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arXiv · 2109.06571

Full solution of the medium-induced radiation spectrum

Carlota Andres·Liliana Apolinario·Fabio Dominguez
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Abstract

New measurements of jet quenching observables at RHIC and at the LHC, such as jet substructure observables, demand an increased precision in the theory calculations describing medium-induced radiation of gluons. Closed expressions for the gluon spectrum including a full resummation of multiple scatterings have been known for the past 20 years. Still they have only been evaluated in specific limits either taking a few terms in an opacity expansion or by employing a Gaussian approximation for the interaction potential -- which misses essential physical effects. We present here a new flexible method to compute the full spectrum for a realistic interaction potential, thus allowing us for the first time to properly quantify the effect of the all-order resummation of multiple scatterings. This new approach paves the way for precision phenomenological studies including multiple scattering effects such as coherence phenomena.

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Carlota Andres, Liliana Apolinario, Fabio Dominguez. 2021-09-14. Full solution of the medium-induced radiation spectrum. https://doi.org/10.22323/1.387.0125

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