Photon and dilepton emission anisotropy for a magnetized quark-gluon plasma

Abstract

We study the higher-order anisotropy coefficients $v_4$ and $v_6$ in the photon and dilepton emission from a hot magnetized quark-gluon plasma. Together with the earlier predictions for $v_2$, these results show a distinctive pattern of the anisotropy coefficients in several kinematic regimes. In the case of photon emission, nonzero coefficients $v_n$ (with even $n$) have opposite signs at small and large values of the transverse momentum (i.e., $k_T\lesssim \sqrt{|eB|}$ and $k_T\gtrsim \sqrt{|eB|}$, respectively). Additionally, the $v_n$ signs alternate with increasing $n$, and their approximate values decrease as $1/n^2$ in magnitude. The anisotropy of dilepton emission is well pronounced only at large transverse momenta and small invariant masses (i.e., when $k_T\gtrsim \sqrt{|eB|}$ and $M\lesssim \sqrt{|eB|}$). The corresponding $v_4$ and $v_6$ coefficients are of the same magnitude and show a similar alternating sign pattern with increasing $n$ as in the photon emission.

arXiv comment12 pages, 6 multi-panel figures, final version published in Physical Review D

References in corpus (74)

• 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
• The PHOBOS Perspective on Discoveries at RHIC
• The Chiral Magnetic Effect
• The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation"
• Collective flow and viscosity in relativistic heavy-ion collisions
• Estimate of the magnetic field strength in heavy-ion collisions
• Magnetars
• Elliptic and triangular flow in event-by-event (3+1)D viscous hydrodynamics
• Event-by-event generation of electromagnetic fields in heavy-ion collisions
• Chiral Magnetic and Vortical Effects in High-Energy Nuclear Collisions --- A Status Report
• Quantum field theory in a magnetic field: From quantum chromodynamics to graphene and Dirac semimetals
• Electromagnetic field evolution in relativistic heavy-ion collisions
• Charge separation induced by P-odd bubbles in QCD matter
• Photon Emission from Quark-Gluon Plasma: Complete Leading Order Results
• The Quark-Gluon Plasma in Equilibrium
• Mapping the Phases of Quantum Chromodynamics with Beam Energy Scan
• Photon Emission from Ultrarelativistic Plasmas
• Enhanced production of direct photons in Au+Au collisions at sqrt(s_NN)=200 GeV and implications for the initial temperature
• Electromagnetic fields and anomalous transports in heavy-ion collisions --- A pedagogical review
• Heavy Ion Collisions: Achievements and Challenges
• Direct photon production in Pb-Pb collisions at $\sqrt{s_\rm{NN}}$ = 2.76 TeV
• Observation of direct-photon collective flow in sqrt(s_NN)=200 GeV Au+Au collisions
• Azimuthally fluctuating magnetic field and its impacts on observables in heavy-ion collisions
• Bremsstrahlung and photon production in thermal QCD
• Conformal anomaly as a source of soft photons in heavy ion collisions
• Thermal Photons and Collective Flow at the Relativistic Heavy-Ion Collider
• Measurement of Direct Photons in pp and Pb-Pb Collisions with ALICE
• Effective QCD and transport description of dilepton and photon production in heavy-ion collisions and elementary processes
• Next-to-leading order thermal photon production in a weakly coupled quark-gluon plasma
• Elliptic flow of thermal photons in relativistic nuclear collisions
• Thermal Dileptons as Fireball Thermometer and Chronometer
• Azimuthally anisotropic emission of low-momentum direct photons in Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• 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
• Photon production from an anisotropic quark-gluon plasma
• QGP formation time and direct photons from heavy ion collisions
• Initial value problem for magnetic field in heavy ion collisions
• Viscous photons in relativistic heavy ion collisions
• Electromagnetic radiation by quark-gluon plasma in magnetic field
• Centrality dependence of the direct photon yield and elliptic flow in heavy-ion collisions at sqrt(s)=200 GeV
• Electromagnetic spectral properties and Debye screening of a strongly magnetized hot medium
• Hard Thermal Photon Production in Relativistic Heavy Ion Collisions
• Azimuthal Asymmetry of Direct Photons in High Energy Nuclear Collisions
• The Glasma, Photons and the Implications of Anisotropy
• Elliptic flow from thermal photons with magnetic field in holography
• Thermal photon $v_2$ with slow quark chemical equilibration
• Magnetic contribution to dilepton production in heavy-ion collisions
• Dilepton production rate in a hot and magnetized quark-gluon plasma
• Elliptic flow of thermal photons and formation time of quark gluon plasma at RHIC
• Direct photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Ellipticity of photon emission from strongly magnetized hot QCD plasma
• Spin Hydrodynamic Generation in the Charged Subatomic Swirl
• Electromagnetic spectral function and dilepton rate in a hot magnetized QCD medium
• Photon production from non-equilibrium QGP in heavy ion collisions
• The Exact Evolution Equation of the Curvature Perturbation for Closed Universe
• Gamma-Ray Bursts as Sources of Strong Magnetic Fields
• On the role of magnetic field in photon excess in heavy ion collisions
• Flows and polarization of early photons with magnetic field at strong coupling
• Dilepton and photon production in the presence of a nontrivial Polyakov loop
• Effect of magnetic field on the photon radiation from quark-gluon plasma in heavy ion collisions
• A Tale of Tails: Photon Rates and Flow in Ultra-Relativistic Heavy Ion Collisions
• Effects of anomalous magnetic moment of quarks on the dilepton production from hot and dense magnetized quark matter using the NJL model
• Dilepton production from magnetized quark matter with an anomalous magnetic moment of the quarks using a three-flavor PNJL model
• Electromagnetic probes of a pure-glue initial state in nucleus-nucleus collisions at energies available at the CERN Large Hadron Collider
• Effect of magnetic field on dilepton production in a hot plasma
• Rate and ellipticity of dilepton production in a magnetized quark-gluon plasma
• Neutrino-electron processes in a strongly magnetized thermal plasma
• Probing the early-time dynamics of relativistic heavy-ion collisions with electromagnetic radiation
• Hard dilepton production from a weakly magnetized hot QCD medium
• Polarization tensor of magnetized quark-gluon plasma at nonzero baryon density
• Lepton pair production from a hot and dense QCD medium in the presence of an arbitrary magnetic field
• Spectral function and dilepton rate from a strongly magnetised hot and dense medium in the light of mean field models
• Anisotropy of Low Energy Direct Photons in Relativistic Heavy Ion Collisions

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