Search for quark contact interactions and extra spatial dimensions using dijet angular distributions in proton-proton collisions at √s=8 TeV

被引：28

作者：

Khachatryan, V. ^{[1
]}

Sirunyan, A. M. ^{[1
]}

Tumasyan, A. ^{[1
]}

Adam, W. ^{[2
]}

Bergauer, T. ^{[2
]}

Dragicevic, M. ^{[2
]}

Ero, J. ^{[2
]}

Friedl, M. ^{[2
]}

Fruehwirth, R. ^{[2
,189
]}

Ghete, V. M. ^{[2
]}

Hartl, C. ^{[2
]}

Hoermann, N. ^{[2
]}

Hrubec, J. ^{[2
]}

Jeitler, M. ^{[2
,189
]}

Kiesenhofer, W. ^{[2
]}

Knuenz, V. ^{[2
]}

Krammer, M. ^{[2
,189
]}

Kraetschmer, I. ^{[2
]}

Liko, D. ^{[2
]}

Mikulec, I. ^{[2
]}

Rabady, D. ^{[2
,190
]}

Rahbaran, B. ^{[2
]}

Rohringer, H. ^{[2
]}

Schoefbeck, R. ^{[2
]}

Strauss, J. ^{[2
]}

Treberer-Treberspurg, W. ^{[2
]}

Waltenberger, W. ^{[2
]}

Wulz, C. -E. ^{[2
,189
]}

Mossolov, V. ^{[3
]}

Shumeiko, N. ^{[3
]}

Zonzalez, J. Suarez ^{[3
]}

Alderweireldt, S. ^{[4
]}

Bansal, M. ^{[4
]}

Bansal, S. ^{[4
]}

Cornelis, T. ^{[4
]}

De Wolf, E. A. ^{[4
]}

Janssen, X. ^{[4
]}

Knutsson, A. ^{[4
]}

Lauwers, J. ^{[4
]}

Luyckx, S. ^{[4
]}

Ochesanu, S. ^{[4
]}

Rougny, R. ^{[4
]}

Van De Klundert, M. ^{[4
]}

Van Haevermaet, H. ^{[4
]}

Van Mechelen, P. ^{[4
]}

Van Remortel, N. ^{[4
]}

Van Spilbeeck, A. ^{[4
]}

Blekman, F. ^{[5
]}

Blyweert, S. ^{[5
]}

D'Hondt, J. ^{[5
]}

机构：

[1] Yerevan Phys Inst, Yerevan 375036, Armenia

[2] Inst Hochenergiephys OeAW, Vienna, Austria

[3] Natl Ctr Particle & High Energy Phys, Minsk, BELARUS

[4] Univ Antwerp, Antwerp, Belgium

[5] Vrije Univ Brussel, Brussels, Belgium

[6] Univ Libre Bruxelles, Brussels, Belgium

[7] Univ Ghent, B-9000 Ghent, Belgium

[8] Catholic Univ Louvain, Louvain La Neuve, Belgium

[9] Univ Mons, B-7000 Mons, Belgium

[10] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[11] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil

[12] Univ Estadual Paulista, Sao Paulo, Brazil

[13] Univ Fed ABC, Sao Paulo, Brazil

[14] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria

[15] Univ Sofia, BU-1126 Sofia, Bulgaria

[16] Inst High Energy Phys, Beijing 100039, Peoples R China

[17] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[18] Univ Los Andes, Bogota, Colombia

[19] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia

[20] Univ Split, Fac Sci, Split, Croatia

[21] Inst Rudjer Boskov, Zagreb, Croatia

[22] Univ Cyprus, CY-1678 Nicosia, Cyprus

[23] Charles Univ Prague, Prague, Czech Republic

[24] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt

[25] NICPB, Tallinn, Estonia

[26] Univ Helsinki, Dept Phys, Helsinki, Finland

[27] Helsinki Inst Phys, Helsinki, Finland

[28] Lappeenranta Univ Technol, Lappeenranta, Finland

[29] CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France

[30] Ecole Polytech, Lab Leprince Ringuet, IN2P3, CNRS, Palaiseau, France

[31] Univ Haute Alsace Mulhouse, Univ Strasbourg, Inst Pluridisciplinaire Hubert Curien, CNRS IN2P3, Strasbourg, France

[32] CNRS, IN2P3, Inst Natl Phys Nucl & Phys Particules, Ctr Calcul, Villeurbanne, France

[33] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France

[34] Tbilisi State Univ, Inst High Energy Phys & Informatizat, GE-380086 Tbilisi, Georgia

[35] Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany

[36] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany

[37] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany

[38] DESY, Hamburg, Germany

[39] Univ Hamburg, Hamburg, Germany

[40] Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe, Germany

[41] NCSR Demokritos, INPP, Aghia Paraskevi, Greece

[42] Univ Athens, Athens, Greece

[43] Univ Ioannina, GR-45110 Ioannina, Greece

[44] Wigner Res Ctr Phys, Budapest, Hungary

[45] Inst Nucl Res ATOMKI, Debrecen, Hungary

[46] Univ Debrecen, Debrecen, Hungary

[47] Natl Inst Sci Educ & Res, Bhubaneswar, Orissa, India

[48] Panjab Univ, Chandigarh 160014, India

[49] Univ Delhi, Delhi 110007, India

[50] Saha Inst Nucl Phys, Kolkata, India

来源：

PHYSICS LETTERS B | 2015年 / 746卷

基金：

美国国家科学基金会; 巴西圣保罗研究基金会; 芬兰科学院;

关键词：

CMS; Physics; QCD; Electroweak corrections; Contact interactions; Extra dimensions; HADRON-HADRON COLLISIONS; TO-LEADING ORDER;

D O I：

10.1016/j.physletb.2015.04.042

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search is presented for quark contact interactions and extra spatial dimensions in proton-proton collisions at root s = 8 TeV using dijet angular distributions. The search is based on a data set corresponding to an integrated luminosity of 19.7 fb(-1) collected by the CMS detector at the CERN LHC. Dijet angular distributions are found to be in agreement with the perturbative QCD predictions that include electroweak corrections. Limits on the contact interaction scale from a variety of models at next-to-leading order in QCD corrections are obtained. A benchmark model in which only left-handed quarks participate is excluded up to a scale of 9.0 (11.7) TeV for destructive (constructive) interference at 95% confidence level. Lower limits between 5.9 and 8.4 TeV on the scale of virtual graviton exchange are extracted for the Arkani-Hamed-Dimopoulos-Dvali model of extra spatial dimensions. (C) 2015 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.

引用

页码：79 / 99

页数：21

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