Study of the process e+e−→ϕη at center-of-mass energies between 2.00 and 3.08 GeV
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影响因子：5.296
DOI码：10.1103/PhysRevD.104.032007
所属单位：America
发表刊物：Phys. Rev. D
刊物所在地：美国
摘要：The process $e^{+}e^{−}\to\phi\eta$ is studied at 22 center-of-mass energy points ($\sqrt{s}$) between 2.00 and 3.08 GeV using 715~pb$^{−1}$ of data collected with the BESIII detector. The measured Born cross section of $e^{+}e^{−}\to\phi\eta$ is found to be consistent with {\textsl{BABAR}} measurements, but with improved precision. A resonant structure around 2.175~GeV is observed with a significance of 6.9$\sigma$ with mass $(2163.5\pm6.2\pm3.0)$~MeV/$c^{2}$ and width $(31.1_{-11 21}^{+61 1.1}~MeV, where the first uncertainties are statistical and the second are systematic.
论文类型：期刊论文
论文编号：Phys. Rev. D 104. 032007 (2021)
学科门类：理学
文献类型：J
卷号：104
期号：3
页面范围：032007
ISSN号：2470-0029
是否译文：否
发表时间：2021-08-20
收录刊物：SCI
发布期刊链接：https://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.032007