Search for the lepton flavor violation process J/psi -> e mu at BESIII

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Risultato della ricerca: Contributo su rivistaArticolo in rivista

Abstract

We search for the lepton-flavor-violating decay of the J/ψ into an electron and a muon using (225.3±2.8)×106 J/ψ events collected with the BESIII detector at the BEPCII. Four candidate events are found in the signal region, consistent with background expectations. An upper limit on the branching fraction of B(J/ψ→eμ)<1.6×10-7 (90% C.L.) is obtained.

Lingua originaleInglese
RivistaPHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Volume87
Numero di pubblicazione11
DOI
Stato di pubblicazionePubblicato - 1 gen 2013

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