Measurements of B decays to two kaons
Abe, K.;
Adachi, I.;
Aihara, H.;
Asano, Y.;
Aulchenko, V.;
Aushev, T.;
Bakich, A.M.;
Balagura, V.;
Banerjee, S.;
Barberio, E.
Barbero, M.;
Bay, A.;
Bedny, I.;
Bitenc, U.;
Bizjak, I.;
Blyth, S.;
Bondar, A.;
Bozek, A.;
Bračko, M.;
Brodzicka, J.;
Browder, T.E.;
Chang, P.;
Chao, Y.;
Chen, A.;
Chen, K.-F.;
Chen, W.T.;
Cheon, B.G.;
Chistov, R.;
Choi, S.-K.;
Choi, Y.;
Chuvikov, A.;
Cole, S.;
Dalseno, J.;
Danilov, M.;
Dash, M.;
Dong, L.Y.;
Dragic, J.;
Drutskoy, A.;
Eidelman, S.;
Enari, Y.;
Fratina, S.;
Gabyshev, N.;
Gershon, T.;
Go, A.;
Gokhroo, G.;
Golob, B.;
Goriek, A.;
Haba, J.;
Hara, T.;
Hastings, N.C.;
Hayasaka, K.;
Hayashii, H.;
Hazumi, M.;
Hinz, L.;
Hokuue, T.;
Hoshi, Y.;
Hou, S.;
Hou, W.-S.;
Hsiung, Y.B.;
Iijima, T.;
Ikado, K.;
Imoto, A.;
Ishikawa, A.;
Ishino, H.;
Itoh, R.;
Iwasaki, M.;
Iwasaki, Y.;
Kang, J.H.;
Kang, J.S.;
Kataoka, S.U.;
Katayama, N.;
Kawai, H.;
Kawasaki, T.;
Khan, H.R.;
Kichimi, H.;
Kim, J.H.;
Kim, S.K.;
Kim, S.M.;
Kinoshita, K.;
Korpar, S.;
Kriaan, P.;
Krokovny, P.;
Kuo, C.C.;
Kuzmin, A.;
Kwon, Y.-J.;
Lee, S.E.;
Lesiak, T.;
Li, J.;
Lin, S.-W.;
Liventsev, D.;
Majumder, G.;
Mandl, F.;
Matsumoto, T.;
Matyja, A.;
Mitaroff, W.;
Miyake, H.;
Miyata, H.;
Miyazaki, Y.;
Mizuk, R.
We report measurements of B meson decays to two kaons using 253fb-1 of data collected with the Belle detector at the KEKB energy-asymmetric e+e- collider. We find evidence for signals in B+→K̄0K+ and B0→K0K̄0 with significances of 3.0σ and 3.5σ, respectively. (Charge-conjugate modes are included.) The corresponding branching fractions are measured to be B(B+→K̄0K+)=(1.0±0.4±0.1)×10-6 and B(B0→K0K̄0)=(0.8±0.3±0.1)×10-6. These decay modes are examples of hadronic b→d transitions. No signal is observed in the decay B0→K+K-, and we set an upper limit of 3.7×10-7 at 90% confidence level. © 2005 The American Physical Society.
Reference
Record created on 2010-11-05, modified on 2017-05-12
