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SUMMARY:Evidences of quark-gluon plasma formation in central nuclear colli
 sions
DTSTART;VALUE=DATE-TIME:20161013T124500Z
DTEND;VALUE=DATE-TIME:20161013T130500Z
DTSTAMP;VALUE=DATE-TIME:20260712T091828Z
UID:indico-contribution-684@cern.ch
DESCRIPTION:Speakers: Violetta Sagun (Bogolyubov Institute for Theoretical
  Physics of the National Academy of Sciences of Ukraine)\nBased on the new
  fit of hadron yield ratios within the multicomponent hadron resonance gas
  model we have found several remarkable irregularities at chemical freeze-
 out. In particular\, 121 hadron multiplicity ratios measured in the nucleu
 s-nucleus collisions at AGS\, SPS and RHIC energies were successfully desc
 ribed within the new formulation of HRGM with $\\chi^2/dof \\simeq  63.978
 /65 \\simeq 0.98$.\nA dramatic jump in the center of mass collision energy
   dependence of pressure\, energy density and baryonic charge density in t
 he narrow range between 4.3 and 4.9 GeV  is found. These irregularities ar
 e also accompanied by a sudden increase of  the particle decays at chemica
 l freeze-out which is seen at this collision  energy range. \n\nWe argue t
 hat a strong correlation which we observe between the previously found irr
 egularities and an enhancement of strangeness production can serve as the 
 quark-gluon plasma formation signature. Thus\, we conclude that a dramatic
  change in the system properties seen in the narrow collision energy range
  $\\sqrt{s_{NN}} = 4.3-4.9 $ GeV opens entirely new possibilities for expe
 rimental studies of  quark-gluon plasma properties  at NICA JINR and FAIR 
 GSI accelerators.\n\nhttps://indico.particle.mephi.ru/event/4/contribution
 s/684/
LOCATION:Milan Hotel Vivaldi-Boccerini
URL:https://indico.particle.mephi.ru/event/4/contributions/684/
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