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

We study the decays Λc+→Ληπ+ and Σ(1385)+η based on Λc+Λ¯c− 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 m...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. D 2019-02, Vol.99 (3), p.1
Main Author: Ablikim, M
Format: Article
Language:English
Subjects:
Luminosity
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We study the decays Λc+→Ληπ+ and Σ(1385)+η based on Λc+Λ¯c− 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.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.99.032010