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Date
2009-11-21Type
- Journal Article
ETH Bibliography
yes
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Abstract
We extend the generalized D-dimensional unitarity method for numerical evaluation of one-loop amplitudes by incorporating massive particles. The issues related to extending the spinor algebra to higher dimensions, treatment of external self-energy diagrams and mass renormalization are discussed within the context of the D-dimensional unitarity method. To validate our approach, we calculate in QCD the one-loop scattering amplitudes of a massive quark pair with up to three additional gluons for arbitrary spin states of the external quarks and gluons. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000084966Publication status
publishedExternal links
Journal / series
Nuclear Physics BVolume
Pages / Article No.
Publisher
ElsevierMore
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ETH Bibliography
yes
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