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dc.contributor.authorTumasyan, Armenpt_BR
dc.contributor.authorSilveira, Gustavo Gil dapt_BR
dc.contributor.authorCMS Collaborationpt_BR
dc.date.accessioned2024-01-10T03:36:30Zpt_BR
dc.date.issued2023pt_BR
dc.identifier.issn0370-2693pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/270783pt_BR
dc.description.abstractThe first measurements of the Fourier coefficients (Vn) of the azimuthal distributions of charged hadrons emitted from photon-proton (γp) interactions are presented. The data are extracted from 68.8 nb−1 of ultra-peripheral proton-lead (pPb) collisions at √sNN = 8.16 TeV using the CMS detector. The high energy lead ions produce a flux of photons that can interact with the oncoming proton. This γp system provides a set of unique initial conditions with multiplicity lower than in photon-lead collisions but comparable to recent electron-positron and electron-proton data. The Vn coefficients are presented in ranges of event multiplicity and transverse momentum (pT) and are compared to corresponding hadronic minimum bias pPb results. For a given multiplicity range, the mean pT of charged particles is smaller in γp than in pPb collisions. For both the γp and pPb samples, V1 is negative, V2 is positive, and V3 consistent with 0. For each multiplicity and pT range, V2 is larger for γp events. The γp data are consistent with model predictions that have no collective effects.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysics letters. B. Amsterdam. Vol. 844 (Sept. 2023), 137905, 24 p.pt_BR
dc.rightsOpen Accessen
dc.subjectCMSen
dc.subjectAceleradores de partículaspt_BR
dc.subjectColisao de ions pesadospt_BR
dc.subjectPhoton-protonen
dc.subjectInterações foton-prótonpt_BR
dc.subjectCollectivityen
dc.titleTwo-particle azimuthal correlations in γp interactions using pPb collisions at √sNN = 8.16 TeVpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001188218pt_BR
dc.type.originEstrangeiropt_BR


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