Indications for cluster melting from forward-backward charge fluctuations at RHIC energies

  • We study forward-backward charge fluctuations to probe the correlations among produced particles in ultra relativistic heavy ion collisions. We develop a model that describes the forward-backward dynamical fluctuations and apply it to interpret the recent PHOBOS data. Within the present model, the dynamical fluctuations are related to the particle production mechanism via cluster decay and to long range correlations between the forward and backward rapidity hemispheres. We argue that with a tight centrality cut, PHOBOS may see a strong decrease of the dynamical fluctuations. Within the present model, this deterioration of the correlation among the produced hadrons can be interpreted as a sign for the production of a hot, dense and interacting medium.

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Author:Mohamed Abdel-Aziz, Marcus BleicherORCiDGND
Document Type:Preprint
Date of Publication (online):2006/06/14
Year of first Publication:2006
Publishing Institution:Universit├Ątsbibliothek Johann Christian Senckenberg
Release Date:2006/06/14
Tag:event-by-event fluctuations; relativistic heavy ions
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
PACS-Classification:20.00.00 NUCLEAR PHYSICS / 24.00.00 Nuclear reactions: general / 24.60.-k Statistical theory and fluctuations
20.00.00 NUCLEAR PHYSICS / 24.00.00 Nuclear reactions: general / 24.60.-k Statistical theory and fluctuations / 24.60.Ky Fluctuation phenomena
20.00.00 NUCLEAR PHYSICS / 25.00.00 Nuclear reactions: specific reactions / 25.75.-q Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions) / 25.75.Ld Collective flow
Licence (German):License LogoDeutsches Urheberrecht