TY  - JOUR
AU  - Bailhache, Raphaelle
AU  - Bonocore, D.
AU  - Braun-Munzinger, Peter
AU  - Feal, X.
AU  - Floerchinger, S.
AU  - Klein, J.
AU  - Köhler, K.
AU  - Lebiedowicz, P.
AU  - Peter, C. M.
AU  - Rapp, R.
AU  - Reygers, K.
AU  - Schäfer, W.
AU  - Scheid, H. S.
AU  - Schweda, Kai
AU  - Stachel, Johanna
AU  - van Hees, H.
AU  - van Veen, C. A.
AU  - Völkl, M.
TI  - Anomalous soft photons: Status and perspectives
JO  - Physics reports
VL  - 1097
IS  - arXiv:2406.17959
SN  - 0370-1573
CY  - Amsterdam [u.a.]
PB  - Elsevier Science, North-Holland
M1  - GSI-2025-00294
M1  - arXiv:2406.17959
SP  - 1-40
PY  - 2024
N1  - This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
AB  - This report summarizes the work of the EMMI Rapid Reaction Task Force on “Real and Virtual Photon Production at Ultra-Low Transverse Momentum and Low Mass at the LHC”. We provide an overview of the soft-photon puzzle, i.e., of the long-standing discrepancy between experimental data and predictions based on Low’s soft-photon theorem, also referred to as “anomalous” soft photon production, and we review the current theoretical understanding of soft radiation and soft theorems. We also focus on low-mass dileptons as a tool for determining the electrical conductivity of the medium produced in high-energy nucleus–nucleus collisions. We discuss how both topics can be addressed with the planned ALICE 3 detector at the LHC.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001342368500001
DO  - DOI:10.1016/j.physrep.2024.10.002
UR  - https://repository.gsi.de/record/356916
ER  -