Search for the lepton flavor violating decay J/? ? e?
Küçük Resim Yok
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Science Press
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
We present a search for the lepton flavor violating decay J/psi -> e(+/-)mu(-/+) using 8.998 x 10(9)J/psi events collected with the BESIII detector at the BEPCII e(+)e(-) storage ring. No excess of signal above background is observed; we therefore set an upper limit on the branching fraction of B(J/psi -> e(+/-)mu(-/+)) < 4.5 x 10(-9) at the 90% confidence level. Improving the previous best result by a factor of more than 30, this measurement places the most stringent limit to date on lepton flavor violation in the heavy quarkonium sector.
Açıklama
Anahtar Kelimeler
Besiii, E(+)E(-) Experiments, Charmonium, Lepton Flavor Violating Decay
Kaynak
Science China-Physics Mechanics & Astronomy
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
66
Sayı
2
