Mini-review of rare charmonium decays at BESⅢ

LI Hai-Bo; ZHU Shi-Hai

doi:10.1088/1674-1137/36/10/003

Chinese Physics C> 2012, Vol. 36> Issue(10) : 932-940 DOI: 10.1088/1674-1137/36/10/003

Mini-review of rare charmonium decays at BESⅢ

LI Hai-Bo ^, ,
ZHU Shi-Hai ^,

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Abstract：
Recently, the LHCb experiment announced 3.5σ evidence for direct CP violation in D⁰ decay by looking at the difference between A_CP(D⁰→K⁺K^-) and A_CP(D⁰→π⁺π^-). This is the rst evidence of CP violation in a charm system, which may indicate new physics beyond the Standard Model. Motivated by this measurement, we review rare processes in charmonium decay, especially, the weak decay, C or P violated decay, and lepton avor violated decays. In case the new physics appears in charm sector, these rare decays of charmonium states will provide an opportunity to search for signi cant contributions from physics beyond the Standard Model. With huge J/ψ and ψ(2S) samples in BES0 experiment, the rare decays may be feasible.

References

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LI Hai-Bo and ZHU Shi-Hai. Mini-review of rare charmonium decays at BESⅢ[J]. Chinese Physics C, 2012, 36(10): 932-940. doi: 10.1088/1674-1137/36/10/003

LI Hai-Bo and ZHU Shi-Hai. Mini-review of rare charmonium decays at BESⅢ[J]. Chinese Physics C, 2012, 36(10): 932-940. doi: 10.1088/1674-1137/36/10/003 shu

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Received: 2012-01-13
Revised: 2012-02-14

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Mini-review of rare charmonium decays at BESⅢ

Corresponding author: LI Hai-Bo,

Corresponding author: ZHU Shi-Hai,

Received Date: 2012-01-13

Accepted Date: 2012-02-14

Available Online: 2012-10-05

Abstract: Recently, the LHCb experiment announced 3.5σ evidence for direct CP violation in D⁰ decay by looking at the difference between A_CP(D⁰→K⁺K^-) and A_CP(D⁰→π⁺π^-). This is the rst evidence of CP violation in a charm system, which may indicate new physics beyond the Standard Model. Motivated by this measurement, we review rare processes in charmonium decay, especially, the weak decay, C or P violated decay, and lepton avor violated decays. In case the new physics appears in charm sector, these rare decays of charmonium states will provide an opportunity to search for signi cant contributions from physics beyond the Standard Model. With huge J/ψ and ψ(2S) samples in BES0 experiment, the rare decays may be feasible.

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Mini-review of rare charmonium decays at BESⅢ

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