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Measurement of neutral strange particle production in the underlying event in proton-proton collisions at s√=7 TeV
dc.contributor.author | Baringer, Philip S. | |
dc.contributor.author | Bean, Alice | |
dc.contributor.author | Bean, Gabriele | |
dc.contributor.author | Kenny, R. P., III | |
dc.contributor.author | Murray, Michael J. | |
dc.contributor.author | Noonan, Danny | |
dc.contributor.author | Sanders, Stephen J. | |
dc.contributor.author | Stringer, Robert W. | |
dc.contributor.author | Wood, Jeffrey Scott | |
dc.contributor.author | Chatrchyan, S. | |
dc.contributor.author | Khachatryan, V. | |
dc.contributor.author | Sirunyan, A. M. | |
dc.contributor.author | Tumasyan, A. | |
dc.contributor.author | Adam, W. | |
dc.contributor.author | Bergauer, T. | |
dc.contributor.author | Dragicevic, M. | |
dc.contributor.author | Erö, J. | |
dc.date.accessioned | 2014-11-11T14:33:35Z | |
dc.date.available | 2014-11-11T14:33:35Z | |
dc.date.issued | 2013-09-03 | |
dc.identifier.citation | S. Chatrchyan et al. (CMS Collaboration). (2013). "Measurement of neutral strange particle production in the underlying event in proton-proton collisions at s√=7 TeV." Physical Review D, 88(5):052001. http://www.dx.doi.org/10.1103/PhysRevD.88.052001. | |
dc.identifier.issn | 0556-2821 | |
dc.identifier.uri | http://hdl.handle.net/1808/15677 | |
dc.description | This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.88.052001. | |
dc.description.abstract | Measurements are presented of the production of primary K(0)(S) and Λ particles in proton-proton collisions at s√=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 K(0)(S) and Λ particles measured at pseudorapidities |η|<2 rise with increasing charged-particle jet p(T) 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 K(0)(S) mesons and by about 50% for Λ 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 p(T) and similar trends for mesons and baryons indicate that the multiparton-interaction dynamics is decoupled from parton hadronization, which occurs at a later stage. | |
dc.publisher | American Physical Society | |
dc.title | Measurement of neutral strange particle production in the underlying event in proton-proton collisions at s√=7 TeV | |
dc.type | Article | |
kusw.kuauthor | Baringer, Philip S. | |
kusw.kuauthor | Bean, Alice | |
kusw.kuauthor | Benelli, Gabriele | |
kusw.kuauthor | Kenny, R. P. III | |
kusw.kuauthor | Murray, Michael J. | |
kusw.kuauthor | Noonan, Danny | |
kusw.kuauthor | Sanders, Stephen J. | |
kusw.kuauthor | Stringer, Robert W. | |
kusw.kuauthor | Wood, Jeffrey Scott | |
kusw.kudepartment | Physics and Astronomy | |
kusw.oastatus | fullparticipation | |
dc.identifier.doi | 10.1103/PhysRevD.88.052001 | |
dc.identifier.orcid | https://orcid.org/0000-0002-3932-3769 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |