Suppression of forward dilepton production from an anisotropic quark-gluon plasma

Abstract

We calculate the rapidity dependence of leading-order medium dilepton yields resulting from a quark-gluon plasma which has a local time-dependent anisotropy in momentum space. We present a phenomenological model which includes temporal evolution of the plasma anisotropy parameter, xi, and the hard momentum scale, p_hard. Our model interpolates between 1+1 dimensional collisionally-broadened expansion at early times and 1+1 dimensional ideal hydrodynamic expansion at late times. Using our model, we find that at LHC energies, forward high-energy medium dilepton production would be suppressed by up to a factor of 3 if one assumes an isotropization/thermalization time of 2 fm/c. Therefore, it may be possible to use forward dilepton yields to experimentally determine the time of onset of locally isotropic hydrodynamic expansion of the quark-gluon plasma as produced in ultrarelativistic heavy-ion collisions.

arXiv comment12 pages, 5 figures

References in corpus (27)

• Radial and elliptic flow at RHIC: further predictions
• Conformal Relativistic Viscous Hydrodynamics: Applications to RHIC results at sqrt(s_NN) = 200 GeV
• Bottom-up thermalization in heavy ion collisions
• Collective flow and two-pion correlations from a relativistic hydrodynamic model with early chemical freeze out
• Collective Modes of an Anisotropic Quark-Gluon Plasma
• QCD Plasma Instabilities and Bottom-Up Thermalization
• Collective modes of an Anisotropic Quark-Gluon Plasma II
• Charged Meson Rapidity Distributions in central Au+Au Collisions at sqrt(s_nn) = 200 GeV
• Is early thermalization achieved only near midrapidity at RHIC ?
• Hard Loop Approach to Anisotropic Systems
• Recent results in relativistic heavy ion collisions: from ``a new state of matter'' to "the perfect fluid"
• Instabilities of an anisotropically expanding non-Abelian plasma: 1D+3V discretized hard-loop simulations
• Hydrodynamic afterburner for the Color Glass Condensate and the parton energy loss
• Pre-equilibrium dilepton production from an anisotropic quark-gluon plasma
• The turbulent spectrum created by non-Abelian plasma instabilities
• Charged-Particle Pseudorapidity Distributions in Au+Au Collisions at sqrt(s_NN)=62.4 GeV
• A model of the effect of collisions on QCD plasma instabilities
• Non-Abelian Plasma Instabilities for Extreme Anisotropy
• Measuring Quark-Gluon-Plasma Thermalization Time with Dileptons
• 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
• Hydrodynamical analysis of hadronic spectra in the 130 GeV/nucleon Au+Au collisions
• The impact of QCD plasma instabilities on bottom-up thermalization
• Charged particle flow measurement for $|\eta |<5.3$ with the PHOBOS detector
• A model for the spacetime evolution of heavy-ion collisions at RHIC
• Thermal photons as a measure for the rapidity dependence of the temperature
• Evidence for the Onset of Deconfinement from Longitudinal Momentum Distributions? Observation of the Softest Point of the Equation of State
• Dilepton production as a measure of QGP thermalization time

Cited by in corpus (14)

• Dissipative Dynamics of Highly Anisotropic Systems
• Thermodynamics and Instabilities of a Strongly Coupled Anisotropic Plasma
• Probing strongly coupled anisotropic plasma
• Non-boost-invariant anisotropic dynamics
• Relativistic Fluid Dynamics In and Out of Equilibrium -- Ten Years of Progress in Theory and Numerical Simulations of Nuclear Collisions
• Electromagnetic signatures of a strongly coupled anisotropic plasma
• Dilepton production from the quark-gluon plasma using (3+1)-dimensional anisotropic dissipative hydrodynamics
• Dilepton production and elliptic flow from an anisotropic quark-gluon plasma
• More on thermal probes of a strongly coupled anisotropic plasma
• Matching pre-equilibrium dynamics and viscous hydrodynamics
• Virtual photon polarization in ultrarelativistic heavy-ion collisions
• Rapidity distribution of photons from an anisotropic Quark-Gluon-Plasma
• Jet-photons from an anisotropic {\em Quark-Gluon-Plasma}
• Photon and dilepton production from a non-equilibrium quark-gluon plasma