Anomalous soft photons: status and perspectives
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 pre...
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| creator | Bailhache, R Bonocore, D Braun-Munzinger, P Feal, X Floerchinger, S Klein, J Köhler, K Lebiedowicz, P Peter, C M Rapp, R Reygers, K Schäfer, W Scheid, H S Schweda, K Stachel, J H van Hees van Veen, C A Völkl, M |
| description | 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. |
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| identifier | EISSN: 2331-8422 |
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| issn | 2331-8422 |
| language | eng |
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| source | Freely Accessible Journals |
| subjects | Electrical resistivity Large Hadron Collider Photons Theorems Transverse momentum |
| title | Anomalous soft photons: status and perspectives |
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