Study of e+e−→ γϕJ/ψ from s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}
Study of e+e−→ γϕJ/ψ from s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}
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DOI：
10.1007/jhep01(2023)132
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发表时间：
2023-01
影响因子：
5.4
通讯作者：
M. Ablikim;M. Achasov;P. Adlarson;M. Albrecht;R. Aliberti;A. Amoroso;M. An;Q. An;Y. Bai
中科院分区：
文献类型：
--
作者：
M. Ablikim;M. Achasov;P. Adlarson;M. Albrecht;R. Aliberti;A. Amoroso;M. An;Q. An;Y. Bai
使用积分光度为6的数据样本。利用BESIII探测器在BEPCII存储环上收集的4 fb−1，研究了e+ e−→γ j /ψ的过程。观察到e+ e−→ϕχ c1， c2, χ c1， c2→γJ/ψ的过程，显著性大于10σ。e+ e−→ϕχ c1， c2的依赖截面在4.600和4.951 GeV之间测量，并且在ϕχ c2过程中首次发现了共振结构的证据。我们也通过γϕJ/ψ终态搜索了e+ e−→γX（4140）、γX（4274）和γX（4500）的过程，但没有发现明显的结构。报告了在90%置信水平下这些工艺的生产截面乘以分支分数的上限。
Using data samples with an integrated luminosity of 6. 4 fb− 1 collected by the BESIII detector operating at the BEPCII storage ring, the process of e+ e−→ γϕJ/ψ is studied. The processes of e+ e−→ ϕχ c1, c2, χ c1, c2→ γJ/ψ are observed with a significance of more than 10σ. The-dependent cross section of e+ e−→ ϕχ c1, c2 is measured between 4.600 and 4.951 GeV, and evidence of a resonance structure is found for the first time in the ϕχ c2 process. We also search for the processes of e+ e−→ γX (4140), γX (4274) and γX (4500) via the γϕJ/ψ final state, but no obvious structures are found. The upper limits on the production cross section times the branching fraction for these processes at the 90% confidence level are reported.