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Measurement of the tt production cross section in pp collisions at 7 TeV in lepton + jets events using b-quark jet identification

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 Spiropulu, M. and Dubinin, M. (2011) Measurement of the tt production cross section in pp collisions at 7 TeV in lepton + jets events using b-quark jet identification. Physical Review D, 84 (9). Art. No. 092004. ISSN 2470-0010. http://resolver.caltech.edu/CaltechAUTHORS:20120201-142806383

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Abstract

A new measurement of the inclusive production cross section for pp→tt̅ is performed at a center-of-mass energy of 7 TeV using data collected by the CMS experiment at the LHC. The analysis uses a data sample corresponding to an integrated luminosity of 36  pb-1, and is based on the final state with one isolated, high transverse momentum muon or electron, missing transverse energy, and hadronic jets. The tt̅ content of the selected events is enhanced by requiring the presence of at least one jet consistent with b-quark hadronization. The measured cross section is 150±9(stat)±17(syst)±6(lumi)  pb and is in agreement with higher-order QCD calculations. The combination of this measurement with a previous CMS result based on dileptons gives 154±17(stat+syst)±6(lumi)  pb.


Item Type:Article
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http://dx.doi.org/10.1103/PhysRevD.84.092004DOIUNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevD.84.092004PublisherUNSPECIFIED
http://prd.aps.org/abstract/PRD/v84/i9/e092004PublisherUNSPECIFIED
Additional Information:© 2011 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 17 August 2011; published 14 November 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, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTDS (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie IEF program (European Union); the Leventis Foundation; the A. P. Sloan Foundation; the Alexander von Humboldt Foundation; and the World Class University program by NRF (Korea).
Group:CMS@Caltech
Funders:
Funding AgencyGrant Number
FMSR (Austria)UNSPECIFIED
FNRS and FWO (Belgium) UNSPECIFIED
CNPq (Brazil)UNSPECIFIED
CAPES (Brazil)UNSPECIFIED
FAPERJ (Brazil)UNSPECIFIED
FAPESP (Brazil)UNSPECIFIED
MES (Bulgaria)UNSPECIFIED
CERNUNSPECIFIED
CASUNSPECIFIED
MoST (China)UNSPECIFIED
NSFC (China)UNSPECIFIED
COLCIENCIAS (Colombia)UNSPECIFIED
MSES (Croatia)UNSPECIFIED
RPF (Cyprus) UNSPECIFIED
Academy of Sciences and NICPB (Estonia) UNSPECIFIED
Academy of FinlandUNSPECIFIED
ME (Finland)UNSPECIFIED
HIP (Finland)UNSPECIFIED
CEA and CNRS/IN2P3 (France)UNSPECIFIED
BMBF (Germany)UNSPECIFIED
DFG and HGF (Germany)UNSPECIFIED
GSRT (Greece)UNSPECIFIED
OTKA and NKTH (Hungary) UNSPECIFIED
DAE and DST (India) UNSPECIFIED
IPM (Iran)UNSPECIFIED
SFI (Ireland)UNSPECIFIED
INFN (Italy)UNSPECIFIED
NRF (Korea)UNSPECIFIED
LAS (Lithuania)UNSPECIFIED
CINVESTAV (Mexico)UNSPECIFIED
CONACyT (Mexico)UNSPECIFIED
SEP and UASLP-FAI (Mexico)UNSPECIFIED
PAEC (Pakistan)UNSPECIFIED
SCSR (Poland)UNSPECIFIED
FCT (Portugal)UNSPECIFIED
JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan)UNSPECIFIED
MST and MAE (Russia) UNSPECIFIED
MSTDS (Serbia)UNSPECIFIED
MICINN and CPAN (Spain) UNSPECIFIED
Swiss Funding Agencies (Switzerland)UNSPECIFIED
NSC (Taipei)UNSPECIFIED
TUBITAK and TAEK (Turkey) UNSPECIFIED
STFC (United Kingdom)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Leventis Foundation UNSPECIFIED
A.P. Sloan FoundationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
World Class University program of NRF (Korea) UNSPECIFIED
Issue or Number:9
Classification Code:PACS: 14.65.Ha, 12.60.Cn, 12.15.Lk
Record Number:CaltechAUTHORS:20120201-142806383
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120201-142806383
Official Citation:Measurement of the tt̅ production cross section in pp collisions at 7 TeV in lepton+jets events using b-quark jet identification S. Chatrchyan et al. (CMS Collaboration) Published 14 November 2011 (24 pages) 092004
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:29073
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:01 Feb 2012 23:20
Last Modified:06 Sep 2019 22:13

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