Search for ψ（4S）→ηJ/ψ in B±→ηJ/ψK± and e＋e-→η/Jψ Processes

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±→...

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Bibliographic Details
Published in:中国物理C：英文版 2016 (1), p.23-27
Main Author: 高旭阳 王小龙 沈成平
Format: Article
Language:English
Subjects:
MeV
分支比
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理论预测
置信水平
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Summary: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.
ISSN:1674-1137
0254-3052