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The Singular Behaviour of QCD Amplitudes at Two-loop Order
We discuss the structure of infrared singularities in on-shell QCD amplitudes at two-loop order. We present a general factorization formula that controls all the $\ep$-poles of the dimensionally regularized amplitudes. The dependence on the regularization scheme is considered and the coefficients of...
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| Lenguaje: | eng |
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1998
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| Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(98)00332-3 http://cds.cern.ch/record/347279 |