Using Z Boson Events to Study Parton-Medium Interactions in Pb-Pb Collisions

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dc.date.accessioned2022-11-30T14:05:35Z
dc.date.accessioned2022-12-20T14:52:11Z
dc.date.available2022-11-30T14:05:35Z
dc.date.available2022-12-20T14:52:11Z
dc.date.created2022-11-30T14:05:35Z
dc.date.issued2022-03-25
dc.identifierPhysical Review Letters. College Pk: Amer Physical Soc, v. 128, n. 12, 19 p., 2022.
dc.identifier0031-9007
dc.identifierhttp://hdl.handle.net/11449/237905
dc.identifier10.1103/PhysRevLett.128.122301
dc.identifierWOS:000786690500002
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5417960
dc.description.abstractThe spectra measurements of charged hadrons produced in the shower of a parton originating in the same hard scattering with a leptonically decaying Z boson arc reported in lead-lead nuclei (Pb-Pb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. Both Pb-Pb and pp data sets are recorded by the CMS experiment at the LHC and correspond to an integrated luminosity of 1.7 nb(-1) and 320 pb(-1), respectively. Hadronic collision data with one reconstructed Z boson candidate with the transverse momentum p(T) > 30 GeV/c are analyzed. The Z boson constrains the initial energy and direction of the associated parton. In heavy ion events, azimuthal angular distributions of charged hadrons with respect to the direction of a Z boson are sensitive to modifications of the in-medium parton shower and medium response. compared to reference data from pp interactions, the results for central Pb-Pb collisions indicate a modification of the angular correlations. The measurements of the fragmentation functions and p(T) spectra of charged particles in Z boson events, which are sensitive to medium modifications of the parton shower longitudinal structure, are also reported. Significant modifications in central Pb-Pb events compared to the pp reference data are also found for these observables.
dc.languageeng
dc.publisherAmer Physical Soc
dc.relationPhysical Review Letters
dc.sourceWeb of Science
dc.titleUsing Z Boson Events to Study Parton-Medium Interactions in Pb-Pb Collisions
dc.typeArtículos de revistas


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