Search for the rare decay of ψ (3686) → Λc+ p e+e-+c.c. at BESIII SEARCH for the RARE DECAY of ... M. ABLIKIM et al.

BESIII Collaboration

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Abstract

Based on a data sample of (448.1±2.9)×106ψ(3686) decays collected with the BESIII experiment, a search for the flavor changing neutral current transition ψ(3686)→Λc+pe+e-+c.c. is performed for the first time. No signal candidates are observed and the upper limit on the branching fraction of ψ(3686)→Λc+pe+e- is determined to be 1.7×10-6 at the 90% confidence level. The result is consistent with expectations from the standard model, and no evidence for new physics is found.

Lingua originaleInglese
Numero di articolo091102
RivistaPhysical Review D
Volume97
Numero di pubblicazione9
DOI
Stato di pubblicazionePubblicato - 1 mag 2018
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