Chemical freeze-out parameters of net-kaons in heavy-ion collisions
نویسندگان
چکیده
منابع مشابه
Comparison of chemical freeze-out criteria in heavy-ion collisions
One of the most remarkable results to emerge from heavy-ion collisions over the past two decades is the striking regularity shown by particle yields at all energies. This has led to several very successful proposals describing particle yields over a very wide range of beam energies, reaching from 1A GeV up to 200A GeV, using only one or two parameters. A systematic comparison of these proposals...
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The distributions for strangeness, electric charge and baryon number are explored in heavy ion collisions within the hadron resonance gas model. The proximity of the freeze-out curve to the phase boundary indicates that the QCD phase transition and its related critical properties should be observable in heavy ion collisions. However, an experimental verification of a phase change in a medium cr...
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Based on an evaluation of data on pion interferometry and on particle yields at midrapidity, we propose a universal condition for thermal freeze-out of pions in heavy-ion collisions. We show that freeze-out occurs when the mean free path of pions lambda(f) reaches a value of about 1 fm, which is much smaller than the spatial extent of the system at freeze-out. This critical mean free path is in...
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Hyperon resonances are becoming an extremely useful tool allowing the study of the properties of hadronic fireballs made in heavy ion collisions. Their yield, compared to stable particles with the same quark composition, depends on hadronization conditions. The resonance’s short lifetime makes them ideal probes of the fireball chemical freeze-out mechanisms. An analysis of resonance abundance i...
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We present a determination of freeze-out conditions in heavy ion collisions based on ratios of cumulants of net electric charge fluctuations. These ratios can reliably be calculated in lattice QCD for a wide range of chemical potential values by using a next-to-leading order Taylor series expansion around the limit of vanishing baryon, electric charge and strangeness chemical potentials. From a...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2021
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2020.121865