12–14 May 2022
University of Pittsburgh
US/Eastern timezone

Multi-scale Feynman integrals contributing to mixed QCD EW corrections to H-> Z Z*

14 May 2022, 11:50
15m
Benedum Hall 157 (University of Pittsburgh)

Benedum Hall 157

University of Pittsburgh

Speakers

Ekta Chaubey Ina Hoenemann ekta chaubey (Institute of Physics, JGU, Mainz)

Description

I present new analytic results for Feynman integrals that contribute to mixed QCD-EW corrections to partial decay width for 𝐻→𝑍𝑍*. These corrections include the massive top-quark contributions. The analytic computation of these integrals is challenging due to the presence of many massive scales. These two-loop integrals are solved using the method of differential equations by bringing them to a canonical form, keeping full dependence on masses of the internal propagators.
I explain the construction of a dlog-form for the differential equation, which is obtained despite the presence of (non-) rationalizable square roots.

Authors

Ekta Chaubey Ina Hoenemann

Presentation materials