The expansion by regions in πK scattering
نویسنده
چکیده
We discuss a number of two loop (vertex) integrals relevant for πK scattering at threshold. As such these are functions of two well separated mass scales, Mπ/MK ≪ 1. The method of regions allows an expansion in this mass ratio prior to the integration. In the cases considered, the coefficients in this expansion can be evaluated with elementary methods.
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تاریخ انتشار 2006