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 owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)

Meyer, H., Cè, M., Harris, T., Toniato, A., Török, C. (2022). Deep inelastic scattering off quark-gluon plasma and its photon emissivity. In 38th International Symposium on Lattice Field Theory, LATTICE 2021. Sissa Medialab Srl [10.22323/1.396.0269].

Deep inelastic scattering off quark-gluon plasma and its photon emissivity

Cè, Marco;Harris, Tim;
2022

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 owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)
paper
Lattice QCD; Quark-Gluon Plasma
English
8th International Symposium on Lattice Field Theory, LATTICE 2021 - 26 July 2021through 30 July 2021
2021
38th International Symposium on Lattice Field Theory, LATTICE 2021
2022
396
269
https://pos.sissa.it/396/269
open
Meyer, H., Cè, M., Harris, T., Toniato, A., Török, C. (2022). Deep inelastic scattering off quark-gluon plasma and its photon emissivity. In 38th International Symposium on Lattice Field Theory, LATTICE 2021. Sissa Medialab Srl [10.22323/1.396.0269].
File in questo prodotto:
File Dimensione Formato  
Meyer-2022-PoS-VoR.pdf

accesso aperto

Descrizione: Intervento a convegno
Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Licenza: Creative Commons
Dimensione 387.76 kB
Formato Adobe PDF
387.76 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/423678
Citazioni
  • Scopus 2
  • ???jsp.display-item.citation.isi??? ND
Social impact