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SUMMARY:Chemical freeze-out curve in heavy-ion collisions and the QCD crit
 ical point
DTSTART;VALUE=DATE-TIME:20240925T134000Z
DTEND;VALUE=DATE-TIME:20240925T140000Z
DTSTAMP;VALUE=DATE-TIME:20260518T025154Z
UID:indico-contribution-316@indico.bitp.kiev.ua
DESCRIPTION:Speakers: Artemiy Lysenko (Bogolyubov Institute of Theoretical
  Physics)\nThe chemical freeze-out curve in heavy-ion collisions is invest
 igated in the context of QCD critical point (CP) search at finite baryon d
 ensities. Taking the hadron resonance gas picture at face value\, chemical
  freeze-out points at a given baryochemical potential provide a lower boun
 d on the possible temperature of the QCD CP. We first verify that the free
 ze-out data in heavy-ion collisions are well described by a constant energ
 y per particle curve\, $E/N = \\rm const$\, under strangeness neutrality c
 onditions ($\\mu_S \\neq 0$\, $\\mu_Q \\neq 0$). We then evaluate the hypo
 thetical freeze-out curve based on this criterion in the absence of strang
 eness neutrality ($\\mu_S = 0$\, $\\mu_Q = 0$) and confront it with recent
  predictions on the CP location. We find that recent estimates based on Ya
 ng-Lee edge singularities from lattice QCD data on coarse lattices place t
 he CP significantly below the freeze-out curve and are thus disfavored by 
 the heavy-ion data. On the other hand\, predictions based on functional me
 thods and holography place the CP slightly above the freeze-out curve\, in
 dicating that the QCD CP may be located very close to the chemical freeze-
 out in A+A collisions at $\\sqrt{s_{NN}} = 3.5\\div5$ GeV. \n\nThe report 
 is based on a recently published article: https://arxiv.org/abs/2408.06473
 \n\nhttps://indico.bitp.kiev.ua/event/13/contributions/316/
LOCATION:Bogolyubov Institute for Theoretical Physics (Section 1-4)\, Inst
 itute of Mathematics (Section 5) 322
URL:https://indico.bitp.kiev.ua/event/13/contributions/316/
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