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.

Precision measurement of the branching fractions of J/ψ→π+π−π0 and ψ′→π+π−π0

DESTEFANIS, MARCO GIOVANNI;GRECO, Michela;MAGGIORA, MARCO;SPATARO, STEFANO GIOVANNI;
2012-01-01

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.
2012
710
594
599
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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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/102084
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