Bhardwaj, V.Kumar, R.Singh, J.B.Adachi, I.Aihara, H.Arinstein, K.Aushev, T.Aziz, T.Bahinipati, S.Bakich, A.M.Balagura, V.Barberio, E.Bay, A.Belous, K.Bitenc, U.Bondar, A.Bozek, A.Bračko, M.Brodzicka, J.Browder, T.E.Chang, M.-C.Chang, P.Chen, A.Cheon, B.G.Chistov, R.Cho, I.-S.Choi, S.-K.Choi, Y.Dalseno, J.Dash, M.Drutskoy, A.Eidelman, S.Goldenzweig, P.Golob, B.Ha, H.Hara, T.Hayasaka, K.Hayashii, H.Hazumi, M.Hoshi, Y.Hou, W.-S.Hsiung, Y.B.Hyun, H.J.Iijima, T.Inami, K.Ishikawa, A.Ishino, H.Itoh, R.Iwasaki, M.Iwasaki, Y.Joshi, N.J.Kah, D.H.Kang, J.H.Katayama, N.Kawai, H.Kawasaki, T.Kichimi, H.Kim, H.O.Kim, S.K.Kim, Y.I.Kim, Y.J.Kinoshita, K.Korpar, S.Križan, P.Krokovny, P.Kuzmin, A.Kwon, Y.-J.Kyeong, S.-H.Lange, J.S.Lee, J.S.Lin, S.-W.Liu, C.Liu, Y.Liventsev, D.Mandl, F.Matyja, A.McOnie, S.Medvedeva, T.Miyabayashi, K.Miyata, H.Miyazaki, Y.Mizuk, R.Moloney, G.R.Nagasaka, Y.Nakao, M.Natkaniec, Z.Nishida, S.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S.L.Ozaki, H.Pakhlov, P.Pakhlova, G.Park, C.W.Park, H.Park, H.K.Peak, L.S.Pestotnik, R.Piilonen, L.E.Sahoo, H.Sakai, Y.Schneider, O.Schümann, J.Schwanda, C.Schwartz, A.J.Senyo, K.Sevior, M.E.Shapkin, M.Shen, C.P.Shiu, J.-G.Shwartz, B.Somov, A.Stanič, S.Starič, M.Sumiyoshi, T.Suzuki, S.Tamura, N.Tanaka, M.Taylor, G.N.Teramoto, Y.Trabelsi, K.Uehara, S.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Varner, G.Varvell, K.E.Vervink, K.Wang, C.C.Wang, C.H.Wang, M.-Z.Wang, P.Wang, X.L.Watanabe, Y.Won, E.Yamashita, Y.Yamauchi, M.Zhang, C.C.Zhulanov, V.Zivko, T.Zupanc, A.Zyukova, O.2010-11-052010-11-052010-11-05200810.1103/PhysRevD.78.0511042-s2.0-53349099566https://infoscience.epfl.ch/handle/20.500.14299/56851WOS:000259692600005We report the first observation of B±→ψ(2S)π±, a Cabibbo- and color-suppressed decay. This analysis is based on 657×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. The measured branching fraction is (2.44±0.22±0.20)×10-5 and the charge asymmetry is A=0.022±0.085±0.016. The ratio of the branching fractions B(B±→ψ(2S)π±)/B(B±→ψ(2S)K±)=(3. 99±0.36±0.17)% is also determined. © 2008 The American Physical Society.text::journal::journal article::research article