Measurements of the branching fractions of ηc→K+K−π0, K0SK±π∓, 2(π+π−π0), and p¯p

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Abstract

Using data samples collected with the BESIII detector at center-of-mass energies √s=4.23, 4.26, 4.36, and 4.42 GeV, we measure the branching fractions of ηc→K+K−π0, K0SK±π∓, 2(π+π−π0), and p¯p, via the process e+e−→π+π−hc, hc→γηc. The corresponding results are (1.15±0.12±0.10)%, (2.60±0.21±0.20)%, (15.2±1.8±1.7)%, and (0.120±0.026±0.015)%, respectively. Here the first uncertainties are statistical, and the second ones systematic. Additionally, the charged track multiplicity of ηc decays is measured for the first time

Original languageEnglish
Article number012003
Number of pages12
JournalPhysical Review D
Volume100
Issue number1
DOIs
Publication statusPublished - 22 Jul 2019

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