Four- and five-loop results with the Forcer program

by Takahiro Ueda (Nikhef)

Monday 10 Apr 2017, 16:30 → 17:30 Europe/Berlin

Seminar room 2, building 2A (DESY Hamburg)

Forcer is a new FORM program for analytically calculating four-loop massless propagator-type Feynman integrals. It can be considered as an extension of the three-loop Mincer program. However, due to a complicated program structure at the four-loop level, a considerable amount of automatization is required. In this talk, I will explain techniques used in Forcer and then discuss physics results obtained by Forcer, which include five-loop results with the R*-operation.