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Where is the charm quark energy loss at RHIC?

Magdalena Djordjevic, Miklos Gyulassy

Abstract

Heavy quark energy loss in a hot QCD plasma is computed taking into account the competing effects due to suppression of zeroth order gluon radiation below the plasma frequency and the enhancement of gluon radiation due to first order medium induced Bremsstrahlung. The results suggest a surprising degree of cancellation between the two medium effects for charm quarks and provides a possible explanation for the null effect observed by PHENIX in the prompt electron spectrum in Au+Au at $\surd s=$ 130 AGeV.

Where is the charm quark energy loss at RHIC?

Abstract

Heavy quark energy loss in a hot QCD plasma is computed taking into account the competing effects due to suppression of zeroth order gluon radiation below the plasma frequency and the enhancement of gluon radiation due to first order medium induced Bremsstrahlung. The results suggest a surprising degree of cancellation between the two medium effects for charm quarks and provides a possible explanation for the null effect observed by PHENIX in the prompt electron spectrum in Au+Au at 130 AGeV.

Paper Structure

This paper contains 4 sections, 2 equations.

Table of Contents

  1. Introduction
  2. Plasmon Effect on 0$^{th}$ order Energy Loss
  3. ⁠Medium induced radiative energy loss
  4. The net heavy quark energy loss