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Article Dans Une Revue Phys.Rev.C Année : 2024

Polarized photons from the early stages of relativistic heavy-ion collisions

Résumé

The polarization of real photons emitted from early-time heavy-ion collisions is calculated, concentrating on the contribution from bremsstrahlung and quark-antiquark annihilation processes at leading order in the strong coupling. The effect of an initial momentum space anisotropy of the parton distribution is evaluated using a model for the non-equilibrium scattering kernel for momentum broadening. The effect on the photon polarization is reported for different degrees of anisotropy. The real photons emitted early during in-medium interactions will be dominantly polarized along the beam axis.
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hal-04152031 , version 1 (11-07-2023)

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Sigtryggur Hauksson, Charles Gale. Polarized photons from the early stages of relativistic heavy-ion collisions. Phys.Rev.C, 2024, 109 (3), pp.034902. ⟨10.1103/PhysRevC.109.034902⟩. ⟨hal-04152031⟩
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