Search for ψ(4S) → ηJ/ψ in B~±→ ηJ/ψK~± and e^+e^-→ ηJ/ψ processes

Search for ψ(4S) → ηJ/ψ in B~±→ ηJ/ψK~± and e^+e^-→ ηJ/ψ processes

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摘要 We search for the ψ（4S）state in the B±→ηJ/ψK± and e＋e-→η/Jψ processes based on the Belle measurements with the assumed mass M =（4230±8）MeV/C2 and width Г=（38±12）MeV. No significant signal is observed in the in mass spectra. The 90% confidence level upper limit on the product branching fraction B（B±→（4S）→e＋e-to be 0.63 keV,a branching fraction limit B（ψ（4S）→ηJ/ψ）〈1.3% is obtained at the 90% confidence level in e＋e-→η/Jψ,which is consistent with the theoretical prediction. We search for the ψ（4S）state in the B±→ηJ/ψK± and e＋e-→η/Jψ processes based on the Belle measurements with the assumed mass M =（4230±8）MeV/C2 and width Г=（38±12）MeV. No significant signal is observed in the in mass spectra. The 90% confidence level upper limit on the product branching fraction B（B±→（4S）→e＋e-to be 0.63 keV,a branching fraction limit B（ψ（4S）→ηJ/ψ）〈1.3% is obtained at the 90% confidence level in e＋e-→η/Jψ,which is consistent with the theoretical prediction.

作者高旭阳王小龙沈成平

机构地区 School of Physics and Nuclear Energy Engineering Institute of High Energy Physics CNP

出处《Chinese Physics C》 SCIE CAS CSCD 2016年第1期23-27,共5页 中国物理C（英文版）

基金 Supported by Fundamental Research Funds for the Central Universities(YWF-14-WLXY-013) National Natural Science Foundation of China(11575017) CAS Center for Excellence in Particle Physics(China)

关键词 ψ（4S） ηJ/ψ upper limit branching fraction ψ（4S）,ηJ/ψ, upper limit, branching fraction

分类号 O572.33 [理学—粒子物理与原子核物理]

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参考文献16

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Search for ψ(4S) → ηJ/ψ in B~±→ ηJ/ψK~± and e^+e^-→ ηJ/ψ processes

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