Measurement of the CP-violation parameter of B0 mixing and decay with p(p)over-bar→μμX data

被引：48

作者：

Abazov, V. M. ^{[1
]}

Abbott, B.

Abolins, M.

Acharya, B. S.

Adams, M.

Adams, T.

Agelou, M.

Aguilo, E.

Ahn, S. H.

Ahsan, M.

Alexeev, G. D.

Alkhazov, G.

Alton, A.

Alverson, G.

Alves, G. A.

Anastasoaie, M.

Andeen, T.

Anderson, S.

Andrieu, B.

Anzelc, M. S.

Arnoud, Y.

Arov, M.

Askew, A.

Asman, B.

Jesus, A. C. S. Assis

Atramentov, O.

Autermann, C.

Avila, C.

Ay, C.

Badaud, F.

Baden, A.

Bagby, L.

Baldin, B.

Bandurin, D. V.

Banerjee, P.

Banerjee, S.

Barberis, E.

Bargassa, P.

Baringer, P.

Barnes, C.

Barreto, J.

Bartlett, J. F.

Bassler, U.

Bauer, D.

Beale, S.

Bean, A.

Begalli, M.

Begel, M.

Belanger-Champagne, C.

Bellantoni, L.

机构：

[1] Univ Buenos Aires, Buenos Aires, DF, Argentina

[2] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil

[3] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil

[4] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil

[5] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada

[6] Univ Alberta, Edmonton, AB, Canada

[7] Univ Sci & Technol China, Hefei 230026, Peoples R China

[8] Univ Los Andes, Bogota, Colombia

[9] Charles Univ Prague, Ctr Particle Phys, Prague, Czech Republic

[10] Czech Tech Univ, CR-16635 Prague, Czech Republic

[11] Acad Sci Czech Republ, Inst Phys, Ctr Particle Phys, Prague, Czech Republic

[12] Univ San Francisco Quito, Quito, Ecuador

[13] Univ Clermont Ferrand, CNRS, IN2P3, Phys Corpusculaire Lab, Clermont Ferrand, France

[14] Univ Grenoble 1, CNRS, IN2P3, Lab Phys Subatom & Cosmol, Grenoble, France

[15] Univ Mediterranee, CNRS, CPPM, IN2P3, Marseille, France

[16] CNRS, Accelerateur Lineaire Lab, IN2P3, F-91405 Orsay, France

[17] Univ Paris 06, CNRS, IN2P3, LPHNE, Paris, France

[18] Univ Paris 07, Paris, France

[19] CEA, Serv Phys Particules, DAPNIA, Saclay, France

[20] Univ Haute Alsace, Mulhouse, France

[21] Univ Strasbourg, CNRS, IPHC, IN2P3, Strasbourg, France

[22] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France

[23] Rhein Westfal TH Aachen, Inst Phys A 3, D-5100 Aachen, Germany

[24] Univ Bonn, Inst Phys, Bonn, Germany

[25] Univ Freiburg, Inst Phys, Freiburg, Germany

[26] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany

[27] Univ Munich, Munich, Germany

[28] Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany

[29] Panjab Univ, Chandigarh 160014, India

[30] Univ Delhi, Delhi 110007, India

[31] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[32] Univ Coll Dublin, Dublin 2, Ireland

[33] Korea Univ, Korea Detector Lab, Seoul 136701, South Korea

[34] Sungkyunkwan Univ, Suwon, South Korea

[35] CINVESTAV, Mexico City 14000, DF, Mexico

[36] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands

[37] NIKHEF, FOM Inst, Amsterdam, Netherlands

[38] Radboud Univ Nijmegen, NIKHEF, Nijmegen, Netherlands

[39] Joint Inst Nucl Res, Dubna, Russia

[40] Inst Theoret & Expt Phys, Moscow, Russia

[41] Moscow MV Lomonosov State Univ, Moscow, Russia

[42] Inst High Energy Phys, Protvino, Russia

[43] Petersburg Nucl Phys Inst, St Petersburg, Russia

[44] Lund Univ, Lund, Sweden

[45] Royal Inst Technol, Stockholm, Sweden

[46] Univ Stockholm, Stockholm, Sweden

[47] Uppsala Univ, Uppsala, Sweden

[48] Univ Zurich, Inst Phys, Zurich, Switzerland

[49] Univ Lancaster, Lancaster, England

[50] Univ London Imperial Coll Sci Technol & Med, London, England

来源：

PHYSICAL REVIEW D | 2006年 / 74卷 / 09期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevD.74.092001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We measure the dimuon charge asymmetry A in p (p) over bar collisions at a center of mass energy root s=1960 GeV. The data was recorded with the D0 detector and corresponds to an integrated luminosity of approximately 1.0 fb(-1). Assuming that the asymmetry A is due to asymmetric B-0 <->(B) over bar (0) mixing and decay, we extract the CP-violation parameter of B-0 mixing and decay: ((epsilon B0))/(1+vertical bar epsilon B0 vertical bar 2)=(AB0)/(4)= -0.0023 +/- 0.0011(stat)+/- 0.0008(syst).A(B)(0) is the dimuon charge asymmetry from decays of B-0(B) over bar (0) pairs. The general case, with CP violation in both B-0 and B-s(0) systems, is also considered. Finally we obtain the forward-backward asymmetry that quantifies the tendency of mu(+) to go in the proton direction and mu(-) to go in the antiproton direction. The results are consistent with the standard model and constrain new physics.

引用

页数：12

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