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arXiv · 2007.10355

Groomed jet mass as a direct probe of collinear parton dynamics

Daniele Anderle·Mrinal Dasgupta·Basem Kamal El-Menoufi·Marco Guzzi·Jack Helliwell
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Abstract

We study the link between parton dynamics in the collinear limit and the logarithmically enhanced terms of the groomed jet mass distribution, for jets groomed with the modified mass-drop tagger (mMDT). While the leading-logarithmic (LL) result is linked to collinear evolution with leading-order splitting kernels, here we derive the NLL structure directly from triple-collinear splitting kernels. The calculation we present is a fixed-order calculation in the triple-collinear limit, independent of resummation ingredients and methods. It therefore constitutes a powerful cross-check of the NLL results previously derived using the SCET formalism and provides much of the insight needed for resummation within the traditional QCD approach.

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Daniele Anderle, Mrinal Dasgupta, Basem Kamal El-Menoufi, Marco Guzzi, Jack Helliwell. 2020-07-20. Groomed jet mass as a direct probe of collinear parton dynamics. https://arxiv.org/abs/2007.10355

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