====== TTP00-24 Analytical Result for Dimensionally Regularized Massless Master Non-planar Double Box with One Leg off Shell ======
 
 
   <hidden TTP00-24  Analytical Result for Dimensionally Regularized Massless Master Non-planar Double Box with One Leg off Shell >   The dimensionally regularized massless non-planar double box Feynman
 diagram with powers of propagators equal to one, one leg off the mass shell,
 i.e. with p_1^2=q^2\neq 0, and three legs on shell, p_i^2=0, i=2,3,4, is
 analytically calculated for general values of q^2 and the Mandelstam
 variables s,t and u (not necessarily restricted by the physical condition
 s+t+u=q^2). An explicit result is expressed through  (generalized)
 polylogarithms, up to the fourth order,  dependent on rational combinations of
 q^2,s,t and u, and simple finite two- and three fold Mellin--Barnes
 integrals of products of gamma functions which are easily numerically 
 evaluated for arbitrary non-zero values of the arguments.
 </hidden>
|**V.A. Smirnov**  | 
|**  Phys. Lett.  B500 330-337 2001  **  |
| {{preprints:2000:ttp00-24.pdf|PDF}} {{preprints:2000:ttp00-24.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0011056|arXiv]]   |
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