Double collinear splitting amplitudes at next-to-leading order

Germán F. R. Sborlini, Daniel de Florian, Germán Rodrigo
2014 Journal of High Energy Physics  
We compute the next-to-leading order (NLO) QCD corrections to the 1 → 2 splitting amplitudes in different dimensional regularization (DREG) schemes. Besides recovering previously known results, we explore new DREG schemes and analyze their consistency by comparing the divergent structure with the expected behavior predicted by Catani's formula. Through the introduction of scalar-gluons, we show the relation among splittings matrices computed using different schemes. Also, we extended this
more » ... is to cover the double collinear limit of scattering amplitudes in the context of QCD+QED.
doi:10.1007/jhep01(2014)018 fatcat:hmcya4l2arhebhcd4ghoq4e2xa