Precise Measurement Of The Cp Violation Parameter Sin2 Phi(1) In B-0 -> (C(C)Over-Bar)K-0 Decays

Ichiro Adachi,Hiroaki Aihara,David M. Asner,Vladimir M. Aulchenko,Tagir A Kh Aushev,T. Aziz,A. M. Bakich,Aurelio Bay,V. N. Bhardwaj,Bipul Bhuyan,M. Bischofberger, Alex E. Bondar,Andrzej Bozek,Marko Bračko,Thomas E. Browder,Pisin Chen,Byunggu Cheon,K. Chilikin,Ruslan N. Chistov,Kwangsoo Cho,Sookyung Choi,Yoonsuk Choi,J. P. Dalseno,Michael V. Danilov,Z. Dolëal,Zbyněk Drásal,Simon I. Eidelman,Denis A. Epifanov,James E. Fast,V. Gaur,N. I. Gabyshev,Alexei Yu Garmash,Y. M. Goh,Boštjan Golob,Junji Haba,Kaoru Y. Hara,Takanori Hara,Kiyoshi Hayasaka,Hisaki Hayashii,Takeo Higuchi,Y. Horii,Yoshimoto Hoshi,W. S. Hou,Y. B. Hsiung,Hyojung Hyun,Toru Iijima,Akimasa Ishikawa,Ryosuke Itoh,Masaya Iwabuchi,Yoshihito Iwasaki,Tomoko Iwashita,T. Danger Julius,P. Kapusta,Nobuhiko Katayama,Takeo Kawasaki,Hiromichi Kichimi,Ch M. Kíesling,Hongju Kim,Hyunok Kim,Jungbae Kim,Junghyun Kim,K. T. Kim,Youngjin Kim,Kay Kinoshita,Byeongrok Ko,S. Koblitz,P. Kodẙ,Samo Korpar,P. Krïan,Pavel P. Krokovny,Thomas Kuhr,R. Kumar,Tetsuro Kumita,A. S. Kuzmin,Youngjoon Kwon,Jens Sören Lange,Soohyung Lee,Jaeho Li,Yanxi Li,C. Y. Liu,Yenwei Liu,Zuqin Liu,D. Liventsev,Remi Louvot,Dmitry V. Matvienko,S. McOnie,Kenkichi Miyabayashi,Hitoshi Miyata,Yoshiyuki Miyazaki,Roman V. Mizuk,Gagan B. Mohanty,Tatsuo Mori,Norihito Muramatsu,Eiichi Nakano,Mikihiko Nakao,H. Nakazawa,S. Neubauer,Shohei Nishida,Kurtis Nishimura,Osamu Nitoh,Satoru Ogawa,Takayoshi Ohshima,Shoji Okuno,Stephen Lars Olsen, Y. Onuki,Hitoshi Ozaki,P. N. Pakhlov,Galina V. Pakhlova,H. K. Park,Kyoungsook Park,Todd K. Pedlar,Rok Pestotnik,M. Petrič,Leo E. Piilonen,Anton O. Poluektov,Markus Röhrken,Maria Róz̀anśka,Himansu Sahoo,Kunihiro Sakai,Yoshihide Sakai,Tomoyuki Sanuki,Yutaro Sato,Olivier Schneider,Christoph Schwanda,A. J. Schwartz,K. Senyo,V. E. Shebalin,Chengping Shen,Tatsunobu Shibata,J. G. Shiu,Boris A. Shwartz,Alexei L. Sibidanov,Frank Simon,Jaivir B. Singh,P. Smerkol,Y. S. Sohn,Anatoli A. Sokolov,Elena N. Solovieva,Samo Stanič,Marko Starič,Mizuki Sumihama,K. Sumisawa,Takayuki Sumiyoshi,S. Tanaka,Gocha T. Tatishvili,Yoshiki Teramoto,I. N. Tikhomirov,Karim Trabelsi,Toru Tsuboyama,Makoto Uchida,Sadaharu Uehara,T. Uglov,Yuuji Unno,Shoji Uno,Yutaka Ushiroda,Sven E. Vahsen,Gary S. Varner,K. E. Varvell,Anna Vinokurova,V. Vorobyev,Chunghsiang Wang,M. Z. Wang,Pengye Wang,Masakazu Watanabe,Yoshio Watanabe,Kerry M. Williams,Eunil Won,B. D. Yabsley,Hitoshi Yamamoto,Yousuke Yamashita,Masanori Yamauchi,Yuki Yusa,Ziping Zhang,Victor N. Zhilich, A. Zupanc,O. Zyukova

PHYSICAL REVIEW LETTERS（2012）

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摘要

We present a precise measurement of the CP violation parameter sin2 phi(1) and the direct CP violation parameter A(f) using the final data sample of 772 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson is reconstructed in a J / psi K-S(0), psi (2S)K-S(0), chi K-c1(S)0, or J / psi K-L(0) CP eigenstate and its flavor is identified from the decay products of the accompanying B meson. From the distribution of proper-time intervals between the two B decays, we obtain the following CP violation parameters: sin2 phi(1) = 0.667 +/- 0.023(stat) +/- 0.012(syst) and A(f) = 0.006 +/- 0.016(stat) +/- 0.012(syst).

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