Multiplicity and Pseudorapidity distributions of charged particles in asymmetric and deformed nuclear collisions in a Wounded Quark Model

Abstract

The charged particle multiplicity ($n_{ch}$) and pseudorapidity density $(d{n}_{ch}/d\eta )$ are key observables to characterize the properties of matter created in heavy ion collisions. The dependence of these observables on collision energy and the collision geometry are a key tool to understand the underlying particle production mechanism. Recently a lot of focus has been made on asymmetric and deformed nuclei collisions since these collisions can provide a deeper understanding about the nature of quantum chromodynamics (QCD). On phenomenological perspective a unified model which describes the experimental data coming from various kind of collision experiments, is much needed to provide the physical insights about the production mechanism. In this paper, we have calculated the charged hadron multiplicities for nucleon-nucleus (such as proton-lead $(p-Pb)$ and asymmetric nuclei collisions like deutron-gold $(d-Au)$, and copper-gold $(Cu-Au)$ within a new version of wounded quark model (WQM) and shown their variation with respect to centrality. Further we have used a suitable density function within our WQM to calculate pseudorapidity density of charged hadrons at mid-rapidity in the collisions of deformed uranium nuclei. We found that our model with suitable density functions describes the experimental data for symmetric, asymmetric and deformed nuclei collisions simultaneously over a wide range of collision energy.

25 pages, 15 figures, 3 tables

References in corpus (12)

• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Multiplicity scaling in ideal and viscous hydrodynamics
• CGC predictions for p+Pb collisions at the LHC
• Glauber modeling of high-energy nuclear collisions at sub-nucleon level
• Wounded quarks and diquarks in high energy collisions
• Wounded quarks in A+A, p+A, and p+p collisions
• Predictions of elliptic flow and nuclear modification factor from 200 GeV U + U collisions at RHIC
• Charged particle (pseudo-)rapidity distributions in proton+anti-proton/proton+proton and Pb+Pb/Au+Au collisions from SPS to LHC energies from UrQMD
• Tests of constituent-quark generation methods which maintain both the nucleon center of mass and the desired radial distribution in Monte Carlo Glauber models
• A systematic study of the initial state in heavy ion collisions based on the quark participant assumption
• A Hybrid Model for QCD Deconfining Phase Boundary
• Wounded Quarks and Multiplicity at Relativistic Ion Colliders

Cited by in corpus (9)

• Wounded quark emission function at the top RHIC energy
• Transverse Momentum Distribution and Elliptic Flow of Charged Hadrons in $U$+$U$ collisions at $\sqrt{s_{NN}}=193$ GeV using HYDJET++
• Forward-backward multiplicity fluctuations in ultra-relativistic nuclear collisions with wounded quarks and fluctuating strings
• Longitudinal correlations from fluctuating strings in Pb-Pb, p-Pb, and p-p collisions
• Study of charged particle production in $U$-$U$ collisions in a Wounded Quark Model
• Pseudorapidity density, transverse momentum spectra, and elliptic flow studies in Xe-Xe collision systems at $\sqrt{{\mathrm{s}}_{\mathrm{NN}}}=5.44TeV$ using the HYDJET++ model
• Wounded nucleon, quark and quark-diquark emission functions versus experimental results from RHIC
• Transverse momentum spectra and suppression of charged hadrons in deformed Xe-Xe collisions at $\sqrt{s_{NN}}$ = 5.44 TeV using HYDJET++ model
• Universal Freezeout Condition for Charged Hadrons in a Hybrid Approach