7 November 2026
University of Pittsburgh
US/Eastern timezone

Adding NNLO and SMEFT corrections to GRIFFIN

7 Nov 2026, 11:08
12m
University of Pittsburgh

University of Pittsburgh

Speaker

Ernest Wallace (University of Pittsburgh)

Description

We implement the next-to-next-to-leading-order electroweak fermionic corrections in GRIFFIN, a C++ library for calculating fermion scattering and decay processes. In addition, we implement the corrections to these processes from tree-level SM-SMEFT interference. When first published, GRIFFIN contained full Standard Model electroweak NNLO corrections on the Z-resonance and NLO corrections off-resonance, but had modular structure that allowed for further corrections to be added. Drawing on recent work on these corrections, we add additional classes and methods to the library.

Authors

Ayres Freitas Ernest Wallace (University of Pittsburgh)

Presentation materials