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dc.contributor.authorAcharya, Shreyasipt_BR
dc.contributor.authorGay Ducati, Maria Beatrizpt_BR
dc.contributor.authorPereira, Luis Gustavopt_BR
dc.contributor.authorPezzi, Rafael Perettipt_BR
dc.contributor.authorALICE Collaborationpt_BR
dc.date.accessioned2018-09-18T02:30:06Zpt_BR
dc.date.issued2018pt_BR
dc.identifier.issn0370-2693pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/182102pt_BR
dc.description.abstractThe production of Z0bosons at large rapidities in Pb–Pb collisions at √sNN=5.02 TeVis reported. Z0candidates are reconstructed in the dimuon decay channel (Z0→μ+μ−), based on muons selected with pseudo-rapidity −4.0 <η<−2.5and pT>20GeV/c. The invariant yield and the nuclear modification factor, RAA, are presented as a function of rapidity and collision centrality. The value of RAAfor the 0–20% central Pb–Pb collisions is 0.67 ±0.11 (stat.)±0.03 (syst.)±0.06 (corr.syst.), exhibiting a deviation of 2.6σfrom unity. The results are well-described by calculations that include nuclear modifications of the parton distribution functions, while the predictions using vacuum PDFs deviate from data by 2.3σin the 0–90% centrality class and by 3σin the 0–20% central collisions.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysics letters. B. Amsterdam. Vol. 780 (May 2018), p. 372-383pt_BR
dc.rightsOpen Accessen
dc.subjectAceleradores de partículaspt_BR
dc.subjectColisao de ions pesadospt_BR
dc.subjectBosons Zpt_BR
dc.titleMeasurement of Z0-boson production at large rapidities in Pb–Pb collisions at √sNN=5.02 TeVpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001072279pt_BR
dc.type.originEstrangeiropt_BR


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