Search for same-sign top-quark pair production at √s = 7 TeV and limits on avour changing neutral currents in the top sector

The CMS collaboration

doi:10.1007/JHEP08(2011)005

Search for same-sign top-quark pair production at √s = 7 TeV and limits on avour changing neutral currents in the top sector

The CMS collaboration

Yerevan Physics Institute
Institut für Hochenergiephysik der OeAW
CERN
Belarusian State University
University of Antwerp
Boston University
Vrije Universiteit Brussel
Université Libre de Bruxelles
Ghent University
Université catholique de Louvain
Université de Mons
Centro Brasileiro de Pesquisas Fisicas
Universidade do Estado do Rio de Janeiro
Universidade Federal do ABC
Universidade Estadual Paulista Júlio de Mesquita Filho
Bulgarian Academy of Sciences
University of Sofia
Institute of High Energy Physics Chinese Academy of Science
Peking University
Universidad de los Andes Colombia
Technical University of Split
IN2P3-CNRS
Institute Rudjer Boskovic
University of Cyprus
Charles University
Suez Canal University
Egyptian Network of High Energy Physics
British University
Fayoum University
National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
IN2P3-CNRS
CEA/Saclay
Soltan Institute for Nuclear Studies
Massachusetts Institute of Technology
Université de Haute-Alsace
Université de Strasbourg
Universite Claude Bernard Lyon 1
Tbilisi State University
RWTH Aachen University
Deutsches Elektronen-Synchrotron (DESY)
Brandenburg University of Technology
Lomonosov Moscow State University
University of Hamburg
Karlsruhe Institute of Technology
Institute of Nuclear Physics “Demokritos”
National and Kapodistrian University of Athens
University of Ioannina
KFKI Research Institute for Particle and Nuclear Physics
Institute for Nuclear Research
Eötvös Loránd University
University of Debrecen
Panjab University
University of Delhi
Saha Institute of Nuclear Physics
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research, Mumbai
Visva-Bharati University
Institute for Studies in Theoretical Physics and Mathematics, Tehran
Sharif University of Technology
Shiraz University
Isfahan University of Technology
INFN Sezione di Bari
Université di Bari
Polytechnic University of Bari
INFN Sezione di Bologna
University of Bologna
National Institute for Nuclear Physics
University of Catania
INFN Sezione di Firenze
University of Florence
Université di Roma La Sapienza
INFN Sezione di Milano-Bicocca
Université di Milano-Bicocca
INFN Sezione di Napoli
Université della Basilicata
University of Naples Federico II
INFN Sezione di Padova
University of Padua
Laboratori Nazionali di Legnaro
University of Trento
INFN Sezione di Pavia
Université di Pavia
INFN Sezione di Perugia
Université di Perugia
INFN Sezione di Pisa
Scuola Normale Superiore di Pisa
University of Pisa
University of Belgrade
INFN Sezione di Torino
Université di Torino
University of Eastern Piedmont
INFN Sezione di Trieste
Université di Trieste
Kangwon National University
Kyungpook National University
Chonnam National University
Korea University
University of Seoul
Sungkyunkwan University
Vilnius University
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
Universidad Iberoamericana (UIA)
Benemerita Universidad Autonoma de Puebla
Universidad Autónoma de San Luis Potosí
University of Auckland
University of Canterbury
Quaid-I-Azam University
University of Warsaw
Laboratório de Instrumentação e Fisica Experimental de Partículas
Joint Institute for Nuclear Research, Dubna
Petersburg Nuclear Physics Institute (PNPI)
RAS - Institute for Nuclear Research
Institute for Theoretical and Experimental Physics
California Institute of Technology
RAS - P.N. Lebedev Physics Institute
Institute for High Energy Physics
University of Belgrade
CIEMAT
Universidad Autónoma de Madrid
University of Oviedo
CSIC-Universidad de Cantabria
University of California at Los Angeles
University of Florida
Université de Genève
Paul Scherrer Institut
University of Kansas
ETH Zurich
University of Zurich
National Central University
National Taiwan University
Cukurova University
Gaziosmanpasa University
Adiyaman University
University of Iowa
Mersin University
Middle East Technical University (METU)
Bogazici University
Izmir Institute of Technology
Kafkas University
Suleyman Demirel University
Ege University
NASU - Kharkov Institute of Physics and Technology
University of Bristol
Rutherford Appleton Laboratory
University of Southampton
Imperial College London
Brunel University London
Baylor University
University of Alabama
Brown University
University of California, Davis
University of California at Riverside
University of California at San Diego
Utah Valley University
University of California at Santa Barbara
Carnegie Mellon University
University of Colorado at Boulder
Cornell University
Fairfield University
Fermi National Accelerator Laboratory
Florida International University
Florida State University
Florida Institute of Technology
University of Illinois at Chicago
Los Alamos National Laboratory
Erzincan University
Johns Hopkins University
Kansas State University
Lawrence Livermore National Laboratory
University of Maryland, College Park
University of Minnesota-Twin Cities
University of Mississippi
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Northeastern University
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Wayne State University
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46 Citas (Scopus)

Resumen

An inclusive search for same-sign top-quark pair production in pp collisions at √s = 7TeV is performed using a data sample recorded with the CMS detector in 2010, corresponding to an integrated luminosity of 35 pb ^-1. This analysis is motivated by recent studies of pp → tt reporting mass-dependent forward-backward asymmetries larger than expected from the standard model. These asymmetries could be due to Flavor Changing Neutral Currents (FCNC) in the top sector induced by t-channel exchange of a massive neutral vector boson (Z'). Models with such a Z' also predict enhancement of same-sign top-pair production in pp or pp collisions. Limits are set as a function of the Z' mass and its couplings to u and t quarks. These limits disfavour the FCNC interpretation of the Tevatron results.

Idioma original	Inglés
Número de artículo	5
Publicación	Journal of High Energy Physics
Volumen	2011
N.º	8
DOI	https://doi.org/10.1007/JHEP08(2011)005
Estado	Publicada - 2011
Publicado de forma externa	Sí

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10.1007/JHEP08(2011)005

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title = "Search for same-sign top-quark pair production at √s = 7 TeV and limits on avour changing neutral currents in the top sector",

abstract = "An inclusive search for same-sign top-quark pair production in pp collisions at √s = 7TeV is performed using a data sample recorded with the CMS detector in 2010, corresponding to an integrated luminosity of 35 pb -1. This analysis is motivated by recent studies of pp → tt reporting mass-dependent forward-backward asymmetries larger than expected from the standard model. These asymmetries could be due to Flavor Changing Neutral Currents (FCNC) in the top sector induced by t-channel exchange of a massive neutral vector boson (Z'). Models with such a Z' also predict enhancement of same-sign top-pair production in pp or pp collisions. Limits are set as a function of the Z' mass and its couplings to u and t quarks. These limits disfavour the FCNC interpretation of the Tevatron results.",

keywords = "Hadron-Hadron Scattering",

author = "\{The CMS collaboration\} and S. Chatrchyan and V. Khachatryan and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and T. Bergauer and M. Dragicevic and J. Er{\"o} and C. Fabjan and M. Friedl and R. Fr{\"u}hwirth and Ghete, \{V. M.\} and J. Hammer and S. H{\"a}nsel and M. Hoch and N. H{\"o}rmann and J. Hrubec and M. Jeitler and W. Kiesenhofer and M. Krammer and D. Liko and I. Mikulec and M. Pernicka and B. Rahbaran and H. Rohringer and R. Sch{\"o}fbeck and J. Strauss and A. Taurok and F. Teischinger and P. Wagner and W. Waltenberger and G. Walzel and E. Widl and Wulz, \{C. E.\} and V. Mossolov and N. Shumeiko and \{Suarez Gonzalez\}, J. and S. Bansal and L. Benucci and \{De Wolf\}, \{E. A.\} and X. Janssen and T. Maes and L. Mucibello and S. Ochesanu and B. Roland and R. Rougny and M. Selvaggi and \{Van Haevermaet\}, H. and \{Van Mechelen\}, P. and \{Carrera Jarrin\}, E.",

year = "2011",

doi = "10.1007/JHEP08(2011)005",

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volume = "2011",

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AU - The CMS collaboration

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AU - Khachatryan, V.

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Bergauer, T.

AU - Dragicevic, M.

AU - Erö, J.

AU - Fabjan, C.

AU - Friedl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hammer, J.

AU - Hänsel, S.

AU - Hoch, M.

AU - Hörmann, N.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Kiesenhofer, W.

AU - Krammer, M.

AU - Liko, D.

AU - Mikulec, I.

AU - Pernicka, M.

AU - Rahbaran, B.

AU - Rohringer, H.

AU - Schöfbeck, R.

AU - Strauss, J.

AU - Taurok, A.

AU - Teischinger, F.

AU - Wagner, P.

AU - Waltenberger, W.

AU - Walzel, G.

AU - Widl, E.

AU - Wulz, C. E.

AU - Mossolov, V.

AU - Shumeiko, N.

AU - Suarez Gonzalez, J.

AU - Bansal, S.

AU - Benucci, L.

AU - De Wolf, E. A.

AU - Janssen, X.

AU - Maes, T.

AU - Mucibello, L.

AU - Ochesanu, S.

AU - Roland, B.

AU - Rougny, R.

AU - Selvaggi, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Carrera Jarrin, E.

PY - 2011

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AB - An inclusive search for same-sign top-quark pair production in pp collisions at √s = 7TeV is performed using a data sample recorded with the CMS detector in 2010, corresponding to an integrated luminosity of 35 pb -1. This analysis is motivated by recent studies of pp → tt reporting mass-dependent forward-backward asymmetries larger than expected from the standard model. These asymmetries could be due to Flavor Changing Neutral Currents (FCNC) in the top sector induced by t-channel exchange of a massive neutral vector boson (Z'). Models with such a Z' also predict enhancement of same-sign top-pair production in pp or pp collisions. Limits are set as a function of the Z' mass and its couplings to u and t quarks. These limits disfavour the FCNC interpretation of the Tevatron results.

KW - Hadron-Hadron Scattering

UR - https://www.scopus.com/pages/publications/80053159756

U2 - 10.1007/JHEP08(2011)005

DO - 10.1007/JHEP08(2011)005

M3 - Artículo

AN - SCOPUS:80053159756

SN - 1126-6708

VL - 2011

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 8

M1 - 5

ER -

Search for same-sign top-quark pair production at √s = 7 TeV and limits on avour changing neutral currents in the top sector

Resumen

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