An alternative subtraction scheme for next-to-leading order QCD calculations

Autor:	Chung, Cheng-Han, Krämer, Michael, Robens, Tania
Rok vydání:	2010
Předmět:	High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1007/JHEP06(2011)144
Popis:	We propose a new subtraction scheme for next-to-leading order QCD calculations. Our scheme is based on the momentum mapping and on the splitting functions derived in the context of an improved parton shower formulation. Compared to standard schemes, the new scheme features a significantly smaller number of subtraction terms and facilitates the matching of NLO calculations with parton showers including quantum interference. We provide formulae for the momentum mapping and the subtraction terms, and present a detailed comparison with the Catani-Seymour dipole subtraction for a variety of 2 -> 2 scattering processes. Comment: 62 pages, 8 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1012.4948 Zobrazit plný text záznamu View this record from Arxiv