Speaker
Vitaly Magerya
(CERN)
Description
Two-loop virtual amplitudes are one of the key ingredients of an NNLO cross-section calculation. In this talk I would like to describe the precision requirements of evaluating such amplitudes via sector decomposition and quasi-Monte Carlo integration, and to report on satisfying them using double-double floating point number implementation within pySecDec on CPU and GPU.
Based on: 2402.03301, 2305.19768, and related work.
