Search for Top-Quark Partners with Charge 5/3 in the Same-Sign Dilepton Final State

被引：80

作者：

Chatrchyan, S. ^{[1
]}

Khachatryan, V. ^{[1
]}

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

Tumasyan, A. ^{[1
]}

Adam, W. ^{[1
]}

Bergauer, T. ^{[2
]}

Dragicevic, M. ^{[2
]}

Eroe, J. ^{[2
]}

Fabjan, C. ^{[2
,187
]}

Friedl, M. ^{[2
]}

Fruehwirth, R. ^{[2
,187
]}

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

Hartl, C. ^{[2
]}

Hoermann, N. ^{[2
]}

Hrubec, J. ^{[2
]}

Jeitler, M. ^{[2
,187
]}

Kiesenhofer, W. ^{[2
]}

Knuenz, V. ^{[2
]}

Krammer, M. ^{[2
,187
]}

Kraetschmer, I. ^{[2
]}

Liko, D. ^{[2
]}

Mikulec, I. ^{[2
]}

Rabady, D. ^{[2
,188
]}

Rahbaran, B. ^{[2
]}

Rohringer, H. ^{[2
]}

Schoefbeck, R. ^{[2
]}

Strauss, J. ^{[2
]}

Taurok, A. ^{[2
]}

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

Waltenberger, W. ^{[2
]}

Wulz, C. -E. ^{[2
,187
]}

Mossolov, V. ^{[3
]}

Shumeiko, N. ^{[3
]}

Gonzalez, 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
]}

Luyckx, S. ^{[4
]}

Mucibello, L. ^{[4
]}

Ochesanu, S. ^{[4
]}

Roland, B. ^{[4
]}

Rougny, R. ^{[4
]}

Van Haevermaet, H. ^{[4
]}

Van Mechelen, P. ^{[4
]}

Van Remortel, N. ^{[4
]}

Van Spilbeeck, A. ^{[4
]}

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, B-1348 Louvain, 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] Tech Univ Split, Split, Croatia

[20] Univ Split, Split, Croatia

[21] Rudjer Boskovic Inst, Zagreb, Croatia

[22] Univ Cyprus, 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, Gif Sur Yvette, France

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

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

[32] CNRS IN2P3, Ctr Calcul, Inst Natl Phys Nucl & Phys Particules, 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] Deutsches Elekt Synchrotron, 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] ATOMKI, Inst Nucl Res, 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：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 17期

基金：

巴西圣保罗研究基金会; 美国国家科学基金会; 芬兰科学院;

关键词：

Elementary particles - Germanium compounds - Tellurium compounds - Vanadium compounds;

D O I：

10.1103/PhysRevLett.112.171801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A search for the production of heavy partners of the top quark with charge 5/3 is performed in events with a pair of same-sign leptons. The data sample corresponds to an integrated luminosity of 19.5 fb(-1) and was collected at root s = 8 TeV by the CMS experiment. No significant excess is observed in the data above the expected background, and the existence of top-quark partners with masses below 800 GeV is excluded at a 95% confidence level, assuming they decay exclusively to tW. This is the first limit on these particles from the LHC, and it is significantly more restrictive than previous limits.

引用

页数：16

共 51 条

[21] Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states [J].

Chatrchyan, S. ;

Khachatryan, V. ;

Sirunyan, A. M. ;

Tumasyan, A. ;

Adam, W. ;

Bergauer, T. ;

Dragicevic, M. ;

Eroe, J. ;

Fabjan, C. ;

Friedl, M. ;

Fruehwirth, R. ;

Ghete, V. M. ;

Hartl, C. ;

Hoermann, N. ;

Hrubec, J. ;

Jeitler, M. ;

Kiesenhofer, W. ;

Knuenz, V. ;

Krammer, M. ;

Kraetschmer, I. ;

Liko, D. ;

Mikulec, I. ;

Rabady, D. ;

Rahbaran, B. ;

Rohringer, H. ;

Schoefbeck, R. ;

Strauss, J. ;

Taurok, A. ;

Treberer-Treberspurg, W. ;

Waltenberger, W. ;

Wulz, C. -E. ;

Mossolov, V. ;

Shumeiko, N. ;

Gonzalez, J. Suarez ;

Alderweireldt, S. ;

Bansal, M. ;

Bansal, S. ;

Cornelis, T. ;

De Wolf, E. A. ;

Janssen, X. ;

Knutsson, A. ;

Luyckx, S. ;

Mucibello, L. ;

Ochesanu, S. ;

Roland, B. ;

Rougny, R. ;

Van Haevermaet, H. ;

Van Mechelen, P. ;

Van Remortel, N. ;

Van Spilbeeck, A. .

JOURNAL OF HIGH ENERGY PHYSICS, 2014, (01)

[22] Searches for new physics using the t(t)over-bar invariant mass distribution in pp collisions at √s=8 TeV [J].

Chatrchyan, S. ;

Khachatryan, V. ;

Sirunyan, A. M. ;

Tumasyan, A. ;

Adam, W. ;

Bergauer, T. ;

Dragicevic, M. ;

Eroe, J. ;

Fabjan, C. ;

Friedl, M. ;

Fruehwirth, R. ;

Ghete, V. M. ;

Hoermann, N. ;

Hrubec, J. ;

Jeitler, M. ;

Kiesenhofer, W. ;

Knuenz, V. ;

Krammer, M. ;

Kraetschmer, I. ;

Liko, D. ;

Mikulec, I. ;

Rabady, D. ;

Rahbaran, B. ;

Rohringer, C. ;

Rohringer, H. ;

Schoefbeck, R. ;

Strauss, J. ;

Taurok, A. ;

Treberer-Treberspurg, W. ;

Waltenberger, W. ;

Wulz, C-E ;

Mossolov, V. ;

Shumeiko, N. ;

Gonzalez, J. Suarez ;

Alderweireldt, S. ;

Bansal, M. ;

Bansal, S. ;

Cornelis, T. ;

De Wolf, E. A. ;

Janssen, X. ;

Knutsson, A. ;

Luyckx, S. ;

Mucibello, L. ;

Ochesanu, S. ;

Roland, B. ;

Rougny, R. ;

Staykova, Z. ;

Van Haevermaet, H. ;

Van Mechelen, P. ;

Van Remortel, N. .

PHYSICAL REVIEW LETTERS, 2013, 111 (21)

[23]

Chatrchyan S, 2012, J HIGH ENERGY PHYS, DOI 10.1007/JHEP08(2012)110

[24]

Chatrchyan S, 2013, J HIGH ENERGY PHYS, DOI 10.1007/JHEP03(2013)037

[25] Study of the Mass and Spin-Parity of the Higgs Boson Candidate via Its Decays to Z Boson Pairs [J].

Chatrchyan, S. ;

Khachatryan, V. ;

Sirunyan, A. M. ;

Tumasyan, A. ;

Adam, W. ;

Aguilo, E. ;

Bergauer, T. ;

Dragicevic, M. ;

Eroe, J. ;

Fabjan, C. ;

Friedl, M. ;

Fruehwirth, R. ;

Ghete, V. M. ;

Hoermann, N. ;

Hrubec, J. ;

Jeitler, M. ;

Kiesenhofer, W. ;

Knuenz, V. ;

Krammer, M. ;

Kraetschmer, I. ;

Liko, D. ;

Mikulec, I. ;

Pernicka, M. ;

Rabady, D. ;

Rahbaran, B. ;

Rohringer, C. ;

Rohringer, H. ;

Schoefbeck, R. ;

Strauss, J. ;

Taurok, A. ;

Waltenberger, W. ;

Wulz, C. -E. ;

Mossolov, V. ;

Shumeiko, N. ;

Gonzalez, J. Suarez ;

Alderweireldt, S. ;

Bansal, M. ;

Bansal, S. ;

Cornelis, T. ;

De Wolf, E. A. ;

Janssen, X. ;

Luyckx, S. ;

Mucibello, L. ;

Ochesanu, S. ;

Roland, B. ;

Rougny, R. ;

Van Haevermaet, H. ;

Van Mechelen, P. ;

Van Remortel, N. ;

Van Spilbeeck, A. .

PHYSICAL REVIEW LETTERS, 2013, 110 (08)

[26] Determination of jet energy calibration and transverse momentum resolution in CMS [J].

Chatrchyan, S. ;

Khachatryan, V. ;

Sirunyan, A. M. ;

Tumasyan, A. ;

Adam, W. ;

Bergauer, T. ;

Dragicevic, M. ;

Ero, J. ;

Fabjan, C. ;

Friedl, M. ;

Fruhwirth, R. ;

Ghete, V. M. ;

Hammer, J. ;

Hansel, S. ;

Hoch, M. ;

Hormann, N. ;

Hrubec, J. ;

Jeitler, M. ;

Kiesenhofer, W. ;

Krammer, M. ;

Liko, D. ;

Mikulec, I. ;

Pernicka, M. ;

Rahbaran, B. ;

Rohringer, H. ;

Schofbeck, R. ;

Strauss, J. ;

Taurok, A. ;

Teischinger, F. ;

Wagner, P. ;

Waltenberger, W. ;

Walzel, G. ;

Widl, E. ;

Wulz, C. E. ;

Mossolov, V. ;

Shumeiko, N. ;

Suarez Gonzalez, J. ;

Bansal, S. ;

Benucci, L. ;

De Wolf, E. A. ;

Janssen, X. ;

Maes, T. ;

Mucibello, L. ;

Ochesanu, S. ;

Roland, B. ;

Rougny, R. ;

Selvaggi, M. ;

Van Haevermaet, H. ;

Van Mechelen, P. ;

Van Remortel, N. .

JOURNAL OF INSTRUMENTATION, 2011, 6

[27]

Chatrchyan S, 2011, J HIGH ENERGY PHYS, DOI 10.1007/JHEP10(2011)132

[28]

Chatrchyan S, 2011, J HIGH ENERGY PHYS, DOI 10.1007/JHEP09(2011)109

[29] Search for new physics with same-sign isolated dilepton events with jets and missing transverse energy at the LHC [J].

Chatrchyan, S. ;

Khachatryan, V. ;

Sirunyan, A. M. ;

Tumasyan, A. ;

Adam, W. ;

Bergauer, T. ;

Dragicevic, M. ;

Eroe, J. ;

Fabjan, C. ;

Friedl, M. ;

Fruehwirth, R. ;

Ghete, V. M. ;

Hammer, J. ;

Haensel, S. ;

Hoch, M. ;

Hoermann, N. ;

Hrubec, J. ;

Jeitler, M. ;

Kasieczka, G. ;

Kiesenhofer, W. ;

Krammer, M. ;

Liko, D. ;

Mikulec, I. ;

Pernicka, M. ;

Rohringer, H. ;

Schoefbeck, R. ;

Strauss, J. ;

Teischinger, F. ;

Wagner, P. ;

Waltenberger, W. ;

Walzel, G. ;

Widl, E. ;

Wulz, C. -E. ;

Mossolov, V. ;

Shumeiko, N. ;

Gonzalez, J. Suarez ;

Benucci, L. ;

De Wolf, E. A. ;

Janssen, X. ;

Maes, T. ;

Mucibello, L. ;

Ochesanu, S. ;

Roland, B. ;

Rougny, R. ;

Selvaggi, M. ;

Van Haevermaet, H. ;

Van Mechelen, P. ;

Van Remortel, N. ;

Blekman, F. ;

Blyweert, S. .

JOURNAL OF HIGH ENERGY PHYSICS, 2011, (06)

[30] The CMS experiment at the CERN LHC [J].

Chatrchyan, S. ;

Hmayakyan, G. ;

Khachatryan, V. ;

Sirunyan, A. M. ;

Adam, W. ;

Bauer, T. ;

Bergauer, T. ;

Bergauer, H. ;

Dragicevic, M. ;

Eroe, J. ;

Friedl, M. ;

Fruehwirth, R. ;

Ghete, V. M. ;

Glaser, P. ;

Hartl, C. ;

Hoermann, N. ;

Hrubec, J. ;

Haensel, S. ;

Jeitler, M. ;

Kastner, K. ;

Krammer, M. ;

de Abril, I. Magrans ;

Markytan, M. ;

Mikulec, I. ;

Neuherz, B. ;

Noebauer, T. ;

Oberegger, M. ;

Padrta, M. ;

Pernicka, M. ;

Porth, P. ;

Rohringer, H. ;

Schmid, S. ;

Schreiner, T. ;

Stark, R. ;

Steininger, H. ;

Strauss, J. ;

Taurok, A. ;

Uhl, D. ;

Waltenberger, W. ;

Walzel, G. ;

Widl, E. ;

Wulz, C. -E. ;

Petrov, V. ;

Prosolovich, V. ;

Chekhovsky, V. ;

Dvornikov, O. ;

Emeliantchik, I. ;

Litomin, A. ;

Makarenko, V. ;

Marfin, I. .

JOURNAL OF INSTRUMENTATION, 2008, 3

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