Evidence for DirectCPViolation inB0→K+π−Decays
Evidence for DirectCPViolation inB0→K+π−Decays
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DOI：
10.1103/physrevlett.93.191802
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发表时间：
2004-08
影响因子：
8.6
通讯作者：
Y. Chao;P. Chang;K. Abe;N. Abe;I. Adachi;H. Aihara;K. Akai;M. Akatsu;M. Akemoto;Y. Asano;T. Aso;V. Aulchenko;T. Aushev;T. Aziz;S. Bahinipati;A. Bakich;Y. Ban;M. Barbero;A. Bay;I. Bedny;U. Bitenc;I. Bizjak;S. Blyth;A. Bondar;A. Bozek;M. Bračko;J. Brodzicka;T. Browder;M. Chang;A. Chen;K.F. Chen;W. Chen;B. Cheon;R. Chistov;S. Choi;Y. Choi;Y. Choi;A. Chuvikov;S. Cole;M. Danilov;M. Dash;L. Dong;R. Dowd;J. Dragic;A. Drutskoy;S. Eidelman;V. Eiges;Y. Enari;D. Epifanov;C. Everton;F. Fang;J. Flanagan;S. Fratina;H. Fujii;Y. Funakoshi;Kazuro Furukawa;N. Gabyshev;A. Garmash;T. Gershon;A. Go;G. Gokhroo;B. Golob;M. Grosse Perdekamp;H. Guler;R. Guo;J. Haba;C. Hagner;F. Handa;K. Hara;T. Hara;N. Hastings;K. Hasuko;K. Hayasaka;H. Hayashii;M. Hazumi;E. Heenan;I. Higuchi;T. Higuchi;L. Hinz;T. Hojo;T. Hokuue;Y. Hoshi;K. Hoshina;S. Hou;W. Hou;Y. Hsiung;H.‐C. Huang;T. Igaki;Y. Igarashi;T. Iijima;H. Ikeda;A. Imoto;K. Inami;A. Ishikawa;H. Ishino;K. Itoh;R. Itoh;M. Iwamoto;M. Iwasaki;Y. Iwasaki;R. Kagan;H. Kakuno;T. Kamitani;J. Kang;J. Kang;P. Kapusta;S. Kataoka;N. Katayama;H. Kawai;Y. Kawakami;N. Kawamura;T. Kawasaki;N. Kent;H. Khan;A. Kibayashi;H. Kichimi;M. Kikuchi;E. Kikutani;H. Kim;H. Kim;Hyunwoo Kim;J. Kim;S. Kim;T. Kim;K. Kinoshita;S. Kobayashi;H. Koiso;P. Koppenburg;S. Korpar;P. Križan;P. Krokovny;T. Kubo;R. Kulasiri;S. Kumar;C. Kuo;H. Kurashiro;E. Kurihara;A. Kusaka;A. Kuzmin;Y. Kwon;J. Lange;G. Leder;S. Lee;S. Lee;Y. Lee;T. Lesiak;J. Li;A. Limosani;S. Lin;D. Liventsev;J. Macnaughton;G. Majumder;F. Mandl;D. Marlow;M. Masuzawa;T. Matsuishi;H. Matsumoto;S. Matsumoto;T. Matsumoto;A. Matyja;S. Michizono;Y. Mikami;T. Mimashi;W. Mitaroff;K. Miyabayashi;Y. Miyabayashi;H. Miyake;H. Miyata;R. Mizuk;D. Mohapatra;G. Moloney;G. Moorhead;Takashi Mori;J. Mueller;A. Murakami;T. Nagamine;Y. Nagasaka;T. Nakadaira;I. Nakamura;T. Nakamura;E. Nakano;M. Nakao;H. Nakayama;H. Nakazawa;Z. Natkaniec;K. Neichi;S. Nishida;O. Nitoh;S. Noguchi;T. Nozaki;A. Ogawa;S. Ogawa;Y. Ogawa;K. Ohmi;Y. Ohnishi;T. Ohshima;N. Ohuchi;K. Oide;T. Okabe;S. Okuno;S. Olsen;Y. Onuki;W. Ostrowicz;H. Ozaki;P. Pakhlov;H. Palka;C. Park;H. Park;K. Park;N. Parslow;L. Peak;M. Pernicka;J. Perroud;Marco Peters;L. Piilonen;A. Poluektov;F. Ronga;N. Root;M. Różańska;H. Sagawa;M. Saigo;S. Saitoh;Y. Sakai;H. Sakamoto;H. Sakaue;T. Sarangi;M. Satapathy;N. Sato;T. Schietinger;O. Schneider;J. Schümann;C. Schwanda;A. Schwartz;T. Seki;S. Semenov;K. Senyo;Y. Settai;R. Seuster;M. Sevior;T. Shibata;H. Shibuya;T. Shidara;B. Shwartz;V. Sidorov;V. Siegle;J. Singh;A. Somov;N. Soni;R. Stamen;S. Stanič;M. Starič;R. Sugahara;A. Sugi;T. Sugimura;A. Sugiyama;K. Sumisawa;T. Sumiyoshi;S. Suzuki;S. Suzuki;S. Swain;O. Tajima;F. Takasaki;K. Tamai;N. Tamura;K. Tanabe;M. Tanaka;M. Tawada;G. Taylor;Y. Teramoto;X. Tian;S. Tokuda;S. Tovey;K. Trabelsi;T. Tsuboyama;T. Tsukamoto;K. Uchida;S. Uehara;T. Uglov;K. Ueno;Y. Unno;S. Uno;Y. Ushiroda;G. Varner;K. Varvell;S. Villa;C. Wang;C. Wang;J. Wang;M. Wang;M. Watanabe;Y. Watanabe;L. Widhalm;Q. Xie;B. Yabsley;A. Yamaguchi;H. Yamamoto;N. Yamamoto;S. Yamamoto;T. Yamanaka;Y. Yamashita;M. Yamauchi;H. Yang;P. Yeh;J. Ying;K. Yoshida;M. Yoshida;Y. Yuan;Y. Yusa;H. Yuta;S. Zang;C. Zhang;J. Zhang;L. Zhang;Z. Zhang;Y. Zheng;V. Zhilich;T. Ziegler;D. Žontar;D. Zürcher
中科院分区：
文献类型：
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作者：
Y. Chao;P. Chang;K. Abe;N. Abe;I. Adachi;H. Aihara;K. Akai;M. Akatsu;M. Akemoto;Y. Asano;T. Aso;V. Aulchenko;T. Aushev;T. Aziz;S. Bahinipati;A. Bakich;Y. Ban;M. Barbero;A. Bay;I. Bedny;U. Bitenc;I. Bizjak;S. Blyth;A. Bondar;A. Bozek;M. Bračko;J. Brodzicka;T. Browder;M. Chang;A. Chen;K.F. Chen;W. Chen;B. Cheon;R. Chistov;S. Choi;Y. Choi;Y. Choi;A. Chuvikov;S. Cole;M. Danilov;M. Dash;L. Dong;R. Dowd;J. Dragic;A. Drutskoy;S. Eidelman;V. Eiges;Y. Enari;D. Epifanov;C. Everton;F. Fang;J. Flanagan;S. Fratina;H. Fujii;Y. Funakoshi;Kazuro Furukawa;N. Gabyshev;A. Garmash;T. Gershon;A. Go;G. Gokhroo;B. Golob;M. Grosse Perdekamp;H. Guler;R. Guo;J. Haba;C. Hagner;F. Handa;K. Hara;T. Hara;N. Hastings;K. Hasuko;K. Hayasaka;H. Hayashii;M. Hazumi;E. Heenan;I. Higuchi;T. Higuchi;L. Hinz;T. Hojo;T. Hokuue;Y. Hoshi;K. Hoshina;S. Hou;W. Hou;Y. Hsiung;H.‐C. Huang;T. Igaki;Y. Igarashi;T. Iijima;H. Ikeda;A. Imoto;K. Inami;A. Ishikawa;H. Ishino;K. Itoh;R. Itoh;M. Iwamoto;M. Iwasaki;Y. Iwasaki;R. Kagan;H. Kakuno;T. Kamitani;J. Kang;J. Kang;P. Kapusta;S. Kataoka;N. Katayama;H. Kawai;Y. Kawakami;N. Kawamura;T. Kawasaki;N. Kent;H. Khan;A. Kibayashi;H. Kichimi;M. Kikuchi;E. Kikutani;H. Kim;H. Kim;Hyunwoo Kim;J. Kim;S. Kim;T. Kim;K. Kinoshita;S. Kobayashi;H. Koiso;P. Koppenburg;S. Korpar;P. Križan;P. Krokovny;T. Kubo;R. Kulasiri;S. Kumar;C. Kuo;H. Kurashiro;E. Kurihara;A. Kusaka;A. Kuzmin;Y. Kwon;J. Lange;G. Leder;S. Lee;S. Lee;Y. Lee;T. Lesiak;J. Li;A. Limosani;S. Lin;D. Liventsev;J. Macnaughton;G. Majumder;F. Mandl;D. Marlow;M. Masuzawa;T. Matsuishi;H. Matsumoto;S. Matsumoto;T. Matsumoto;A. Matyja;S. Michizono;Y. Mikami;T. Mimashi;W. Mitaroff;K. Miyabayashi;Y. Miyabayashi;H. Miyake;H. Miyata;R. Mizuk;D. Mohapatra;G. Moloney;G. Moorhead;Takashi Mori;J. Mueller;A. Murakami;T. Nagamine;Y. Nagasaka;T. Nakadaira;I. Nakamura;T. Nakamura;E. Nakano;M. Nakao;H. Nakayama;H. Nakazawa;Z. Natkaniec;K. Neichi;S. Nishida;O. Nitoh;S. Noguchi;T. Nozaki;A. Ogawa;S. Ogawa;Y. Ogawa;K. Ohmi;Y. Ohnishi;T. Ohshima;N. Ohuchi;K. Oide;T. Okabe;S. Okuno;S. Olsen;Y. Onuki;W. Ostrowicz;H. Ozaki;P. Pakhlov;H. Palka;C. Park;H. Park;K. Park;N. Parslow;L. Peak;M. Pernicka;J. Perroud;Marco Peters;L. Piilonen;A. Poluektov;F. Ronga;N. Root;M. Różańska;H. Sagawa;M. Saigo;S. Saitoh;Y. Sakai;H. Sakamoto;H. Sakaue;T. Sarangi;M. Satapathy;N. Sato;T. Schietinger;O. Schneider;J. Schümann;C. Schwanda;A. Schwartz;T. Seki;S. Semenov;K. Senyo;Y. Settai;R. Seuster;M. Sevior;T. Shibata;H. Shibuya;T. Shidara;B. Shwartz;V. Sidorov;V. Siegle;J. Singh;A. Somov;N. Soni;R. Stamen;S. Stanič;M. Starič;R. Sugahara;A. Sugi;T. Sugimura;A. Sugiyama;K. Sumisawa;T. Sumiyoshi;S. Suzuki;S. Suzuki;S. Swain;O. Tajima;F. Takasaki;K. Tamai;N. Tamura;K. Tanabe;M. Tanaka;M. Tawada;G. Taylor;Y. Teramoto;X. Tian;S. Tokuda;S. Tovey;K. Trabelsi;T. Tsuboyama;T. Tsukamoto;K. Uchida;S. Uehara;T. Uglov;K. Ueno;Y. Unno;S. Uno;Y. Ushiroda;G. Varner;K. Varvell;S. Villa;C. Wang;C. Wang;J. Wang;M. Wang;M. Watanabe;Y. Watanabe;L. Widhalm;Q. Xie;B. Yabsley;A. Yamaguchi;H. Yamamoto;N. Yamamoto;S. Yamamoto;T. Yamanaka;Y. Yamashita;M. Yamauchi;H. Yang;P. Yeh;J. Ying;K. Yoshida;M. Yoshida;Y. Yuan;Y. Yusa;H. Yuta;S. Zang;C. Zhang;J. Zhang;L. Zhang;Z. Zhang;Y. Zheng;V. Zhilich;T. Ziegler;D. Žontar;D. Zürcher
我们用KEKB e+e-对撞机Belle探测器收集的253/fb数据报告了在衰变B0 ->K+-pi-+中直接CP违反的证据。利用2.75亿个B - B_bar对，我们观测到一个包含2140+-53个事件的B ->K+-pi-+信号。测量的CP违反不对称性为Acp(K+-pi-+) = -0.101+-0.025 (stat)+-0.005 (syst)，包括系统学在内的显著性为3.9 sigma。我们还在衰变B+- ->K+-pi0和B+- ->pi+-pi0中寻找CP破坏。测量到的CP违反不对称为Acp(K+-pi0) = 0.04+-0.05(stat)+-0.02（syst）和Acp(pi+-pi0) = -0.02+-0.10(stat)+-0.01(syst)，对应区间为-0.05
We report evidence for direct CP violation in the decay B0 ->K+-pi-+ with 253/fb of data collected with the Belle detector at the KEKB e+e- collider. Using 275 million B B_bar pairs we observe a B ->K+-pi-+ signal with 2140+-53 events. The measured CP violating asymmetry is Acp(K+-pi-+) = -0.101+-0.025 (stat)+-0.005 (syst), corresponding to a significance of 3.9 sigma including systematics. We also search for CP violation in the decays B+- ->K+-pi0 and B+- ->pi+-pi0. The measured CP violating asymmetries are Acp(K+-pi0) = 0.04+-0.05(stat)+-0.02(syst) and Acp(pi+-pi0) = -0.02+-0.10(stat)+-0.01(syst), corresponding to the intervals -0.05