Update on J/psi regeneration in a hadron gas

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dc.contributor.author Abreu, L. M.
dc.contributor.author Khemchandani, Kanchan Pradeepkumar [UNIFESP]
dc.contributor.author Torres, A. Martinez
dc.contributor.author Navarra, F. S.
dc.contributor.author Nielsen, M.
dc.date.accessioned 2020-07-20T16:31:01Z
dc.date.available 2020-07-20T16:31:01Z
dc.date.issued 2018
dc.identifier http://dx.doi.org/10.1103/PhysRevC.97.044902
dc.identifier.citation Physical Review C. College Pk, v. 97, n. 4, p. -, 2018.
dc.identifier.issn 2469-9985
dc.identifier.uri https://repositorio.unifesp.br/handle/11600/55643
dc.description.abstract In 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.sponsorship CNPq
dc.description.sponsorship FAPESP
dc.format.extent -
dc.language.iso eng
dc.publisher Amer Physical Soc
dc.relation.ispartof Physical Review C
dc.rights Acesso aberto
dc.title Update on J/psi regeneration in a hadron gas en
dc.type Artigo
dc.description.affiliation Univ Fed Bahia, Inst Fis, Campus Univ Ondina, BR-40170115 Salvador, BA, Brazil
dc.description.affiliation Univ Fed Sao Paulo, BR-01302907 Sao Paulo, Brazil
dc.description.affiliation Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo, SP, Brazil
dc.description.affiliation Univ Paris Saclay, CNRS, CEA, Inst Phys Theor, F-91191 Gif Sur Yvette, France
dc.description.affiliation Stanford Univ, SLAC Nacl Acelerator Lab, Stanford, CA 94309 USA
dc.description.affiliationUnifesp Univ Fed Sao Paulo, BR-01302907 Sao Paulo, Brazil
dc.description.sponsorshipID CNPq: 310759/2016-1
dc.description.sponsorshipID CNPq: 311524/2016-8
dc.description.sponsorshipID FAPESP: 12/50984-4
dc.description.sponsorshipID FAPESP: 17/07278-5
dc.identifier.file WOS000429210800001.pdf
dc.identifier.doi 10.1103/PhysRevC.97.044902
dc.description.source Web of Science
dc.identifier.wos WOS:000429210800001
dc.coverage College Pk
dc.citation.volume v. 97
dc.citation.issue 4



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