Measurement ofBd0−B¯d0Mixing Rate from the Time Evolution of Dilepton Events at theϒ(4S)

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ID: 268860
2001
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Abstract
We report a determination of the Bd0−B¯d0 mixing parameter Δmd based on the time evolution of dilepton yields in ϒ(4S) decays. The measurement is based on a 5.9fb−1 data sample collected by the Belle detector at KEKB. The proper-time difference distributions for same-sign and opposite-sign dilepton events are simultaneously fitted to an expression containing Δmd as a free parameter. Using both muons and electrons, we obtain Δmd=0.463±0.008(stat)±0.016(syst)ps−1. This is the first determination of Δmd from time evolution measurements at the ϒ(4S). We also place limits on possible CPT violations.
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Authors K. Abe,I. Adachi,Byoung Sup Ahn,H. Aihara,M. Akatsu,G. Alimonti,K. Aoki,K. Asai,M. Asai,Y. Asano,T. Aso,V. Aulchenko,T. Aushev,A. M. Bakich,E. Banas,S. Behari,Prafulla Kumar Behera,D. Beiline,A. Bondar,A. Bozek,T. E. Browder,B. C. K. Casey,Pao-Ti Chang,Y. Chao,B. G. Cheon,S.-K. Choi,Y. Choi,Y. Doi,J. Dragic,S. Eidelman,Y. Enari,R. Enomoto,C. W. Everton,F. Fang,H. Fujii,Y. Fujita,C. Fukunaga,M. Fukushima,A. Garmash,A. Gordon,K. Gotow,H. Guler,R. Guo,J. Haba,T. Haji,H. Hamasaki,K. Hanagaki,F. Handa,K. Hara,Takanori Hara,N. C. Hastings,K. Hayashi,H. Hayashii,M. Hazumi,E. M. Heenan,I. Higuchi,T. Hirai,H. Hirano,T. Hojo,Y. Hoshi,W.-S. Hou,S.-C. Hsu,H.-C. Huang,S. Ichizawa,Youichi Igarashi,T. Iijima,H. Ikeda,K. Ikeda,K. Inami,Y. Inoue,Akimasa Ishikawa,H. Ishino,R. Itoh,G. Iwai,H. Iwasaki,D. J. Jackson,P. Jalocha,H. K. Jang,M. Jones,R. Kagan,H. Kakuno,J. Kaneko,J. H. Kang,P. Kapusta,K. Kasami,N. Katayama,H. Kawai,M. Kawai,N. Kawamura,T. Kawasaki,H. Kichimi,D. W. Kim,Heejong Kim,S. K. Kim,K. Kinoshita,S. Kobayashi,S. Koike,S. Koishi,H. Konishi,K. Korotushenko,Pavel Krokovny,R. Kulasiri,S. Kumar,T. Kuniya,E. Kurihara,A. Kuzmin,Y.-J. Kwon,M. H. Lee,S. H. Lee,Christos Leonidopoulos,H.-B. Li,R.-S. Lu,Y. Makida,A. Manabe,D. Marlow,T. Matsubara,T. Matsuda,S. Matsui,S. Matsumoto,K. Miyabayashi,H. Miyake,H. Miyata,L. C. Moffitt,A. Mohapatra,G. R. Moloney,G. F. Moorhead,S. Mori,T. Mori,A. Murakami,T. Nagamine,Y. Nagasaka,Y. Nagashima,T. Nakadaira,E. Nakano,M. Nakao,H. Nakazawa,J. W. Nam,S. Narita,Z. Natkaniec,K. Neichi,Shohei Nishida,O. Nitoh,S. Noguchi,T. Nozaki,S. Ogawa,T. Ohshima,T. Okabe,T. Okazaki,S. Okuno,S. L. Olsen,H. Ozaki,Pavel Pakhlov,H. Palka,C. S. Park,H. Park,L. S. Peak,M. Peters,L. E. Piilonen,E. Prebys,Jennifer Raaf,J. L. Rodriguez,N. Root,M. Rozanska,K. Rybicki,J. Ryuko,H. Sagawa,Y. Sakai,H. Sakamoto,H. Sakaue,M. Satapathy,N. Sato,A. Satpathy,S. Schrenk,S. Semenov,Martin Sevior,H. Shibuya,B. Shwartz,A. Sidorov,S. Stanic̆,A. Sugi,A. Sugiyama,K. Sumisawa,T. Sumiyoshi,J. Suzuki,K. Suzuki,S. Y. Suzuki,S. K. Swain,H. Tajima,T. Takahashi,F. Takasaki,M. Takita,K. Tamai,N. Tamura,J. Tanaka,M. Tanaka,Y. Tanaka,G. N. Taylor,Y. Teramoto,M. Tomoto,T. Tomura,S. N. Tovey,Karim Trabelsi,T. Tsuboyama,Y. Tsujita,T. Tsukamoto,S. Uehara,K. Ueno,N. Ujiie,Y. Unno,S. Uno,Y. Ushiroda,Y. Usov,S. E. Vahsen,G. Varner,K. E. Varvell,C. C. Wang,M.-Z. Wang,T. J. Wang,Y. Watanabe,E. Won,B. D. Yabsley,Y. Yamada,M. Yamaga,A. Yamaguchi,H. Yamaoka,Y. Yamashita,M. Yamauchi,S. Yanaka,Masashi Yokoyama,K. Yoshida,Y. Yusa,H. Yuta,C. C. Zhang,H. W. Zhao,Y. Zheng,V. Zhilich,D. Z̆ontar,T. Higuchi,Y.-C. Huang,Y. Iwasaki,J. S. Kang,H. J. Kim,Hyunwoo Kim,T. Matsumoto,Y. Ohshima,C. W. Park,V. Sidorov,C. H. Wang,H. Yamaguchi,Y. Yamaoka;K. Abe;I. Adachi;Byoung Sup Ahn;H. Aihara;M. Akatsu;G. Alimonti;K. Aoki;K. Asai;M. Asai;Y. Asano;T. Aso;V. Aulchenko;T. Aushev;A. M. Bakich;E. Banas;S. Behari;Prafulla Kumar Behera;D. Beiline;A. Bondar;A. Bozek;T. E. Browder;B. C. K. Casey;Pao-Ti Chang;Y. Chao;B. G. Cheon;S.-K. Choi;Y. Choi;Y. Doi;J. Dragic;S. Eidelman;Y. Enari;R. Enomoto;C. W. Everton;F. Fang;H. Fujii;Y. Fujita;C. Fukunaga;M. Fukushima;A. Garmash;A. Gordon;K. Gotow;H. Guler;R. Guo;J. Haba;T. Haji;H. Hamasaki;K. Hanagaki;F. Handa;K. Hara;Takanori Hara;N. C. Hastings;K. Hayashi;H. Hayashii;M. Hazumi;E. M. Heenan;I. Higuchi;T. Hirai;H. Hirano;T. Hojo;Y. Hoshi;W.-S. Hou;S.-C. Hsu;H.-C. Huang;S. Ichizawa;Youichi Igarashi;T. Iijima;H. Ikeda;K. Ikeda;K. Inami;Y. Inoue;Akimasa Ishikawa;H. Ishino;R. Itoh;G. Iwai;H. Iwasaki;D. J. Jackson;P. Jalocha;H. K. Jang;M. Jones;R. Kagan;H. Kakuno;J. Kaneko;J. H. Kang;P. Kapusta;K. Kasami;N. Katayama;H. Kawai;M. Kawai;N. Kawamura;T. Kawasaki;H. Kichimi;D. W. Kim;Heejong Kim;S. K. Kim;K. Kinoshita;S. Kobayashi;S. Koike;S. Koishi;H. Konishi;K. Korotushenko;Pavel Krokovny;R. Kulasiri;S. Kumar;T. Kuniya;E. Kurihara;A. Kuzmin;Y.-J. Kwon;M. H. Lee;S. H. Lee;Christos Leonidopoulos;H.-B. Li;R.-S. Lu;Y. Makida;A. Manabe;D. Marlow;T. Matsubara;T. Matsuda;S. Matsui;S. Matsumoto;K. Miyabayashi;H. Miyake;H. Miyata;L. C. Moffitt;A. Mohapatra;G. R. Moloney;G. F. Moorhead;S. Mori;T. Mori;A. Murakami;T. Nagamine;Y. Nagasaka;Y. Nagashima;T. Nakadaira;E. Nakano;M. Nakao;H. Nakazawa;J. W. Nam;S. Narita;Z. Natkaniec;K. Neichi;Shohei Nishida;O. Nitoh;S. Noguchi;T. Nozaki;S. Ogawa;T. Ohshima;T. Okabe;T. Okazaki;S. Okuno;S. L. Olsen;H. Ozaki;Pavel Pakhlov;H. Palka;C. S. Park;H. Park;L. S. Peak;M. Peters;L. E. Piilonen;E. Prebys;Jennifer Raaf;J. L. Rodriguez;N. Root;M. Rozanska;K. Rybicki;J. Ryuko;H. Sagawa;Y. Sakai;H. Sakamoto;H. Sakaue;M. Satapathy;N. Sato;A. Satpathy;S. Schrenk;S. Semenov;Martin Sevior;H. Shibuya;B. Shwartz;A. Sidorov;S. Stanic̆;A. Sugi;A. Sugiyama;K. Sumisawa;T. Sumiyoshi;J. Suzuki;K. Suzuki;S. Y. Suzuki;S. K. Swain;H. Tajima;T. Takahashi;F. Takasaki;M. Takita;K. Tamai;N. Tamura;J. Tanaka;M. Tanaka;Y. Tanaka;G. N. Taylor;Y. Teramoto;M. Tomoto;T. Tomura;S. N. Tovey;Karim Trabelsi;T. Tsuboyama;Y. Tsujita;T. Tsukamoto;S. Uehara;K. Ueno;N. Ujiie;Y. Unno;S. Uno;Y. Ushiroda;Y. Usov;S. E. Vahsen;G. Varner;K. E. Varvell;C. C. Wang;M.-Z. Wang;T. J. Wang;Y. Watanabe;E. Won;B. D. Yabsley;Y. Yamada;M. Yamaga;A. Yamaguchi;H. Yamaoka;Y. Yamashita;M. Yamauchi;S. Yanaka;Masashi Yokoyama;K. Yoshida;Y. Yusa;H. Yuta;C. C. Zhang;H. W. Zhao;Y. Zheng;V. Zhilich;D. Z̆ontar;T. Higuchi;Y.-C. Huang;Y. Iwasaki;J. S. Kang;H. J. Kim;Hyunwoo Kim;T. Matsumoto;Y. Ohshima;C. W. Park;V. Sidorov;C. H. Wang;H. Yamaguchi;Y. Yamaoka;
Journal physical review letters
Year 2001
DOI
10.1103/physrevlett.86.3228
URL
https://sciprofiles.com/publication/view/14ca5aec03a5df8f11de4d14c89fe385
Keywords
sign simultaneously belle kekb time evolution bd0 dilepton

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