Physics

Pure mathematics

Perturbative QCD

Mathematics

Kernel (algebra)

Particle physics

Operating system

Quantum chromodynamics

Jet (fluid)

Gluon

Mathematical analysis

Singularity

Antenna (radio)

Space (punctuation)

Computer science

Subtraction

Telecommunications

Arithmetic

Thermodynamics

Journal of High Energy Physics

A bstract We present the colourful antenna subtraction method, a reformulation of the antenna subtraction scheme for next-to-next-to-leading order (NNLO) calculations in QCD. The aim of this new approach is to achieve a general and process-independent construction of the subtraction infrastructure at NNLO. We rely on the predictability of the infrared singularity structure of one- and two-loop amplitudes in colour space to generate virtual subtraction terms and, subsequently, we define an automatable procedure to systematically infer the expression of the real subtraction terms, guided by the correspondence between unintegrated and integrated antenna functions. To demonstrate the applicability of the described approach, we compute the full colour NNLO correction to gluonic three-jet production pp ( gg ) → ggg , in the gluons-only assumption.

Automation of antenna subtraction in colour space: gluonic processes