DOE OSTI · 3018275
Massive tree-level splitting functions beyond kinematical limits
Abstract
We present a compact form of the massive 1 → 3 tree-level QCD splitting functions and discuss a decomposition of the results in terms of lower-order expressions, scalar dipole antenna functions and pure higher-order remainders. The two-gluon radiator functions introduced in this context are novel and generalize expressions obtained from the double-soft approximation. Our results are obtained without reference to soft or quasicollinear limits.
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Höche, Stefan [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)] (ORCID:0000000213706059), LeBlanc, Matt [Brown Univ., Providence, RI (United States)] (ORCID:0000000159776418), Roloff, Jennifer [Brown Univ., Providence, RI (United States)] (ORCID:0000000164793079), Whitman, Grant [Brown Univ., Providence, RI (United States)] (ORCID:0000000213527659). 2026-03-04. Massive tree-level splitting functions beyond kinematical limits. https://doi.org/10.1103/7jj6-qfqh
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