Loop integration results using numerical extrapolation for a non-scalar integral
E. de Doncker, Y. Shimizu, J. Fujimoto, F. Yuasa, K. Kaugars, L. Cucos, J. Van Voorst
Abstract
Loop integration results have been obtained using numerical integration and extrapolation. An extrapolation to the limit is performed with respect to a parameter in the integrand which tends to zero. Results are given for a non-scalar four-point diagram. Extensions to accommodate loop integration by existing integration packages are also discussed. These include: using previously generated partitions of the domain and roundoff error guards.
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