Abstract
The antenna subtraction method handles real radiation contributions in higher order corrections to jet observables. The method is based on antenna functions, which encapsulate all unresolved radiation between a pair of hard radiator partons. To apply this method to compute hadron collider observables, initial-initial antenna functions with both radiators in the initial state are required in unintegrated and integrated forms. In view of extending the antenna subtraction method to next-to-next-to-leading order (NNLO) calculations at hadron colliders, we derive the full set of initial-initial double real radiation antenna functions in integrated form.
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Gehrmann-De Ridder, A., Gehrmann, T. & Ritzmann, M. Antenna subtraction at NNLO with hadronic initial states: double real initial-initial configurations. J. High Energ. Phys. 2012, 47 (2012). https://doi.org/10.1007/JHEP10(2012)047
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DOI: https://doi.org/10.1007/JHEP10(2012)047