scholarly journals Observation of Gaussian Pseudorapidity Distributions for Produced Particles in Proton-Nucleus Collisions at Tevatron Energies

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Abdurakhmanov Ulugbek ◽  
Gulamov Kadyr ◽  
Lugovoi Vladimir ◽  
Navotny Vadim
Keyword(s):  
Phase Transition ◽  
Energy Density ◽  
Average Multiplicity ◽  
Tube Model ◽  
Event Analysis ◽  
Qcd Phase Transition ◽  
Central Collisions ◽  
Inelastic Interactions ◽  
Pseudorapidity Distributions

The statistical event-by-event analysis of inelastic interactions of protons in emulsion at 800 GeV reveals the existence of group of events with Gaussian pseudorapidity distributions for produced particles, as suggested by hydrodynamic-tube model. Events belong to very central collisions of protons with heavy emulsion nuclei with probability of realization of less than 1% and with multiplicity of shower particles exceeding (2-3 times) the average multiplicity in proton-nucleus collisions in emulsion. Bjorken’s energy density for these events reaches 2.0 GeV per fm3. The data are interpreted as a result of the QCD phase transition in proton-tube collisions at Tevatron energies.

scholarly journals Formation of droplets with high baryon density at the QCD phase transition in expanding matter

2014 ◽  
Vol 925 ◽  
pp. 14-24 ◽  
Author(s):  
Christoph Herold ◽  
Marlene Nahrgang ◽  
Igor Mishustin ◽  
Marcus Bleicher
Keyword(s):  
Phase Transition ◽  
Baryon Density ◽  
Qcd Phase Transition

scholarly journals Influence of an inhomogeneous and expanding medium on signals of the QCD phase transition

2013 ◽  
Vol 904-905 ◽  
pp. 899c-902c ◽  
Author(s):  
Marlene Nahrgang ◽  
Christoph Herold ◽  
Marcus Bleicher
Keyword(s):  
Phase Transition ◽  
Qcd Phase Transition

scholarly journals QCD phase transition with strange quark in Wilson formalism for fermions

1996 ◽  
Vol 71 (2) ◽  
pp. 343-346 ◽  
Author(s):  
Y. Iwasaki ◽  
K. Kanaya ◽  
S. Kaya ◽  
S. Sakai ◽  
T. Yoshié
Keyword(s):  
Phase Transition ◽  
Strange Quark ◽  
Qcd Phase Transition

A Quenched Study for QCD Phase-Transition on Anisotropic Lattices

2009 ◽  
Vol 52 (4) ◽  
pp. 665-670
Author(s):  
Meng Xiang-Fei ◽  
Chen Ying ◽  
Liu Yu-Bin
Keyword(s):  
Phase Transition ◽  
Qcd Phase Transition ◽  
Anisotropic Lattices

Explore the QCD phase transition phenomena from a multiphase transport model

2018 ◽  
Vol 62 (1) ◽  
Author(s):  
XiaoHai Jin ◽  
JinHui Chen ◽  
ZiWei Lin ◽  
GuoLiang Ma ◽  
YuGang Ma ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transport Model ◽  
Multiphase Transport ◽  
Qcd Phase Transition

scholarly journals Dynamic Enhancement of Fluctuation Signals at the QCD Phase Transition

2013 ◽  
Author(s):  
Marlene Nahrgang ◽  
Christoph Herold ◽  
Igor Mishustin ◽  
Marcus Bleicher
Keyword(s):  
Phase Transition ◽  
Qcd Phase Transition ◽  
Dynamic Enhancement

scholarly journals Finite density QCD phase transition in the heavy quark mass region

2012 ◽  
Author(s):  
Hana Saito ◽  
Sinya Aoki ◽  
K. Kanaya ◽  
Hiroshi Ohno ◽  
S. Ejiri ◽  
...  
Keyword(s):  
Phase Transition ◽  
Heavy Quark ◽  
Quark Mass ◽  
Mass Region ◽  
Finite Density ◽  
Qcd Phase Transition ◽  
Heavy Quark Mass

scholarly journals QCD PHASE TRANSITION IN DGP BRANE COSMOLOGY

2012 ◽  
Vol 21 (08) ◽  
pp. 1250069 ◽  
Author(s):  
K. ATAZADEH ◽  
A. M. GHEZELBASH ◽  
H. R. SEPANGI
Keyword(s):  
Phase Transition ◽  
Energy Density ◽  
Early Universe ◽  
Effective Temperature ◽  
Quark Gluon Plasma ◽  
Friedmann Equation ◽  
Gluon Plasma ◽  
High Energy ◽  
Brane World ◽  
High Energy Density

In the standard picture of cosmology it is predicted that a phase transition, associated with chiral symmetry breaking after the electroweak transition, has occurred at approximately 10μ seconds after the Big Bang to convert a plasma of free quarks and gluons into hadrons. We consider the quark-hadron phase transition in a Dvali, Gabadadze and Porrati (DGP) brane world scenario within an effective model of QCD. We study the evolution of the physical quantities useful for the study of the early universe, namely, the energy density, temperature and the scale factor before, during and after the phase transition. Also, due to the high energy density in the early universe, we consider the quadratic energy density term that appears in the Friedmann equation. In DGP brane models such a term corresponds to the negative branch (ϵ = -1) of the Friedmann equation when the Hubble radius is much smaller than the crossover length in 4D and 5D regimes. We show that for different values of the cosmological constant on a brane, λ, phase transition occurs and results in decreasing the effective temperature of the quark-gluon plasma and of the hadronic fluid. We then consider the quark-hadron transition in the smooth crossover regime at high and low temperatures and show that such a transition occurs along with decreasing the effective temperature of the quark-gluon plasma during the process of the phase transition.

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