Search for high mass dilepton resonances in pp collisions at √s=7 TeV with the ATLAS experiment

被引：40

作者：

Aad, G. ^{[1
,71
]}

Abbott, B. ^{[150
]}

Abdallah, J. ^{[17
,18
,19
]}

Abdelalim, A. A. ^{[72
]}

Abdesselam, A. ^{[158
]}

Abdinov, O. ^{[16
]}

Abi, B. ^{[151
]}

Abolins, M. ^{[124
]}

Abramowicz, H. ^{[208
]}

Abreu, H. ^{[154
,155
]}

Acerbi, E. ^{[125
,126
]}

Acharya, B. S. ^{[221
,222
]}

Adams, D. L. ^{[38
]}

Addy, T. N. ^{[84
]}

Adelman, J. ^{[238
]}

Aderholz, M. ^{[136
]}

Adomeit, S. ^{[135
]}

Adragna, P. ^{[108
]}

Adye, T. ^{[173
]}

Aefsky, S. ^{[35
]}

Aguilar-Saavedra, J. A. ^{[166
,167
,168
]}

Aharrouche, M. ^{[116
]}

Ahlen, S. P. ^{[34
]}

Ahles, F. ^{[1
,71
]}

Ahmad, A. ^{[203
]}

Ahsan, M. ^{[62
]}

Aielli, G. ^{[178
,179
]}

Akdogan, T. ^{[28
]}

Akesson, T. P. A. ^{[114
]}

Akimoto, G. ^{[210
,211
]}

Akimov, A. V. ^{[131
]}

Akiyama, A. ^{[97
]}

Alam, M. S. ^{[2
]}

Alam, M. A. ^{[109
]}

Albrand, S. ^{[81
,82
,83
]}

Aleksa, M. ^{[44
]}

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

Alessandria, F. ^{[125
]}

Alexa, C. ^{[39
]}

Alexander, G. ^{[208
]}

Alexandre, G. ^{[72
]}

Alexopoulos, T. ^{[15
]}

Alhroob, M. ^{[33
]}

Aliev, M. ^{[24
]}

Alimonti, G. ^{[125
]}

Alison, J. ^{[161
]}

Aliyev, M. ^{[16
]}

Allport, P. P. ^{[105
]}

Allwood-Spiers, S. E. ^{[79
]}

Almond, J. ^{[117
]}

机构：

[1] Univ Freiburg, Fak Math & Phys, Freiburg, Germany

[2] SUNY Albany, Albany, NY 12222 USA

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

[4] Ankara Univ, Dept Phys, TR-06100 Ankara, Turkey

[5] Dumlupinar Univ, Dept Phys, Kutahya, Turkey

[6] Gazi Univ, Dept Phys, Ankara, Turkey

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

[8] Turkish Atom Energy Commiss, Ankara, Turkey

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

[10] Univ Savoie, Annecy Le Vieux, France

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

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

[13] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

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

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

[16] Azerbaijan Acad Sci, Inst Phys, Baku 370143, Azerbaijan

[17] Inst Altes Energies, Barcelona, Spain

[18] Univ Autonoma Barcelona, E-08193 Barcelona, Spain

[19] ICREA, Barcelona, Spain

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

[21] Vinca Inst Nucl Sci, Belgrade, Serbia

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

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

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

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

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

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

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

[29] Dogus Univ, Div Phys, Istanbul, Turkey

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

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

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

[33] Univ Bonn, Inst Phys, D-5300 Bonn, Germany

[34] Boston Univ, Dept Phys, Boston, MA 02215 USA

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

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

[37] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil

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

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

[40] Univ Politehn Bucuresti, Bucharest, Romania

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

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

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

[44] CERN, Geneva, Switzerland

[45] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

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

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

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

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

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

来源：

PHYSICS LETTERS B | 2011年 / 700卷 / 3-4期

基金：

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

关键词：

Grand unified theory; Narrow resonance; New gauge boson; Z '; Dilepton; Mass spectrum; FERMION-PAIR PRODUCTION; PARTON DISTRIBUTIONS; E(+)E(-) COLLISIONS; PHYSICS; CONSTRAINTS; BOSONS; LHC; Z';

D O I：

10.1016/j.physletb.2011.04.044

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This Letter presents a search for high mass e(+)e(-) or mu(+)mu(-) resonances in pp collisions at root s = 7 TeV at the LHC. The data were recorded by the ATLAS experiment during 2010 and correspond to a total integrated luminosity of similar to 40 pb(-1). No statistically significant excess above the Standard Model expectation is observed in the search region of dilepton invariant mass above 110 GeV. Upper limits at the 95% confidence level are set on the cross section times branching ratio of Z' resonances decaying to dielectrons and dimuons as a function of the resonance mass. A lower mass limit of 1.048 TeV on the Sequential Standard Model Z' boson is derived, as well as mass limits on Z* and E-6-motivated Z' models. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.

引用

页码：163 / 180

页数：18

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