====== TTP02-15 Special case of sunset: reduction and epsilon-expansion ======
 
 
   <hidden TTP02-15  Special case of sunset: reduction and epsilon-expansion > We consider two loop sunset diagrams with two
 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.
 </hidden>
|**A.Onishchenko, O.Veretin**  | 
| {{preprints:2002:ttp02-15.pdf|PDF}} {{preprints:2002:ttp02-15.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0207091|arXiv]]   |
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