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Miyazaki, Y; Hayasaka, K; Adachi, I; Aihara, H; Asner, D M; Aulchenko, V; Aushev, T; Bakich, A M; Bay, A; Bhardwaj, V; Bhuyan, B; Bischofberger, M; Bozek, A; Bracko, M; Browder, TE; Chang, M-C; Chen, A; Chen, P; Cheon, B G; Chistov, R; Cho, K; Choi, Y; Dalseno, J; DoleA34al, Z; Drutskoy, A; Eidelman, S; Epifanov, D; Fast, JE; Gaur, V; Gabyshev, N; Garmash, A; Goh, Y M; Haba, J; Hayashii, H; Horii, Y; Hoshi, Y; Hou, W-S; Hyun, HJ; Iijima, T; Inami, K; Ishikawa, A; Itoh, R; Iwabuchi, M; Iwasaki, Y; Julius, T; Kang, J H; Kiesling, C; Kim, HJ; Kim, HO; Kim, K T; et. al
Physics letters. B, 02/2013, Letnik: 719, Številka: 4a5Journal Article
We search for lepton-flavor and lepton-number-violating I decays into a lepton (a= electron or muon) and two charged mesons (h , h a2 = pi +/- or K +/-) using 854 fb - 1 of data collected with the Belle detector at the KEKB asymmetric-energy e + e - collider. We obtain 90% confidence level upper limits on the I a a h h a2 branching fractions in the range (2.0 a 8.4) X 10 - 8 . These results improve upon our previously published upper limits by factors of about 1.8 on average.
