Measurement of the absolute branching fractions of Λc+ → Ληπ+ and Σ (1385)+η

The BELLE collaboration

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7 Citations (Scopus)

Abstract

We study the decays Λc+→Ληπ+ and Σ(1385)+η based on Λc+Λ̄c- pairs produced in e+e- collisions at a center-of-mass energy of s=4.6 GeV, corresponding to an integrated luminosity of 567 pb-1. The data sample was accumulated with the BESIII detector at the BEPCII collider. The branching fractions are measured to be B(Λc+→Ληπ+)=(1.84±0.21(stat)±0.15(syst))% and B(Λc+→Σ(1385)+η)=(0.91±0.18(stat)±0.09(syst))%, constituting the most precise measurements to date.

Original languageEnglish
Article number032010
Number of pages9
JournalPhysical Review D
Volume99
Issue number3
DOIs
Publication statusPublished - 19 Feb 2019

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