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Experimental data from the Relativistic Heavy Ion Collider (RHIC) suggests that the quark gluon plasma behaves almost like an ideal fluid. Due to its short lifetime, many QGP properties can only be inferred indirectly through a comparison…

Nuclear Theory · Physics 2015-06-03 Hannah Petersen , Rolando La Placa , Steffen A. Bass

The event-by-event analysis of high energy nuclear collisions aims at revealing the richness of the underlying event structures and provide unique measures of dynamical fluctuations associated with QGP phase transition. The major challenge…

Nuclear Experiment · Physics 2008-11-26 Tapan K. Nayak

We argue that statistical data analysis of two-particle longitudinal correlations in ultra-relativistic heavy-ion collisions may be efficiently carried out with the technique of partial covariance. In this method, the spurious…

Nuclear Theory · Physics 2018-10-04 Adam Olszewski , Wojciech Broniowski

We study the event-by-event fluctuations of the charged particles and compare the results of different Monte-Carlo Generators (MCG): VNIb, HIJING, HIJING/B${\bar B}$ and RQMD. We find that the $D$-measure can be used to distinguish between…

High Energy Physics - Phenomenology · Physics 2016-09-06 Q. H. Zhang , V. Topor Pop , S. Jeon , C. Gale

Recently the use of mobile technologies in Ecological Momentary Assessments (EMA) and Interventions (EMI) has made it easier to collect data suitable for intra-individual variability studies in the medical field. Nevertheless, especially…

Improved constraints on current model parameters in a heavy-ion collision model are established using the latest measurements from three distinct collision systems. Various observables are utilized from Au--Au collisions at…

High Energy Physics - Phenomenology · Physics 2024-11-05 Maxim Virta , Jasper Parkkila , Dong Jo Kim

The study of multiplicity distributions of identified particles in terms of their higher moments is at the focus of contemporary experimental and theoretical studies. In a thermalized system, combinations of these moments are directly…

Nuclear Theory · Physics 2019-02-20 Peter Braun-Munzinger , Anar Rustamov , Johanna Stachel

In relativistic heavy-ion collisions, the event-by-event mean transverse momentum fluctuations are sensitive to overlap area and energy density fluctuations in initial state. We present a framework to calculate $p_{\mathrm{T}}$ fluctuations…

Nuclear Theory · Physics 2022-09-01 Somadutta Bhatta , Chunjian Zhang , Jiangyong Jia

We study the dynamics of quantum fluctuations which take place at the earliest stage of high-energy processes and the conditions under which the data from e-p deep-inelastic scattering may serve as an input for computing the initial data…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Makhlin , E. Surdutovich

We revisit the D-measure of event-by-event net-electric charge fluctuations, an idea first introduced over 20 years ago as a potential signature for the presence of quark-gluon plasma (QGP) in heavy-ion collisions. We developed a…

Nuclear Theory · Physics 2025-09-22 Jonathan Parra , Roman Poberezhniuk , Volker Koch , Claudia Ratti , Volodymyr Vovchenko

The Phi-measure of event-by-event fluctuations in high-energy heavy-ion collisions corresponds to the second moment of the fluctuating quantity distribution of interest. It is shown that the measure based on the third moment preserves the…

Nuclear Theory · Physics 2009-10-31 Stanislaw Mrowczynski

Mix-cumulants of conserved charge distributions are sensitive observables for probing properties of the QCD medium and phase transition in heavy-ion collisions. To perform precise measurements, efficiency correction is one of the most…

Data Analysis, Statistics and Probability · Physics 2021-08-03 Arghya Chatterjee , Toshihiro Nonaka , ShinIchi Esumi , Xiaofeng Luo

Given the short lifetime and the reduced volume of the quark-gluon plasma (QGP) formed in high-energy heavy ion collisions, a possible critical endpoint (CEP) will be blurred in a region and the effects from criticality severely smoothened.…

High Energy Physics - Phenomenology · Physics 2011-08-11 Eduardo S. Fraga , Leticia F. Palhares , Paul Sorensen

Centrality determination remains one of the major sources of systematic uncertainty in intermediate-energy heavy-ion collision analyses, especially for probing the nuclear equation of state (EoS) at supra-saturation densities. To…

Nuclear Theory · Physics 2026-01-29 Xiaoqing Yue , Pengcheng Li , Yongjia Wang , Qingfeng Li , Fuhu Liu

It has been demonstrated that factorial moments analysis in dependence from the size of phase-space cells (when the latter is decreased but is still considerably large), exhibits sensitivity to particle bunching within a system situated in…

Nuclear Theory · Physics 2024-08-28 Valeria Zelina Reyna Ortiz , Maciej Rybczynski , Zbigniew Wlodarczyk

We study event-by-event dynamical fluctuations of various particle ratios at different energies. We assume that particle production in final state is due to chemical equilibrium processes. We compare results from resonance gas model with…

High Energy Physics - Phenomenology · Physics 2012-07-10 A. Tawfik

Recent measurements of charge-dependent azimuthal correlations in high-energy heavy-ion collisions have indicated charge-separation signals perpendicular to the reaction plane, and have been related to the chiral magnetic effect (CME).…

Nuclear Theory · Physics 2017-11-29 Fufang Wen , Jacob Bryon , Liwen Wen , Gang Wang

Subensemble Acceptance Method (SAM) [1,2] is an essential link between measured event-by-event fluctuations and their grand canonical theoretical predictions such as lattice QCD. The method allows quantifying the global conservation law…

High Energy Physics - Phenomenology · Physics 2024-01-01 Roman Poberezhnyuk , Oleh Savchuk , Volodymyr Vovchenko , Volodymyr Kuznietsov , Jan Steinheimer , Mark Gorenstein , Horst Stoecker

This study explores the Chiral Magnetic Effect (CME) in ultra-relativistic heavy-ion collisions. The CME, observed as back-to-back charge separation along the magnetic field axis, is investigated using the newly developed Sliding Dumbbell…

Nuclear Theory · Physics 2025-02-04 Madan M. Aggarwal , Anjali Attri , Sonia Parmar , Anjali Sharma , Jagbir Singh

A model-independent search for deviations from the Standard Model prediction has been performed in e+p and e-p collisions at HERA using H1 data. All experimentally measurable event topologies involving isolated electrons, photons, muons,…

High Energy Physics - Experiment · Physics 2011-09-13 Martin Wessels