Measurement of W± boson production in Pb plus Pb collisions at √sNN=5.02 TeV with the ATLAS detector

被引：0

作者：

Aad, G. ^{[159
]}

Abbott, B. ^{[190
]}

Abbott, D. C. ^{[160
]}

Abud, A. Abed ^{[114
,115
]}

Abeling, K. ^{[82
]}

Abhayasinghe, D. K. ^{[150
]}

Abidi, S. H. ^{[237
]}

AbouZeid, O. S. ^{[65
]}

Abraham, N. L. ^{[224
]}

Abramowicz, H. ^{[230
]}

Abreu, H. ^{[229
]}

Abulaiti, Y. ^{[8
]}

Acharya, B. S. ^{[105
,106
,265
]}

Achkar, B. ^{[82
]}

Adachi, S. ^{[232
,233
]}

Adam, L. ^{[157
]}

Bourdarios, C. Adam ^{[7
]}

Adamczyk, L. ^{[136
]}

Adamek, L. ^{[237
]}

Adelman, J. ^{[181
]}

Adersberger, M. ^{[172
]}

Adiguzel, A. ^{[16
,278
]}

Adorni, S. ^{[83
]}

Adye, T. ^{[211
]}

Affolder, A. A. ^{[213
]}

Afik, Y. ^{[229
]}

Agapopoulou, C. ^{[194
]}

Agaras, M. N. ^{[63
]}

Aggarwal, A. ^{[178
]}

Agheorghiesei, C. ^{[42
]}

Aguilar-Saavedra, J. A. ^{[202
,207
,277
]}

Ahmadov, F. ^{[129
]}

Ahmed, W. S. ^{[161
]}

Ai, X. ^{[20
]}

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

Akatsuka, S. ^{[139
]}

Akesson, T. P. A. ^{[153
]}

Akilli, E. ^{[83
]}

Akimov, A., V ^{[168
]}

Al Khoury, K. ^{[194
]}

Alberghi, G. L. ^{[34
,35
,36
]}

Albert, J. ^{[248
]}

Verzini, M. J. Alconada ^{[143
,144
]}

Alderweireldt, S. ^{[61
]}

Aleksa, M. ^{[61
]}

Aleksandrov, I. N. ^{[129
]}

Alexa, C. ^{[41
]}

Alexandre, D. ^{[28
]}

Alexopoulos, T. ^{[12
]}

Alfonsi, A. ^{[179
,180
]}

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] Univ Grenoble Alpes, Univ Savoie Mt Blanc, IN2P3, CNRS,LAAP, Annecy, France

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

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

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

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

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

[13] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

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

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

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

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

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

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

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

[21] Tsinghua Univ, Phys Dept, Beijing, Peoples R China

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

[23] Univ Chinese Acad Sci, Beijing, Peoples R China

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

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

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

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

[28] Humboldt Univ, Inst Phys, Berlin, Germany

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

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

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

[32] Univ Antonio Narino, Fac Ciencias, Bogota, Colombia

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

[34] INFN Bologna, Bologna, Italy

[35] Univ Bologna, Dipartimento Fis, Bologna, Italy

[36] INFN, Sez Bologna, Bologna, Italy

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

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

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

[40] Transilvania Univ Brasov, Brasov, Romania

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

[42] Alexandru Ioan Cuza Univ, Dept Phys, Iasi, Romania

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

[44] West Univ Timisoara, Timisoara, Romania

[45] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia

[46] Slovak Acad Sci, Dept Subnucl Phys, Inst Expt Phys, Kosice, Slovakia

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

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

[49] Calif State Univ, Long Beach, CA USA

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

来源：

EUROPEAN PHYSICAL JOURNAL C | 2019年 / 79卷 / 11期

基金：

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：

QUARK-GLUON PLASMA; PERSPECTIVE; PP;

D O I：

10.1140/epjc/s10052-019-7439-3

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 W-+/- boson production in Pb+Pb collisions at root s(NN) = 5.02 TeV is reported using data recorded by the ATLAS experiment at the LHC in 2015, corresponding to a total integrated luminosity of 0.49 nb(-1). The W-+/- bosons are reconstructed in the electron or muon leptonic decay channels. Production yields of leptonically decaying W-+/- bosons, normalised by the total number of minimum-bias events and the nuclear thickness function, are measured within a fiducial region defined by the detector acceptance and the main kinematic requirements. These normalised yields are measured separately for W+ and W- bosons, and are presented as a function of the absolute value of pseudorapidity of the charged lepton and of the collision centrality. The lepton charge asymmetry is also measured as a function of the absolute value of lepton pseudorapidity. In addition, nuclear modification factors are calculated using the W-+/- boson production cross-sections measured in pp collisions. The results are compared with predictions based on next-to-leading-order calculations with CT14 parton distribution functions as well as with predictions obtained with the EPPS16 and nCTEQ15 nuclear parton distribution functions. No dependence of normalised production yields on centrality and a good agreement with predictions are observed for mid-central and central collisions. For peripheral collisions, the data agree with predictions within 1.7 (0.9) standard deviations for W- (W+) bosons.

引用

页数：32

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