Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in √s=8 TeV pp collisions with the ATLAS detector

被引：0

作者：

Aad, G. ^{[74
]}

Abajyan, T. ^{[32
]}

Abbott, B. ^{[153
]}

Abdallah, J. ^{[16
,17
]}

Khalek, S. Abdel ^{[157
,158
]}

Abdinov, O. ^{[15
]}

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

Abi, B. ^{[154
]}

Abolins, M. ^{[126
]}

AbouZeid, O. S. ^{[219
]}

Abramowicz, H. ^{[213
]}

Abreu, H. ^{[191
]}

Abulaiti, Y. ^{[204
,205
]}

Acharya, B. S. ^{[226
,246
,273
]}

Adamczyk, L. ^{[62
]}

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

Addy, T. N. ^{[86
]}

Adelman, J. ^{[243
]}

Adomeit, S. ^{[137
]}

Adye, T. ^{[176
]}

Aefsky, S. ^{[34
]}

Agatonovic-Jovin, T. ^{[19
]}

Aguilar-Saavedra, J. A. ^{[170
,171
]}

Agustoni, M. ^{[24
,25
]}

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

Ahmad, A. ^{[207
,208
]}

Ahsan, M. ^{[66
]}

Aielli, G. ^{[181
,182
]}

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

Akimoto, G. ^{[212
]}

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

Alam, M. A. ^{[111
]}

Albert, J. ^{[236
]}

Albrand, S. ^{[83
,84
,85
]}

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

Aleksa, M. ^{[46
]}

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

Alessandria, F. ^{[127
]}

Alexa, C. ^{[40
]}

Alexander, G. ^{[213
]}

Alexandre, G. ^{[75
]}

Alexopoulos, T. ^{[14
]}

Alhroob, M. ^{[213
,226
]}

Aliev, M. ^{[23
]}

Alimonti, G. ^{[127
]}

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

Alison, J. ^{[47
]}

Allbrooke, B. M. M. ^{[26
]}

Allison, L. J. ^{[104
]}

Allport, P. P. ^{[107
]}

机构：

[1] Univ Adelaide, Sch Chem & Phys, Adelaide, SA, Australia

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

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

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

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

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

[7] Turkish Atom Energy Commiss, Ankara, Turkey

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

[9] Univ Savoie, Annecy Le Vieux, France

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

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

[12] Univ Texas Arlington, Dept Phys, Arlington, TX USA

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

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

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

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

[17] Univ Autonoma Barcelona, Dept Fis, E-08193 Barcelona, Spain

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

[19] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade, Serbia

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

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

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

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

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

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

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

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

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

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

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

[31] Univ Bologna, Dipartimento Fis & Astron, 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] Univ Fed Juiz de Fora, 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] Natl Inst Res & Dev Isotop & Mol Technol, Dept Phys, Cluj Napoca, Romania

[42] Univ Politehn Bucuresti, Bucharest, Romania

[43] Univ Buenos Aires, Buenos Aires, DF, Argentina

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

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

[46] CERN, Geneva, Switzerland

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

[48] Pontificia Univ Catolica Chile, Fac Fis, Santiago 22, Chile

[49] Univ Tecn Feder Santa Maria, Dept Fis, Valparaiso, Chile

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 10期

基金：

美国国家科学基金会; 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;

关键词：

Hadron-Hadron Scattering; Supersymmetry; SYMMETRY-BREAKING; MODEL; SUPERSYMMETRY; WEAK;

D O I：

10.1007/JHEP10(2013)189

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：

The results of a search for pair production of supersymmetric partners of the Standard Model third-generation quarks are reported. This search uses 20.1 fb(-1) of pp collisions at root s = 8 TeV collected by the ATLAS experiment at the Large Hadron Collider. The lightest bottom and top squarks ((b) over tilde (1) and (t) over tilde (1) respectively) are searched for in a final state with large missing transverse momentum and two jets identified as originating from b-quarks. No excess of events above the expected level of Standard Model background is found. The results are used to set upper limits on the visible cross section for processes beyond the Standard Model. Exclusion limits at the 95% confidence level on the masses of the third-generation squarks are derived in phenomenological supersymmetric R-parity-conserving models in which either the bottom or the top squark is the lightest squark. The (b) over tilde (1) is assumed to decay via (b) over tilde (1) -> b (chi) over tilde (0)(1) and the (t) over tilde (1) via (t) over tilde (1) b (chi) over tilde (+/-)(1), with undetectable products of the subsequent decay of the (chi) over tilde (+/-)(1) due to the small mass splitting between the (chi) over tilde (+/-)(1) and the (chi) over tilde (0)(1)

引用

页数：40

共 50 条

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