Measurement of the CP-violating phase φs and the Bs0 meson decay width difference with Bs0 → J/ψφ decays in ATLAS

被引：32

作者：

Aad, G. ^{[120
,121
]}

Abbott, B. ^{[153
]}

Abdallah, J. ^{[213
]}

Abdinov, O. ^{[14
]}

Aben, R. ^{[146
,147
]}

Abolins, M. ^{[126
]}

AbouZeid, O. S. ^{[221
]}

Abramowicz, H. ^{[215
]}

Abreu, H. ^{[214
]}

Abreu, R. ^{[156
]}

Abulaiti, Y. ^{[206
,207
]}

Acharya, B. S. ^{[228
,229
,249
]}

Adamczyk, L. ^{[60
]}

Adams, D. L. ^{[37
]}

Adelman, J. ^{[148
]}

Adomeit, S. ^{[137
]}

Adye, T. ^{[180
]}

Affolder, A. A. ^{[106
]}

Agatonovic-Jovin, T. ^{[17
]}

Agricola, J. ^{[80
]}

Aguilar-Saavedra, J. A. ^{[169
,174
,175
]}

Ahlen, S. P. ^{[31
]}

Ahmadov, F. ^{[14
,95
]}

Aielli, G. ^{[183
,184
]}

Akerstedt, H. ^{[206
,207
]}

Akesson, T. P. A. ^{[116
]}

Akimov, A. V. ^{[133
]}

Alberghi, G. L. ^{[28
,29
]}

Albert, J. ^{[239
]}

Albrand, S. ^{[81
]}

Alconada Verzini, M. J. ^{[101
,102
]}

Aleksa, M. ^{[43
]}

Aleksandrov, I. N. ^{[95
]}

Alexa, C. ^{[38
]}

Alexander, G. ^{[215
]}

Alexopoulos, T. ^{[13
]}

Alhroob, M. ^{[153
]}

Alimonti, G. ^{[127
]}

Alio, L. ^{[120
,121
]}

Alison, J. ^{[44
]}

Alkire, S. P. ^{[56
]}

Allbrooke, B. M. M. ^{[211
]}

Allport, P. P. ^{[106
]}

Aloisio, A. ^{[142
,143
]}

Alonso, A. ^{[57
]}

Alonso, F. ^{[101
,102
]}

Alpigiani, C. ^{[109
]}

Altheimer, A. ^{[56
]}

Gonzalez, B. Alvarez ^{[43
]}

Alvarez Piqueras, D. ^{[233
,234
,235
,236
,237
]}

机构：

[1] Univ Adelaide, Dept Phys, Adelaide, SA, Australia

[2] SUNY Albany, Dept Phys, Albany, NY 12222 USA

[3] Univ Alberta, Dept Phys, Edmonton, AB, Canada

[4] Ankara Univ, Dept Phys, Ankara, Turkey

[5] Istanbul Aydin Univ, Istanbul, Turkey

[6] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey

[7] CNRS, IN2P3, LAPP, Annecy Le Vieux, France

[8] Univ Savoie Mont Blanc, Annecy Le Vieux, France

[9] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA

[10] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[11] Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA

[12] Univ Athens, Dept Phys, Athens, Greece

[13] Natl Tech Univ Athens, Dept Phys, Zografos, Greece

[14] Azerbaijan Acad Sci, Inst Phys, Baku, Azerbaijan

[15] Univ Autonoma Barcelona, Inst Fis Altes Energies, Barcelona, Spain

[16] Univ Autonoma Barcelona, Dept Fis, Barcelona, Spain

[17] Univ Belgrade, Inst Phys, Belgrade, Serbia

[18] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[19] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA USA

[20] Univ Calif Berkeley, Berkeley, CA 94720 USA

[21] Humboldt Univ, Dept Phys, Berlin, Germany

[22] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland

[23] Univ Bern, High Energy Phys Lab, Bern, Switzerland

[24] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England

[25] Bogazici Univ, Dept Phys, Istanbul, Turkey

[26] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey

[27] Dogus Univ, Dept Phys, Istanbul, Turkey

[28] Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy

[29] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy

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

[31] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA

[32] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA

[33] Univ Fed Rio de Janeiro, COPPE EE IF, Rio De Janeiro, Brazil

[34] Fed Univ Juiz de Fora UFJF, Elect Circuits Dept, Juiz De Fora, Brazil

[35] Fed Univ Sao Joao Del Rei UFSJ, Sao Joao Del Rei, Brazil

[36] Univ Sao Paulo, Inst Fis, Sao Paulo, Brazil

[37] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[38] Natl Inst Phys & Nucl Engn, Bucharest, Romania

[39] Dept Phys, Natl Inst Res & Dev Isotop & Mol Technol, Cluj Napoca, Romania

[40] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina

[41] Univ Cambridge, Cavendish Lab, Cambridge, England

[42] Carleton Univ, Dept Phys, Ottawa, ON, Canada

[43] CERN, Geneva, Switzerland

[44] Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA

[45] Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile

[46] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile

[47] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[48] Univ Sci & Technol China, Dept Modern Phys, Hefei, Anhui, Peoples R China

[49] Nanjing Univ, Dept Phys, Nanjing, Jiangsu, Peoples R China

[50] Shandong Univ, Sch Phys, Jinan, Shandong, Peoples R China

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 08期

基金：

加拿大自然科学与工程研究理事会; 巴西圣保罗研究基金会; 欧盟地平线“2020”; 美国国家科学基金会;

关键词：

B physics; CP violation; Flavor physics; Hadron-Hadron scattering (experiments);

D O I：

10.1007/JHEP08(2016)147

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A measurement of the B-s(0) decay parameters in the B-s(0) -> J/psi/phi channel using an integrated luminosity of 14.3 fb(-1) collected by the ATLAS detector from 8TeV pp collisions at the LHC is presented. The measured parameters include the CP-violating phase phi(s), the decay width Gamma(s) and the width di ff erence between the mass eigenstates Delta Gamma(s). The values measured for the physical parameters are statistically combined with those from 4.9 fb-1 of 7TeV data, leading to the following: phi(s) = -0.090 +/- 0.078 (stat.) +/- 0.041 (syst.) rad Delta Gamma s = 0.085 +/- 0.011 (stat.) +/- 0.007 (syst.) ps(-1) Gamma(s) = 0.675 +/- 0.003 (stat.) +/- 0.003 (syst:) ps(-1). In the analysis the parameter Delta Gamma(s) is constrained to be positive. Results for phi(s) and Delta Gamma(s) are also presented as 68% and 95% likelihood contours in the phi(s)-Delta Gamma(s) plane. Also measured in this decay channel are the transversity amplitudes and corresponding strong phases. All measurements are in agreement with the Standard Model predictions.

引用

页数：45

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