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

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...

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Autores principales:	Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín Fernando, The ATLAS Collaboration
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2011
Materias:	Física w boson jets ATLAS detector la̵rge hadron collider Protones
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/79513
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-79513
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física w boson jets ATLAS detector la̵rge hadron collider Protones
spellingShingle	Física w boson jets ATLAS detector la̵rge hadron collider Protones Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration Measurement of the production cross section for <i>W</i> -bosons in association with jets in <i>pp</i> collisions at √s = 7 TeV with the ATLAS detector
topic_facet	Física w boson jets ATLAS detector la̵rge hadron collider Protones
description	This Letter reports on a first measurement of the inclusive <i>W</i> + 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 <i>W</i> -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(<i>W</i> + ≥ n)/σ(<i>W</i> + ≥ n − 1) for inclusive jet multiplicities n = 1–4. The results, based on an integrated luminosity of 1.3 pb<sup>−1</sup>, 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.
format	Articulo Articulo
author	Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration
author_facet	Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration
author_sort	Anduaga, Xabier Sebastián
title	Measurement of the production cross section for <i>W</i> -bosons in association with jets in <i>pp</i> collisions at √s = 7 TeV with the ATLAS detector
title_short	Measurement of the production cross section for <i>W</i> -bosons in association with jets in <i>pp</i> collisions at √s = 7 TeV with the ATLAS detector
title_full	Measurement of the production cross section for <i>W</i> -bosons in association with jets in <i>pp</i> collisions at √s = 7 TeV with the ATLAS detector
title_fullStr	Measurement of the production cross section for <i>W</i> -bosons in association with jets in <i>pp</i> collisions at √s = 7 TeV with the ATLAS detector
title_full_unstemmed	Measurement of the production cross section for <i>W</i> -bosons in association with jets in <i>pp</i> collisions at √s = 7 TeV with the ATLAS detector
title_sort	measurement of the production cross section for <i>w</i> -bosons in association with jets in <i>pp</i> collisions at √s = 7 tev with the atlas detector
publishDate	2011
url	http://sedici.unlp.edu.ar/handle/10915/79513
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Measurement of the production cross section for <i>W</i> -bosons in association with jets in <i>pp</i> collisions at √s = 7 TeV with the ATLAS detector

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