Measurement of the CP asymmetry in B-->Xs gamma.

Measurement of the CP asymmetry in B-->Xs gamma.
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DOI：
10.1103/physrevlett.93.031803
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发表时间：
2003-08
期刊：
Physical review letters
影响因子：
8.6
通讯作者：
S. Nishida;K. Abe;T. Abe;H. Aihara;Y. Asano;T. Aushev;S. Bahinipati;A. Bakich;Y. Ban;E. Banas;A. Bay;U. Bitenc;I. Bizjak;S. Blyth;A. Bondar;A. Bozek;M. Bračko;J. Brodzicka;T. Browder;M. Chang;P. Chang;K.F. Chen;B. Cheon;R. Chistov;S. Choi;Y. Choi;A. Chuvikov;S. Cole;M. Danilov;M. Dash;L. Dong;J. Dragic;S. Eidelman;V. Eiges;Y. Enari;D. Epifanov;F. Fang;S. Fratina;A. Garmash;T. Gershon;G. Gokhroo;B. Golob;J. Haba;T. Hara;N. Hastings;H. Hayashii;M. Hazumi;T. Higuchi;L. Hinz;Y. Hoshi;W. Hou;Y. Hsiung;T. Iijima;K. Inami;A. Ishikawa;H. Ishino;R. Itoh;M. Iwasaki;Y. Iwasaki;J. Kang;J. Kang;P. Kapusta;S. Kataoka;N. Katayama;T. Kawasaki;H. Kichimi;H. Kim;S. Kim;T. Kim;P. Koppenburg;S. Korpar;P. Križan;P. Krokovny;A. Kuzmin;Y. Kwon;J. Lange;G. Leder;S. Lee;S. Lee;J. Li;S. Lin;J. Macnaughton;G. Majumder;F. Mandl;T. Matsumoto;A. Matyja;W. Mitaroff;H. Miyake;R. Mizuk;D. Mohapatra;G. Moloney;A. Murakami;T. Nagamine;Y. Nagasaka;E. Nakano;M. Nakao;H. Nakazawa;Z. Natkaniec;O. Nitoh;T. Nozaki;S. Ogawa;T. Ohshima;T. Okabe;S. Okuno;S. Olsen;H. Ozaki;P. Pakhlov;H. Palka;C. Park;H. Park;Marco Peters;L. Piilonen;F. Ronga;M. Różańska;Y. Sakai;O. Schneider;J. Schümann;C. Schwanda;S. Semenov;R. Seuster;M. Sevior;H. Shibuya;B. Shwartz;A. Somov;N. Soni;R. Stamen;S. Stanič;M. Starič;A. Sugiyama;T. Sumiyoshi;S. Suzuki;O. Tajima;F. Takasaki;K. Tamai;M. Tanaka;Y. Teramoto;T. Tomura;K. Trabelsi;T. Tsuboyama;T. Tsukamoto;S. Uehara;T. Uglov;K. Ueno;Y. Unno;S. Uno;Y. Ushiroda;G. Varner;K. Varvell;C. Wang;M. Wang;Y. Watanabe;B. Yabsley;Y. Yamada;A. Yamaguchi;Y. Yamashita;M. Yamauchi;H. Yang;J. Ying;Z. Zhang;V. Zhilich;T. Ziegler;D. Žontar;D. Zürcher
S. Nishida;K. Abe;T. Abe;H. Aihara;Y. Asano;T. Aushev;S. Bahinipati;A. Bakich;Y. Ban;E. Banas;A. Bay;U. Bitenc;I. Bizjak;S. Blyth;A. Bondar;A. Bozek;M. Bračko;J. Brodzicka;T. Browder;M. Chang;P. Chang;K.F. Chen;B. Cheon;R. Chistov;S. Choi;Y. Choi;A. Chuvikov;S. Cole;M. Danilov;M. Dash;L. Dong;J. Dragic;S. Eidelman;V. Eiges;Y. Enari;D. Epifanov;F. Fang;S. Fratina;A. Garmash;T. Gershon;G. Gokhroo;B. Golob;J. Haba;T. Hara;N. Hastings;H. Hayashii;M. Hazumi;T. Higuchi;L. Hinz;Y. Hoshi;W. Hou;Y. Hsiung;T. Iijima;K. Inami;A. Ishikawa;H. Ishino;R. Itoh;M. Iwasaki;Y. Iwasaki;J. Kang;J. Kang;P. Kapusta;S. Kataoka;N. Katayama;T. Kawasaki;H. Kichimi;H. Kim;S. Kim;T. Kim;P. Koppenburg;S. Korpar;P. Križan;P. Krokovny;A. Kuzmin;Y. Kwon;J. Lange;G. Leder;S. Lee;S. Lee;J. Li;S. Lin;J. Macnaughton;G. Majumder;F. Mandl;T. Matsumoto;A. Matyja;W. Mitaroff;H. Miyake;R. Mizuk;D. Mohapatra;G. Moloney;A. Murakami;T. Nagamine;Y. Nagasaka;E. Nakano;M. Nakao;H. Nakazawa;Z. Natkaniec;O. Nitoh;T. Nozaki;S. Ogawa;T. Ohshima;T. Okabe;S. Okuno;S. Olsen;H. Ozaki;P. Pakhlov;H. Palka;C. Park;H. Park;Marco Peters;L. Piilonen;F. Ronga;M. Różańska;Y. Sakai;O. Schneider;J. Schümann;C. Schwanda;S. Semenov;R. Seuster;M. Sevior;H. Shibuya;B. Shwartz;A. Somov;N. Soni;R. Stamen;S. Stanič;M. Starič;A. Sugiyama;T. Sumiyoshi;S. Suzuki;O. Tajima;F. Takasaki;K. Tamai;M. Tanaka;Y. Teramoto;T. Tomura;K. Trabelsi;T. Tsuboyama;T. Tsukamoto;S. Uehara;T. Uglov;K. Ueno;Y. Unno;S. Uno;Y. Ushiroda;G. Varner;K. Varvell;C. Wang;M. Wang;Y. Watanabe;B. Yabsley;Y. Yamada;A. Yamaguchi;Y. Yamashita;M. Yamauchi;H. Yang;J. Ying;Z. Zhang;V. Zhilich;T. Ziegler;D. Žontar;D. Zürcher
中科院分区：
物理与天体物理1区
文献类型：
--
作者：
S. Nishida;K. Abe;T. Abe;H. Aihara;Y. Asano;T. Aushev;S. Bahinipati;A. Bakich;Y. Ban;E. Banas;A. Bay;U. Bitenc;I. Bizjak;S. Blyth;A. Bondar;A. Bozek;M. Bračko;J. Brodzicka;T. Browder;M. Chang;P. Chang;K.F. Chen;B. Cheon;R. Chistov;S. Choi;Y. Choi;A. Chuvikov;S. Cole;M. Danilov;M. Dash;L. Dong;J. Dragic;S. Eidelman;V. Eiges;Y. Enari;D. Epifanov;F. Fang;S. Fratina;A. Garmash;T. Gershon;G. Gokhroo;B. Golob;J. Haba;T. Hara;N. Hastings;H. Hayashii;M. Hazumi;T. Higuchi;L. Hinz;Y. Hoshi;W. Hou;Y. Hsiung;T. Iijima;K. Inami;A. Ishikawa;H. Ishino;R. Itoh;M. Iwasaki;Y. Iwasaki;J. Kang;J. Kang;P. Kapusta;S. Kataoka;N. Katayama;T. Kawasaki;H. Kichimi;H. Kim;S. Kim;T. Kim;P. Koppenburg;S. Korpar;P. Križan;P. Krokovny;A. Kuzmin;Y. Kwon;J. Lange;G. Leder;S. Lee;S. Lee;J. Li;S. Lin;J. Macnaughton;G. Majumder;F. Mandl;T. Matsumoto;A. Matyja;W. Mitaroff;H. Miyake;R. Mizuk;D. Mohapatra;G. Moloney;A. Murakami;T. Nagamine;Y. Nagasaka;E. Nakano;M. Nakao;H. Nakazawa;Z. Natkaniec;O. Nitoh;T. Nozaki;S. Ogawa;T. Ohshima;T. Okabe;S. Okuno;S. Olsen;H. Ozaki;P. Pakhlov;H. Palka;C. Park;H. Park;Marco Peters;L. Piilonen;F. Ronga;M. Różańska;Y. Sakai;O. Schneider;J. Schümann;C. Schwanda;S. Semenov;R. Seuster;M. Sevior;H. Shibuya;B. Shwartz;A. Somov;N. Soni;R. Stamen;S. Stanič;M. Starič;A. Sugiyama;T. Sumiyoshi;S. Suzuki;O. Tajima;F. Takasaki;K. Tamai;M. Tanaka;Y. Teramoto;T. Tomura;K. Trabelsi;T. Tsuboyama;T. Tsukamoto;S. Uehara;T. Uglov;K. Ueno;Y. Unno;S. Uno;Y. Ushiroda;G. Varner;K. Varvell;C. Wang;M. Wang;Y. Watanabe;B. Yabsley;Y. Yamada;A. Yamaguchi;Y. Yamashita;M. Yamauchi;H. Yang;J. Ying;Z. Zhang;V. Zhilich;T. Ziegler;D. Žontar;D. Zürcher

文献摘要

相似文献

B--&gt；SGamma过程中的直接CP破坏是超越标准模型的一个敏感的物理探测器。我们报道了在B--&GT；X(S)伽马中CP不对称性的测量，其中强子反冲系统X(S)是用伪重建技术重建的。在这种方法中，b--gt；d伽马衰变的污染可以忽略不计，这预计会有更大的CP不对称性。对于反冲质量小于2.1GeV/c(2)的B--&Gt；X(S)伽马事件，我们得到A(Cp)=0.002+/-0.050(STAT)+/-0.030(SYST)。分析是基于在KEKB e(+)e(-)存储环上与Belle探测器的upsilon(4S)共振记录的140 FB(-1)的数据样本。
Direct CP violation in the b-->sgamma process is a sensitive probe of physics beyond the standard model. We report a measurement of the CP asymmetry in B-->X(s)gamma, where the hadronic recoil system X(s) is reconstructed using a pseudoreconstruction technique. In this approach there is negligible contamination from b-->dgamma decays, which are expected to have a much larger CP asymmetry. We find A(CP)=0.002+/-0.050(stat)+/-0.030(syst) for B-->X(s)gamma events having recoil mass smaller than 2.1 GeV/c(2). The analysis is based on a data sample of 140 fb(-1) recorded at the upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring.