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dc.contributor.authorAcharya, Shreyasipt_BR
dc.contributor.authorGay Ducati, Maria Beatrizpt_BR
dc.contributor.authorPereira, Luis Gustavopt_BR
dc.contributor.authorALICE Collaborationpt_BR
dc.date.accessioned2023-12-19T03:25:20Zpt_BR
dc.date.issued2023pt_BR
dc.identifier.issn1434-6044pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/270383pt_BR
dc.description.abstractHadronic resonances are used to probe the hadron gas produced in the late stage of heavy-ion collisions since they decay on the same timescale, of the order of 1–10 fm/c, as the decoupling time of the system. In the hadron gas, (pseudo)elastic scatterings among the products of resonances that decayed before the kinetic freeze-out and regeneration processes counteract each other, the net effect depending on the resonance lifetime, the duration of the hadronic phase, and the hadronic cross sections at play. In this context, the (1385)± particle is of particular interest as models predict that regeneration dominates over rescattering despite its relatively short lifetime of about 5.5 fm/c. The first measurement of the (1385)± resonance production at midrapidity in Pb–Pb collisions at √sNN = 5.02 TeV with the ALICE detector is presented in this Letter. The resonances are reconstructed via their hadronic decay channel, π, as a function of the transverse momentum (pT) and the collision centrality. The results are discussed in comparison with the measured yield of pions and with expectations from the statistical hadronization model as well as commonly employed event generators, including PYTHIA8/Angantyr and EPOS3 coupled to the UrQMD hadronic cascade afterburner. None of the models can describe the data. For (1385)±, a similar behaviour as K∗(892)0 is observed in data unlike the predictions of EPOS3 with afterburner.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe European physical journal. C, Particles and fields. Berlin. Vol. 83 (2023), 351, 16 p.pt_BR
dc.rightsOpen Accessen
dc.subjectAceleradores de partículaspt_BR
dc.subjectColisao de ions pesadospt_BR
dc.subjectHadronspt_BR
dc.titleΣ (1385)± resonance production in Pb–Pb collisions at √sNN = 5.02 TeVpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001186291pt_BR
dc.type.originEstrangeiropt_BR


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