Impact Factor:5.296

DOI number:10.1103/PhysRevD.104.032007

Affiliation of Author(s):America

Journal:Phys. Rev. D

Place of Publication:United States

Abstract: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.

Indexed by:Journal paper

Document Code:Phys. Rev. D 104. 032007 (2021)

Discipline:Natural Science

Document Type:J

Volume:104

Issue:3

Page Number:032007

ISSN No.:2470-0029

Translation or Not:no

Date of Publication:2021-08-20

Included Journals:SCI

Links to published journals:https://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.032007