Update on J/'psi' suppression in relativistic heavy ion collisions (2018)
- Autor:
- Autor USP: NAVARRA, FERNANDO SILVEIRA - IF
- Unidade: IF
- Subjects: COLISÕES DE ÍONS PESADOS RELATIVÍSTICOS; QUARK
- Language: Português
- Abstract: Charmonium suppression has been for a long time considered as a signature of quark gluon plasma formation. However in recent years it has been realized that the QGP dynamics is more complicated. than we thought. The number of charm quarks may become very large and it may be possible that even inside the plasma these quarks recombine to form charm-anticharm bound states. This recombination could even lead to an enhancement of the J=Ã yield. We present an overview of the subject and then discuss some recent results. 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=Ã 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=Ã, which could potentially lead to changes in its multiplicity. We compute the J=Ã production ans absorption cross sections. Using the obtained cross sections as input to solve the rate equation, we conclude that the interactions in the hadron gas phase do not signi¯cantly a®ect the J=Ã abundance.
- Imprenta:
- Source:
- Título do periódico: Resumos
- Conference titles: Brazilian Meeting on Nuclear Physics
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ABNT
NAVARRA, Fernando Silveira. Update on J/'psi' suppression in relativistic heavy ion collisions. 2018, Anais.. São Paulo: Instituto de Física, Universidade de São Paulo, 2018. Disponível em: https://sec.sbfisica.org.br/eventos/rtfnb/xli/programa/trabalhos.asp?sesId=1. Acesso em: 19 abr. 2024. -
APA
Navarra, F. S. (2018). Update on J/'psi' suppression in relativistic heavy ion collisions. In Resumos. São Paulo: Instituto de Física, Universidade de São Paulo. Recuperado de https://sec.sbfisica.org.br/eventos/rtfnb/xli/programa/trabalhos.asp?sesId=1 -
NLM
Navarra FS. Update on J/'psi' suppression in relativistic heavy ion collisions [Internet]. Resumos. 2018 ;[citado 2024 abr. 19 ] Available from: https://sec.sbfisica.org.br/eventos/rtfnb/xli/programa/trabalhos.asp?sesId=1 -
Vancouver
Navarra FS. Update on J/'psi' suppression in relativistic heavy ion collisions [Internet]. Resumos. 2018 ;[citado 2024 abr. 19 ] Available from: https://sec.sbfisica.org.br/eventos/rtfnb/xli/programa/trabalhos.asp?sesId=1 - Pentaquarks in QCD sum rules
- Leading charm production in the interacting gluon model
- Looking for exotic multiquark states in nonleptonic b decays
- Hadronization and inelasticities
- Produção térmica do charmônio
- Quantum contributions for the temporal evolution of non homogeneous configurations of the ''lambda''fi' POT.4' model
- The pomeron-pomeron cross section
- Violation of the Feynman scaling law as a manifestation of nonextensivity
- Exclusive 'rô' and J/'psi' photoproduction in ultraperipheral pA collisions distributions: predictions of the gluon saturation models for the momentum transfer distributions
- Looking for KdV solitons in a cold and magnetized quark gluon plasma
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