Artigo
Search for new physics in events with same-sign dileptons and b-tagged jets in pp collisions at √ s = 7TeV
Fecha
2012-09-12Registro en:
Journal of High Energy Physics, v. 2012, n. 8, 2012.
1126-6708
1029-8479
10.1007/JHEP08(2012)110
2-s2.0-84865837728
2-s2.0-84865837728.pdf
Autor
Yerevan Physics Institute
Institut für Hochenergiephysik der OeAW
National Centre for Particle and High Energy Physics
Universiteit Antwerpen
Vrije Universiteit Brussel
Université Libre de Bruxelles
Ghent University
Université Catholique de Louvain
Université de Mons
Centro Brasileiro de Pesquisas Físicas (CBPF)
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Estadual Paulista (Unesp)
Institute for Nuclear Research and Nuclear Energy
University of Sofia
Institute of High Energy Physics
Peking University
Universidad de los Andes
Technical University of Split
University of Split
Institute Rudjer Boskovic
University of Cyprus
Charles University
Egyptian Network of High Energy Physics
National Institute of Chemical Physics and Biophysics
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
CEA/Saclay
IN2P3-CNRS
Univer-sité de Haute Alsace Mulhouse
Centre de Calcul de l'Institut National de Physique Nucleaire et de Physique des Particules (IN2P3)
Institut de Physique Nucleáire de Lyon
Tbilisi State University
I. Physikalisches Institut
III. Physikalisches Institut A
III. Physikalisches Institut B
Deutsches Elektronen-Synchrotron
University of Hamburg
Institut für Experimentelle Kernphysik
Institute of Nuclear Physics Demokritos
University of Athens
University of Ioańnina
KFKI Research Institute for Particle and Nuclear Physics
Institute of Nuclear Research ATOMKI
University of Debrecen
Panjab University
University of Delhi
Saha Institute of Nuclear Physics
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research - EHEP
Tata Institute of Fundamental Research - HECR
Institute for Research in Fundamental Sciences (IPM)
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Benemerita Universidad Autonoma de Puebla
Universidad Autońoma de San Luis Potosí
University of Auckland
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Quaid-I-Azam University
University of Warsaw
Soltan Institute for Nuclear Studies
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Vinca Institute of Nuclear Sciences
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Faculty of Physics
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Resumen
A search for new physics is performed using isolated same-sign dileptons with at least two b-quark jets in the final state. Results are based on a 4.98 fb -1 sample of protonproton collisions at a centre-of-mass energy of 7TeV collected by the CMS detector. No excess above the standard model background is observed. Upper limits at 95% confidence level are set on the number of events from non-standard-model sources. These limits are used to set constraints on a number of new physics models. Information on acceptance and efficiencies are also provided so that the results can be used to confront additional models in an approximate way. © 2012 SISSA.