TL;DR
This paper reviews how dileptons serve as probes for the hot, dense medium in heavy-ion collisions, comparing theoretical models with recent CERN SPS data.
Contribution
It provides an overview of current theoretical understanding of dilepton phenomenology in heavy-ion collisions and compares it with recent experimental data.
Findings
Agreement between theory and CERN SPS data
Insights into electromagnetic current-correlation functions
Implications for properties of dense nuclear matter
Abstract
Due to their penetrating nature, dileptons are a valuable probe for the properties of the hot and/or dense medium created in relativistic heavy-ion collisions. Dilepton invariant-mass spectra provide direct access to the properties of the electromagnetic current-correlation function in strongly interacting matter. In this paper an overview is given of our current theoretical understanding of the dilepton phenomenology in comparison to recent data in heavy-ion collisions at the CERN SPS.
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