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Measurement of the tt production cross section and the top quark mass in the dilepton channel in pp collisions at √s = 7 TeV

Chatrchyan, S. and Apresyan, A. and Bornheim, A. and Bunn, J. and Chen, Y. and Gataullin, M. and Ma, Y. and Mott, A. and Newman, H. B. and Rogan, C. and Shin, K. and Timciuc, V. and Traczyk, P. and Veverka, J. and Wilkinson, R. and Yang, Y. and Zhu, R. Y. and Dubinin, M. and Spiropulu, M. (2011) Measurement of the tt production cross section and the top quark mass in the dilepton channel in pp collisions at √s = 7 TeV. Journal of High Energy Physics, 2011 (7). Art. No. 049. ISSN 1126-6708. http://resolver.caltech.edu/CaltechAUTHORS:20111011-075812238

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Abstract

The tt production cross section and top quark mass are measured in proton-proton collisions at √s=7 TeV in a data sample corresponding to an integrated luminosity of 36 pb^(−1) collected by the CMS experiment. The measurements are performed in events with two leptons (electrons or muons) in the final state. Results of the cross section measurement in events with and without b-quark identification are obtained and combined. The measured value is σ_(tt) = 168 ± 18 (stat.) ± 14 (syst.) ± 7 (lumi.) pb, consistent with predictions from the standard model. The top quark mass m_(top) is reconstructed with two different methods, a full kinematic analysis and a matrix weighting technique. The combination yields a measurement of m_(top) = 175.5 ± 4.6 (stat.) ± 4.6 (syst.) GeV/c^2.


Item Type:Article
Related URLs:
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http://dx.doi.org/10.1007/JHEP07(2011)049 DOIUNSPECIFIED
http://www.springerlink.com/content/0810832l7t760h73/PublisherUNSPECIFIED
Additional Information:© 2011 CERN, for the benefit of the CMS Collaboration. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. Received: May 28, 2011. Accepted: June 16, 2011. Published: July 11, 2011. We wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes. This work was supported by the Austrian Federal Ministry of Science and Research; the Belgium Fonds de la Recherche Scientifique, and Fonds voor Wetenschappelijk Onderzoek; the Brazilian Funding Agencies (CNPq, CAPES, FAPERJ, and FAPESP); the Bulgarian Ministry of Education and Science; CERN; the Chinese Academy of Sciences, Ministry of Science and Technology, and National Natural Science Foundation of China; the Colombian Funding Agency (COLCIENCIAS); the Croatian Ministry of Science, Education and Sport; the Research Promotion Foundation, Cyprus; the Estonian Academy of Sciences and NICPB; the Academy of Finland, Finnish Ministry of Education and Culture, and Helsinki Institute of Physics; the Institut National de Physique Nucleaire et de Physique des Particules / CNRS, and Commissariat à l'Énergie Atomique et aux Énergies Alternatives / CEA, France; the Bundesministerium für Bildung und Forschung, Deutsche Forschungsgemeinschaft, and Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany; the General Secretariat for Research and Technology, Greece; the National Scientic Research Foundation, and National Office for Research and Technology, Hungary; the Department of Atomic Energy and the Department of Science and Technology, India; the Institute for Studies in Theoretical Physics and Mathematics, Iran; the Science Foundation, Ireland; the Istituto Nazionale di Fisica Nucleare, Italy; the Korean Ministry of Education, Science and Technology and the World Class University program of NRF, Korea; the Lithuanian Academy of Sciences; the Mexican Funding Agencies (CINVESTAV, CONACYT, SEP, and UASLP-FAI); the Ministry of Science and Innovation, New Zealand; the Pakistan Atomic Energy Commission; the State Commission for Scientific Research, Poland; the Fundação para a Ciência e a Tecnologia, Portugal; JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); the Ministry of Science and Technologies of the Russian Federation, and Russian Ministry of Atomic Energy; the Ministry of Science and Technological Development of Serbia; the Ministerio de Ciencia e Innovaciόn, and Programa Consolider-Ingenio 2010, Spain; the Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER); the National Science Council, Taipei; the Scientific and Technical Research Council of Turkey, and Turkish Atomic Energy Authority; the Science and Technology Facilities Council, UK; the US Department of Energy, and the US National Science Foundation. Individuals have received support from the Marie-Curie programme and the European Research Council (European Union); the Leventis Foundation; the A. P. Sloan Foundation; the Alexander von Humboldt Foundation; the Associazione per lo Sviluppo Scientifico e Tecnologico del Piemonte (Italy); the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); and the Council of Science and Industrial Research, India.
Group:CMS@Caltech
Funders:
Funding AgencyGrant Number
Austrian Federal Ministry of Science and ResearchUNSPECIFIED
Belgium Fonds de la Recherche Scientifique UNSPECIFIED
Fonds voor Wetenschappelijk Onderzoek UNSPECIFIED
CNPq (Brazil)UNSPECIFIED
CAPES (Brazil)UNSPECIFIED
FAPERJ (Brazil)UNSPECIFIED
FAPESP (Brazil)UNSPECIFIED
Bulgarian Ministry of Education and ScienceUNSPECIFIED
CERNUNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
Ministry of Science and Technology UNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
COLCIENCIAS (Colombia)UNSPECIFIED
Croatian Ministry of Science, Education and Sport UNSPECIFIED
Research Promotion Foundation, Cyprus UNSPECIFIED
Estonian Academy of Sciences and NICPB UNSPECIFIED
Academy of FinlandUNSPECIFIED
Finish Ministry of Education and Helsinki Institute of PhysicsUNSPECIFIED
Institut National de Physique Nucleaire et de Physique des Particules (CNRS)UNSPECIFIED
Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA) France UNSPECIFIED
Bundesministerium für Bildung und ForschungUNSPECIFIED
Deutsche ForschungsgemeinschaftUNSPECIFIED
Helmholtz-Gemeinschaft Deutscher Forschungszentren (Germany)UNSPECIFIED
General Secretariat for Research and Technology (Greece)UNSPECIFIED
National Scientific Research Foundation UNSPECIFIED
National Office for Research and Technology, Hungary UNSPECIFIED
Department of Atomic Energy (India)UNSPECIFIED
Department of Science and Technology of IndiaUNSPECIFIED
Institute for Studies in Theoretical Physics and Mathematics, Iran UNSPECIFIED
Science Foundation IrelandUNSPECIFIED
Istituto Nazionale di Fisica Nucleare (Italy)UNSPECIFIED
Korean Ministry of Education, Science and Technology UNSPECIFIED
World Class University program of NRF (Korea) UNSPECIFIED
Lithuanian Academy of Sciences UNSPECIFIED
CINVESTAV (Mexico)UNSPECIFIED
CONACyT (Mexico)UNSPECIFIED
SEP and UASLP-FAI (Mexico)UNSPECIFIED
Ministry of Science and Innovation, New ZealandUNSPECIFIED
Pakistan Atomic Energy CommissionUNSPECIFIED
State Commission for Scientific Research (Poland)UNSPECIFIED
Fundação para a Ciência e a Tecnologia (Portugal)UNSPECIFIED
JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan)UNSPECIFIED
Ministry of Science and Technological Development of SerbiaUNSPECIFIED
Ministerio de Ciencia e Innovación and Programa Consolider-Ingenio 2010, SpainUNSPECIFIED
Swiss Funding Agencies (Switzerland)UNSPECIFIED
ETH Board UNSPECIFIED
ETH Zurich UNSPECIFIED
PSIUNSPECIFIED
SNFUNSPECIFIED
UniZH UNSPECIFIED
Canton Zurich UNSPECIFIED
SERUNSPECIFIED
National Science Council, Taipei UNSPECIFIED
Scientific and Technical Research Council of TurkeyUNSPECIFIED
Turkish Atomic Energy Authority UNSPECIFIED
Science and Technology Facilities Council (UK)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Subject Keywords:Hadron-Hadron Scattering
Record Number:CaltechAUTHORS:20111011-075812238
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20111011-075812238
Official Citation:Measurement of the tt production cross section and the top quark mass in the dilepton channel in pp collisions at s=7 TeV The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan and A. Tumasyan, et al.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:27151
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:11 Oct 2011 16:43
Last Modified:17 Dec 2014 23:18

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