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The production of isolated photons in PbPb and pp collisions at √sNN = 5.02 TeV

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dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAmbrogi, F.
dc.contributor.authorMatveev, V.
dc.contributor.authorChadeeva, M.
dc.contributor.authorParygin, P.
dc.contributor.authorPhilippov, D.
dc.contributor.authorPopova, E.
dc.contributor.authorRusinov, V.
dc.contributor.authorМатвеев, Виктор Анатольевич
dc.contributor.authorЧадеева, Марина Валентиновна
dc.contributor.authorРусинов, Владимир Юрьевич
dc.date.accessioned2024-11-26T14:53:31Z
dc.date.available2024-11-26T14:53:31Z
dc.date.issued2020
dc.description.abstract© 2020, The Author(s).The transverse energy (ETγ) spectra of photons isolated from other particles are measured using proton-proton (pp) and lead-lead (PbPb) collisions at the LHC at sNN = 5.02 TeV with integrated luminosities of 27.4 pb−1 and 404 μb−1 for pp and PbPb data, respectively. The results are presented for photons with 25 <ETγ< 200 GeV in the pseudorapidity range |η| < 1.44, and for different centrality intervals for PbPb collisions. Photon production in PbPb collisions is consistent with that in pp collisions scaled by the number of binary nucleon-nucleon collisions, demonstrating that photons do not interact with the quark-gluon plasma. Therefore, isolated photons can provide information about the initial energy of the associated parton in photon+jet measurements. The results are compared with predictions from the next-to-leading-order jetphox generator for different parton distribution functions (PDFs) and nuclear PDFs (nPDFs). The comparisons can help to constrain the nPDFs global fits. [Figure not available: see fulltext.]
dc.identifier.citationThe production of isolated photons in PbPb and pp collisions at √sNN = 5.02 TeV / Sirunyan, A.M. [et al.] // Journal of High Energy Physics. - 2020. - 2020. - № 7. - 10.1007/JHEP07(2020)116
dc.identifier.doi10.1007/JHEP07(2020)116
dc.identifier.urihttps://www.doi.org/10.1007/JHEP07(2020)116
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85088163145&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000553357900001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/22030
dc.relation.ispartofJournal of High Energy Physics
dc.titleThe production of isolated photons in PbPb and pp collisions at √sNN = 5.02 TeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue7
oaire.citation.volume2020
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