Cross section measurement of e+e- →η′J /ψ from s =4.178 to 4.600 GeV

BESIII Collaboration

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2 Citations (Scopus)

Abstract

The cross section of the process e+e-→η′J/ψ is measured at center-of-mass (c.m.) energies from s=4.178 to 4.600 GeV using data samples corresponding to a total integrated luminosity of 11 fb-1 collected with the BESIII detector operating at the BEPCII storage ring. The dependence of the cross section on s shows an enhancement around 4.2 GeV. While the shape of the cross section cannot be fully explained with a single ψ(4160) or ψ(4260) state, a coherent sum of the two states does provide a reasonable description of the data.

Original languageEnglish
Article number012008
JournalPhysical Review D
Volume101
Issue number1
DOIs
Publication statusPublished - 21 Jan 2020

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