Observation of J/psi-->3gamma.
Observation of J/psi-->3gamma.
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DOI：
10.1103/physrevlett.101.101801
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发表时间：
2008-06
影响因子：
8.6
通讯作者：
G. Adams;M. Anderson;J. Cummings;I. Dankó;D. Hu;B. Moziak;J. Napolitano;Q. He;J. Insler;H. Muramatsu;C. S. Park;E. Thorndike;F. Yang;M. Artuso;S. Blusk;S. Khalil;J. Li;R. Mountain;S. Nisar;K. Randrianarivony;N. Sultana;T. Skwarnicki;S. Stone;J. Wang;L. Zhang;G. Bonvicini;D. Cinabro;M. Dubrovin;A. Lincoln;P. Naik;J. Rademacker;D. Asner;K. W. Edwards;J. Reed;R. Briere;T. Ferguson;J. Ma;G. Tatishvili;H. Vogel;M. E. Watkins;J. Rosner;J. Alexander;D. Cassel;J. Duboscq;R. Ehrlich;L. Fields;R. Galik;L. Gibbons;R. Gray;S. Gray;D. Hartill;B. Heltsley;D. Hertz;J. Hunt;J. Kandaswamy;D. Kreinick;V. Kuznetsov;J. Ledoux;H. Mahlke-Krüger;D. Mohapatra;P. Onyisi;J. Patterson;D. Peterson;D. Riley;A. Ryd;A. Sadoff;X. Shi;S. Stroiney;W. Sun;T. Wilksen;S. Athar;R. Patel;J. Yelton;P. Rubin;B. Eisenstein;I. Karliner;S. Mehrabyan;N. Lowrey;M. Selen;E. White;J. Wiss;R. Mitchell;M. Shepherd;D. Besson;T. Pedlar;D. Cronin-Hennessy;K. Gao;J. Hietala;Y. Kubota;T. Klein;B. Lang;R. Poling;A. Scott;P. Zweber;S. Dobbs;Z. Metreveli;K. Seth;A. Tomaradze;J. Libby;A. Powell;G. Wilkinson;K. Ecklund;W. Love;V. Savinov;H. Mendez;J. Ge;D. Miller;I. Shipsey;B. Xin
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文献类型：
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作者：
G. Adams;M. Anderson;J. Cummings;I. Dankó;D. Hu;B. Moziak;J. Napolitano;Q. He;J. Insler;H. Muramatsu;C. S. Park;E. Thorndike;F. Yang;M. Artuso;S. Blusk;S. Khalil;J. Li;R. Mountain;S. Nisar;K. Randrianarivony;N. Sultana;T. Skwarnicki;S. Stone;J. Wang;L. Zhang;G. Bonvicini;D. Cinabro;M. Dubrovin;A. Lincoln;P. Naik;J. Rademacker;D. Asner;K. W. Edwards;J. Reed;R. Briere;T. Ferguson;J. Ma;G. Tatishvili;H. Vogel;M. E. Watkins;J. Rosner;J. Alexander;D. Cassel;J. Duboscq;R. Ehrlich;L. Fields;R. Galik;L. Gibbons;R. Gray;S. Gray;D. Hartill;B. Heltsley;D. Hertz;J. Hunt;J. Kandaswamy;D. Kreinick;V. Kuznetsov;J. Ledoux;H. Mahlke-Krüger;D. Mohapatra;P. Onyisi;J. Patterson;D. Peterson;D. Riley;A. Ryd;A. Sadoff;X. Shi;S. Stroiney;W. Sun;T. Wilksen;S. Athar;R. Patel;J. Yelton;P. Rubin;B. Eisenstein;I. Karliner;S. Mehrabyan;N. Lowrey;M. Selen;E. White;J. Wiss;R. Mitchell;M. Shepherd;D. Besson;T. Pedlar;D. Cronin-Hennessy;K. Gao;J. Hietala;Y. Kubota;T. Klein;B. Lang;R. Poling;A. Scott;P. Zweber;S. Dobbs;Z. Metreveli;K. Seth;A. Tomaradze;J. Libby;A. Powell;G. Wilkinson;K. Ecklund;W. Love;V. Savinov;H. Mendez;J. Ge;D. Miller;I. Shipsey;B. Xin
我们报告了第一次观察到的衰变J/psi- bbb3gamma。该信号具有6sigma的统计显著性，对应于分支分数B(J/psi—>3gamma)=(1.2+/-0.3+/-0.2)x10；{-5}，其中误差分别为统计误差和系统误差。测量使用psi（2S）—>pi;{+}pi；{-}J/psi事件与CLEO-c探测器在CESR e；{+}e；{-}对撞机。
We report the first observation of the decay J/psi-->3gamma. The signal has a statistical significance of 6sigma and corresponds to a branching fraction of B(J/psi-->3gamma)=(1.2+/-0.3+/-0.2)x10;{-5}, in which the errors are statistical and systematic, respectively. The measurement uses psi(2S)-->pi;{+}pi;{-}J/psi events acquired with the CLEO-c detector operating at the CESR e;{+}e;{-} collider.