Observation of the decay $B^0 \to \eta' K^*(892)^0$

/ Authors

Belle Collaboration S. Sato, Y. Yusa, G. Mohanty, A. Abdesselam, I. Adachi, H. Aihara, S. Said, D. Asner, T. Aushev, R. Ayad

and 153 more authors

S. Bahinipati, A. Bakich, V. Bansal, V. Bhardwaj, B. Bhuyan, G. Bonvicini, A. Bozek, M. Bravcko, T. Browder, D. vCervenkov, P. Chang, V. Chekelian, A. Chen, B. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolevzal, Z. Dr'asal, A. Drutskoy, S. Eidelman, H. Farhat, J. Fast, T. Ferber, O. Frost, V. Gaur, S. Ganguly, A. Garmash, R. Gillard, R. Glattauer, Y. Goh, B. Golob, O. Grzymkowska, K. Hayasaka, H. Hayashii, X. He, T. Higuchi, W. Hou, M. Huschle, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, K. Joo, T. Julius, E. Kato, T. Kawasaki, D. Kim, J. Kim, Jae Hyun Kim, K. Kim, M. Kim, Y. Kim, K. Kinoshita, J. Klucar, B. Ko, P. Kodyvs, S. Korpar, P. Krivzan, P. Krokovny, T. Kuhr, T. Kumita, Y. Kwon, J. Li, Y. Li, J. Libby, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, E. Nedelkovska, N. Nisar, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, H. Park, T. Pedlar, M. Petrivc, L. Piilonen, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. Schwartz, D. Semmler, K. Senyo, O. Seon, M. Sevior, V. Shebalin, C. Shen, T. Shibata, J. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. Sohn, A. Sokolov, E. Solovieva, M. Starivc, M. Steder, J. Stypuła, M. Sumihama, U. Tamponi, G. Tatishvili, Y. Teramoto, F. Thorne, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, C. Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, M. Wagner, C. Wang, M. Wang, P. Wang, X. Wang, M. Watanabe, Y. Watanabe, S. Wehle, K. M. Williams, E. Won, S. Yashchenko, Y. Yook, Z. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

/ Abstract

We report a search for charmless hadronic decays of neutral B mesons to eta ' K* (892)(0). The results are based on a 711 fb(-1) data sample that contains 772 x 10(6) B (B) over bar pairs, collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. We observe the decay for the first time with a significance of 5.0 standard deviations and obtain its branching fraction B[B-0 -> eta ' K* (892)(0)] = [2.6 +/- 0.7(stat) +/- 0.2(syst)] x 10(-6). We also measure the CP-violating asymmetry as A(CP) [B-0 -> eta ' K* (892)(0)] = -0.22 +/- 0.29(stat) +/- 0.07(syst).

Journal: Physical Review D

DOI: 10.1103/PHYSREVD.90.072009