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Title: Electric conductivity of QCD matter and dilepton spectra in heavy-ion collisions
The electric conductivity, σ el , is a fundamental transport coefficient of QCD matter that can be related to the zero-energy limit of the electromagnetic (EM) spectral function at vanishing three-momentum in the medium. The EM spectral function is also the central quantity to describe the thermal emission rates and pertinent spectra of photon and dilepton radiation in heavy-ion collisions. Employing a model for dilepton rates that combines hadronic many-body theory with nonperturbative QGP emission constrained by lattice QCD which describes existing dilepton measurements in heavy-ion collisions, I investigate the sensitivity of low-mass dilepton spectra in Pb-Pb collisions at the CERN Large Hadron Collider (LHC) to σ el . In particular, I separately evaluate the contributions from QGP and hadronic emission, and identify signatures that can help to extract σ el from high-precision experimental data expected to be attainable with future detector systems at the LHC. Published by the American Physical Society2024  more » « less
Award ID(s):
2209335
PAR ID:
10588569
Author(s) / Creator(s):
Publisher / Repository:
APS Journals
Date Published:
Journal Name:
Physical Review C
Volume:
110
Issue:
5
ISSN:
2469-9985
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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