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

Abstract

We calculate the production of prompt and thermal photons from Pb+Pb collisions at 5.02A TeV at the Large Hadron Collider (LHC) and at 39A TeV at the proposed Future Circular Collider (FCC) facility. The photon spectra and anisotropic flow at these energies are compared with the results obtained from 2.76A TeV Pb+Pb collisions at the LHC for three different centrality bins. The prompt photons originating from initial hard scatterings are found to increase by a factor of 1.5 to 2 at 5.02A TeV in the $p_T$ region 2 to 15 GeV and the enhancement is found to be about 5 to 15 times at FCC energy compared to 2.76A TeV in the same $p_T$ region. The evolution of the Quark-Gluon Plasma (QGP) formed in Pb+Pb collisions at LHC and FCC energies are studied using a hydrodynamical model and the $p_T$ spectra and elliptic flow of thermal photons are calculated using state-of-the-art photon rates. The relative enhancement in the production of thermal photons is found to be more compared to prompt photons at FCC than at the LHC energies. Although the production of direct (prompt+thermal) photons is found to enhance significantly with increase in beam energy, the photon elliptic flow increases only marginally and does not show strong sensitivity to the collision energy.

arXiv comment10 pages, 8 figures

References in corpus (63)

• Implications of CTEQ global analysis for collider observables
• Radial and elliptic flow at RHIC: further predictions
• EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
• Flow at the SPS and RHIC as a Quark Gluon Plasma Signature
• Photon Emission from Quark-Gluon Plasma: Complete Leading Order Results
• Enhanced production of direct photons in Au+Au collisions at sqrt(s_NN)=200 GeV and implications for the initial temperature
• Quark mass thresholds in QCD thermodynamics
• The production of photons in relativistic heavy-ion collisions
• Hadronic Production of Thermal Photons
• The Search for the Quark-Gluon Plasma
• Hydrodynamic Models for Heavy Ion Collisions
• Heavy Ion Collisions: Achievements and Challenges
• Photon and dilepton production in supersymmetric Yang-Mills plasma
• Direct photon production in Pb-Pb collisions at $\sqrt{s_\rm{NN}}$ = 2.76 TeV
• Hydrodynamic elliptic and triangular flow in Pb-Pb collisions at sqrt(s)=2.76ATeV
• A new critical study of photon production in hadronic collisions
• Observation of direct-photon collective flow in sqrt(s_NN)=200 GeV Au+Au collisions
• Event-by-event hydrodynamics and elliptic flow from fluctuating initial state
• Thermal Photons and Collective Flow at the Relativistic Heavy-Ion Collider
• Measurement of Direct Photons in pp and Pb-Pb Collisions with ALICE
• Next-to-leading order thermal photon production in a weakly coupled quark-gluon plasma
• Thermal photons as a quark-gluon plasma thermometer revisited
• Azimuthally anisotropic emission of low-momentum direct photons in Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Measurement of Direct-Photon Elliptic Flow in Pb-Pb Collisions at sqrt(NN) = 2.76 TeV
• Pseudo-Critical Enhancement of Thermal Photons in Relativistic Heavy-Ion Collisions
• Production and Elliptic Flow of Dileptons and Photons in the semi-Quark Gluon Plasma
• QGP formation time and direct photons from heavy ion collisions
• Viscous photons in relativistic heavy ion collisions
• Centrality dependence of the direct photon yield and elliptic flow in heavy-ion collisions at sqrt(s)=200 GeV
• RHIC-tested predictions for low-$p_T$ and high-$p_T$ hadron spectra in nearly central Pb+Pb collisions at the LHC
• Anisotropic flow of thermal photons as a quark-gluon plasma viscometer
• Elliptic flow of thermal photons from event-by-event hydrodynamic model
• The Glasma, Photons and the Implications of Anisotropy
• Elliptic flow from thermal photons with magnetic field in holography
• Parametric estimate of the relative photon yields from the Glasma and the Quark-Gluon Plasma in heavy-ion collisions
• Thermal photon $v_2$ with slow quark chemical equilibration
• Elliptic flow of thermal photons and formation time of quark gluon plasma at RHIC
• Photon elliptic flow in relativistic heavy-ion collisions: hadronic versus partonic sources
• Photons as a viscometer of heavy ion collisions
• Enhancement of thermal photon production in event-by-event hydrodynamics
• Light from Cascading Partons in Relativistic Heavy-Ion Collisions
• Collision centrality and ${\tau }_0$ dependence of the emission of thermal photons from fluctuating initial state in ideal hydrodynamic calculation
• Photons from the Early Stages of Relativistic Heavy Ion Collisions
• Elliptic flow of thermal photons in heavy-ion collisions at Relativistic Heavy Ion Collider and Large Hadron Collider
• Heavy ions at the Future Circular Collider
• Holographic Photon Production in Heavy Ion Collisions
• A Tale of Tails: Photon Rates and Flow in Ultra-Relativistic Heavy Ion Collisions
• Electromagnetic probes of a pure-glue initial state in nucleus-nucleus collisions at energies available at the CERN Large Hadron Collider
• A systematic study of the sensitivity of triangular flow to the initial state fluctuations in relativistic heavy-ion collisions
• Direct photons from relativistic heavy-ion collisions
• Nonequilibrium photon production in partonic transport simulations
• Heavy-ion physics studies for the Future Circular Collider
• Formation Time of QGP from Thermal Photon Elliptic Flow
• Anisotropic flow of thermal photons at RHIC and LHC
• Spectra and elliptic flow of thermal photons from full overlap U+U collisions at RHIC
• Thermal photons from fluctuating initial conditions
• Triangular flow of thermal photons from an event-by-event hydrodynamic model for 2.76A TeV Pb+Pb collisions at LHC
• Single photons from relativistic collision of lead nuclei at CERN SPS: A reanalysis
• The effect of neutron skin on inclusive prompt photon production in Pb~+~Pb collisions at the LHC
• Effect of initial-state nucleon shadowing on the elliptic flow of thermal photons
• Nuclear collisions at the Future Circular Collider
• System size dependence of nuclear modification and azimuthal anisotropy of jet quenching
• How brightly does the Glasma shine? Photon production off-equilibrium

Cited by in corpus (4)

• The Present and Future of QCD
• Mean free path of photons in relativistic heavy ion collisions
• Empirical determination of the energy loss of heavy quarks in nuclear collisions at RHIC and LHC energies
• Hydrodynamic model of heavy-ion collisions with low momentum components