Dominant NNLO Corrections to Four-Fermion Production at the WW Threshold

TL;DR

This paper summarizes the calculation of the most significant NNLO corrections to four-fermion production near the W-pair threshold using unstable-particle effective theory, improving theoretical precision.

Contribution

It provides the first evaluation of dominant NNLO corrections in four-fermion production at the WW threshold within an effective theory framework.

Findings

Dominant NNLO corrections significantly impact four-fermion production predictions.

The effective theory approach effectively captures the dominant higher-order effects.

Results enhance the theoretical accuracy for W-pair production near threshold.

Abstract

The recent evaluation of the parametrically dominant next-to-next-to-leading order corrections to four-fermion production near the W-pair threshold in the framework of unstable-particle effective theory is briefly summarized.