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Investigation of the final hadronic state properties of ultra-relativistics pp and Au+Au collisions supplies information on freeze-out conditions at RHIC and possible insights into early stages of these collisions. A variety of particle…

Nuclear Experiment · Physics 2009-11-10 Olga Barannikova

We evaluate charge diffusion constant of dense and hot hadronic matter based on the molecular dynamical method by using a hadronic collision generator which describes nuclear collisions at energies 10 < E < 100 GeV/A and satisfies detailed…

High Energy Physics - Phenomenology · Physics 2010-12-17 N. Sasaki , O. Miyamura , S. Muroya , C. Nonaka

The hadronic phase space distributions calculated with the transport model RQMD for central S(200 AGeV) on S and Pb(160AGeV) on Pb collisions are analyzed to study the deviations from ideal hydrodynamical evolution. After the preequilibrium…

Nuclear Theory · Physics 2009-10-28 H. Sorge

Mean-field model quantum field theories of hadrons were traditionally developed to describe cold and dense nuclear matter and are by now very well constrained from the recent neutron star merger observations. We show that when augmented…

High Energy Physics - Phenomenology · Physics 2023-03-08 Aman Abhishek , Sayantan Sharma

Thermal model fit indicates early chemical freeze-out of multi-strange hadrons with small collective velocities at 200AGeV Au-Au collisions at RHIC. In this work, we present our recent results by SPheRIO hydrodynamical calculations inspired…

Nuclear Theory · Physics 2007-09-07 Wei-Liang Qian , Rone Andrade , Frederique Grassi , Yogiro Hama , Takeshi Kodama

One of the fundamental objectives of experiments with ultrarelativistic heavy ions is to explore strongly interacting matter at high density and high temperature. In this investigation we study in particular the information which can be…

High Energy Physics - Phenomenology · Physics 2014-11-20 S. Vogel , J. Aichelin , M. Bleicher

I)The production of multiple strange baryons in pp interactions is studied. Here on can directly probe the microscopic decay of color flux tubes, allowing to differentiate between different string models and a statistical description of the…

High Energy Physics - Phenomenology · Physics 2009-11-07 Marcus Bleicher

The hydrokinetic model and the scheme of dynamical freeze out proposed earlier for the RHIC energy are extended to lower colliding energy for non-vanishing baryon chemical potential. In this case a new two-phase equation of state is applied…

Nuclear Theory · Physics 2010-12-13 Iu. A. ~Karpenko , A. S. ~Khvorostukhin , V. D. ~Toneev , Yu. M. ~Sinyukov

Detailed knowledge of the hadronic spectrum is still an open question, which has phenomenological consequences on the study of heavy-ion collisions. A previous lattice QCD study concluded that additional strange resonances are missing in…

High Energy Physics - Phenomenology · Physics 2020-07-16 P. Alba , V. Mantovani Sarti , J. Noronha-Hostler , P. Parotto , I. Portillo-Vazquez , C. Ratti , J. M. Stafford

We investigate relative hadron yield production of various like and unlike mass particles in ultra-relativistic heavy ion collisions by employing a statistical thermal model with finite-sized baryons (antibaryons) to imitate the hard-core…

High Energy Physics - Phenomenology · Physics 2024-08-06 Sameer Ahmad Mir , Nasir Ahmad Rather , Iqbal Mohi Ud Din , Saeed Uddin

A phenomenological model of dark energy that tracks the baryonic and cold dark matter at early times but resembles a cosmological constant at late times is explored. In the transition between these two regimes, the dark energy density drops…

Cosmology and Nongalactic Astrophysics · Physics 2013-11-13 Jannis Bielefeld , W. L. Kimmy Wu , Robert R. Caldwell , Olivier Dore

We study the importance of the initial state, baryon stopping and baryon number transport for the dynamical evolution of a strongly interacting system produced in heavy ion collisions. We employ a hybrid model, which combines the fluid…

Nuclear Theory · Physics 2013-05-30 J. Steinheimer , V. Koch , M. Bleicher

The hadron resonance gas model with hadron-type dependent eigenvolume corrections is employed to fit the hadron yield data of the NA49 collaboration for central Pb+Pb collisions at the c.m. energy per nucleon pair Ecm=6.3, 7.6, 8.8, 12.3,…

High Energy Physics - Phenomenology · Physics 2016-06-22 V. Vovchenko , M. I. Gorenstein , L. M. Satarov , H. Stoecker

We use Bayesian analysis in order to constrain the equation of state for nuclear matter from astrophysical data related to the recent measurements from the NICER mission, LIGO/Virgo collaboration, and probability distributions of mass and…

Nuclear Theory · Physics 2023-09-11 B. A. de Moura S. , C. H. Lenzi , O. Lourenço , M. Dutra

We analyze hadro-chemical freeze-out in central Pb+Pb collisions at CERN SPS energies, employing the hybrid version of UrQMD which models hadronization by the Cooper-Frye mechanism, and matches to a final hadron-resonance cascade. We fit…

High Energy Physics - Phenomenology · Physics 2012-04-24 F. Becattini , M. Bleicher , T. Kollegger , M. Mitrovski , T. Schuster , R. Stock

The transverse momentum spectra of identified particles at midrapidity in Pb + Pb collisions at Root(sNN) = 2.76 TeV have been studied as a function of collision centrality by using a unified statistical thermal freeze-out model. The…

High Energy Physics - Phenomenology · Physics 2015-10-28 Saeed Uddin , Inam-ul Bashir , Riyaz Ahmed Bhat

We investigate the effects of finite baryon chemical potential on the transport properties of a hadron resonance gas. We find that a hadron resonance gas with large baryon number density is closer to the ideal fluid limit than the…

Nuclear Theory · Physics 2015-06-16 Gabriel S. Denicol , Charles Gale , Sangyong Jeon , Jorge Noronha

We calculate the mean and variance of net-baryon number and net-electric charge distributions from Quantum Chromodynamics (QCD) using a next-to-leading order Taylor expansion in terms of temperature and chemical potentials. We compare these…

We evaluate thermodynamical quantities and transport coefficients of a dense and hot hadronic matter based on an event generator URASiMA (Ultra-Relativistic AA collision Simulator based on Multiple Scattering Algorithm). The statistical…

Nuclear Theory · Physics 2009-11-06 N. Sasaki , O. Miyamura , S. Muroya , C. Nonaka

The Large Hadron Collider at CERN will provide Pb-Pb collisions at energies up to $\sqrt{s_{NN}}$ = 5.5 TeV. We speculate on global observables, i.e. the charged particle density at mid-rapidity, chemical freeze-out conditions and…

Nuclear Experiment · Physics 2009-01-16 K. Schweda