%0 Journal Article
%T Search for Lepton Flavor Violation in Upsilon(3S) -> e(+/-)mu(-/+)
%A BABAR Collaboration (Lees, J. P. et al
%A Martinez-Vidal, F.
%A Oyanguren, A.
%J Physical Review Letters
%D 2022
%V 128
%N 9
%I Amer Physical Soc
%@ 0031-9007
%G English
%F BABARCollaborationLees_etal2022
%O WOS:000766760100005
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5164), last updated on Tue, 22 Mar 2022 19:48:13 +0000
%X We report on the first search for electron-muon lepton flavor violation (LFV) in the decay of a b quark and b antiquark bound state. We look for the LFV decay Upsilon(3S) -> e(+/-) mu(-/+) in a sample of 118 million gamma(3S) mesons from 27 fb(-1) of data collected with the BABAR detector at the SLAC PEP-II e(+) e(-) collider operating with a 10.36 GeV center-of-mass energy. No evidence for a signal is found, and we set a limit on the branching fraction B[Upsilon(3S) -> e(+/-) mu(-/+)] < 3.6 x 10(-7) at 90% C. L. This result can be interpreted as a limit Lambda(NP)/g(NP)(2) > 80 TeV on the energy scale Lambda(NT) divided by the coupling-squared g(NP)(2) of relevant new physics (NP).
%R 10.1103/PhysRevLett.128.091804
%U https://arxiv.org/abs/2109.03364
%U https://doi.org/10.1103/PhysRevLett.128.091804
%P 091804-7pp