Observation Of The Decay B-0 -> Eta ' K* (892)(0)

Satoshi Sato,Y Yusa,G B Mohanty,A Abdesselam,I Adachi,H Aihara,S Al Said,D M Asner,T Aushev,R Ayad, S Bahinipati,A M Bakich,Vikas Bansal,V Bhardwaj,B Bhuyan,G Bonvicini,A Bozek, M Bracko,T E Browder, D Cervenkov,P Chang,V Chekelian,A Chen,B G Cheon,K Chilikin,K Cho,V Chobanova,Y Choi,D Cinabro,J Dalseno,M Danilov,Z Dolezal, Z Drasal,A Drutskoy,S Eidelman,H Farhat, J Fast, T Ferber,O Frost,V K Gaur,S Ganguly,A Garmash,R Gillard, R Glattauer,Y M Goh,B Golob,O Grzymkowska, K Hayasaka, H Hayashii,X H He,Toshihiro Higuchi,W S Hou,M Huschle, T Iijima,K Inami,A Ishikawa,R Itoh, Y Iwasaki,I Jaegle,K K Joo,T Julius,E Kato,T Kawasaki,Dong Yi Kim,J B Kim,K T Kim,M J Kim,Y J Kim,K Kinoshita,J Klucar,B R Ko, P Kodys,S Korpar, P Krizan,P Krokovny,T Kuhr,T Kumita,Y J Kwon,Jing Li, Ye 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 K Nisar,Shogo Nishida,Shigeo Ogawa,S Okuno,P Pakhlov,G Pakhlova,Hongkyu Park,T K Pedlar, M Petric,L E Piilonen,M Ritter, A Rostomyan,Yoshihisa Sakai,S Sandilya,L Santelj,T Sanuki,Y Sato, V Savinov,O Schneider,G Schnell, C Schwanda,A J Schwartz,D Semmler,K Senyo,O Seon,M E Sevior,V Shebalin,C P Shen,T A Shibata,J G Shiu,B Shwartz,A Sibidanov,Ferenc Simon,Y S Sohn,A Sokolov, E Solovieva, M Staric, M Steder,J Stypula,M Sumihama,U Tamponi,G Tatishvili,Y Teramoto, F Thorne, K Trabelsi,M Uchida,S Uehara,T Uglov, Y Unno,S Uno,C Van Hulse,P Vanhoefer, G Varner,V Vorobyev, M N Wagner,C H Wang,M Z Wang,Pengfei Wang,X L Wang,M Watanabe, Y Watanabe,S Wehle,K M Williams,E Won, S Yashchenko, Y Yook,Z P Zhang,V Zhilich,V Zhulanov, A Zupanc

PHYSICAL REVIEW D（2014）

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摘要

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).

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