scholarly journals Relation between baryon number fluctuations and experimentally observed proton number fluctuations in relativistic heavy ion collisions

2012 ◽  
Vol 86 (2) ◽  
Author(s):  
Masakiyo Kitazawa ◽  
Masayuki Asakawa
Keyword(s):  
Heavy Ion Collisions ◽  
Baryon Number ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Proton Number ◽  
Ion Collisions

Baryon number cumulants and proton number cumulants in relativistic heavy ion collisions

Open Physics ◽  
2012 ◽  
Vol 10 (6) ◽  
Author(s):  
Masayuki Asakawa
Keyword(s):  
Heavy Ion Collisions ◽  
Baryon Number ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Proton Number ◽  
Ion Collisions ◽  
Hadron Phase

AbstractBaryon number cumulants are invaluable tools to diagnose the primordial stage of heavy ion collisions. In experiments, however, proton number cumulants have been measured as substitutes. In fact, proton number fluctuations are further modified in the hadron phase and different from those of baryon number. We give formulas that express the baryon number cumulants solely in terms of proton number fluctuations, which are experimentally observable.

scholarly journals Probing the QCD chiral cross-over transition in heavy ion collisions

Open Physics ◽  
2012 ◽  
Vol 10 (6) ◽  
Author(s):  
Krzysztof Redlich
Keyword(s):  
Heavy Ion Collisions ◽  
Probability Distributions ◽  
Star Collaboration ◽  
Baryon Number ◽  
Heavy Ion ◽  
Baryon Density ◽  
Functional Renormalization Group ◽  
Proton Number ◽  
Ion Collisions ◽  
Renormalization Group Approach

AbstractWe argue that by measuring higher moments of the net proton number fluctuations in heavy ion collisions (HIC) one can probe the QCD chiral cross-over transition experimentally. We discuss the properties of fluctuations of the net baryon number in the vicinity of the chiral cross-over transition within the Polyakov loop extended quark-meson model at finite temperature and baryon density. The calculation includes non-perturbative dynamics implemented within the functional renormalization group approach. We find a clear signal for the chiral cross-over transition in the fluctuations of the net baryon number. We address our theoretical findings to experimental data of the STAR Collaboration on energy and centrality dependence of the net proton number fluctuations and their probability distributions in HIC.

PHYSICS OF STRANGE MATTER FOR RELATIVISTIC HEAVY-ION COLLISIONS

1996 ◽  
Vol 05 (02) ◽  
pp. 239-300 ◽  
Author(s):  
CARSTEN GREINER ◽  
JÜRGEN SCHAFFNER
Keyword(s):  
Heavy Ion Collisions ◽  
Strange Quark ◽  
Baryon Number ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Strange Quark Matter ◽  
Hadronic Matter ◽  
Relativistic Heavy Ion Collisions ◽  
Stable States ◽  
Ion Collisions

Relativistic heavy-ion collisions offer the possibility to produce exotic metastable or even absolutely stable states of nuclear matter containing (roughly) equal number of strangeness compared to the baryon number: Strangelets, small pieces of strange quark matter, were proposed as a signal of quark-gluon plasma formation. As their hadronic counterpart, also small pieces of strange hadronic matter may also show up with rather similar properties. The reasoning of both their stability and existence, the possible separation of strangeness necessary for their formation, and the chances for their detection, are reviewed.

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