Year: 2026
Type: article
Abstract: A bstract We compute the primary Lund plane density for jets initiated by a massive ( b ) quark to single logarithmic accuracy in Quantum Chromodynamics (QCD). In order to capture mass effects, we consider quasi-collinear factorisation and we include contributions from the running of the QCD coupling and from collinear evolution, in a variable flavour-number scheme. Furthermore, the resummation of soft logarithms, including clustering effects, is performed numerically, keeping the full dependence on the b -quark mass. While our all-order results can be applied to both hadron and lepton colliders, we present, as first phenomenological application, the resummed calculation of the Lund plane density in e + e − collisions at $$ \sqrt{s} $$ s = M Z , matched to tree-level matrix elements.
Source: Journal of High Energy Physics
Authors: Andrea Ghira, Simone Marzani, Gregory Soyez
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7162139050