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Subtraction terms for one-loop amplitudes with one unresolved parton

Stefan Weinzierl
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Abstract

Fully differential next-to-next-to-leading order calculations require a method to cancel infrared singularities. In a previous publication, I discussed the general setup for the subtraction method at NNLO. In this paper I give all subtraction terms for electron-positron annihilation associated with one-loop amplitudes with one unresolved parton. These subtraction terms are integrated within dimensional regularization over the unresolved one-particle phase space. The results can be used with all variants of dimensional regularization (conventional dimensional regularization, the 't Hooft-Veltman scheme and the four-dimensional scheme).

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Stefan Weinzierl. 2003-06-25. Subtraction terms for one-loop amplitudes with one unresolved parton. https://doi.org/10.1088/1126-6708%2F2003%2F07%2F052

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