Amplitude analysis and branching-fraction measurement of Ds+ → KS0 K-π+π+

BESIII Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

Using 6.32 fb-1 of e+e- collision data collected by the BESIII detector at the center-of-mass energies between 4.178 and 4.226 GeV, an amplitude analysis of the Ds+→KS0K-π+π+ decays is performed for the first time to determine the intermediate-resonant contributions. The dominant component is the Ds+→K∗(892)+K̄∗(892)0 decay with a fraction of (40.6±2.9stat±4.9sys)%. Our results of the amplitude analysis are used to obtain a more precise measurement of the branching fraction of the Ds+→KS0K-π+π+ decay, which is determined to be (1.46±0.05stat±0.05sys)%.

Original languageEnglish
Article number092006
JournalPhysical Review D
Volume103
Issue number9
DOIs
Publication statusPublished - 24 May 2021

OECD FOS+WOS

  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY

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