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Evolution of multiplicity fluctuations in heavy ion collisions
Title Evolution of multiplicity fluctuations in heavy ion collisions Author info Radka Sochorová, Boris Tomášik Author Sochorová Radka (50%)
Co-authors Tomášik Boris 1972- (50%) UMBFP06 - Katedra fyziky
Source document PoS proceedings of science : Corfu Summer Institute "School and Workshops on Elementary Particle Physics and Gravity", CORFU2018. Vol. 347 (2018), pp. 1-11. - Trieste : Sissa Medialab, 2018 ; School and workshops on elementary particle physics and gravity Summer Institute "School and Workshops on Elementary Particle Physics and Gravity" Keywords fyzika - physics ťažké ióny chemické reakcie - chemical reactions ultrarelativistické jadrové zrážky Form. Descr. príspevky v zborníku - proceedings papers Language English Country Italy Annotation © Copyright owned by the author(s) under the terms of the Creative Commons. The evolution of multiplicity distribution of a species which undergoes chemical reactions can be described with the help of a master equation. We study the master equation for a fixed temperature, because we want to know how fast different moments of the multiplicity distribution approach their equilibrium value. We particularly look at the 3rd and 4th factorial moments and their equilibrium values from which central moments, cumulants and their ratios can be calculated. Then we study the situation in which the temperature of the system decreases. We find out that in the non-equilibrium state, higher factorial moments differ more from their equilibrium values than the lower moments and that the behaviour of the combination of the central moments depends on the combination we choose. If one chooses to determine the chemical freeze-out temperature from the measured values of higher moments, these effects might j URL Link na zdrojový dokument Public work category AFC No. of Archival Copy 47132 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
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