Two-loop five-point massless QCD amplitudes within the IBP approach

Particle Physics Theory seminar

Two-loop five-point massless QCD amplitudes within the IBP approach

• Event time: 2:00pm
• Event date: 31st October 2018
• Speaker: Herschel Chawdhry (University of Cambridge)
• Location: Higgs Centre Seminar Room, Room 4305,

Event details

I will discuss my recent paper hep-ph/1805.09182, where we solve the integration-by-parts (IBP) identities needed for the computation of any planar two-loop five-point massless amplitude in QCD. We also derive some new results for the most complicated non-planar topology with irreducible numerators of power as high as six. We do this by applying a new strategy for solving the IBP identities which scales better for problems with a large number of scales and/or master integrals. Our results are a proof of principle that the remaining non-planar contributions for all two-loop five-point massless QCD amplitudes can be computed in analytic form.