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- Title
Radiation from a gluon-gluino colour-singlet dipole at N<sup>3</sup>LO.
- Authors
Chen, Xuan; Jakubčík, Petr; Marcoli, Matteo; Stagnitto, Giovanni
- Abstract
We compute the quantum chromodynamics (QCD) corrections to the decay of a neutralino to gluinos and partons at next-to-next-to-next-to-leading order (N3LO) in the strong coupling constant αs, integrated separately over the phase-space of two, three, four or five particles in the final state. The resulting matrix elements are related to the quark-gluon antenna functions, completing the set of integrated antenna functions in final-final kinematics required for the extension of the antenna subtraction scheme to N3LO. For a model with massless partons (quarks and gluons) and an arbitrary number of adjoint fermions, we obtained the following new results to O α s 3 : the inclusive cross section for the decay of a neutralino, the renormalization of the effective coupling of a neutralino to a gluino and gluon(s), the gluino collinear anomalous dimension, the gluino contribution to the parton collinear anomalous dimensions and the neutralino-gluino-gluon(s) vertex form factors. A special case of this model is the N = 1 super Yang-Mills theory, where we can relate some of our findings to known results.
- Subjects
QUANTUM chromodynamics; QUANTUM computing; YANG-Mills theory; RADIATION; COUPLING constants; GLUONS; RENORMALIZATION (Physics); ANTENNAS (Electronics)
- Publication
Journal of High Energy Physics, 2023, Vol 2023, Issue 12, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP12(2023)198