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arXiv · 2009.14054

Cone-size dependent jet spectrum in heavy-ion collisions

Yacine Mehtar-Tani·Daniel Pablos·Konrad Tywoniuk
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Abstract

Jets in the vacuum correspond to multi-parton configurations that form via a branching process sensitive to the soft and collinear divergences of QCD. In heavy-ion collisions, energy loss processes that are stimulated via interactions with the medium, affect jet observables in a profound way. Jet fragmentation factorizes into a three-stage process, involving vacuum-like emissions above the medium scale, induced emissions enhanced by the medium length and, finally, long-distance vacuum-like fragmentation. This formalism leads to a novel, non-linear resummation of jet energy loss. In this talk we present new results on the combined effects of small-$R$ resummation and energy loss to compute the $R$-dependent jet spectrum in heavy-ion collisions.

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Yacine Mehtar-Tani, Daniel Pablos, Konrad Tywoniuk. 2020-09-29. Cone-size dependent jet spectrum in heavy-ion collisions. https://arxiv.org/abs/2009.14054

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