Groomed jet mass as a direct probe of collinear parton dynamics

Mrinal Dasgupta, Marco Guzzi, Basem El-Menoufi, Daniele Anderle, Jack Helliwell

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Article number827
JournalEuropean Physical Journal C. Particles and Fields
Issue number9
Publication statusPublished - 1 Sept 2020


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