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Title
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Event shapes and azimuthal correlations in Z + jets events in pp collisions at =7 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| Measurements of event shapes and azimuthal correlations are presented for events where a Z boson is produced in association with jets in proton-proton collisions. The data collected with the CMS detector at the CERN LHC at root s = 7 TeV correspond to an integrated luminosity of 5.0 fb(-1). The analysis provides a test of predictions from perturbative QCD for a process that represents a substantial background to many physics channels. Results are presented as a function of jet multiplicity, for inclusive Z boson production and for Z bosons with transverse momenta greater than 150 GeV, and compared to predictions from Monte Carlo event generators that include leading-order multiparton matrix-element (with up to four hard partons in the final state) and next-to-leading-order simulations of Z + 1-jet events. The experimental results are corrected for detector effects, and can be compared directly with other QCD models. (c) 2013 CERN. Published by Elsevier B.V. All rights reserved. |
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Language
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English
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Source (journal)
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Physics letters : B. - Amsterdam, 1967, currens
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Publication
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Amsterdam
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North-Holland
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2013
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ISSN
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0370-2693
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DOI
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10.1016/J.PHYSLETB.2013.04.025
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Volume/pages
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722
:4-5
(2013)
, p. 238-261
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ISI
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000319638000003
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Full text (Publisher's DOI)
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Full text (open access)
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