Energy loss of heavy-flavor quarks in color string medium

Abstract

The paper presents preliminary estimates of heavy-flavor (HF) quark energy loss during its propagation through the non-equilibrated medium formed in minimum bias proton-proton (p+p) collisions at LHC energies. The study is inspired by the ongoing hot debates on whether tiny droplets of Quark-Gluon Plasma can be created in collisions of small systems. In this work, we model a p+p event with a fluctuating number of color strings originated from multi-pomeron exchanges. Considered longitudinal oscillations of strings dynamically initialize medium at each time step. Their varying overlaps create fluctuations in the color field energy density that governs the elastic scattering rate of HF quarks with the gluons present within the string volume. We calculate the transverse momentum dependence of the momentum loss for charm (anti-)quarks that are produced in initial hard scatterings and traverse the described environment. The simulation is performed using a developed hybrid approach on an event-by-event basis. Our results show significantly lower HF quarks energy loss compared to that obtained in the expanding hydrodynamic scenario of the new EPOS4HQ model.

arXiv comment19 pages, 4 figures, submitted to International Journal of Modern Physics E

References in corpus (60)

• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• New parton distributions for collider physics
• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• The PHOBOS Perspective on Discoveries at RHIC
• Collective flow and viscosity in relativistic heavy-ion collisions
• The chiral and deconfinement aspects of the QCD transition
• Heavy Ion Collisions: The Big Picture, and the Big Questions
• Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at sqrt(S(NN))= 2.76 TeV with the ATLAS Detector at the LHC
• How Much do Heavy Quarks Thermalize in a Heavy Ion Collision?
• Observation and studies of jet quenching in PbPb collisions at nucleon-nucleon center-of-mass energy = 2.76 TeV
• Enhanced production of multi-strange hadrons in high-multiplicity proton-proton collisions
• The CT10 NNLO Global Analysis of QCD
• Some Features of the Glasma
• Collective Modes of an Anisotropic Quark-Gluon Plasma
• Charged-particle multiplicity density at mid-rapidity in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• New theories of relativistic hydrodynamics in the LHC era
• Observation of long-range elliptic anisotropies in $\sqrt{s}=$13 and 2.76 TeV $pp$ collisions with the ATLAS detector
• The Search for the Quark-Gluon Plasma
• Elliptical flow -- a signature for early pressure in ultrarelativistic nucleus-nucleus collisions
• A Multi-Phase Transport model for nuclear collisions at RHIC
• Casimir scaling of SU(3) static potentials
• Collective modes of an Anisotropic Quark-Gluon Plasma II
• Towards an understanding of the RHIC single electron data
• MARTINI: An event generator for relativistic heavy-ion collisions
• One fluid to rule them all: viscous hydrodynamic description of event-by-event central p+p, p+Pb and Pb+Pb collisions at $\sqrt{s}=5.02$ TeV
• Novel Collective Phenomena in High-Energy Proton-Proton and Proton-Nucleus Collisions
• Parton transport and hadronization from the dynamical quasiparticle point of view
• Hydrodynamic gradient expansion in gauge theory plasmas
• Third flow component as QGP signal
• Dynamical initial state model for relativistic heavy-ion collisions
• The ALICE experiment: a journey through QCD
• Towards the determination of heavy-quark transport coefficients in quark-gluon plasma
• Angular Correlations in Gluon Production at High Energy
• Collisional energy loss of a fast heavy quark in a quark-gluon plasma
• Measurements of long-range azimuthal anisotropies and associated Fourier coefficients for $pp$ collisions at $\sqrt{s}=5.02$ and $13$ TeV and $p$+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector
• Magnetic Component of Quark-Gluon Plasma is also a Liquid!
• Do nuclear collisions create a locally equilibrated quark-gluon plasma?
• Measurements of long-range near-side angular correlations in $\sqrt{s_{\text{NN}}}=5$TeV proton-lead collisions in the forward region
• The PYTHIA Event Generator: Past, Present and Future
• Consistency of Perfect Fluidity and Jet Quenching in semi-Quark-Gluon Monopole Plasmas
• ${\mathrm{\Lambda }}_{\mathrm{c}}^{+}$ production and baryon-to-meson ratios in pp and p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV at the LHC
• Azimuthal jet flavor tomography with CUJET2.0 of nuclear collisions at RHIC and LHC
• Towards the Little Bang Standard Model
• Global Constraints from RHIC and LHC on Transport Properties of QCD Fluids in CUJET/CIBJET Framework
• Flux tubes in the SU(3) vacuum: London penetration depth and coherence length
• Heavy Quarks Embedded in Glasma
• Observation of a multiplicity dependence in the $p_{\mathrm{T}}$-differential charm baryon-to-meson ratios in proton-proton collisions at $\sqrt{s}=13$ TeV
• Fusion of strings vs. percolation and the transition to the quark-gluon plasma
• Heavy Quarks in Turbulent QCD Plasmas
• Establishing the Range of Applicability of Hydrodynamics in High-Energy Collisions
• Overview of high-density QCD studies with the CMS experiment at the LHC
• Gluon radiation by heavy quarks at intermediate energies
• Probing the Color Structure of the Perfect QCD Fluids via Soft-Hard-Event-by-Event Azimuthal Correlations
• Tomography of the Quark Gluon Plasma by Heavy Quarks
• Energy Loss in Unstable Quark-Gluon Plasma
• Transverse momentum diffusion and jet energy loss in non-Abelian plasmas
• The strongly intensive observable in pp collisions at LHC energies in the string fusion model
• Type of dual superconductivity for the $SU(2)$ Yang--Mills theory
• One fluid might not rule them all