Measurement of the W -> tau nu(tau) cross section in pp collisions at root s=7 TeV with the ATLAS experiment


Aad G., Abbott B., Abdallah J., Abdelalim A. A. , Abdesselam A., Abdinov O., ...More

PHYSICS LETTERS B, vol.706, pp.276-294, 2012 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 706
  • Publication Date: 2012
  • Doi Number: 10.1016/j.physletb.2011.11.057
  • Title of Journal : PHYSICS LETTERS B
  • Page Numbers: pp.276-294

Abstract

The cross section for the production of W bosons with subsequent decay W -> tau nu(tau) is measured with the ATLAS detector at the LHC. The analysis is based on a data sample that was recorded in 2010 at a proton-proton center-of-mass energy of root s = 7 TeV and corresponds to an integrated luminosity of 34 pb(-1). The cross section is measured in a region of high detector acceptance and then extrapolated to the full phase space. The product of the total W production cross section and the W -> tau nu(tau) branching ratio is measured to be sigma(tot)(W -> tau nu tau) = 11.1 +/- 0.3 (stat) +/- 1.7 (syst) +/- 0.4 (lumi) nb. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.