Is there a unique thermal source of dileptons in Pb(158 AGeV) + Au, Pb reactions?

TL;DR

This paper investigates whether a single thermal source explains dilepton production in heavy-ion collisions, analyzing invariant mass and transverse momentum spectra with considerations of flow effects.

Contribution

It introduces an analysis suggesting a unique thermal source accounts for dilepton spectra in Pb-Au and Pb reactions, including flow effects.

Findings

Evidence for a single thermal source in dilepton spectra

Discussion of flow pattern effects on spectra

Implications for understanding hot dense matter

Abstract

An analysis of the dilepton measurements in the reactions Pb(158 A$\cdot$GeV) + Au, Pb points to a unique thermal source contributing to the invariant mass and transverse momentum spectra. Effects of the flow pattern are discussed.