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| + | ====== TTP02-15 Special case of sunset: reduction and epsilon-expansion ====== | ||
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| + | < | ||
| + | mass scales m and M at the threshold and pseudotreshold | ||
| + | that cannot be treated by earlier published formula. | ||
| + | The complete reduction to master integrals | ||
| + | is given. The master integrals are evaluated as series in | ||
| + | ratio m/M and in epsilon with the help of differential equation method. | ||
| + | The rules of asymptotic expansion in the case when q^2 is | ||
| + | at the (pseudo)threshold are given. | ||
| + | </ | ||
| + | |**A.Onishchenko, | ||
| + | | {{preprints: | ||
| + | | | | ||