scholarly journals Search for the QCD Critical Point with Fluctuations of Conserved Quantities in Relativistic Heavy-Ion Collisions at RHIC

2017 ◽  
Vol 141 ◽  
pp. 04001 ◽  
Author(s):  
Xiaofeng Luo
Keyword(s):  
Critical Point ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Conserved Quantities ◽  
Qcd Critical Point ◽  
Ion Collisions

scholarly journals Finite-size behaviour of a critical related observable

Open Physics ◽  
2012 ◽  
Vol 10 (6) ◽  
Author(s):  
Wu Yuanfang ◽  
Chen Lizhu ◽  
Pan Xue ◽  
Shao Ming ◽  
Xiaosong Chen
Keyword(s):  
Fixed Point ◽  
Heavy Ion Collisions ◽  
Finite Size ◽  
System Size ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Charge Fluctuations ◽  
Qcd Critical Point ◽  
Ion Collisions ◽  
Straight Line

AbstractAccounting for the influence of system size in relativistic heavy ion collisions, the finite-size form of a critical related observable is suggested. The fixed-point and straight line methods are proposed in exploring the QCD critical point and phase boundary in relativistic heavy ion collisions. As an application, the finitesize behaviour of the ratios of higher net-proton cumulants, dynamical electric charge fluctuations, and transverse momentum correlations in Au + Au collisions at RHIC are examined.

scholarly journals Searching for the QCD Critical Point with Net-Proton Number Fluctuations

2019 ◽  
Vol 64 (8) ◽  
pp. 766
Author(s):  
M. Szymański ◽  
M. Bluhm ◽  
K. Redlich ◽  
C. Sasaki
Keyword(s):  
Experimental Data ◽  
Critical Point ◽  
Beam Energy ◽  
Star Collaboration ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Critical Mode ◽  
Qcd Critical Point ◽  
Proton Number ◽  
Ion Collisions

Net-proton number fluctuations can be measured experimentally and, hence, provide a source of important information about the matter created during relativistic heavy ion collisions. Particularly, they may give us clues about the conjectured QCD critical point. In this work, the beam-energy dependence of ratios of the first four cumulants of the net-proton number is discussed. These quantities are calculated using a phenomenologically motivated model in which critical mode fluctuations couple to protons and antiprotons. Our model qualitatively captures both the monotonic behavior of the lowest-order ratio, as well as the non-monotonic behavior of higher-order ratios, as seen in the experimental data from the STAR Collaboration. We also discuss the dependence of our results on the coupling strength and the location of the critical point.

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