Search for lepton flavor violating decays into and

Authors :: Miyazaki, Y.
Adachi, I.
Aihara, H.
Arinstein, K.
Aulchenko, V.
Bakich, A.M.
Balagura, V.
Barberio, E.
Bay, A.
Belous, K.
Bischofberger, M.
Bozek, A.
Bračko, M.
Browder, T.E.
Chang, M.-C.
Chang, P.
Chen, A.
Chen, K.-F.
Chen, P.
Cheon, B.G.
Source :: Physics Letters B. Aug2010, Vol. 692 Issue 1, p4-9. 6p.
Publication Year :: 2010
Abstract: Abstract: We have searched for the lepton-flavor-violating decays and (), using a data sample of 671 fb−1 collected with the Belle detector at the KEKB asymmetric-energy collider. No evidence for a signal was found in any of the decay modes, and we set the following upper limits for the branching fractions: , , and at the 90% confidence level. [ABSTRACT FROM AUTHOR]