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dc.contributor.authorALICE Collaboration
dc.date.accessioned2019-06-24T08:07:05Z
dc.date.available2019-06-24T08:07:05Z
dc.date.issued2019
dc.identifier.citationALICE Collaboration. (2019). Multiplicity dependence of (anti-)deuteron production in pp collisions at √s = 7 TeV. <i>Physics Letters B</i>, <i>794</i>, 50-63. <a href="https://doi.org/10.1016/j.physletb.2019.05.028" target="_blank">https://doi.org/10.1016/j.physletb.2019.05.028</a>
dc.identifier.otherCONVID_31231921
dc.identifier.otherTUTKAID_81763
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/64786
dc.description.abstractIn this letter, the production of deuterons and anti-deuterons in pp collisions at √s = 7 TeV is studied as a function of the charged-particle multiplicity density at mid-rapidity with the ALICE detector at the LHC. Production yields are measured at mid-rapidity in five multiplicity classes and as a function of the deuteron transverse momentum (pT). The measurements are discussed in the context of hadron–coalescence models. The coalescence parameter B2, extracted from the measured spectra of (anti-)deuterons and primary (anti-)protons, exhibits no significant pT-dependence for pT < 3 GeV/c, in agreement with the expectations of a simple coalescence picture. At fixed transverse momentum per nucleon, the B2 parameter is found to decrease smoothly from low multiplicity pp to Pb–Pb collisions, in qualitative agreement with more elaborate coalescence models. The measured mean transverse momentum of (anti-)deuterons in pp is not reproduced by the Blast-Wave model calculations that simultaneously describe pion, kaon and proton spectra, in contrast to central Pb–Pb collisions. The ratio between the pT-integrated yield of deuterons to protons, d/p, is found to increase with the chargedparticle multiplicity, as observed in inelastic pp collisions at different centre-of-mass energies. The d/p ratios are reported in a wide range, from the lowest to the highest multiplicity values measured in pp collisions at the LHC.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofseriesPhysics Letters B
dc.rightsCC BY 4.0
dc.subject.otherproton-proton collisions
dc.subject.otherdeuterons
dc.subject.otheranti-deuterons
dc.titleMultiplicity dependence of (anti-)deuteron production in pp collisions at √s = 7 TeV
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201906203366
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2019-06-20T12:15:10Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.format.pagerange50-63
dc.relation.issn0370-2693
dc.relation.numberinseries0
dc.relation.volume794
dc.type.versionpublishedVersion
dc.rights.copyright© 2019 The Author(s).
dc.rights.accesslevelopenAccessfi
dc.subject.ysohiukkasfysiikka
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p15576
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1016/j.physletb.2019.05.028
dc.type.okmA1


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