;G.R. Liao;X.T. Liao;B.J. Liu;B.J. Liu;C.L. Liu;C.X. Liu;C.Y. Liu;F.H. Liu;Fang Liu;Feng Liu;H. Liu;H.B. Liu;H.H. Liu;H.M. Liu;H.W. Liu;J.P. Liu;K. Liu;K. Liu;K.Y. Liu;Q. Liu;S.B. Liu;X. Liu;X.H. Liu;Y.B. Liu;Yong Liu;Z.A. Liu;Zhiqiang Liu;Zhiqing Liu;H. Loehner;G.R. Lu;H.J. Lu;J.G. Lu;Q.W. Lu;X.R. Lu;Y.P. Lu;C.L. Luo;M.X. Luo;T. Luo;X.L. Luo;M. Lv;C.L. Ma;F.C. Ma;H.L. Ma;Q.M. Ma;S. Ma;T. Ma;X.Y. Ma;M. Maggiora;Q.A. Malik;H. Mao;Y.J. Mao;Z.P. Mao;J.G. Messchendorp;J. Min;T.J. Min;R.E. Mitchell;X.H. Mo;N.Yu. Muchnoi;Y. Nefedov;I.B. Nikolaev;Z. Ning;S.L. Olsen;Q. Ouyang;S.P. Pacetti;J.W. Park;M. Pelizaeus;K. Peters;J.L. Ping;R.G. Ping;R. Poling;C.S.J. Pun;M. Qi;S. Qian;C.F. Qiao;X.S. Qin;Z.H. Qin;J.F. Qiu;K.H. Rashid;G. Rong;X.D. Ruan;A. Sarantsev;J. Schulze;M. Shao;C.P. Shen;X.Y. Shen;H.Y. Sheng;M.R. Shepherd;X.Y. Song;S. Spataro;B. Spruck;D.H. Sun;G.X. Sun;J.F. Sun;S.S. Sun;X.D. Sun;Y.J. Sun;Y.Z. Sun;Z.J. Sun;Z.T. Sun;C.J. Tang;X. Tang;E.H. Thorndike;H.L. Tian;D. Toth;M.U. Ulrich;G.S. Varner;B. Wang;B.Q. Wang;K. Wang;L.L. Wang;L.S. Wang;M. Wang;P. Wang;P.L. Wang;Q. Wang;Q.J. Wang;S.G. Wang;X.F. Wang;X.L. Wang;Y.D. Wang;Y.F. Wang;Y.Q. Wang;Z. Wang;Z.G. Wang;Z.Y. Wang;D.H. Wei;Q.G. Wen;S.P. Wen;M.W. Werner;U. Wiedner;L.H. Wu;N. Wu;W. Wu;Z. Wu;L.G. Xia;Z.J. Xiao;Y.G. Xie;Q.L. Xiu;G.F. Xu;G.M. Xu;H. Xu;Q.J. Xu;X.P. Xu;Y. Xu;Z.R. Xu;F. Xue;Z. Xue;L. Yan;W.B. Yan;Y.H. Yan;H.X. Yang;T. Yang;Y. Yang;Y.X. Yang;H. Ye;M. Ye;M.H. Ye;B.X. Yu;C.X. Yu;S.P. Yu;C.Z. Yuan;W.L. Yuan;Y. Yuan;A.A. Zafar;A.Z. Zallo;Y. Zeng;B.X. Zhang;B.Y. Zhang;C.C. Zhang;D.H. Zhang;H.H. Zhang;H.Y. Zhang;J. Zhang;J.Q. Zhang;J.W. Zhang;J.Y. Zhang;J.Z. Zhang;L. Zhang;S.H. Zhang;T.R. Zhang;X.J. Zhang;X.Y. Zhang;Y. Zhang;Y.H. Zhang;Y.S. Zhang;Z.P. Zhang;Z.Y. Zhang;G. Zhao;H.S. Zhao;Jingwei Zhao;Lei Zhao;Ling Zhao;M.G. Zhao;Q. Zhao;S.J. Zhao;T.C. Zhao;X.H. Zhao;Y.B. Zhao;Z.G. Zhao;A. Zhemchugov;B. Zheng;J.P. Zheng;Y.H. Zheng;Z.P. Zheng;B. Zhong;J. Zhong;L. Zhou;X.K. Zhou;X.R. Zhou;C. Zhu;K. Zhu;K.J. Zhu;S.H. Zhu;X.L. Zhu;X.W. Zhu;Y.S. Zhu;Z.A. Zhu;J. Zhuang;B.S. Zou;J.H. Zou;J.X. Zuo
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