Speaker
Description
Recent studies have provided growing evidence that, in the presence of a dense QCD medium, parton showers can be meaningfully interpreted as physical objects. These works have highlighted the role of emission ordering variable and formation-time effects in shaping medium-induced modifications of jet observables. As a consequence, improving the perturbative accuracy of jet quenching calculations and going beyond leading-logarithmic descriptions has become an essential step towards a quantitative and physically consistent interpretation of medium properties.
In this contribution, we present the first implementation of medium-modified parton showers that consistently combines next-to-leading order (NLO) corrections with leading-logarithmic (LL) resummation. We show that NLO corrections lead to sizeable modifications in the effective value of the jet transport coefficients, such as \hat q, with important consequences for jet quenching phenomenology and for comparisons between different theoretical frameworks.
These results constitute a step towards precision jet quenching calculations, where perturbative accuracy and the space–time structure of parton showers must be treated on the same footing.
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