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eta ' production in nucleus-nucleus collisions as a probe of chiral dynamics

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Autor(es):
Torrieri, Giorgio
Número total de Autores: 1
Tipo de documento: Artigo Científico
Fonte: PHYSICAL REVIEW C; v. 98, n. 1, p. 6-pg., 2018-07-05.
Resumo

I argue that, because of the peculiar properties of the eta' meson, it is a promising probe of chiral dynamics. In particular, I show that a rotating gluon-dominated plasma might lead to an enhanced production of eta' with respect to statistical model expectations. The presence of a strong topological susceptibility might give a similar effect. In both cases, unlike the statistical model, I expect a nontrivial dependence on event geometry, such as initial volume and impact parameter. Hence, an observation of eta'/pi ratio depending strongly on impact parameter might be a good indication of chiral effects, either from vorticity or topological phases of QCD. (AU)

Processo FAPESP: 17/06508-7 - Desenvolvimento de hidrodinâmica como teoria de campo
Beneficiário:Donato Giorgio Torrieri
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 17/05685-2 - Física hadrônica em colisões nucleares de altas energias
Beneficiário:Jun Takahashi
Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais