Sep 9 – 13, 2019
Europe/Zurich timezone

The two-loop five-gluon all-plus helicity amplitude

Sep 9, 2019, 6:00 PM
25m
Chambre du Trésorier

Chambre du Trésorier

Speaker

Dr Dmitry Chicherin (Max Planck Institute for Physics)

Description

As the experimental precision at the LHC keeps improving,
next-to-next-to leading order (NNLO) corrections for scattering processes have become crucial for providing theoretical predictions of comparable accuracy. At present, only observables involving up to four particles are available at this order. The main bottleneck towards higher multiplicity observables is the analytic calculation of the required two-loop scattering amplitudes. I present the first fully analytic result for a full-color two-loop five-particle amplitude: the
five-gluon amplitude in the all-plus helicity configuration. In order to achieve it, we analytically calculated all master integrals that describe the NNLO virtual corrections for the three-jet production. We express the amplitude in a remarkably compact form containing only logarithms, dilogarithms, and rational functions.

Primary author

Dr Dmitry Chicherin (Max Planck Institute for Physics)

Presentation materials