Measurement of the production cross section for W-bosons in association with jets in $pp$ collisions at $\sqrt{s}=7$ TeV with the ATLAS detector - INSPIRE

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Measurement of the production cross section for W-bosons in association with jets in $pp$ collisions at $\sqrt{s}=7$ TeV with the ATLAS detector

ATLAS

Collaboration

Dec, 2010

21 pages

Published in:

Phys.Lett.B 698 (2011) 325-345

Published: Jul 16, 2013

e-Print:

1012.5382 [hep-ex]

DOI:

10.1016/j.physletb.2011.03.012

Report number:

CERN-PH-EP-2010-081

Experiments:

CERN-LHC-ATLAS

View in:

reference search111 citations

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Abstract: (Elsevier)

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.

Note:

12 pages plus author list (26 pages total), 5 figures, 5 tables, submitted to Physics Letters B (authors.xml file added)

W-boson
Jets
ATLAS
LHC
Proton-proton
7 TeV
W -boson
Proton–proton
W: associated production
jet: multiplicity

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