Observation of the decay ψ(3686) → Σ −Σ ¯ + and measurement of its angular distribution
Journal
Journal of High Energy Physics
Journal Volume
2022
Journal Issue
12
Start Page
16
ISSN
1029-8479
Date Issued
2022-12-05
Author(s)
Abstract
Using (448.1 ± 2.9) × 106ψ(3686) events collected with the BESIII detector at the BEPCII collider, the decay ψ(3686) →Σ −Σ ¯ + is observed for the first time with a branching fraction of (2.82 ± 0.04stat.± 0.08syst.) × 10−4, and the angular parameter αΣ− is measured to be 0.96 ± 0.09stat.± 0.03syst.. [Figure not available: see fulltext.]
Subjects
Branching fraction
e+-e− Experiments
Particle and Resonance Production
Spectroscopy
SDGs
Publisher
Springer Science and Business Media LLC
Type
journal article