skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Photon production and elliptic flow from a momentum-anisotropic quark-gluon plasma

Journal Article · · Physical Review D

The emission of real photons from a momentum-anisotropic quark-gluon plasma (QGP) is affected by both the collective flow of the radiating medium and the modification of the local rest frame emission rate due to the anisotropic momentum distribution of partonic degrees of freedom. In this paper, we first calculate the photon production rate from an ellipsoidally momentum-anisotropic QGP including hard contributions from Compton scattering and quark pair annihilation and soft contribution calculated using the hard thermal loop approximation. We introduce a parametrization of the nonequilibrium rate in order to facilitate its further application in yield and flow calculations. We convolve the anisotropic photon rate with the space-time evolution of QGP provided by 3 + 1d anisotropic hydrodynamics to obtain the yield and the elliptic flow coefficient $$v_2$$ of photons from QGP generated at Pb-Pb collisions at the LHC at 2.76 TeV and Au-Au collisions at the RHIC at 200 GeV. We investigate the effects of various parameters on the results. In particular, we analyze the sensitivity of the results to initial momentum anisotropy.

Research Organization:
Kent State Univ., Kent, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC0013470
OSTI ID:
1641864
Alternate ID(s):
OSTI ID: 1802496
Journal Information:
Physical Review D, Journal Name: Physical Review D Vol. 102 Journal Issue: 1; ISSN 2470-0010
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

References (88)

Photons from the early stages of relativistic heavy-ion collisions journal July 2017
Dilepton and/or photon production in heavy ion collisions and the QCD phase transition journal July 1997
Pseudo-critical enhancement of thermal photons in relativistic heavy-ion collisions? journal January 2015
Universal parametrization of thermal photon rates in hadronic matter journal February 2015
Erratum to: “Hard thermal photon production in relativistic heavy ion collisions” [Phys. Lett. B 510 (2001) 98] journal March 2008
Thermal photons from heavy ion collisions: A spectral function approach journal November 2010
Thermal photons and collective flow at energies available at the BNL Relativistic Heavy-Ion Collider journal November 2011
High-Energy Photons from Passage of Jets through Quark-Gluon Plasma journal March 2003
Direct photon elliptic flow at energies available at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider journal July 2017
Parton self-energies for general momentum-space anisotropy journal March 2018
Elliptic flow of thermal photons from an event-by-event hydrodynamic model journal September 2013
Production of forward rapidity photons in high energy heavy ion collisions journal May 2005
Erratum: High-energy photons from quark-gluon plasma versus hot hadronic gas journal May 1993
Erratum: Prompt photon yield and elliptic flow from gluon fusion induced by magnetic fields in relativistic heavy-ion collisions [Phys. Rev. D 96 , 014023 (2017)] journal December 2017
Wess-Zumino-Witten action and photons from the chiral magnetic effect journal October 2012
Photon and dilepton emission from the quark-gluon plasma: Some general considerations journal February 1985
Photon production in relativistic heavy-ion collisions using rates with two-loop calculations from quark matter journal October 1999
Holographic photon production in heavy ion collisions journal April 2017
Benchmarking a nonequilibrium approach to photon emission in relativistic heavy-ion collisions journal June 2019
Highly anisotropic and strongly dissipative hydrodynamics for early stages of relativistic heavy-ion collisions journal March 2011
Dilepton production and elliptic flow from an anisotropic quark-gluon plasma journal February 2019
Probing gluon saturation with next-to-leading order photon production at central rapidities in proton-nucleus collisions journal January 2017
Thermal photon production rate from nonequilibrium quantum field theory journal September 1997
Collective modes of an anisotropic quark-gluon plasma journal August 2003
Conformal Anomaly as a Source of Soft Photons in Heavy Ion Collisions journal November 2012
Prompt, pre-equilibrium, and thermal photons in relativistic nuclear collisions journal June 2020
Fermionic collective modes of an anisotropic quark-gluon plasma journal September 2006
Hadronic production of thermal photons journal January 2004
Parametric estimate of the relative photon yields from the glasma and the quark-gluon plasma in heavy-ion collisions journal May 2017
Direct photon production at finite chemical potential from quark–gluon plasma journal January 2015
Dissipative dynamics of highly anisotropic systems journal December 2010
Photons from thermalizing matter in heavy ion collisions journal October 2018
Magneto-sonoluminescence and its signatures in photon and dilepton production in relativistic heavy ion collisions journal July 2014
Photon production from an anisotropic quark-gluon plasma journal July 2007
Elliptic flow of thermal photons in heavy-ion collisions at energies available at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider journal December 2011
Soft amplitudes in hot gauge theories: A general analysis journal June 1990
Hard loop approach to anisotropic systems journal July 2000
Electromagnetic radiation as a probe of the initial state and of viscous dynamics in relativistic nuclear collisions journal July 2016
High-energy photons from quark-gluon plasma versus hot hadronic gas journal November 1991
Effective distributions of quasiparticles for thermal photons journal July 2015
Bulk viscous evolution within anisotropic hydrodynamics journal July 2014
Centrality dependence of direct photons in Au + Au collisions at s NN = 200 GeV journal October 2005
Direct real photons in relativistic heavy ion collisions journal March 2020
Viscous photons in relativistic heavy ion collisions journal December 2011
Next-to-leading order thermal photon production in a weakly coupled quark-gluon plasma journal May 2013
Virtual photon polarization in ultrarelativistic heavy-ion collisions journal April 2017
Thermal photon v 2 with slow quark chemical equilibration journal August 2014
Effects of initial-state nucleon shadowing on the elliptic flow of thermal photons journal March 2018
Production of photons in relativistic heavy-ion collisions journal April 2016
Lattice constraints on the thermal photon rate journal July 2016
Beam Energy and Centrality Dependence of Direct-Photon Emission from Ultrarelativistic Heavy-Ion Collisions journal July 2019
Relativistic anisotropic hydrodynamics journal July 2018
Calculation of screening in a hot plasma journal April 1991
Prompt photon yield and elliptic flow from gluon fusion induced by magnetic fields in relativistic heavy-ion collisions journal July 2017
Hadronic and partonic sources of direct photons in relativistic heavy-ion collisions journal November 2015
Parametrization of thermal photon emission rates from mesonic matter journal June 1992
Anisotropic hydrodynamic modeling of 200 GeV Au-Au collisions journal April 2019
Quark self-energy in an ellipsoidally anisotropic quark-gluon plasma journal December 2016
Thermal photon production in high-energy nuclear collisions journal March 1995
A tale of tails: Photon rates and flow in ultra-relativistic heavy ion collisions journal February 2016
Testing different formulations of leading-order anisotropic hydrodynamics journal February 2016
Dilepton and photon production in the presence of a nontrivial Polyakov loop journal October 2015
Anisotropic Hydrodynamics: Three Lectures journal January 2014
The non-equilibrium attractor for kinetic theory in relaxation time approximation journal December 2018
Photon and dilepton production in high-energy heavy-ion collisions journal May 2015
Azimuthally anisotropic emission of low-momentum direct photons in Au + Au collisions at s N N = 200 GeV journal December 2016
Photon emission from quark-gluon plasma out of equilibrium journal January 2018
Photon emission from quark-gluon plasma: complete leading order results journal December 2001
Direct photon elliptic flow in Pb–Pb collisions at s NN = 2.76 TeV journal February 2019
Anisotropic flow of thermal photons as a quark-gluon plasma viscometer journal February 2015
Anisotropic nonequilibrium hydrodynamic attractor journal February 2018
Elliptic Flow of Thermal Photons in Relativistic Nuclear Collisions journal May 2006
Thermal photons and dileptons from non-equilibrium quark-gluon plasma journal July 1994
( 3 + 1 ) D Quasiparticle Anisotropic Hydrodynamics for Ultrarelativistic Heavy-Ion Collisions journal July 2017
Role of magnetic field in photon excess in heavy ion collisions journal January 2015
Production and Elliptic Flow of Dileptons and Photons in a Matrix Model of the Quark-Gluon Plasma journal February 2015
Exact solution of the ( 0 + 1 )-dimensional Boltzmann equation for a massive gas journal May 2014
Anisotropic hydrodynamics for conformal Gubser flow journal December 2016
Pion and thermal photon spectra as a possible signal for a phase transition journal April 1995
The low and intermediate mass dilepton and photon results journal November 2014
Anisotropic hydrodynamic modeling of 2.76 TeV Pb-Pb collisions journal October 2017
Hard thermal photon production in relativistic heavy ion collisions journal June 2001
Photon production from a nonequilibrium quark-gluon plasma journal March 2016
Azimuthal Asymmetry of Direct Photons in High Energy Nuclear Collisions journal January 2006
PHENIX measurements of low momentum direct photon radiation journal February 2019
Quark-gluon plasma and hadronic production of leptons, photons and psions journal September 1978
Photon emission from a momentum-anisotropic quark-gluon plasma journal January 2015
Elliptic flow from thermal photons with magnetic field in holography journal January 2014

Similar Records

Dilepton production and elliptic flow from an anisotropic quark-gluon plasma
Journal Article · Tue Feb 19 00:00:00 EST 2019 · Physical Review D · OSTI ID:1641864

Anisotropic escape mechanism and elliptic flow of bottomonia
Journal Article · Tue Nov 12 00:00:00 EST 2019 · Physical Review C · OSTI ID:1641864

Photons from anisotropic quark-gluon plasma
Journal Article · Mon Dec 15 00:00:00 EST 2008 · Physical Review. C, Nuclear Physics · OSTI ID:1641864