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+====== TTP02-39 The analytic value of a 3-loop sunrise graph in a particular kinematical configuration ======
+   <hidden TTP02-39  The analytic value of a 3-loop sunrise graph in a particular kinematical configuration > We consider the scalar integral associated to the 3-loop sunrise graph
+ with a massless line, two massive lines of equal mass $M$, a fourth line of
+ mass equal to $Mx$, and the external invariant timelike and equal to the
+ square of the fourth mass. We write the differential equation in $x$
+ satisfied by the integral, expand it in the continuous dimension $d$
+ around $d=4$ and solve the system of the resulting chained differential
+ equations in closed analytic form, expressing the solutions in terms of
+ Harmonic Polylogarithms. As a byproduct, we give the limiting values of
+ the coefficients of the $(d-4)$ expansion at $x=1$ and $x=0$.
+ </hidden>
+|**P. Mastrolia, E. Remiddi**  |
+|**  Nucl.Phys.B  657 397-406 2003  **  |
+| {{preprints:2002:ttp02-39.pdf|PDF}} {{preprints:2002:ttp02-39.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0211451|arXiv]]   |
+| |