RHIC-tested predictions for low-$p_T$ and high-$p_T$ hadron spectra in nearly central Pb+Pb collisions at the LHC

Abstract

We study the hadron spectra in nearly central $A$+$A$ collisions at RHIC and LHC in a broad transverse momentum range. We cover the low-$p_T$ spectra using longitudinally boost-invariant hydrodynamics with initial energy and net-baryon number densities from the perturbative QCD (pQCD)+saturation model. Build-up of the transverse flow and sensitivity of the spectra to a single decoupling temperature $\Tdec$ are studied. Comparison with RHIC data at $\ssNN=130$ and 200 GeV suggests a rather high value $\Tdec=150$ MeV. The high-$p_T$ spectra are computed using factorized pQCD cross sections, nuclear parton distributions, fragmentation functions, and describing partonic energy loss in the quark-gluon plasma by quenching weights. Overall normalization is fixed on the basis of p+$\bar{\mathrm{p}}$(p) data and the strength of energy loss is determined from RHIC Au+Au data. Uncertainties are discussed. With constraints from RHIC data, we predict the $p_T$ spectra of hadrons in 5 % most central Pb+Pb collisions at the LHC energy $\ssNN=5500$ GeV. Due to the closed framework for primary production, we can also predict the net-baryon number at midrapidity, as well as the strength of partonic energy losses at the LHC. Both at the LHC and RHIC, we recognize a rather narrow crossover region in the $p_T$ spectra, where the hydrodynamic and pQCD fragmentation components become of equal size. We argue that in this crossover region the two contributions are to a good approximation mutually independent. In particular, our results suggest a wider $p_T$-region of applicability for hydrodynamical models at the LHC than at RHIC.

45 pages, 16 eps-figures

References in corpus (83)

• Suppression of Hadrons with Large Transverse Momentum in Central Au+Au Collisions at $sqrt {s sub {sub {NN}}}_ = 130 GeV
• Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Transverse momentum and collision energy dependence of high $p_T$ hadron suppression in Au+Au collisions at ultrarelativistic energies
• Disappearance of back-to-back high $p_T$ hadron correlations in central Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Elliptic Flow of Identified Hadrons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Evidence from d+Au measurements for final-state suppression of high $p_T$ hadrons in Au+Au collisions at RHIC
• Azimuthal anisotropy in Au+Au collisions at sqrtsNN = 200 GeV
• Centrality dependence of high pT hadron suppression in Au+Au collisions at sqrt(sNN)=130 GeV
• Collective flow and two-pion correlations from a relativistic hydrodynamic model with early chemical freeze out
• Suppressed pi^0 Production at Large Transverse Momentum in Central Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Absence of Suppression in Particle Production at Large Transverse Momentum in sqrt(s_NN) = 200 GeV d+Au Collisions
• Calculating Quenching Weights
• Identified particle distributions in pp and Au+Au collisions at sqrt{s_NN}=200 GeV
• Manifestations of high density QCD in the first RHIC data
• Transverse Momentum Spectra in Au+Au and d+Au Collisions at $\sqrt{s_{NN}}$=200 GeV and the Pseudorapidity Dependence of High p${}_T$ Suppression
• Early thermalization at RHIC
• Nuclear parton distributions at next to leading order
• Centrality dependence of multiplicity, transverse energy, and elliptic flow from hydrodynamics
• Production of gluons in the classical field model for heavy ion collisions
• High-p_T Charged Hadron Suppression in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Centrality dependence of pi^[+/-], K^[+/-], p and p-bar production from sqrt(s_NN)=130 GeV Au + Au collisions at RHIC
• QCD Plasma Instabilities and Bottom-Up Thermalization
• Systematic Studies of the Centrality and sqrt(s_NN) Dependence of dE_T/deta and dN_ch/deta in Heavy Ion Collisions at Mid-rapidity
• Coherent gluon production in very high energy heavy ion collisions
• Transverse flow and hadro-chemistry in Au+Au collisions at \sqrt{s_{NN}}=200 GeV
• Pseudorapidity distributions of charged particles from Au+Au collisions at the maximum RHIC energy, Sqrt(s_NN) = 200 GeV
• The Fragility of High-pT Hadron Spectra as a Hard Probe
• Nuclear Stopping in Au+Au Collisions at sqrt(sNN) = 200 GeV
• Color Glass Condensate at the LHC: hadron multiplicities in $pp$, $pA$ and $AA$ collisions
• Charged Meson Rapidity Distributions in central Au+Au Collisions at sqrt(s_nn) = 200 GeV
• Apparent Thermalization due to Plasma Instabilities in Quark-Gluon Plasma
• Hard-Loop Dynamics of Non-Abelian Plasma Instabilities
• Is early thermalization achieved only near midrapidity at RHIC ?
• Centrality and pseudorapidity dependence of elliptic flow for charged hadrons in Au+Au collisions at sqrt(sNN) = 200 GeV
• Description of the RHIC p_T-spectra in a thermal model with expansion
• Relating high-energy lepton-hadron, proton-nucleus and nucleus-nucleus collisions through geometric scaling
• Jet Tomography of Au+Au Reactions Including Multi-gluon Fluctuations
• A Dynamical Scaling Law for Jet Tomography
• The onset of classical QCD dynamics in relativistic heavy ion collisions
• Jet Quenching
• Mid-rapidity $\Lambda$ and $\bar{\Lambda }$ Production in Au+Au Collisions at $\sqrt{s_{{}_{NN}}}=130$ GeV
• Charged hadron transverse momentum distributions in Au+Au collisions at sqrt(s_NN) = 200 GeV
• Medium Modification of Jet Shapes and Jet Multiplicities
• Hydrodynamic afterburner for the Color Glass Condensate and the parton energy loss
• Measurement of the lambda and lambda^bar particles in Au+Au Collisions at sqrt(s_NN)=130 GeV
• High-p_T pion and kaon production in relativistic nuclear collisions
• A simple model for nuclear structure functions at small $x$ in the dipole picture
• Initial State Parton Broadening and Energy Loss Probed in d+Au at RHIC
• On the Quasiparticle Description of Lattice QCD Thermodynamics
• Anisotropy of flow and the order of phase transition in relativistic heavy ion collisions
• Interplay between soft and hard hadronic components for identified hadrons in relativistic heavy ion collisions
• Measurements of transverse energy distributions in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Hydrodynamic description of ultrarelativistic heavy-ion collisions
• Nonlinear corrections to the DGLAP equations in view of the HERA data
• Photon emission in heavy ion collisions at the CERN SPS
• Jet tomography
• Multiplicities and Transverse Energies in Central AA Collisions at RHIC and LHC from pQCD, Saturation and Hydrodynamics
• A perturbative QCD analysis of charged-particle distributions in hadronic and nuclear collisions
• Back-to-back correlations of high p_T hadrons in relativistic heavy ion collisions
• Energy loss in high energy heavy ion collisions from the Hydro+Jet model
• Comparison of space-time evolutions of hot/dense matter in $\sqrt{s_{NN}}$=17 and 130 GeV relativistic heavy ion collisions based on a hydrodynamical model
• Hydro+Cascade, Flow, the Equation of State, Predictions and Data
• Geometric scaling in inclusive e A reactions and nonlinear perturbative QCD
• On predictions of the first results from RHIC
• Thermodynamic Properties of Strongly Interacting Matter at Non-zero Baryon Number Density
• Pseudorapidity dependence of parton energy loss in relativistic heavy ion collisions
• Shadowing Effects on the Nuclear Suppression Factor, R_dAu, in d+Au Interactions
• Particle Production at Very Low Transverse Momenta in Au+Au Collisions at s(NN)**1/2 = 200 GeV
• Searching Evidence for the Color Glass Condensate at RHIC
• Dependence of hadron spectra on decoupling temperature and resonance contributions
• The Color Glass Condensate at RHIC
• Results of the Hydrodynamics Approach to Heavy Ion Collisions
• Rapidity dependence of particle production in ultrarelativistic nuclear collisions
• Heavy ion collision multiplicities and gluon distribution functions
• Theoretical Overview on (Hidden) Charm in High-Energy Heavy-Ion Collisions
• Transverse spectra of hadrons at RHIC
• On Hydrodynamical Description of Thermal Photons
• Jets as a Probe of Dense Matter at RHIC
• Leading order pQCD hadron production and nuclear modification factors at RHIC and the LHC
• Initial state of the QGP from perturbative QCD + saturation
• Nonlinear corrections to the DGLAP equations; looking for the saturation limits
• HBT: A (mostly) experimental overview
• From quark-gluon plasma to hadron spectra

Cited by in corpus (78)

• 3+1D hydrodynamic simulation of relativistic heavy-ion collisions
• Event-by-event fluctuations in perturbative QCD + saturation + hydro model: pinning down QCD matter shear viscosity in ultrarelativistic heavy-ion collisions
• Heavy-Quark Kinetics in the QGP at LHC
• Thermal Dileptons at LHC
• Heavy Ion Collisions at the LHC - Last Call for Predictions
• Hydrodynamic Models for Heavy Ion Collisions
• Space-time evolution of bulk QCD matter
• MARTINI: An event generator for relativistic heavy-ion collisions
• Influence of the shear viscosity of the quark-gluon plasma on elliptic flow in ultrarelativistic heavy-ion collisions
• Relativistic hydrodynamics for heavy-ion collisions
• Event-by-event hydrodynamics and elliptic flow from fluctuating initial state
• THERMINATOR 2: THERMal heavy IoN generATOR 2
• Influence of a temperature-dependent shear viscosity on the azimuthal asymmetries of transverse momentum spectra in ultrarelativistic heavy-ion collisions
• Instabilities of an anisotropically expanding non-Abelian plasma: 1D+3V discretized hard-loop simulations
• Jet energy loss, photon production, and photon-hadron correlations at RHIC
• Plasma Instabilities in an Anisotropically Expanding Geometry
• Geometric scaling violations in the central rapidity region of d+Au collisions at RHIC
• Prospects of medium tomography using back-to-back hadron correlations
• Predictions for 5.023 TeV Pb+Pb collisions at the LHC
• Statistical Model Predictions for Particle Ratios at sqrt(s_NN) = 5.5 TeV
• Free-streaming approximation in early dynamics of relativistic heavy-ion collisions
• Jet hadrochemistry as a characteristics of jet quenching
• Early collective expansion: Relativistic hydrodynamics and the transport properties of QCD matter
• Towards jet tomography: gamma-hadron correlations
• Jet-quenching in a 3D hydrodynamic medium
• Chemical freeze-out temperature in hydrodynamical description of Au+Au collisions at sqrt(s_NN) = 200 GeV
• Systematics of the charged-hadron P_T spectrum and the nuclear suppression factor in heavy-ion collisions from sqrt{s}=200 GeV to sqrt{s} =2.76 TeV
• On the sensitivity of the dijet asymmetry to the physics of jet quenching
• Constraining the Physics of Jet Quenching
• Fluid dynamics with saturated minijet initial conditions in ultrarelativistic heavy-ion collisions
• Enhancement of thermal photon production in event-by-event hydrodynamics
• Degrees of freedom and the phase transitions of two flavor QCD
• Hydrodynamic radial and elliptic flow in heavy-ion collisions from AGS to LHC energies
• Multiplicities and $p_T$ spectra in ultrarelativistic heavy ion collisions from a next-to-leading order improved perturbative QCD + saturation + hydrodynamics model
• A Monte-Carlo model for elastic energy loss in a hydrodynamical background
• Soft heavy-ion physics from hydrodynamics with statistical hadronization - predictions for the Large Hadron Collider
• Dissipative Hydrodynamic Effects on Baryon Stopping
• Collision centrality and ${\tau }_0$ dependence of the emission of thermal photons from fluctuating initial state in ideal hydrodynamic calculation
• Through the blackness -- high p_T hadrons probing the central region of 200 AGeV Au-Au collisions
• The Phenomenology of Elastic Energy Loss
• Elliptic flow of thermal photons in heavy-ion collisions at Relativistic Heavy Ion Collider and Large Hadron Collider
• Elliptic flow in nuclear collisions at the Large Hadron Collider
• Radiative jet energy loss in a three-dimensional hydrodynamical medium and high $p_T$ azimuthal asymmetry of ${\pi }_0$ suppression at mid and forward rapidity at RHIC
• Angular variation of hard back-to-back hadron suppression in heavy-ion collisions
• Biased Showers - a common conceptual Framework for the Interpretation of High P_T Observables in Heavy-Ion Collisions
• Medium-modified Jet Shapes and other Jet Observables from in-medium Parton Shower Evolution
• Predictions for the LHC heavy ion programme
• Dynamical freeze-out condition in ultrarelativistic heavy ion collisions
• A Theoretical Assessment of Jet-Hadron Correlations
• Anisotropic flow in Pb+Pb collisions at LHC from the quark gluon string model with parton rearrangement
• Single-freeze-out model for ultra relativistic heavy-ion collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV and the LHC proton puzzle
• The space-time structure of the energy deposition into the bulk medium due to jet quenching
• Counting valence quarks at RHIC and LHC
• Energy deposition in hard dihadron triggered events in heavy-ion collisions
• Photon production from Pb+Pb collisions at {$\sqrt{s_{\mathrm{NN}}}$} = 5.02 TeV at LHC and at {$\sqrt{s_{\mathrm{NN}}}$} = 39 TeV at FCC
• Suppression of away-side jet fragments with respect to the reaction plane in Au+Au collisions at sqrt(s_NN) = 200 GeV
• Hard dihadron correlations in heavy-ion collisions at RHIC and LHC
• Hydrodynamic Description of Heavy Ion Collisions
• Evaluating Results from the Relativistic Heavy Ion Collider with Perturbative QCD and Hydrodynamics
• Charm hadron production in relativistic heavy ion collisions within a quark combination model
• Correlations of Heavy Quarks Produced at Large Hadron Collider
• Expectations for dihadron correlation measurements at the LHC
• Radial flow afterburner for event generators and the baryon puzzle
• Proton and anti-proton production in the forward region of d+Au collisions at RHIC from the color glass condensate
• Transverse Spectra of Hadrons in Central $AA$ Collisions at RHIC and LHC from pQCD+Saturation+Hydrodynamics and from pQCD+Energy Losses
• The Nuclear Suppression Factor for P_T increasing towards the Kinematic Limit
• Jet-dilepton conversion in expanding quark-gluon plasma
• Angular hadron correlations probing the early medium evolution
• Systematics of parton-medium interaction from RHIC to LHC
• Monte Carlo Simulation for Elastic Energy Loss of Hard Partons in a Hydrodynamical Background
• Hard and soft probe - medium interactions in a 3D hydro+micro approach at RHIC
• Hadron multiplicities, pT-spectra and net-baryon number in central Pb+Pb collisions at the LHC
• Elliptic flow from pQCD + saturation + hydro model
• Contribution of the HMPID detector to the high-pT physics at LHC
• Rapidity and centrality dependence in the percolating colour strings scenario
• Hydrodynamic model of heavy-ion collisions with low momentum components
• Temperature dependent sound velocity in hydrodynamic equations for relativistic heavy-ion collisions
• The domain of soft hadrons in transverse momentum space in high energy collisions