A charge-sensitive in-event correlator is proposed and tested for its efficacy to detect characterize charge separation associated with the Chiral Magnetic Effect (CME) in heavy ion collisions. Tests, performed aid of two reaction models, indicate discernible responses background- CME-driven separation, relative second- ($\Psi_{2}$) third-order ($\Psi_{3}$) event planes, which could serve identify CME. The tests also a degree sensitivity would enable robust characterization CME via Anomalous...

In the present work, we analyze effects of an external magnetic field on chiral critical temperature ${T}_{c}$ strongly interacting matter. doing this, can characterize properties quantum chromodynamics (QCD) matter, quark-gluon plasma (QGP). We investigate this in framework SU(3) Polyakov linear sigma model (PLSM). To end, implement two approaches representing systems, which Polyakov-loop potential added to PLSM is either renormalized or non-normalized. The Landau quantization matter are...

In order to characterize the higher moments of particle multiplicity, we implement linear-sigma model with Polyakov-loop correction. We first studied critical phenomena and estimated some thermodynamic quantities. Then, compared all these results first--principle lattice QCD calculations. extensive study non-normalized four is followed by investigating their thermal density dependence. repeat this for normalized temperature chemical potential. The fluctuations second moment used estimate...

The 2 + 1 SU(3) Polyakov linear sigma model is used to investigate the respective influence of a finite volume and magnetic field on quark-hadron phase boundary in plane baryon chemical potential () versus temperature (T) quantum chromodynamics (QCD) diagram. calculated results indicate sizable shifts lower values for increasing strength, an opposite shift higher decreasing system volume. Such could have important implications extraction thermodynamic properties QCD diagram from heavy ion data.

A Multi-Phase Transport (AMPT) model is used to study the efficacy of shape-engineered events delineate degree coupling between linear and nonlinear contributions higher-order flow harmonics $v_{4}$ $v_{5}$. The shows that are strongly shape-dependent while shape-independent, indicating little if any, coefficients. experimental verification such patterns could be an invaluable tool for robust extraction mode-coupled coefficients, especially beam energies where charged particle multiplicity...

Effects of an external magnetic field on various properties quantum chromodynamics (QCD) matter under extreme conditions temperature and density (chemical potential) have been analyzed. To this end, we use SU(3) Polyakov $\text{linear}\ensuremath{-}\ensuremath{\sigma}$ model assume that the $(eB)$ adds some restrictions to quarks' energy due existence free charges in plasma phase. In doing this, apply Landau theory quantization, which assumes cyclotron orbits charged particles a should be...

Anomalous viscous fluid dynamics model calculations for $_{44}^{96}\mathrm{Ru}+_{44}^{96}\mathrm{Ru}$ and $_{40}^{96}\mathrm{Zr}+_{40}^{96}\mathrm{Zr}$ collisions ($\sqrt{{s}_{NN}}=200$ GeV) are used in concert with a charge-sensitive correlator to test its ability detect characterize the charge separation difference expected from chiral magnetic effect (CME) these isobaric collisions. The tests indicate larger than discernible CME-driven of $\ensuremath{\sim}10%$ presence realistic non-CME...

Recent STAR measurements of the anisotropic flow coefficients vn (2 ≤ n 5) in Au+Au collisions at RHIC, are presented for full span energies (7.7 − 200 GeV) employed beam energy scan I (BES-I). The which can provide strong constraints baryon chemical potential (µB) and temperature (T ) dependence specific shear viscosity η/s, indicate sizable dependencies on harmonic number n, pT centrality, with similar patterns [but different magnitudes] across studied. An excitation function viscous...

Recently studies of the differential nature flow angle fluctuations, known as event plane angular decorrelation, indicated that measurements assume a common symmetry may need to consider fluctuations effect. Using HIJING and AMPT models, it is shown measurements, obtained with two- three-subevents correlation method, could have significant non-flow effects associated long- short-range correlations. The current study demonstrates four-subevents cumulant methods' ability reduce effects. It...

The multiphase transport model (AMPT) is used to study the final-state effects on symmetric correlations (SC), asymmetric (ASC), normalized (NSC), and (NASC) in $\mathrm{Au}+\mathrm{Au}$ collisions at 200 GeV. correlators' sensitivity nonflow associated with long- short-range are also discussed using HIJING model. results indicate that SC, ASC, NSC, NASC can give accompanying constraints for initial- effects. In addition, conducting further detailed experimental measurements spanning a broad...

The charged-particle pseudorapidity density ( d N ch / η ) for p( p ¯ )+p, p+A and A+A(B) collisions the mean multiplicity 〈 〉 e − +e + , ± )+p are studied a wide range of beam energies s ). Characteristic scaling patterns observed both consistent with thermal particle production mechanism bulk soft particles created in all these systems. found also validate an essential role quark participants collisions. measured values to factorize into contributions that depend on log number nucleon or...

A Multi-Phase Transport (AMPT) model is used to study the elliptic flow fluctuations of identified particles using participant and spectator event planes. The measured first order plane expected give relative true reaction which suppresses fluctuations. However, second-order capture Our shows that could be in AMPT model. magnitude weak particle species dependence transverse momentum dependence. Such observation will have important implications for understanding source

The pseudorapidity density (dN/deta) for p+p, p+A and A+A(B) collisions, the mean multiplicity ee, ep, p+p are studied an inclusive range of beam energies (Root_s). Characteristic scaling patterns observed both dN/deta , consistent with a thermal particle production mechanism bulk soft particles produced in all these systems. They also validate essential role quark participants collisions. scaled values to factorize into contributions which depend on log(Root_s) number nucleon or participant...

The correlation between the event mean-transverse momentum [pT], and anisotropic flow magnitude vn, ρ(vn2,[pT]), has been argued to be sensitive initial conditions in heavy-ion collisions. We use simulated events generated with AMPT EPOS models for Au+Au at sNN = 200 GeV, investigate model dependence response sensitivity of ρ(v22,[pT]) correlator collision-system size shape, viscosity matter produced find good qualitative agreement correlators string melting version model. investigations...

In the framework of linear σ-model (LSM) with three quark flavors, chiral phase diagram at finite temperature and density is investigated. For temperatures higher than critical (), we added to LSM gluonic sector from quasi-particle model (QPM), which assumes that interacting gluons in strongly matter, quark–gluon plasma (QGP), are phenomenologically same as non-interacting massive quasi-particles. The dependence condensates strange non-strange quarks on chemical potential analyzed. Then,...

The Multi-Phase Transport model (AMPT) is used to study the effects of parton-scattering cross-sections ($\sigma_{pp}$) and hadronic re-scattering on linear contributions flow harmonic $\textit{v}_{4}$, non-linear response coefficients, correlations between different order symmetry planes in Au+Au collisions at 200~GeV. results, which agree with current experimental measurements, indicate that higher-order harmonics are sensitive $\sigma_{pp}$ variations. However, coefficients independent....

A multiphase transport model (AMPT) is employed to predict symmetric correlations (SC), asymmetric (ASC), normalized (NSC), and (NASC) in $^{96}\mathrm{Ru}+^{96}\mathrm{Ru}$ $^{96}\mathrm{Zr}+^{96}\mathrm{Zr}$ collisions at 200 GeV. This study offers insights into the behavior of SC, ASC, NSC, NASC, considering various nuclear structure scenarios account for differences between two isobars. Additionally, I emphasize importance detailed experimental measurements as they will serve a critical...

Abstract Constituent quarks in a nucleon are the essential elements standard “quark model” associated with electric charge, spin, mass, and baryon number of nucleon. Quantum chromodynamics (QCD) describes as composite object containing current (valence sea (anti-)quarks) gluons. These subatomic their interactions known to contribute complex ways overall spin mass. In early development QCD theory 1970s, an alternative hypothesis postulated that might manifest itself through non-perturbative...

Recent STAR measurements of the anisotropic flow coefficients, v$_{n}$, are presented for Au+Au collisions spanning beam energy range $\sqrt{s_{NN}} = 7.7 - 200$~GeV. The indicate dependences on harmonic number, $n$, transverse momentum ($p_T$), pseudorapidity ($\eta$), collision centrality ($\mathrm{cent}$) and ($\sqrt{s_{NN}}$) which could serve as important constraints to test different initial-state models aid precision extraction temperature dependence specific shear viscosity.

Sensitivity of Polyakov Nambu-Jona-Lasinio (PNJL) model and linear sigma-model (PLSM) has been utilized in studying QCD phase-diagram. From quasi-particle (QPM) a gluonic sector is integrated into LSM. The hadron resonance gas (HRG) used calculating the thermal dense dependence quark-antiquark condensate. We review these four models with respect to their descriptions for chiral phase transition. analyze order parameter, normalized net-strange condensate, phase-diagram compare results recent...

The Multi-Phase Transport model (AMPT) is used to investigate the longitudinal broadening of transverse momentum two-particle correlator $C_{2}\left(\Delta\eta,\Delta\varphi\right)$, and its utility extract specific shear viscosity, $\eta/s$, quark-gluon plasma formed in ultra-relativistic heavy ion collisions. results from these studies indicate that $C_{2}\left(\Delta\eta,\Delta\varphi\right)$ sensitive magnitude $\eta/s$. However, reliable extraction requires suppression possible...

An effective Finite-Size Scaling (FSS) of moment products from recent STAR measurements the variance $σ$, skewness $S$ and kurtosis $κ$ net-proton multiplicity distributions, are reported for a broad range collision centralities in Au+Au ($\sqrt{s_{NN}}= 7.7 - 200$ GeV) collisions. The $Sσ$ $κσ^2 $, which directly related to hgher-order baryon number susceptibility ratios $χ^{(3)}_B/χ^{(2)}_B$ $χ^{(4)}_B/χ^{(2)}_B$, show scaling patterns consistent with earlier indications second order phase...