https://doi.org/10.1140/epja/i2016-16027-0
Regular Article - Theoretical Physics
Multiplicity fluctuations in heavy-ion collisions using canonical and grand-canonical ensemble
1
Discipline of Physics, School of Basic Science, Indian Institute of Technology Indore, Khandwa Road, 452020, Simrol, India
2
Nuclear Physics Division, Bhabha Atomic Research Center, 400085, Mumbai, India
* e-mail: prakhar@rcf.rhic.bnl.gov
Received:
15
December
2015
Accepted:
13
January
2016
Published online:
12
February
2016
We report the higher-order cumulants and their ratios for baryon, charge and strangeness multiplicity in canonical and grand-canonical ensembles in ideal thermal model including all the resonances. When the number of conserved quanta is small, an explicit treatment of these conserved charges is required, which leads to a canonical description of the system and the fluctuations are significantly different from the grand-canonical ensemble. Cumulant ratios of total-charge and net-charge multiplicity as a function of collision energies are also compared in grand-canonical ensemble.
© SIF, Springer-Verlag Berlin Heidelberg, 2016