128 citations · 1.2k across the 64 of their papers we have counts for
38 papers · 1 filter
Hadronization within the Non-Extensive Approach and the Evolution of the Parameters
Keming Shen, Gergely Gábor Barnaföldi, Tamás Sándor Biró
We review transverse momentum distributions of various identified charged particles stemming from high energy collisions fitted by various non-extensive distributions as well as by…
Entropy Production During Hadronization of a Quark-Gluon Plasma
Tamas S. Biro, Zsolt Schram, Laszlo Jenkovszky
We revisit the physical pictures for the hadronization of quark-gluon plasma, concentrating on the problem of entropy production during processes where the number of degrees of fre…
Systematic Analysis of the Non-extensive Statistical Approach in High Energy Particle Collisions - Experiment vs. Theory
Gábor Bíró, Gergely Gábor Barnaföldi, Tamás Sándor Biró +2
The analysis of high-energy particle collisions is an excellent testbed for the non-extensive statistical approach. In these reactions we are far from the thermodynamical limit. In…
Different Non-extensive Models for heavy-ion collisions
Keming Shen, Tamas S. Biro, Enke Wang
The transverse momentum () spectra from heavy-ion collisions at intermediate momenta are described by non-extensive statistical models. Assuming a fixed relative variance of t…
Initial-State Bremsstrahlung versus Final-State Hydrodynamic Sources of Azimuthal Harmonics in p+A at RHIC and LHC
Miklos Gyulassy, Peter Levai, Ivan Vitev +1
Recent pT<2~GeV azimuthal correlation data from the Beam Energy Scan (BES) and D+Au runs at RHIC/BNL and, especially, the surprising similarity of azimuthal ``tran…
Illusory Flow in Radiation from Accelerating Charge
Tamas S. Biro, Zsuzsanna Szendi, Zsolt Schram
In this paper we analyze the classical electromagnetic radiation of an accelerating point charge moving on a straight line trajectory. Depending on the duration of accelerations, r…
Thermodynamic Derivation of the Tsallis and Rényi Entropy Formulas and the Temperature of Quark-Gluon Plasma
T. S. Biró, G. G. Barnaföldi, P. Ván
We derive Tsallis entropy, Sq, from universal thermostat independence and obtain the functional form of the corresponding generalized entropy-probability relation. Our result for f…
Pion Production Via Resonance Decay in a Non-extensive Quark-Gluon Medium with Non-additive Energy Composition Rule
Karoly Urmossy, Tamas S. Biro, Gergely G. Barnaföldi
Resonance production and decay into pion pairs is simulated in a non-extensive quark matter with multi-particle interactions. Final state pion spectra are found to take the form of…
Non-Extensive Black Hole Thermodynamics Estimate for Power-Law Particle Spectra
Tamas S. Biro
We point out that by considering the Hawking-Bekenstein entropy of Schwarzschild black hole horizons as a non-extensive Tsallis entropy, its additive formal logarithm, coinciding w…
Cooper-Frye Formula and Non-extensive Coalescence at RHIC Energy
K. Urmossy, T. S. Biro
Transverse spectra are calculated for various types of hadrons stemming from Au Au collisions at GeV. We utilize a quark recombination model based on generalized Bol…
Pions and kaons from stringy quark matter
T. S. Biro, K. Urmossy
Different hadron transverse momentum spectra are calculated in a non-extensive statistical, quark-coalescence model. For the low-pT part a gluonic string contribution is conjecture…
Non-extensive equilibration in relativistic matter
T. S. Biro, G. Purcsel
We present a view of the non-extensive thermodynamics based on general composition rules. A formal logarithm maps these rules to the addition, which can be used to generate station…
Pion and Kaon Spectra from Distributed Mass Quark Matter
T. S. Biro, K. Urmossy, G. G. Barnafoldi
After discussing some hints for possible masses of quasiparticles in quark matter on the basis of lattice equation of state, we present pion and kaon transverse spectra obtained by…
The hadronization line in stringy matter
Tamas S. Biro, Jean Cleymans
Using the equation of state of the string model with linear strings comes close to describing the lattice QCD results and offers an explanation for the E/N = 1 GeV hadronization co…
Mass gap from pressure inequalities
Tamas S. Biro, Andras Laszlo, Peter Van
We prove that a temperature independent mass distribution is identically zero below a mass threshold (mass gap) value, if the pressure satisfies certain inequalities. This supports…
Entropy of expanding QCD matter
Tamas S Biro, Jozsef Zimanyi
Using the lattice QCD equation of state for an isentropically expanding fireball we follow the evolution of the effective number of particles in an ideal gas pV/T. This number redu…
The mass distribution of quark matter
T. S. Biro, P. Levai, P. Van +1
We analyze lattice QCD results on the equation of state in terms of infinitely many non-interacting massive ideal gas components. We find that the entire pressure-temperature curve…
Equation of state for distributed mass quark matter
T. S. Biro, P. Levai, P. Van +1
We investigate how the QCD equation of state can be reconstructed by a continous mass distribution of non-interacting ideal components. We find that adjusting the mass scale as a f…
Extensive Renyi Statistics from Non-Extensive Entropy
A. S. Parvan, T. S. Biro
We show that starting with either the non-extensive Tsallis entropy in Wang's formalism or the extensive Renyi entropy, it is possible to construct the equilibrium statistical mech…
Power-law tails from multiplicative noise
Tamas S. Biro, Antal Jakovac
We show that the well-known Langevin equation, modeling the Brownian motion and leading to a Gaussian stationary distribution of the corresponding Fokker-Planck equation, is change…
A Non-Extensive Model for Quark Matter Produced in Heavy Ion Collisions
T. S. Biro, G. Purcsel
We describe quark matter in the framework of non-extensive thermodynamics. We point out that partcile spectra with power-law tail lead to an increased energy and entropy per partic…
How low is the thermodynamical limit?
Tamas S. Biro, Gabor Purcsel, Berndt Muller
We analyze how can some dynamical process lead to (almost) exponential distribution of hadrons without instantaneous equipartition with a heat bath. We present a model for parton d…
Almost exponential transverse spectra from power law spectra
Tamas S. Biro, Berndt Muller
We point out that exponential shape of transverse spectra can be obtained as the Fourier transform of the limiting distribution of randomly positioned partons with power law spectr…
Faces of quark matter
J. Zimanyi, P. Levai, T. S. Biro
Based on an analysis in the framework of a coalescence hadronization model (ALCOR) we conclude that in heavy ion collisions at CERN SPS and RHIC energies a new type of matter, the…