%0 Journal Article
%T Measurement of the production cross section for W-bosons in association with jets in pp collisions at root s=7 TeV with the ATLAS detector
%A ATLAS Collaboration (Aad, G. et al
%A Amoros, G.
%A Cabrera Urban, S.
%A Castillo Gimenez, V.
%A Costa, M. J.
%A Escobar, C.
%A Ferrer, A.
%A Fuster, J.
%A Garcia, C.
%A Gonzalez de la Hoz, S.
%A Hernandez Jimenez, Y.
%A Higon-Rodriguez, E.
%A Irles Quiles, A.
%A Kaci, M.
%A Lacasta, C.
%A Lacuesta, V. R.
%A Marti-Garcia, S.
%A Miñano, M.
%A Mitsou, V. A.
%A Moles-Valls, R.
%A Moreno Llacer, M.
%A Oliver Garcia, E.
%A Perez Garcia-Estañ, M. T.
%A Ros, E.
%A Salt, J.
%A Solans, C. A.
%A Soldevila, U.
%A Sanchez, J.
%A Torro Pastor, E.
%A Valladolid Gallego, E.
%A Valls Ferrer, J. A.
%A Villaplana Perez, M.
%A Vos, M.
%A Wildauer, A.
%J Physics Letters B
%D 2011
%V 698
%N 5
%I Elsevier Science Bv
%@ 0370-2693
%G English
%F ATLASCollaborationAad_etal2011
%O ISI:000290185500001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=628), last updated on Wed, 24 Aug 2011 12:24:00 +0000
%X 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 sigma (W + >= n)/sigma(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.
%K W-boson
%K Jets
%K ATLAS
%K LHC
%K Proton-proton
%K 7 TeV
%R 10.1016/j.physletb.2011.03.012
%U http://arxiv.org/abs/arXiv:1012.5382
%U https://doi.org/10.1016/j.physletb.2011.03.012
%P 325-345