Jets, Bulk Matter, and their Interaction in Heavy Ion Collisions at Several TeV

Abstract

We discuss a theoretical scheme that accounts for bulk matter, jets, and the interaction between the two. The aim is a complete description of particle production at all transverse momentum ($p_t$) scales. In this picture, the hard initial scatterings result in mainly longitudinal flux tubes, with transversely moving pieces carrying the $p_t$ of the partons from hard scatterings. These flux tubes constitute eventually both bulk matter (which thermalizes and flows) and jets. We introduce a criterion based on parton energy loss to decide whether a given string segment contributes to the bulk or leaves the matter to end up as a jet of hadrons. Essentially low $p_t$ segments from inside the volume will constitute the bulk, high $p_t$ segments (or segments very close to the surface) contribute to the jets. The latter ones appear after the usual flux tube breaking via q-qbar production (Schwinger mechanism). Interesting is the transition region: Intermediate $p_t$ segments produced inside the matter close to the surface but having enough energy to escape, are supposed to pick up q-qbar pairs from the thermal matter rather than creating them via the Schwinger mechanism. This represents a communication between jets and the flowing bulk matter (fluid-jet interaction). Also very important is the interaction between jet hadrons and the soft hadrons from the fluid freeze-out. We employ the new picture to investigate Pb-Pb collisions at 2.76 TeV. We discuss the centrality and $p_t$ dependence of particle production and long range dihadron correlations at small and large $p_t$.

References in corpus (8)

• The QCD equation of state with dynamical quarks
• Fully integrated transport approach to heavy ion reactions with an intermediate hydrodynamic stage
• Dihadron azimuthal correlations in Au+Au collisions at sqrt(s_NN)=200 GeV
• Measurement of the pseudorapidity and transverse momentum dependence of the elliptic flow of charged particles in lead-lead collisions at sqrt(s_NN) = 2.76 TeV with the ATLAS detector
• Harmonic decomposition of two-particle angular correlations in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead-lead collisions at sqrt(s_NN) = 2.76 TeV with the ATLAS detector
• Identified-particle production and spectra with the ALICE detector in pp and Pb-Pb collisions at the LHC
• Collisional Energy Loss of a Fast Parton in a QGP

Cited by in corpus (75)

• EPOS LHC : test of collective hadronization with LHC data
• Hydrodynamic Modeling of Heavy-Ion Collisions
• Centrality dependence of $\pi$, K, p production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Heavy-flavour and quarkonium production in the LHC era: from proton-proton to heavy-ion collisions
• QCD and strongly coupled gauge theories: challenges and perspectives
• Multiplicity Dependence of Pion, Kaon, Proton and Lambda Production in p-Pb Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Event-by-event fluctuations in perturbative QCD + saturation + hydro model: pinning down QCD matter shear viscosity in ultrarelativistic heavy-ion collisions
• Multi-strange baryon production at mid-rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Production of charged pions, kaons and protons at large transverse momenta in pp and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Production of charged pions, kaons and (anti-)protons in Pb-Pb and inelastic pp collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Novel Collective Phenomena in High-Energy Proton-Proton and Proton-Nucleus Collisions
• Collective dynamics of the high-energy proton-nucleus collisions
• Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Analysing radial flow features in p-Pb and p-p collisions at several TeV by studying identified particle production in EPOS3
• Initial State Fluctuations and Final State Correlations in Relativistic Heavy-Ion Collisions
• The ALICE experiment: a journey through QCD
• Heavy quarks and jets as probes of the QGP
• Azimuthal anisotropy of D meson production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Centrality dependence of the nuclear modification factor of charged pions, kaons, and protons in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Azimuthal correlations of heavy quarks in Pb+Pb collisions at LHC ($\sqrt{s}=2.76$ TeV)
• Integrated Dynamical Approach to Relativistic Heavy Ion Collisions
• Influence of hadronic bound states above $T_c$ on heavy-quark observables in Pb+Pb collisions at at the CERN Large Hadron Collider
• Elliptic and triangular flow of heavy flavor in heavy-ion collisions
• QGP formation time and direct photons from heavy ion collisions
• Neutral pion production at midrapidity in pp and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Anisotropic flow of identified particles in Pb-Pb collisions at $\sqrt{{\text{s}}_{\mathrm{NN}}}=5.02$ TeV
• From hydro to jet quenching, coalescence and hadron cascade: a coupled approach to solving the $R_{AA}\otimes v_2$ puzzle
• An overview of experimental results from ultra-relativistic heavy-ion collisions at the CERN LHC: bulk properties and dynamical evolution
• Charge conservation and the shape of the ridge of two-particle correlations in relativistic heavy-ion collisions
• Hadron spectra, flow and correlations in PbPb collisions at the LHC: interplay between soft and hard physics
• Transverse-momentum spectra of strange particles produced in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV in the chemical non-equilibrium model
• Anisotropic flow in transport+hydrodynamics hybrid approaches
• Elliptic flow of muons from heavy-flavour hadron decays at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Gluon radiation by heavy quarks at intermediate energies
• Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at $\sqrt{{\mathbf{s}}_{\mathrm{NN}}}$ = 2.76 TeV
• Toward a consistent evolution of the quark-gluon plasma and heavy quarks
• Measurement of electrons from beauty-hadron decays in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Lambda over Kaon Enhancement in Heavy Ion Collisions at Several TeV
• Λ polarization from thermalized jet energy
• Neutral pion and $\eta$ meson production at mid-rapidity in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV
• Measurement of strange baryon-antibaryon interactions with femtoscopic correlations
• Jet quenching in the hadron gas: an exploratory study
• Heavy-ion physics at the LHC: Review of Run I results
• Initial state fluctuations and final state correlations: Status and open questions
• Early evolution constrained by high-$p_T$ QGP tomography
• Anisotropic flow of identified hadrons in Xe-Xe collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.44TeV
• Forced canonical thermalization in a hadronic transport approach at high density
• Energy dependence of $\varphi$ meson production at forward rapidity in pp collisions at the LHC
• Relics of Minijets amid Anisotropic Flows in High-energy Heavy-ion Collisions
• Heavy-flavor observables at RHIC and LHC
• Production of $\pi$/K/p from intermediate to high $p_{\mathrm{T}}$ in pp, p-Pb and Pb-Pb collisions measured by ALICE
• Prompt and non-prompt J$/\psi$ production at midrapidity in Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Heavy-flavor azimuthal correlations of D mesons
• Production and ratio of $\pi$, K, p and $\Lambda$ in Pb + Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV
• Overview of ALICE results
• Multi-strange baryon production in Pb-Pb and pp collisions at $\sqrt{s_{NN}}$ = 2.76 TeV with the ALICE experiment at the LHC
• $\varphi$ meson production at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Meson and baryon femtoscopy in heavy-ion collisions at ALICE
• How much does the hadronic phase contribute to the observed anisotropic flow at the LHC?
• Dynamics of particle production in Pb--Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV using PYTHIA8 Angantyr model
• Identified charged hadron production in pp and Pb-Pb collisions with ALICE at the LHC
• D mesons in non-central heavy-ion collisions: fluctuating vs. averaged initial conditions
• Effect of color reconnection and rope formation on strange particle production in p+p collisions at $\sqrt{s}=13$ TeV
• Jet Quenching and Correlations
• Baryon femtoscopy in sqrt(sNN) = 2.76 TeV Pb-Pb collisions at ALICE
• Neutral meson production in pp and Pb-Pb collisions measured by ALICE at the LHC
• Charge balancing and the fall off of the ridge
• Hydrodynamic models of particle production
• Study of the neutral mesons in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV in the ALICE experiment at LHC
• Event-by-Event Observables and Fluctuations
• Medium modification of jet shape observables in Pb-Pb collisions at $\sqrt{s_{NN}}$= 2.76 TeV using EPOS and JEWEL event generators
• Nature of particles azimuthal anisotropy at low and high transverse momenta in ultrarelativistic A+A collisions
• The quest for the quark-gluon plasma from the perspective of dynamical models of relativistic heavy-ion collisions
• Results on identified particle production in pp, p-Pb and Pb-Pb collisions measured with ALICE at the LHC
• Study of medium modified jet shape observables in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV using EPOS and JEWEL event generators