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

Show simple item record CMS Collaboration en_US Sirunyan, A. M. en_US DUBE, SOURABH en_US KANSAL, B. en_US KAPOOR, A. en_US KOTHEKAR, K. en_US PANDEY, S. en_US RANE, A. en_US RASTOGI, A. en_US SHARMA, SEEMA et al. en_US 2020-08-14T07:16:04Z 2020-08-14T07:16:04Z 2020-07 en_US
dc.identifier.citation Journal of High Energy Physics, 2020(7). en_US
dc.identifier.issn 1126-6708 en_US
dc.identifier.issn 1029-8479 en_US
dc.identifier.uri en_US
dc.description.abstract The transverse energy (EγT) 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 <EγT< 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. en_US
dc.language.iso en en_US
dc.publisher Springer Nature en_US
dc.subject Hadron-Hadron scattering (experiments) en_US
dc.subject Heavy-ion collision en_US
dc.subject Photon production en_US
dc.subject TOC-AUG-2020 en_US
dc.subject 2020 en_US
dc.subject 2020-AUG-WEEK2 en_US
dc.title The production of isolated photons in PbPb and pp collisions at √sNN = 5.02 TeV en_US
dc.type Article en_US
dc.contributor.department Dept. of Physics en_US
dc.identifier.sourcetitle Journal of High Energy Physics en_US
dc.publication.originofpublisher Foreign en_US

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