| Article | |
| Report number | arXiv:2112.00450 ; CERN-TH-2021-167 |
| Title | Deep inelastic scattering off quark-gluon plasma and its photon emissivity |
| Author(s) | Meyer, Harvey B. (U. Mainz, PRISMA ; Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Cè, Marco (CERN) ; Harris, Tim (Edinburgh U.) ; Toniato, Arianna (U. Mainz, PRISMA) ; Török, Csaba (U. Mainz, PRISMA) |
| Publication | 2022-05-16 |
| Imprint | 2021-12-01 |
| Number of pages | 8 |
| Note | 8 pages, 3 figures |
| In: | PoS LATTICE2021 (2022) 269 |
| In: | 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.269 |
| DOI | 10.22323/1.396.0269 |
| Subject category | hep-ph ; Particle Physics - Phenomenology ; hep-lat ; Particle Physics - Lattice |
| Abstract | The photon emissivity of quark-gluon plasma probes the interactions in the medium and differs qualitatively between a weakly coupled and a strongly coupled plasma in the soft-photon regime. The photon emissivity is given by the product of kinematic factors and a spectral function associated with the two-point correlator of the electromagnetic current at lightlike kinematics. A certain Euclidean correlator at imaginary spatial momentum can be calculated in lattice QCD and is given by an integral over the relevant spectral function at lightlike kinematics. I present a first exploratory lattice calculation of this correlator. Secondly, I show how Euclidean correlators at imaginary spatial momenta can also be used to probe the regime of deep inelastic scattering off quark-gluon plasma, which reveals its parton distribution function. |
| Copyright/License | publication: (License: CC-BY-NC-ND-4.0) preprint: © 2021-2024 the author(s) (License: CC BY 4.0) |
Corresponding record in: Inspire
Запись создана 2021-12-03, последняя модификация 2023-01-31