Net-charge fluctuations in relativistic heavy-ion interactions

2003 ◽  
Vol 68 (3) ◽  
Author(s):  
J. Nystrand ◽  
E. Stenlund ◽  
H. Tydesjö
Keyword(s):  
Heavy Ion ◽  
Net Charge ◽  
Charge Fluctuations ◽  
Ion Interactions

scholarly journals Experimental Results on Charge Fluctuations in Heavy-Ion Collisions

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
D. K. Mishra ◽  
P. Garg ◽  
P. K. Netrakanti ◽  
L. M. Pant ◽  
A. K. Mohanty
Keyword(s):  
Electric Charge ◽  
Heavy Ion Collisions ◽  
Collision Energy ◽  
Heavy Ion ◽  
Experimental Results ◽  
Higher Moments ◽  
Net Charge ◽  
Charge Fluctuations ◽  
Ion Collisions ◽  
Particle Ratios

We present a subset of experimental results on charge fluctuation from the heavy-ion collisions to search for phase transition and location of critical point in the QCD phase diagram. Measurements from the heavy-ion experiments at the SPS and RHIC energies observe that total charge fluctuations increase from central to peripheral collisions. The net-charge fluctuations in terms of dynamical fluctuation measure ν(+-,dyn) are studied as a function of collision energy (sNN) and centrality of the collisions. The product of ν(+-,dyn) and 〈Nch〉 shows a monotonic decrease with collision energies, which indicates that at LHC energy the fluctuations have their origin in the QGP phase. The fluctuations in terms of higher moments of net-proton, net-electric charge, and net-kaon have been measured for various sNN. Deviations are observed in both Sσ and κσ2 for net-proton multiplicity distributions from the Skellam and hadron resonance gas model for sNN<39 GeV. Higher moment results of the net-electric charge and net-kaon do not observe any significant nonmonotonic behavior as a function of collision energy. We also discuss the extraction of the freeze-out parameters using particle ratios and experimentally measured higher moments of net-charge fluctuations. The extracted freeze-out parameters from experimentally measured moments and lattice calculations are found to be in agreement with the results obtained from the fit of particle ratios to the thermal model calculations.

scholarly journals Isospin Effect on Baryon and Charge Fluctuations from the pNJL Model

Universe ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 6
Author(s):  
He Liu ◽  
Jun Xu
Keyword(s):  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Chiral Phase ◽  
Net Charge ◽  
Charge Fluctuations ◽  
Ion Collisions ◽  
Pnjl Model ◽  
Asymmetric Matter ◽  
Lower Collision ◽  
Skewness And Kurtosis

We have studied the possible isospin corrections on the skewness and kurtosis of net-baryon and net-charge fluctuations in the isospin asymmetric matter formed in relativistic heavy-ion collisions at RHIC-BES energies, based on a 3-flavor Polyakov-looped Nambu–Jona–Lasinio model. With typical scalar–isovector and vector–isovector couplings leading to the splitting of u and d quark chiral phase transition boundaries and critical points, we have observed considerable isospin effects on the susceptibilities, especially those of net-charge fluctuations. Reliable experimental measurements at even lower collision energies are encouraged to confirm the observed isospin effects.

scholarly journals Poisson baseline of net-charge fluctuations in relativistic heavy ion collisions

2018 ◽  
Vol 42 (7) ◽  
pp. 074104 ◽  
Author(s):  
Xue Pan ◽  
Yu-Fu Lin ◽  
Li-Zhu Chen ◽  
Ming-Mei Xu ◽  
Yuan-Fang Wu
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Net Charge ◽  
Charge Fluctuations ◽  
Ion Collisions

scholarly journals Contributions of Jets in Net Charge Fluctuations from the Beam Energy Scan at RHIC and LHC

2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Bushra Ali ◽  
Shaista Khan ◽  
Shakeel Ahmad
Keyword(s):  
Beam Energy ◽  
Model Simulation ◽  
Monte Carlo Model ◽  
Heavy Ion ◽  
Nucleon Nucleon ◽  
Jet Quenching ◽  
Net Charge ◽  
Charge Fluctuations ◽  
Ion Collisions ◽  
Beam Energy Scan

Dynamical net charge fluctuations have been studied in ultrarelativistic heavy-ion collisions from the beam energy scan at RHIC and LHC energies by carrying out the hadronic model simulation. Monte Carlo model, HIJING, is used to generate events in two different modes, HIJING-default with jet quenching switched off and jet/minijet production switched off. A popular variable, ν[+-,dyn], is used to study the net charge fluctuations in different centrality bins and the findings are compared with the available experimental values reported earlier. Although the broad features of net charge fluctuations are reproduced by the HIJING, the model predicts the larger magnitude of fluctuations as compared to the one observed in experiments. The role of jets/minijets production in reducing the net charge fluctuations is, however, distinctly visible from the analysis of the two types of HIJING events. Furthermore, dNch/dη and 1/N scaling is partially exhibited, which is due to the fact that, in HIJING, nucleus-nucleus collisions are treated as multiple independent nucleon-nucleon collisions.

Feynman-diagram approach in heavy-ion interactions

1967 ◽  
Vol 52 (2) ◽  
pp. 570-573 ◽  
Author(s):  
L. Taffara ◽  
V. Vanzani
Keyword(s):  
Feynman Diagram ◽  
Heavy Ion ◽  
Ion Interactions ◽  
Diagram Approach

Evidence of non-thermal phase transition in ultrarelativistic heavy-ion interactions

1998 ◽  
Vol 41 (4) ◽  
pp. 371-376 ◽  
Author(s):  
D Ghosh ◽  
A. K Jafry ◽  
A Deb ◽  
S Sarkar ◽  
R Chattopadhyay ◽  
...  
Keyword(s):  
Phase Transition ◽  
Heavy Ion ◽  
Ion Interactions ◽  
Thermal Phase Transition ◽  
Thermal Phase
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