Home > Research > Publications & Outputs > Measurement of the cross section for the produc...

Electronic data

  • 1-s2.0-S0370269311015036-main

    Rights statement: This article is published Open Access at sciencedirect.com. It is distributed under the terms of the Creative Commons Attribution License 3.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited.

    Final published version, 1.15 MB, PDF document

    Available under license: CC BY

Links

Text available via DOI:

View graph of relations

Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at root s=7 TeV with the ATLAS detector

Research output: Contribution to journalJournal article

Published
  • The ATLAS collaboration
Close
<mark>Journal publication date</mark>7/02/2012
<mark>Journal</mark>Physics Letters B
Issue number5
Volume707
Number of pages20
Pages (from-to)418-437
Publication StatusPublished
<mark>Original language</mark>English

Abstract

A measurement is presented of the cross section for the production of a W boson with one or two jets, of which at least one must be a b-jet, in pp collisions at root s = 7 TeV. Production via top decay is not included in the signal definition. The measurement is based on 35 pb(-1) of data collected with the ATLAS detector at the LHC. The W + b-jet cross section is defined for jets reconstructed with the anti-k(t) clustering algorithm with transverse momentum above 25 GeV and rapidity within +/-2.1. The b-jets are identified by reconstructing secondary vertices. The fiducial cross section is measured both for the electron and muon decay channel of the W boson and is found to be 10.2 +/- 1.9(stat) +/- 2.6(syst) pb for one lepton flavour. The results are compared with next-to-leading order QCD calculations, which predict a cross section smaller than, though consistent with, the measured value.

Bibliographic note

This article is published Open Access at sciencedirect.com. It is distributed under the terms of the Creative Commons Attribution License 3.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited.