221 research outputs found
Properties of baryonic, electric and strangeness chemical potentials and some of their consequences in relativistic heavy ion collisions
Analytic expressions are given for the baryonic, electric and strangeness
chemical potentials which explicitly show the importance of various terms.
Simple scaling relations connecting these chemical potentials are found.
Applications to particle ratios and to fluctuations and related thermal
properties such as the isothermal compressibility kappaT are illustrated. A
possible divergence of kappaT is discussed
Obtaining the Specific Heat of Hadronic Matter from CERN/RHIC Experiments
The specific heat of hot hadronic matter is related to particle production
yields from experiments done at CERN/RHIC. The mass fluctuation of excited
hadrons plays an important role. Connections of the specific heat, mean
hadronic mass excited and its fluctuation with properties of baryon and
electric chemical potentials (value, slope and curvature) are also developed. A
possible divergence of the specific heat as 1/(To-T)^2 is discussed. Some
connections with net charge fluctuations are noted.Comment: 10 page
Properties of the specific heat and chemical potentials of hadronic matter from CERN/RHIC experiments at relativistic and ultrarelativistic collision energies
The specific heat, mean hadronic mass excited and its fluctuation are connected to particle production yields and properties of baryon and electric charge chemical potentials (value, slope and curvature). A possible divergence of the specific heat as 1/(T0-T)2 is discussed. A Hagedorn model with rho~m-tauexp(betahm) is studied and restriction on tau are analyzed. Limitations imposed by a Q-g transition are mentioned
Critical Exponents and Particle Multiplicity Distributions in High Energy Collisions
Data from the L3, Tasso, Opal and Delphi collaborations are analyzed in terms
of a statistical model of high energy collisions. The model contains a power
law critical exponent tau and Levy index alpha. These data are used to study
values of tau and alpha. The very high multiplicity events in L3, Opal and
Delphi are consistent with a model based on a Feynman-Wilson gas which has a
tail exponent tau=3/2 and alpha=1/2.Comment: 10 pages, new table adde
Exact methods for Campi plots
We introduce for canonical fragmention models an exact method for computing
expectation values which exclude the largest cluster. This method allows for
the computation of the reduced multiplicity and other quantities of interest
introduced by Campi, and a comparison shows that the percolation model and a
recent canonical model differ mostly only in small respects in these ensemble
averages.Comment: 7 pages, revtex 3.0, 2 figs. available on reques
- …