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.2010-11-052010-11-052010-11-05200510.1103/PhysRevLett.95.2318022-s2.0-28844462732https://infoscience.epfl.ch/handle/20.500.14299/56938WOS:000233724000021We 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.text::journal::journal article::research article