Search for lepton-flavor-violating τ → ℓ V0 decays at Belle
Nishio, Y.;
Inami, K.;
Ohshima, T.;
Adachi, I.;
Aihara, H.;
Arinstein, K.;
Aulchenko, V.;
Aushev, T.;
Aziz, T.;
Bakich, A.M.
Balagura, V.;
Barberio, E.;
Bedny, I.;
Belous, K.;
Bitenc, U.;
Blyth, S.;
Bondar, A.;
Bračko, M.;
Browder, T.E.;
Chen, A.;
Chen, W.T.;
Cheon, B.G.;
Cho, I.-S.;
Choi, Y.;
Dalseno, J.;
Danilov, M.;
Dash, M.;
Drutskoy, A.;
Eidelman, S.;
Epifanov, D.;
Gabyshev, N.;
Golob, B.;
Ha, H.;
Haba, J.;
Hara, K.;
Hayasaka, K.;
Hayashii, H.;
Hazumi, M.;
Horii, Y.;
Hoshi, Y.;
Hou, W.-S.;
Hsiung, Y.B.;
Iijima, T.;
Ishikawa, A.;
Itoh, R.;
Iwasaki, M.;
Iwasaki, Y.;
Joshi, N.J.;
Kah, D.H.;
Kaji, H.;
Kang, J.H.;
Katayama, N.;
Kawai, H.;
Kawasaki, T.;
Kichimi, H.;
Kim, Y.J.;
Korpar, S.;
Kozakai, Y.;
Križan, P.;
Krokovny, P.;
Kumar, R.;
Kuo, C.C.;
Kuroki, Y.;
Kuzmin, A.;
Kwon, Y.-J.;
Lee, J.S.;
Lee, M.J.;
Lee, S.E.;
Lesiak, T.;
Limosani, A.;
Liu, Y.;
Liventsev, D.;
Mandl, F.;
McOnie, S.;
Miyake, H.;
Miyata, H.;
Miyazaki, Y.;
Mizuk, R.;
Moloney, G.R.;
Mori, T.;
Nakano, E.;
Nakao, M.;
Nakazawa, H.;
Nishida, S.;
Nitoh, O.;
Ogawa, S.;
Okuno, S.;
Ozaki, H.;
Pakhlov, P.;
Pakhlova, G.;
Park, C.W.;
Park, H.;
Pestotnik, R.;
Piilonen, L.E.;
Poluektov, A.;
Sakai, Y.;
Schneider, O.;
Senyo, K.;
Sevior, M.E.;
Shapkin, M.;
Shebalin, V.;
Shibuya, H.;
Shiu, J.-G.;
Shwartz, B.;
Singh, J.B.;
Sokolov, A.;
Somov, A.;
Stanič, S.;
Starič, M.;
Sumiyoshi, T.;
Takasaki, F.;
Tanaka, M.;
Taylor, G.N.;
Teramoto, Y.;
Tikhomirov, I.;
Uehara, S.;
Ueno, K.;
Uglov, T.;
Unno, Y.;
Uno, S.;
Usov, Y.;
Varner, G.;
Villa, S.;
Vinokurova, A.;
Wang, C.H.;
Wang, P.;
Wang, X.L.;
Watanabe, Y.;
Won, E.;
Yamashita, Y.;
Zhang, Z.P.;
Zhilich, V.;
Zhulanov, V.;
Zupanc, A.;
Zyukova, O.
We have searched for neutrinoless τ lepton decays into ℓ and V0, where ℓ stands for an electron or muon, and V0 for a vector meson (φ{symbol}, ω, K* 0, over(K, ̄)* 0 or ρ0), using 543 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. No excess of signal events over the expected background has been observed, and we set upper limits on the branching fractions in the range (5.9 - 18) × 10-8 at the 90% confidence level. These upper limits are significantly more restrictive than our previous results for the ℓφ{symbol}, ℓ K* 0, ℓ over(K, ̄)* 0 and ℓ ρ0 modes. © 2008 Elsevier B.V.
Reference
Record created on 2010-11-05, modified on 2017-05-12
