Search for first generation scalar leptoquarks in pp collisions at √s=7 TeV with the ATLAS detector

被引：45

作者：

Aad, G. ^{[71
]}

Abbott, B. ^{[149
]}

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

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

Abdesselam, A. ^{[157
]}

Abdinov, O. ^{[16
]}

Abi, B. ^{[150
]}

Abolins, M. ^{[123
]}

AbouZeid, O. S. ^{[213
]}

Abramowicz, H. ^{[207
]}

Abreu, H. ^{[153
,154
]}

Acerbi, E. ^{[124
,125
]}

Acharya, B. S. ^{[220
,221
]}

Adamczyk, L. ^{[60
]}

Adams, D. L. ^{[39
]}

Addy, T. N. ^{[83
]}

Adelman, J. ^{[237
]}

Aderholz, M. ^{[135
]}

Adomeit, S. ^{[134
]}

Adragna, R. ^{[107
]}

Adye, T. ^{[172
]}

Aefsky, S. ^{[34
]}

Aguilar-Saavedra, J. A. ^{[165
,166
,167
]}

Aharrouche, M. ^{[115
]}

Ahlen, S. P. ^{[33
]}

Ahles, F. ^{[71
]}

Ahmad, A. ^{[202
]}

Ahsan, M. ^{[63
]}

Aielli, G. ^{[177
,178
]}

Akdogan, T. ^{[1
]}

Akesson, T. P. A. ^{[113
]}

Akimoto, G. ^{[209
,210
]}

Akimov, A. V. ^{[130
]}

Akiyama, A. ^{[96
]}

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

Alam, M. A. ^{[108
]}

Albert, J. ^{[231
]}

Albrand, S. ^{[80
,81
,82
]}

Aleksa, M. ^{[45
]}

Aleksandrov, I. N. ^{[94
]}

Alessandria, F. ^{[124
]}

Alexa, C. ^{[40
]}

Alexander, G. ^{[207
]}

Alexandre, G. ^{[72
]}

Alexopoulos, T. ^{[15
]}

Alhroob, M. ^{[32
]}

Aliev, M. ^{[24
]}

Alimonti, G. ^{[124
]}

Alison, J. ^{[160
]}

Aliyevm, M. ^{[16
]}

机构：

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

[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] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain

[18] Univ Autonoma Barcelona, Dept Fis, 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 Natl 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] Dogus Univ, Div Phys, Istanbul, Turkey

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

[30] Univ Bologna, Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy

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

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

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

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

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

[36] Fed Univ Juiz de Fora UFJF, Juiz De Fora, Brazil

[37] Fed Univ Sao Joao del Rei UFSJ, Sao Joao Del Rei, Brazil

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

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

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

[41] Univ Politehn Bucuresti, Bucharest, Romania

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

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

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

[45] CERN, Geneva, Switzerland

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

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

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

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

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

来源：

PHYSICS LETTERS B | 2012年 / 709卷 / 03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：

D O I：

10.1016/j.physletb.2012.02.004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report a search for first generation scalar leptoquarks using 1.03 fb(-1) of proton-proton collisions data produced by the Large Hadron Collider at root s = 7 TeV and recorded by the ATLAS experiment. Leptoquarks are sought via their decay into an electron or neutrino and a quark, producing events with two oppositely charged electrons and at least two jets, or events with an electron, missing transverse momentum and at least two jets. Control data samples are used to validate background predictions from Monte Carlo simulation. In the signal region, the observed event yields are consistent with the background expectations. We exclude at 95% confidence level the production of first generation scalar leptoquark with masses m(LQ) < 660 (607) GeV when assuming the branching fraction of a leptoquark to a charged lepton is equal to 1.0 (0.5). (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.

引用

页码：158 / 176

页数：19

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