Search for the rare decay of Psi(3686) -> Lambda+pe(+)e(-) +c.c. at BESIII

Çetin, Serkant Ali2020-11-032020-11-032018-05-042470-00292470-0010https://hdl.handle.net/11411/2409https://doi.org/10.1103/PhysRevD.97.091102Based on a data sample of (448.1 +/- 2.9) x 10(6)Psi(3686) decays collected with the BESIII experiment, a search for the flavor changing neutral current transition Psi(3686) -> Lambda(+)(c) pe(+) e(-) + c.c. is performed for the first time. No signal candidates are observed and the upper limit on the branching fraction of Psi(3686) -> Lambda(+)(c) pe(+) e(-) is determined to be 1.7 x 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.eninfo:eu-repo/semantics/openAccessEVENT GENERATORSWEAK DECAYSSearch for the rare decay of Psi(3686) -> Lambda+pe(+)e(-) +c.c. at BESIIIArticle2-s2.0-8504921166710.1103/PhysRevD.97.091102Q1WOS:000432963300002