CSW rules for massive matter legs and glue loops

Details CSW rules for massive matter legs and glue loops CSW rules for massive matter legs and glue loops

2008-05-29

arxiv.org/abs/0805.4577v1

Nucl.Phys.Proc.Suppl.183:137-142,2008

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, to appear in the proceedings of the international conference on Loops and Legs in Quantum Field Theory, Sondershausen

Scientific paper

10.1016/j.nuclphysbps.2008.09.09

Cachazo-Svrcek-Witten-type Feynman rules for massive matter scalar legs and pure glue loops are presented, obtained by deriving them directly from the space-time action. We comment on the derivation and some sample applications, in particular to calculating one loop effects in pure Yang-Mills theory. Furthermore, we derive CSW rules for effective Higgs-gluon couplings studied in the literature. In addition, it is shown how twistor techniques for deriving canonical field transformations explored for massless scalars extend to massless fermions.

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