Observation of large CP violation and evidence for direct CP violation in B0 → π+ π- decays
Observation of large CP violation and evidence for direct CP violation in B0 → π+ π- decays
复制标题
B0 → π+ π- 衰变中大量 CP 破坏的观察和直接 CP 破坏的证据
DOI：
10.1103/physrevlett.93.021601
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
D. Zürcher
中科院分区：
文献类型：
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作者：
K. Abe;K. Abe;N. Abe;T. Abe;I. Adachi;H. Aihara;K. Akai;M. Akatsu;M. Akemoto;Y. Asano;T. Aso;V. Aulchenko;T. Aushev;A. Bakich;Y. Ban;S. Banerjee;A. Bay;I. Bedny;I. Bizjak;A. Bondar;A. Bozek;M. Bračko;T. Browder;Y. Chao;K. F. Chen;B. Cheon;R. Chistov;S. Choi;Y. Choi;A. Chuvikov;S. Cole;M. Danilov;J. Dragic;A. Drutskoy;S. Eidelman;V. Eiges;Y. Enari;D. Epifanov;J. Flanagan;Kazuro Furukawa;N. Gabyshev;A. Garmash;T. Gershon;B. Golob;J. Haba;K. Hara;N. Hastings;H. Hayashii;M. Hazumi;L. Hinz;T. Hokuue;Y. Hoshi;W. Hou;Y. Hsiung;H. Huang;T. Iijima;H. Ikeda;K. Inami;A. Ishikawa;H. Ishino;R. Itoh;H. Iwasaki;M. Iwasaki;Y. Iwasaki;H. Kakuno;T. Kamitani;J. Kang;J. Kang;P. Kapusta;S. Kataoka;N. Katayama;H. Kawai;T. Kawasaki;A. Kibayashi;H. Kichimi;E. Kikutani;H. Kim;J. Kim;S. Kim;K. Kinoshita;P. Koppenburg;S. Korpar;P. Križan;P. Krokovny;S. Kumar;A. Kuzmin;Y. Kwon;J. Lange;G. Leder;S. Lee;Y. J. Lee;T. Lesiak;J. Li;A. Limosani;S. Lin;D. Liventsev;J. Macnaughton;F. Mandl;D. Marlow;H. Matsumoto;T. Matsumoto;A. Matyja;S. Michizono;T. Mimashi;W. Mitaroff;K. Miyabayashi;H. Miyake;H. Miyata;D. Mohapatra;G. Moloney;A. Murakami;T. Nagamine;Y. Nagasaka;T. Nakadaira;T. Nakamura;E. Nakano;M. Nakao;H. Nakazawa;Z. Natkaniec;K. Neichi;S. Nishida;O. Nitoh;S. Noguchi;T. Nozaki;S. Ogawa;Y. Ogawa;K. Ohmi;T. Ohshima;N. Ohuchi;K. Oide;T. Okabe;S. Okuno;S. Olsen;W. Ostrowicz;H. Ozaki;P. Pakhlov;H. Palka;C. Park;H. Park;N. Parslow;L. Piilonen;N. Root;M. Różańska;H. Sagawa;Y. Sakai;O. Schneider;J. Schümann;C. Schwanda;A. Schwartz;S. Semenov;K. Senyo;H. Shibuya;T. Shidara;B. Shwartz;V. Sidorov;J. Singh;N. Soni;R. Stamen;S. Stanič;M. Starič;R. Sugahara;K. Sumisawa;T. Sumiyoshi;K. Suzuki;S. Suzuki;O. Tajima;F. Takasaki;K. Tamai;N. Tamura;M. Tanaka;M. Tawada;Y. Teramoto;T. Tomura;T. Tsuboyama;T. Tsukamoto;S. Uehara;T. Uglov;K. Ueno;Y. Unno;S. Uno;G. Varner;K. Varvell;C. Wang;C. Wang;M. Wang;Y. Watanabe;B. Yabsley;Y. Yamada;A. Yamaguchi;Y. Yamashita;M. Yamauchi;H. Yanai;H. Yang;J. Ying;M. Yokoyama;M. Yoshida;Y. Yusa;C. Zhang;Z. Zhang;T. Ziegler;D. Žontar;D. Zürcher
研究了Bo → π +π-衰变的CP破坏参数。通过重构B o→π+π- CP本征态，确定了伴随B介子的味.据观察，预期的灵敏度使用比率LR进行了优化。研究表明，存在直接CP违背，显著性等于或大于3.2σ。
The CP violation parameters in Bo → π +π- decay were investigated. The flavor of the accompanying B meson was identified by reconstructing B o→π+π- CP eigenstate. It was observed that the expected sensitivity was optimized using the ratio LR. The study showed that there was a direct CP violation with a significance at or greater than 3.2σ.