(CMS Collaboration) Chatrchyan, S.; Brigljević, Vuko; Đurić, Senka; Kadija, Krešo; Morović, Srećko (2011) Measurement of the tt̅ production cross section in pp collisions at 7 TeV in lepton+jets events using b-quark jet identification. Physical Review D, 84 (9). 092004/1-092004/24. ISSN 1550-7998
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Abstract
A new measurement of the inclusive production cross section for pp -> t (t) over bar 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 t (t) over bar 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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| Uncontrolled Keywords: | top-quark | ||||||||
| Subjects: | NATURAL SCIENCES > Physics NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields NATURAL SCIENCES > Physics > Astronomy and Astrophysics |
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| Divisions: | Division of Experimental Physics | ||||||||
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| Depositing User: | Krešo Kadija | ||||||||
| Date Deposited: | 19 Sep 2013 08:50 | ||||||||
| URI: | http://fulir.irb.hr/id/eprint/624 | ||||||||
| DOI: | 10.1103/PhysRevD.84.092004 |
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