Anomalous soft photons: status and perspectives
Nuclear Experiment
2024-06-27 v1 High Energy Physics - Experiment
High Energy Physics - Phenomenology
Abstract
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.
Cite
@article{arxiv.2406.17959,
title = {Anomalous soft photons: status and perspectives},
author = {R. Bailhache and D. Bonocore and P. Braun-Munzinger and X. Feal and S. Floerchinger and J. Klein and K. Köhler and P. Lebiedowicz and C. M. Peter and R. Rapp and K. Reygers and W. Schäfer and H. S. Scheid and K. Schweda and J. Stachel and H. van Hees and C. A. van Veen and M. Völkl},
journal= {arXiv preprint arXiv:2406.17959},
year = {2024}
}
Comments
63 pages, 20 figures