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dc.contributor.authorALICE collaboration
dc.date.accessioned2021-11-18T12:32:44Z
dc.date.available2021-11-18T12:32:44Z
dc.date.issued2021
dc.identifier.citationALICE collaboration. (2021). Jet fragmentation transverse momentum distributions in pp and p-Pb collisions at √s, √sNN = 5.02 TeV. <i>Journal of High Energy Physics</i>, <i>2021</i>(9), Article 211. <a href="https://doi.org/10.1007/JHEP09(2021)211" target="_blank">https://doi.org/10.1007/JHEP09(2021)211</a>
dc.identifier.otherCONVID_101930030
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/78700
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofseriesJournal of High Energy Physics
dc.rightsCC BY 4.0
dc.subject.otherJet fragmentation transverse momentum (jT) distributions are measured in proton-proton (pp) and proton-lead (p-Pb) collisions at √sNN = 5.02 TeV with the ALICE experiment at the LHC. Jets are reconstructed with the ALICE tracking detectors and electromagnetic calorimeter using the anti-kT algorithm with resolution parameter R = 0.4 in the pseudorapidity range |η| < 0.25. The jT values are calculated for charged particles inside a fixed cone with a radius R = 0.4 around the reconstructed jet axis. The measured jT distributions are compared with a variety of parton-shower models. Herwig and PYTHIA 8 based models describe the data well for the higher jT region
dc.subject.otherwhile they underestimate the lower jT region. The jT distributions are further characterised by fitting them with a function composed of an inverse gamma function for higher jT values (called the “wide component”)
dc.subject.otherrelated to the perturbative component of the fragmentation process
dc.subject.otherand with a Gaussian for lower jT values (called the “narrow component”)
dc.subject.otherpredominantly connected to the hadronisation process. The width of the Gaussian has only a weak dependence on jet transverse momentum
dc.subject.otherwhile that of the inverse gamma function increases with increasing jet transverse momentum. For the narrow component
dc.subject.otherthe measured trends are successfully described by all models except for Herwig. For the wide component
dc.subject.otherHerwig and PYTHIA 8 based models slightly underestimate the data for the higher jet transverse momentum region. These measurements set constraints on models of jet fragmentation and hadronisation.
dc.titleJet fragmentation transverse momentum distributions in pp and p-Pb collisions at √s, √sNN = 5.02 TeV
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202111185711
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.issn1126-6708
dc.relation.numberinseries9
dc.relation.volume2021
dc.type.versionpublishedVersion
dc.rights.copyright© CERN, for the benefit of the ALICE Collaboration. Article funded by SCOAP3.
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.doi10.1007/JHEP09(2021)211
dc.type.okmA1


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