Charge-dependent flow as evidence of strong electromagnetic fields in heavy-ion collisions

Abstract

The extremely large electromagnetic fields generated in heavy-ion collisions provide access to novel observables that are expected to constrain various key transport properties of the quark-gluon plasma and could help solve one of the outstanding puzzles in QCD: the strong CP problem. In this review we present a brief overview of the theoretical and experimental characterization of these electromagnetic fields. After reviewing the current state, emphasising one of the observables -- the charge-dependent flow -- we discuss the various discrepancies between the measurements and theoretical predictions. Finally, to help resolve the discrepancies, we suggest new measurements and theoretical ideas.

arXiv commentInvited review from Modern Physics Letter A

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Cited by in corpus (16)

• Overview of high-density QCD studies with the CMS experiment at the LHC
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• Non-perturbative heavy quark diffusion coefficients in arbitrarily magnetized quark-gluon plasma
• Electric-charge-dependent directed flow splitting of produced quarks in Au+Au collisions