Observation of Forward Neutron Multiplicity Dependence of Dimuon Acoplanarity in Ultraperipheral Pb-Pb Collisions at root S-NN=5.02 TeV

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dc.authorid291820en_US
dc.contributor.authorGüler, Emine Gürpınar
dc.contributor.author.;, ve diğer
dc.date.accessioned2021-12-23T12:19:05Z
dc.date.available2021-12-23T12:19:05Z
dc.date.issued2021
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractThe first measurement of the dependence of gamma gamma -> mu(+)mu(-) production on the multiplicity of neutrons emitted very close to the beam direction in ultraperipheral heavy ion collisions is reported. Data for lead-lead interactions at root S-NN = 5.02 TeV, with an integrated luminosity of approximately 1.5 nb(-1), are collected using the CMS detector at the LHC. The azimuthal correlations between the two muons in the invariant mass region 8 < m(mu mu) < 60 GeV are extracted for events including 0, 1, or at least 2 neutrons detected in the forward pseudorapidity range vertical bar eta vertical bar > 8.3. The back-to-back correlation structure from leading-order photon-photon scattering is found to be significantly broader for events with a larger number of emitted neutrons from each nucleus, corresponding to interactions with a smaller impact parameter. This observation provides a data-driven demonstration that the average transverse momentum of photons emitted from relativistic heavy ions has an impact parameter dependence. These results provide new constraints on models of photon-induced interactions in ultraperipheral collisions. They also provide a baseline to search for possible final-state effects on lepton pairs caused by traversing a quark-gluon plasma produced in hadronic heavy ion collisionsen_US
dc.identifier.citationPHYSICAL REVIEW LETTERS 127, 122001 (2021)en_US
dc.identifier.doi10.1103/PhysRevLett.127.122001
dc.identifier.issn0973-1458
dc.identifier.pmid34597080en_US
dc.identifier.scopus2-s2.0-85115323201en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1103/PhysRevLett.127.122001
dc.identifier.wosWOS:000704665100006en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.subjectPERIPHERAL COLLISIONen_US
dc.subjectPHYSICSen_US
dc.titleObservation of Forward Neutron Multiplicity Dependence of Dimuon Acoplanarity in Ultraperipheral Pb-Pb Collisions at root S-NN=5.02 TeVen_US
dc.typeArticleen_US

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