Entropy production and effective viscosity in heavy-ion collisions
نویسندگان
چکیده
منابع مشابه
Confinement and Entropy in Heavy Ion Collisions
In heavy ion collisions the evolution of hadronic fireball was successfully described by the hadrochemical model [1]. This model is based on elementary processes in which hadronhadron collisions lead to the production of other type of hadrons. The time-evolution of the hadronic system was described by a set of coupled differential equations in which the time-dependent gain and loss terms were d...
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which is central in a thermodynamical description. Out of four observables entering above equation (energy E, multiplicity n and temperature T ), the entropy S is most difficult to directly measure in experiment. In this talk the recent proposal to determine entropy experimentally is discussed [1]. The Boltzmann relation S(E, n) = log Γ(E, n) reduces the problem to measuring the density of stat...
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The production of d′ dibaryons in heavy ion collisions due to the elementary process NN → d′π is considered. The NN → d′π cross section is estimated using the vacuum d′ width Γd′ ≈ 0.5 MeV extracted from data on the double charge exchange reactions on nuclei. The d′ production rate per single collision of heavy ions is estimated at an incident beam energy of 1 A·GeV within the framework of the ...
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In the last years, there has been a lot of interest in the description of electron-nucleus collisions at high energies. The results of current analysis show that future electronnucleus colliders at HERA and RHIC, probably could determine whether parton distributions saturate and constraint the behavior of the nuclear gluon distribution in the full kinematical range . However, until these collid...
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ژورنال
عنوان ژورنال: The European Physical Journal A
سال: 2016
ISSN: 1434-6001,1434-601X
DOI: 10.1140/epja/i2016-16367-7