Belle CollaborationChobanova, V.Dalseno, J.Kiesling, C.Abdesselam, A.Adachi, I.Aihara, H.Asner, D. M.Aushev, T.Ayad, R.Babu, V.Badhrees, I.Bahinipati, S.Bakich, A. M.Barberio, E.Behera, P.Bhardwaj, V.Bhuyan, B.Biswal, J.Bobrov, A.Bozek, A.Bracko, M.Browder, T. E.Cervenkov, D.Chekelian, V.Chen, A.Cheon, B. G.Chistov, R.Cho, K.Choi, Y.Cinabro, D.Dash, N.Dolezal, Z.Drasal, Z.Drutskoy, A.Eidelman, S.Farhat, H.Fast, J. E.Ferber, T.Fulsom, B. G.Gaur, V.Gabyshev, N.Garmash, A.Gillard, R.Goh, Y. M.Goldenzweig, P.Golob, B.Grzymkowska, O.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Hou, W. -S.Iijima, T.Inami, K.Ishikawa, A.Iwasaki, Y.Jaegle, I.Jeon, H. B.Joffe, D.Joo, K. K.Julius, T.Kato, E.Katrenko, P.Kawasaki, T.Kim, D. Y.Kim, H. J.Kim, J. B.Kim, K. T.Kim, M. J.Kim, S. H.Kim, Y. J.Kinoshita, K.Kodys, P.Korpar, S.Krizan, P.Krokovny, P.Kuhr, T.Kumar, R.Kumita, T.Kuzmin, A.Kwon, Y. -J.Lee, I. S.Li, H.Li, L.Li, Y.Li Gioi, L.Libby, J.Liventsev, D.Masuda, M.Matvienko, D.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Mohanty, S.Moll, A.Moon, H. K.Mori, T.Mussa, R.Nakano, E.Nakao, M.Nanut, T.Natkaniec, Z.Nayak, M.Nedelkovska, E.Nisar, N. K.Nishida, S.Ogawa, S.Pakhlov, P.Pakhlova, G.Pal, B.Park, C. W.Park, H.Paul, S.Pedlar, T. K.Pestotnik, R.Petric, M.Piilonen, L. E.Pulvermacher, C.Rauch, J.Ribezl, E.Ritter, M.Ryu, S.Sahoo, H.Sakai, Y.Sandilya, S.Sanuki, T.Savinov, V.Schlueter, T.Schneider, O.Schnell, G.Schwanda, C.Schwartz, A. J.Seino, Y.Senyo, K.Seon, O.Sevior, M. E.Shebalin, V.Shibata, T. -A.Shiu, J. -G.Shwartz, B.Simon, F.Singh, J. B.Sohn, Y. -S.Sokolov, A.Solovieva, E.Staric, M.Stypula, J.Sumihama, M.Sumisawa, K.Sumiyoshi, T.Tamponi, U.Teramoto, Y.Trabelsi, K.Uchida, M.Uehara, S.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Van Hulse, C.Vanhoefer, P.Varner, G.Vinokurova, A.Vorobyev, V.Wagner, M. N.Wang, C. H.Wang, M. -Z.Wang, P.Wang, X. L.Watanabe, M.Watanabe, Y.Williams, K. M.Won, E.Yamaoka, J.Yashchenko, S.Ye, H.Yelton, J.Yuan, C. Z.Yusa, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zupanc, A.2016-04-012016-04-012016-04-01201610.1103/PhysRevD.93.031101https://infoscience.epfl.ch/handle/20.500.14299/125328WOS:000370802000001We report a measurement of the B-0 -> psi(2S)pi(0) branching fraction based on the full Upsilon(4S) data set of 772 x 10(6) B (B) over bar pairs collected by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain B(B-0 -> psi(2S)pi(0)) = (1.17 +/- 0.17(stat) +/- 0.08(syst)) x 10(-5). The result has a significance of 7.2 standard deviations and is the first observation of the decay B-0 -> psi(2S)pi(0).text::journal::journal article::research article