Measurements of W±Z production cross sections in pp collisions at √s=8 TeV with the ATLAS detector and limits on anomalous gauge boson self-couplings

被引：90

作者：

Aad, G. ^{[121
,122
]}

Abbott, B. ^{[153
]}

Abdallah, J. ^{[212
]}

Abdinov, O. ^{[14
]}

Abeloos, B. ^{[157
]}

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

Abolins, M. ^{[127
]}

AbouZeid, O. S. ^{[193
]}

Abramowicz, H. ^{[214
]}

Abreu, H. ^{[213
]}

Abreu, R. ^{[156
]}

Abulaiti, Y. ^{[205
,206
]}

Acharya, B. S. ^{[227
,228
,248
]}

Adamczyk, L. ^{[61
]}

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

Adelman, J. ^{[148
]}

Adomeit, S. ^{[137
]}

Adye, T. ^{[179
]}

Affolder, A. A. ^{[107
]}

Agatonovic-Jovin, T. ^{[16
]}

Agricola, J. ^{[81
]}

Aguilar-Saavedra, J. A. ^{[168
,173
,174
]}

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

Ahmadov, F. ^{[96
,249
]}

Aielli, G. ^{[182
,183
]}

Akerstedt, H. ^{[205
,206
]}

Akesson, T. P. ^{[117
]}

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

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

Albert, J. ^{[238
]}

Albrand, S. ^{[82
]}

Verzini, M. J. Alconada ^{[102
,103
]}

Aleksa, M. ^{[43
]}

Aleksandrov, I. N. ^{[96
]}

Alex, C. ^{[38
]}

Alexander, G. ^{[214
]}

Alexopoulos, T. ^{[13
]}

Alhroob, M. ^{[153
]}

Alimonti, G. ^{[128
]}

Alison, J. ^{[44
]}

Alkire, S. P. ^{[57
]}

Allbrooke, B. M. M. ^{[210
]}

Allen, B. W. ^{[156
]}

Allport, P. P. ^{[22
]}

Aloisio, A. ^{[43
,142
,143
,175
]}

Alonso, A. ^{[58
]}

Alonso, F. ^{[102
,103
]}

Alpigiani, C. ^{[194
]}

Gonzalez, B. Alvarez ^{[43
]}

Piqueras, D. Alvarez ^{[232
,233
,234
,235
,236
]}

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, TR-06100 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 Mt 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 370143, Azerbaijan

[15] Barcelona Inst Sci & Technol, IFAE, Barcelona, Spain

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

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

[18] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA

[19] Humboldt Univ, Dept Phys, Invalidenstr 110, Berlin, Germany

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

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

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

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

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

[25] Istanbul Bilgi Univ, Fac Engn & Nat Sci, Istanbul, Turkey

[26] Bahcesehir Univ, Fac Engn & Nat Sci, Istanbul, Turkey

[27] Univ Antonio Narino, Ctr Invest, Bogota, Colombia

[28] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy

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

[30] Univ Bonn, Inst Phys, Nussallee 12, 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, CP 20516, BR-01498 Sao Paulo, Brazil

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

[38] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest 077125, Romania

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

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

[41] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[42] Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada

[43] CERN, CH-1211 Geneva 23, Switzerland

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

[45] Pontificia Univ Catolica Chile, Dept Fis, Alameda 340, 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：

PHYSICAL REVIEW D | 2016年 / 93卷 / 09期

基金：

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

关键词：

PROTON-PROTON COLLISIONS; WZ PRODUCTION; P(P)OVER-BAR COLLISIONS; HADRON COLLIDERS; ZZ PRODUCTION; LHC; RECONSTRUCTION; ELECTRON; DISTRIBUTIONS; PERFORMANCE;

D O I：

10.1103/PhysRevD.93.092004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This paper presents measurements of W(+/-)Z production in pp collisions at a center-of-mass energy of 8 TeV. The gauge bosons are reconstructed using their leptonic decay modes into electrons and muons. The data were collected in 2012 by the ATLAS experiment at the Large Hadron Collider and correspond to an integrated luminosity of 20.3 fb(-1). The measured inclusive cross section in the detector fiducial region is sigma W(+/-)Z -> l'nu ll = 35.1 +/- 0.9(stat) +/- 0.8(sys) +/- 0.8(lumi) fb, for one leptonic decay channel. In comparison, the next-to-leading-order Standard Model expectation is 30.0 +/- 2.1 fb. Cross sections for W(+)Z and W(-)Z production and their ratio are presented as well as differential cross sections for several kinematic observables. Limits on anomalous triple gauge boson couplings are derived from the transverse mass spectrum of the W(+/-)Z system. From the analysis of events with a W and a Z boson associated with two or more forward jets an upper limit at 95% confidence level on the W(+/-)Z scattering cross section of 0.63 fb, for each leptonic decay channel, is established, while the Standard Model prediction at next-to-leading order is 0.13 +/- 0.01 fb. Limits on anomalous quartic gauge boson couplings are also extracted.

引用

页数：36

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