Observation of the decay B 0 → η ′ K * ( 892 ) 0 T Kumita , Y J Kwon , Jing Li , Yiping Li , J Libby , D Liventsev , U Tamponi , M Sumihama , J Stypula , M Steder , M Staric , E Solovieva , V Zhilich , Z P Zhang , Y Yook , S Yashchenko , E Won , K M Williams , S Wehle , A Sokolov , Y S Sohn , Francisco Marco Simon , A Sibidanov , B Shwartz , J G Shiu , T A Shibata , C P Shen , V Shebalin , M E Sevior , O Seon , K Senyo , D Semmler , A J Schwartz , C Schwanda , G Schnell , Y Watanabe , Masami Watanabe , X L Wang , Shusei 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 , Philip Chang , V Chekelian , A Chen , O Schneider , V Savinov , Yutaka Sato , Pan Wang , M Z Wang , C H Wang , M N Wagner , V Vorobyev , G Varner , P Vanhoefer , C Van Hulse , S Uno , Y Unno , T Uglov , S Uehara , T Sanuki , L Santelj , S Sandilya , Y Sakai , V Zhulanov , A Rostomyan , M Ritter , L E Piilonen , M Petric , T K Pedlar , B G Cheon , K Chilikin , K Cho , V Chobanova , Y Choi , A Zupanc , Hyoeun Park , D Cinabro , J Dalseno , G Pakhlova , P Pakhlov , S Okuno , M Danilov , Z Doležal , Z Drasal , A Drutskoy , S Eidelman , H Farhat , J Fast , T Ferber , O Frost , V Gaur , Sanmay 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 Uchida , K Trabelsi , F Thorne , Y Teramoto , G Tatishvili , Satoshi Ogawa , S Nishida , N K Nisar , E Nedelkovska , Z Natkaniec , T Nanut , M Nakao , E Nakano , A Moll , R Mizuk , H Miyata , K Miyabayashi , D Matvienko , M Huschle , Toshihiko Iijima , K Inami , A Ishikawa , R Itoh , Y Iwasaki , I Jaegle , K K Joo , T Julius , E Kato , Tsutomu Kawasaki , Dong Yeon Kim , Jae Bum Kim , K T Kim , M J Kim , Yu Jin Kim , K Kinoshita , J Klucar , B R Ko , P Kodys , S Korpar , P Križan , P Krokovny , T Kuhr Physical Review D（2014）
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).
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Key words
decay<mmlmath xmlnsmml=http//wwww3org/1998/math/mathml
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