Comment on: "Transverse-Mass $M_{\perp }$ Dependence of Dilepton Emission from Preequilibrium and Quark-Gluon Plasma in High Energy Nucleus-Nucleus Collisions"

Abstract

In a recent Letter, Geiger presents calculations of the dilepton emission from the early stage of ultrarelativistic heavy ion collisions using the parton cascade model (PCM). He shows that the $M_{\perp }$ scaling is not observed. In this Comment, we point out that this is largely due to a defect in the PCM.

Comments: 3 pages, LaTex, LBL-35269