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...
It is well-known that perturbative expansions of QFT observable suffer from infrared (IR) divergences both in the phase-space of real-emission contributions and in the loop amplitudes of virtual contributions.
Traditionally, the two are handled separately through a combination of local subtraction counterterm and dimensional regulation.
Local Unitarity is an alternative formulation using the...
