η production in nucleus-nucleus collisions as a probe of chiral dynamics

Giorgio Torrieri
Phys. Rev. C 98, 014901 – Published 5 July 2018

Abstract

I argue that, because of the peculiar properties of the η 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 η 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 η/π ratio depending strongly on impact parameter might be a good indication of chiral effects, either from vorticity or topological phases of QCD.

  • Figure
  • Figure
  • Received 28 February 2018
  • Revised 27 May 2018

DOI:https://doi.org/10.1103/PhysRevC.98.014901

©2018 American Physical Society

Physics Subject Headings (PhySH)

Nuclear PhysicsParticles & Fields

Authors & Affiliations

Giorgio Torrieri*

  • IFGW, State University of Campinas, Brazil

  • *torrieri@ifi.unicamp.br

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Vol. 98, Iss. 1 — July 2018

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