Measurement of neutral strange particle production in the underlying event in proton-proton collisions at √s=7TeV

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dc.citation.firstpage52001en_US
dc.citation.journalTitlePhysical Review Den_US
dc.citation.volumeNumber88en_US
dc.contributor.authorAdair, A.en_US
dc.contributor.authorAkgun, B.en_US
dc.contributor.authorEcklund, K.M.en_US
dc.contributor.authorGeurts, F.J.M.en_US
dc.contributor.authorLi, W.en_US
dc.contributor.authorPadley, B.P.en_US
dc.contributor.authorRedjimi, R.en_US
dc.contributor.authorRoberts, J.en_US
dc.contributor.authorZabel, J.en_US
dc.contributor.authorCMS Collaborationen_US
dc.date.accessioned2013-09-18T14:49:09Zen_US
dc.date.available2013-09-18T14:49:09Zen_US
dc.date.issued2013en_US
dc.description.abstractMeasurements are presented of the production of primary K0S and particles in proton-proton collisions at ffisffiffi p ¼ 7 TeV in the region transverse to the leading charged-particle jet in each event. The average multiplicity and average scalar transverse momentum sum of K0S and particles measured at pseudorapidities j j < 2 rise with increasing charged-particle jet pT in the range 1–10 GeV=c and saturate in the region 10–50 GeV=c. The rise and saturation of the strange-particle yields and transverse momentum sums in the underlying event are similar to those observed for inclusive charged particles, which confirms the impact-parameter picture of multiple parton interactions. The results are compared to recent tunes of the PYTHIA Monte Carlo event generator. The PYTHIA simulations underestimate the data by 15%–30% for K0S mesons and by about 50% for baryons, a deficit similar to that observed for the inclusive strange-particle production in non-single-diffractive proton-proton collisions. The constant strange- to charged-particle activity ratios with respect to the leading jet pT and similar trends for mesons and baryons indicate that the multiparton-interaction dynamics is decoupled from parton hadronization, which occurs at a later stage.en_US
dc.embargo.termsnoneen_US
dc.identifier.citationAdair, A., Akgun, B., Ecklund, K.M., et al.. "Measurement of neutral strange particle production in the underlying event in proton-proton collisions at √s=7TeV." <i>Physical Review D,</i> 88, (2013) American Physical Society: 52001. http://dx.doi.org/10.1103/PhysRevD.88.052001.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevD.88.052001en_US
dc.identifier.urihttps://hdl.handle.net/1911/72080en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.pubplaceAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleMeasurement of neutral strange particle production in the underlying event in proton-proton collisions at √s=7TeVen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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