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dc.contributor.authorALICE Collaboration
dc.contributor.authorChang, BeomSu
dc.contributor.authorKim, Dong Jo
dc.contributor.authorKral, Jiri
dc.contributor.authorRak, Jan
dc.contributor.authorRäsänen, Sami
dc.contributor.authorSlupecki, Maciej
dc.contributor.authorSnellman, Tomas
dc.contributor.authorTrzaska, Wladyslaw
dc.contributor.authorVargyas, Márton
dc.contributor.authorViinikainen, Jussi
dc.date.accessioned2015-10-23T10:49:35Z
dc.date.available2015-10-23T10:49:35Z
dc.date.issued2015fi
dc.identifier.citationALICE Collaboration. (2015). Measurement of charm and beauty production at central rapidity versus charged-particle multiplicity in proton-proton collisions at √s = 7 TeV. <em>Journal of High Energy Physics</em>, 2015 (9), 148. <a href="http://dx.doi.org/10.1007/JHEP09(2015)148">doi:10.1007/JHEP09(2015)148</a> Retrieved from <a href="http://arxiv.org/abs/1505.00664">http://arxiv.org/abs/1505.00664</a>fi
dc.identifier.otherTUTKAID_67444
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/47389
dc.description.abstractPrompt D meson and non-prompt J/ψ yields are studied as a function of the multiplicity of charged particles produced in inelastic proton-proton collisions at a centreof-mass energy of √ s = 7 TeV. The results are reported as a ratio between yields in a given multiplicity interval normalised to the multiplicity-integrated ones (relative yields). They are shown as a function of the multiplicity of charged particles normalised to the average value for inelastic collisions (relative charged-particle multiplicity). D0 , D+ and D∗+ mesons are measured in five pT intervals from 1 GeV/c to 20 GeV/c and for |y| < 0.5 via their hadronic decays. The D-meson relative yield is found to increase with increasing charged-particle multiplicity. For events with multiplicity six times higher than the average multiplicity of inelastic collisions, a yield enhancement of a factor about 15 relative to the multiplicity-integrated yield in inelastic collisions is observed. The yield enhancement is independent of transverse momentum within the uncertainties of the measurement. The D0 -meson relative yield is also measured as a function of the relative multiplicity at forward pseudo-rapidity. The non-prompt J/ψ, i.e. the B hadron, contribution to the inclusive J/ψ production is measured in the di-electron decay channel at central rapidity. It is evaluated for pT > 1.3 GeV/c and |y| < 0.9, and extrapolated to pT > 0. The fraction of non-prompt J/ψ in the inclusive J/ψ yields shows no dependence on the charged-particle multiplicity at central rapidity. Charm and beauty hadron relative yields exhibit a similar increase with increasing charged-particle multiplicity. The measurements are compared to PYTHIA 8, EPOS 3 and percolation calculations.fi
dc.language.isoeng
dc.publisherSpringer Berlin Heidelberg
dc.relation.ispartofseriesJournal of High Energy Physics
dc.subject.otherhadron-hadron scatteringfi
dc.titleMeasurement of charm and beauty production at central rapidity versus charged-particle multiplicity in proton-proton collisions at √s = 7 TeVfi
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201510203428
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2015-10-20T12:15:14Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn1126-6708
dc.relation.volume2015
dc.type.versionpublishedVersion
dc.rights.copyright© CERN, for the benefit of the ALICE Collaboration. Article funded by SCOAP3. JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1007/JHEP09(2015)148


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© CERN, for the benefit of the ALICE Collaboration.
Article funded by SCOAP3. JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0
Except where otherwise noted, this item's license is described as © CERN, for the benefit of the ALICE Collaboration. Article funded by SCOAP3. JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0