hrvatski jezikClear Cookie - decide language by browser settings

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

(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

[img]
Preview
PDF - Published Version
Available under License Creative Commons Attribution.

Download (802kB) | Preview
[img]
Preview
PDF - Accepted Version
Available under License Creative Commons Attribution.

Download (694kB) | Preview

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
Uncontrolled Keywords: top-quark
Subjects: NATURAL SCIENCES > Physics
NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
NATURAL SCIENCES > Physics > Astronomy and Astrophysics
Divisions: Division of Experimental Physics
Projects:
Project titleProject leaderProject codeProject type
Eksperimentalna fizika na LHC energijama[93132] Krešo Kadija098-0982887-2878MZOS
Depositing User: Krešo Kadija
Date Deposited: 19 Sep 2013 08:50
Last Modified: 03 Feb 2016 15:09
URI: http://fulir.irb.hr/id/eprint/624
DOI: 10.1103/PhysRevD.84.092004

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year