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.


Creative Commons License

Ablikim M., Achasov M., Ahmed S., Albrecht M., Alekseev M., Amoroso A., ...Daha Fazla

Physical Review D, cilt.97, sa.9, 2018 (SCI-Expanded, Scopus) identifier identifier

Özet

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.