Measurement of the production cross section for <em>W</em>-bosons in association with jets in <em>pp</em> collisions at √s=7 TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1016/j.physletb.2011.03.012

Scientific article

English

Measurement of the production cross section for W-bosons in association with jets in pp collisions at √s=7 TeV with the ATLAS detector

Contributors

ATLAS Collaboration

Published in

Physics letters. B, vol. 698, no. 5, p. 325-345

Publication date

2011

Abstract

This Letter reports on a first measurement of the inclusive W+jets cross section in proton–proton collisions at a centre-of-mass energy of 7 TeV at the LHC, with the ATLAS detector. Cross sections, in both the electron and muon decay modes of the W-boson, are presented as a function of jet multiplicity and of the transverse momentum of the leading and next-to-leading jets in the event. Measurements are also presented of the ratio of cross sections σ(W+⩾n)/σ(W+⩾n−1) for inclusive jet multiplicities n=1–4. The results, based on an integrated luminosity of 1.3 pb−1, have been corrected for all known detector effects and are quoted in a limited and well-defined range of jet and lepton kinematics. The measured cross sections are compared to particle-level predictions based on perturbative QCD. Next-to-leading order calculations, studied here for n⩽2, are found in good agreement with the data. Leading-order multiparton event generators, normalized to the NNLO total cross section, describe the data well for all measured jet multiplicities.

Keywords

W-boson
Jets
ATLAS
LHC
Proton–proton
7 TeV

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

ATLAS Collaboration. Measurement of the production cross section for W-bosons in association with jets in pp collisions at √s=7 TeV with the ATLAS detector. In: Physics letters. B, 2011, vol. 698, n° 5, p. 325–345. doi: 10.1016/j.physletb.2011.03.012

Article (Published version)

Identifiers

PID : unige:41422
DOI : 10.1016/j.physletb.2011.03.012

Additional URL for this publication

http://www.sciencedirect.com/science/article/pii/S0370269311002450#

Journal ISSN

0370-2693

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307downloads

Creation

31/10/2014 11:18:00

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31/10/2014 11:18:00

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10/11/2026 17:10:52