Interference Effects in Higgs production through Vector Boson Fusion in the Standard Model and its Singlet Extension

Understand

Interference effects play an important role in Electroweak Physics.

• They are responsible for the restoration of unitarity al large energies.
• When, as is often the case, higher order corrections are only available for some particular subamplitude, interferences need to be carefully computed in order to obtain the best theoretical prediction.
• In the new proposal to estimate the total Higgs width from the off shell cross section, the interference between the Higgs signal and the background is essential.