Update on J/psi regeneration in a hadron gas

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dc.citation.issue4
dc.citation.volumev. 97
dc.contributor.authorAbreu, L. M.
dc.contributor.authorKhemchandani, Kanchan Pradeepkumar [UNIFESP]
dc.contributor.authorTorres, A. Martinez
dc.contributor.authorNavarra, F. S.
dc.contributor.authorNielsen, M.
dc.coverageCollege Pk
dc.date.accessioned2020-07-20T16:31:01Z
dc.date.available2020-07-20T16:31:01Z
dc.date.issued2018
dc.description.abstractIn heavy-ion collisions, after the quark-gluon plasma there is a hadronic gas phase. Using effective Lagrangians, we study the interactions of charmed mesons which lead to J/psi production and absorption in this gas. We update and extend previous calculations introducing strange meson interactions and also including the interactions mediated by the recently measured exotic charmonium resonances Z(3900) and Z(4025). These resonances open new reaction channels for the J/psi, which could potentially lead to changes in its multiplicity. We compute the J/psi production cross section in processes such as D-(s)(*) + (D) over bar(*) -> J/psi + (pi, rho, K, K*) and also the J/psi absorption cross section in the corresponding inverse processes. Using the obtained cross sections as input to solve the appropriate rate equation, we conclude that the interactions in the hadron gas phase lead to a 20-24% reduction of the J/psi abundance. Within the uncertainties of the calculation, this reduction is the same at the Relativistic Heavy Ion Collider and the large Hadron Collider.en
dc.description.affiliationUniv Fed Bahia, Inst Fis, Campus Univ Ondina, BR-40170115 Salvador, BA, Brazil
dc.description.affiliationUniv Fed Sao Paulo, BR-01302907 Sao Paulo, Brazil
dc.description.affiliationUniv Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo, SP, Brazil
dc.description.affiliationUniv Paris Saclay, CNRS, CEA, Inst Phys Theor, F-91191 Gif Sur Yvette, France
dc.description.affiliationStanford Univ, SLAC Nacl Acelerator Lab, Stanford, CA 94309 USA
dc.description.affiliationUnifespUniv Fed Sao Paulo, BR-01302907 Sao Paulo, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipCNPq
dc.description.sponsorshipFAPESP
dc.description.sponsorshipIDCNPq: 310759/2016-1
dc.description.sponsorshipIDCNPq: 311524/2016-8
dc.description.sponsorshipIDFAPESP: 12/50984-4
dc.description.sponsorshipIDFAPESP: 17/07278-5
dc.format.extent-
dc.identifierhttp://dx.doi.org/10.1103/PhysRevC.97.044902
dc.identifier.citationPhysical Review C. College Pk, v. 97, n. 4, p. -, 2018.
dc.identifier.doi10.1103/PhysRevC.97.044902
dc.identifier.fileWOS000429210800001.pdf
dc.identifier.issn2469-9985
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/55643
dc.identifier.wosWOS:000429210800001
dc.language.isoeng
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review C
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleUpdate on J/psi regeneration in a hadron gasen
dc.typeinfo:eu-repo/semantics/article
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