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 analysis to cover the double collinear limit of scattering amplitudes in the context of QCD+QED.
@article{arxiv.1310.6841,
title = {Double collinear splitting amplitudes at next-to-leading order},
author = {German F. R. Sborlini and Daniel de Florian and German Rodrigo},
journal= {arXiv preprint arXiv:1310.6841},
year = {2014}
}
Comments
61 pages, 14 figures. Final version published in JHEP