On the computation of one-loop amplitudes with external fermions in 4d heterotic superstrings
arXiv:hep-th/9411015 · doi:10.1016/0550-3213(95)00053-U
Abstract
We present the technical tools needed to compute any one-loop amplitude involving external spacetime fermions in a four-dimensional heterotic string model a` la Kawai-Lewellen-Tye. As an example, we compute the one-loop three-point amplitude with one "photon" and two external massive fermions ("electrons"). As a check of our computation, we verify that the one-loop contribution to the Anomalous Magnetic Moment vanishes if the model has spacetime supersymmetry, as required by the supersymmetric sum rules.
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Cited by in corpus (7)
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