Näytä suppeat kuvailutiedot

dc.contributor.authorALICE Collaboration
dc.date.accessioned2021-01-18T06:58:08Z
dc.date.available2021-01-18T06:58:08Z
dc.date.issued2020
dc.identifier.citationALICE Collaboration. (2020). Dielectron production in proton-proton and proton-lead collisions at √sNN = 5.02 TeV. <i>Physical Review C</i>, <i>102</i>(5), Article 055204. <a href="https://doi.org/10.1103/PhysRevC.102.055204" target="_blank">https://doi.org/10.1103/PhysRevC.102.055204</a>
dc.identifier.otherCONVID_47740934
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/73652
dc.description.abstractThe first measurements of dielectron production at midrapidity (|ηe| < 0.8) in proton–proton and proton–lead collisions at √sNN = 5.02 TeV at the LHC are presented. The dielectron cross section is measured with the ALICE detector as a function of the invariant mass mee and the pair transverse momentum pT,ee in the ranges mee < 3.5 GeV/c2 and pT,ee < 8 GeV/c, in both collision systems. In proton–proton collisions, the charm and beauty cross sections are determined at midrapidity from a fit to the data with two different event generators. This complements the existing dielectron measurements performed at √s = 7 and 13 TeV. The slope of the √s dependence of the three measurements is described by FONLL calculations. The dielectron cross section measured in proton–lead collisions is in agreement, within the current precision, with the expected dielectron production without any nuclear matter effects for e+e− pairs from open heavy-flavor hadron decays. For the first time at LHC energies, the dielectron production in proton–lead and proton–proton collisions are directly compared at the same √sNN via the dielectron nuclear modification factor RpPb. The measurements are compared to model calculations including cold nuclear matter effects, or additional sources of dielectrons from thermal radiation.en
dc.format.extent21
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.relation.urihttps://dx.doi.org/10.1103/PhysRevC.102.055204
dc.rightsCC BY 4.0
dc.subject.otherparticle physics
dc.titleDielectron production in proton-proton and proton-lead collisions at √sNN = 5.02 TeV
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202101181127
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn2469-9985
dc.relation.numberinseries5
dc.relation.volume102
dc.type.versionpublishedVersion
dc.rights.copyright©2020 CERN, for the ALICE Collaboration
dc.rights.accesslevelopenAccessfi
dc.subject.ysohiukkasfysiikka
dc.subject.ysoydinfysiikka
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p15576
jyx.subject.urihttp://www.yso.fi/onto/yso/p14759
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1103/PhysRevC.102.055204
dc.type.okmA1


Aineistoon kuuluvat tiedostot

Thumbnail

Aineisto kuuluu seuraaviin kokoelmiin

Näytä suppeat kuvailutiedot

CC BY 4.0
Ellei muuten mainita, aineiston lisenssi on CC BY 4.0