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A Monte Carlo study of identified particle ratio fluctuations at LHC energies is carried out in the frame work of \hij model using the fluctuation variable $\nu_{dyn}$. The simulated events for Pb-Pb collisions at $\sqrt{s}_{NN}$ = 2.76 and…

高能物理 - 唯象学 · 物理学 2021-08-19 Shaista Khan , Bushra Ali , Anuj Chandra , Shakeel Ahmad

Event-by-event fluctuations of the average transverse momentum of produced particles near mid-rapidity have been measured by the PHENIX Collaboration in sqrt(s_NN)=200 GeV Au+Au and p+p collisions at the Relativistic Heavy Ion Collider. The…

核实验 · 物理学 2008-11-26 the PHENIX Collaboration , S. S. Adler

Multiplicity fluctuation of the target evaporated fragments emitted in 290 A MeV 12C-AgBr, 400 A MeV 12C-AgBr, 400 A MeV 20Ne-AgBr and 500 A MeV 56Fe-AgBr interactions is investigated using scaled factorial moment method in two-dimensional…

Measurements of (anti)deuteron and (anti)$^3$He production in the rapidity range $ |y| < $ 0.5 as a function of the transverse momentum and event multiplicity in Xe$-$Xe collisions at a center-of-mass energy per nucleon$-$nucleon pair of…

核实验 · 物理学 2024-12-05 ALICE Collaboration

We study the production of pions, kaons, and (anti)protons in A Multi Phase Transport (AMPT) Model in Au+Au collisions at $\sqrt{s_{NN}}=$ 7.7, 27, and 200 GeV. We present the centrality and energy dependence of various bulk observables…

高能物理 - 唯象学 · 物理学 2020-08-24 Abhirikshma Nandi , Lokesh Kumar , Natasha Sharma

Strong modification of event-by-event fluctuations in global observables was proposed by several authors as an indicator of the phase transition in system evolution. We report the results of the analysis of STAR TPC data on the charged…

核实验 · 物理学 2019-08-14 Sergei A. Voloshin

The multiplicity and elliptic flow of charged particles produced in Pb-Pb collisions at center of mass energy $\sqrt{s_{NN}}=2.76$ TeV from the Large Hadron Collider are studied in a multiphase transport (AMPT) model. With the standard…

核理论 · 物理学 2015-03-17 Jun Xu , Che Ming Ko

The distribution characteristic of final-state particles is one of significant parts in high energy nuclear collisions. The transverse momentum distribution of charged particles carries essential evolution information about the collision…

高能物理 - 唯象学 · 物理学 2019-12-04 Hai-Fu Zhao , Bao-Chun Li , Hong-Wei Dong

We discuss various measures of net charge (conserved quantities) fluctuations proposed for the identification of critical phenomena in heavy ion collisions. We show the dynamical component of fluctuations of the net charge can be expressed…

核实验 · 物理学 2009-11-07 C. Pruneau , S. Gavin , S. Voloshin

Heavy-ion collisions at ultra-relativistic energies provide extreme conditions of energy density and temperature to produce a deconfined state of quarks and gluons. Xenon (Xe) being a deformed nucleus further gives access to the effect of…

高能物理 - 唯象学 · 物理学 2022-05-19 Girija Sankar Pradhan , Rutuparna Rath , Ronald Scaria , Raghunath Sahoo

The first measurement of the production of pions, kaons, (anti-)protons and $\phi$ mesons at midrapidity in Xe-Xe collisions at $\sqrt{s_{\rm NN}} = 5.44$ TeV is presented. Transverse momentum ($p_{\rm T}$) spectra and $p_{\rm…

核实验 · 物理学 2021-08-26 ALICE Collaboration

Event-by-event fluctuations of the mean transverse momentum ($p_{\rm T}$) of relativistic charged particles are analyzed using the two-particle correlator $\sqrt{C_m}/M(p_{\rm T})_m$, which quantifies the correlations strength in units of…

高能物理 - 实验 · 物理学 2025-05-22 Bushra Ali

The strangeness production is an important observable to study the QCD phase diagram. The yield ratios of strange quark can be helpful to search for the QCD critical end point (CEP) and/or first-order phase transition. In this work, we…

高能物理 - 唯象学 · 物理学 2023-04-17 Junaid Tariq , Sumaira Ikram , M. U. Ashraf

We propose to characterize heavy-ion collisions at ultra-relativistic energies by using fluctuations of energy density and temperature. Temperature fluctuations on an event-by-event basis have been studied both in terms of global…

核实验 · 物理学 2020-09-08 Sumit Basu , Rupa Chatterjee , Bastanta K. Nandi , Tapan K. Nayak

Multiplicity fluctuations in the forward hemisphere were studied for positively, negatively and all charged hadrons produced in central Pb+Pb collisions at 20A, 30A, 40A, 80A and 158A GeV. The multiplicity distributions and their scaled…

核实验 · 物理学 2008-11-26 Benjamin Lungwitz

Results on dynamical fluctuations of charged particles in the pseudorapidity space of central C--Cu interactions at 4.5 $A$ GeV/$c$ are performed in the transformed variables and using higher order scaled factorial moments modifyied to…

高能物理 - 唯象学 · 物理学 2009-10-28 E. K. Sarkisyan , L. K. Gelovani , G. L. Gogiberidze , G. G. Taran

Event-by-event (ebe) fluctuations in mean pseudorapidity values of relativistic charged particles in full phase space is studied by analysing experimental data on $^{16}O-AgBr$ collisions at 14.5A, 60A, and 200A GeV/c and $^{32}S-AgBr$…

高能物理 - 唯象学 · 物理学 2022-05-31 Bushra Ali , Shaista Khan , Anuj Chandra , Shakeel Ahmad

In this paper, we study and predict the charged-particle pseudorapidity multiplicity density ($\frac{dN_{ch}}{d\eta}$), transverse momentum spectra of identified particles and their ratios in relativistic heavy ion collisions at the Large…

高能物理 - 唯象学 · 物理学 2019-11-14 Lilin Zhu , Hua Zheng , Ruimin Kong

Starting from the recognition that hadrons are not produced smoothly at phase transition, the fluctuation of spatial patterns is investigated by finding a measure of the voids that exhibits scaling behavior. The Ising model is used to…

核理论 · 物理学 2009-11-06 Rudolph C. Hwa , Qing-hui Zhang

In this study, we systematically investigate deformed Xe-Xe collisions at 5.44 TeV center of mass energy. We exploit the Monte Carlo HYDJET++ model to compute transverse momentum ($p_{T}$) distribution, nuclear modification factor $R_{AA}$…

高能物理 - 唯象学 · 物理学 2023-02-08 Saraswati Pandey , B. K. Singh