Gluon radiation from a classical point particle: recoil effects
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2023
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The European Physical Journal C
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Abstract
The gluon radiation spectrum of a classical particle
struck by a sheet of colored glass, is a key ingredient
in understanding the distribution of energy and baryon density
in the fragmentation region, particularly in the initial
stages of heavy ion collisions. However, the currently known
classical spectrum has a troublesome high-momentum tail
(Kajantie et al. in Phys. Rev. D 100(5):054011, 2019;
Phys Rev D 101(5):054012, 2020). By comparing tree-level
bremsstrahlung of a spin-less quark to the above-mentioned
known result, we propose an interpolating formula that takes
into account the recoil of the struck particle, and therefore
produces the correct perturbative behaviour at high momentum
of the radiated gluon.
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Reference:
Kolbé, I. & Lushozi, M. 2023. Gluon radiation from a classical point particle: recoil effects. The European Physical Journal C. 83(10):886.