Anomalous multiplicity fluctuations from phase transitions in heavy ion collisions

Jun, 2000
4 pages
Published in:
  • Phys.Rev.C 63 (2001) 064904
e-Print:

Citations per year

200020062012201820240246810
Abstract:
Event-by-event fluctuations and correlations between particles produced in relativistic nuclear collisions are studied. The fluctuations in positive, negative, total and net charge are closely related through correlations. In the event of a phase transitions to a quark-gluon plasma, fluctuations in total and net charge can be enhanced and reduced respectively which, however, is very sensitive to the acceptance and centrality. If the colliding system experiences strong density fluctuations due, e.g., to droplet formation in a first-order phase transition, all fluctuations can be enhanced substantially. The importance of fluctuations and correlations is exemplified by event-by-event measurement of the multiplicities of J/ΨJ/\Psi's and charged particles since these observables should anti-correlate in the presence of co-mover or anomalous absorption.
  • scattering: heavy ion
  • charged particle: multiple production
  • positive particle: multiplicity
  • negative particle: multiplicity
  • multiplicity: fluctuation
  • multiplicity: correlation
  • nuclear reaction: model
  • quark gluon: plasma
  • critical phenomena
  • model: thermodynamical