Helicity Amplitude Analysis of e+e-→ψ(2S) →γχcJ→γ∧-∧→γpπ--pπ+

LIAO Guang-Rui; PING Rong-Gang; YANG Yong-Xu

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Helicity Amplitude Analysis of e+e-→ψ(2S) →γχcJ→γ∧-∧→γpπ--pπ+

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An analysis of the helicity amplitude is performed on the process e+e- →ψ(2S) →γχcJ→γ∧-∧→γpπ--pπ+.The joint angular distributions for each decay chain are given, and we focus on discussing the E1 contributions to ψ(2S) radiative decays, and the violation of the helicity selection rule in χcJ decays into hyperon pairs, together with the possibility of observing parity violation in successive hyperon decays.

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《中国物理快报：英文版》 |2009年第5期|41-43|共3页
作者
LIAO Guang-Rui; PING Rong-Gang; YANG Yong-Xu;
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作者单位

Institute of High Energy Physics, Chinese Academy of Sciences, PO BOX 918(1), Beijing 100049;

Department of Physics, Guangxi Normal University, Guilin 541004;

Institute of High Energy Physics, Chinese Academy of Sciences, PO BOX 918(1), Beijing 100049;

Department of Physics, Guangxi Normal University, Guilin 541004;

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中图分类物理学;
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Helicity Amplitude Analysis of e+e-→ψ(2S) →γχcJ→γ∧-∧→γpπ--pπ+

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