Speaker
Description
The Large Hadron Collider (LHC) is collecting an incredible amount of data, allowing for precise comparisons between theory predictions and experimental measurements in order to further test the Standard Model and possible New Physics scenarios.
Theoretical computations involving heavy resonances mostly focused on fully-leptonic decays, mainly due to the huge simplifications arising when computing higher order QCD corrections and the cleaner experimental signature.
However, final states involving hadronic decays provide complementary features to the fully-leptonic counterpart, making precise predictions for such processes desirable.
This talk will discuss the generalization of the MATRIX framework to include, for the first time, such decays in a factorized approach, with an implementation as process independent as possible. The first application of such an extension will be Higgs-pair production, one of the most promising processes for studies at the High-Lumi LHC and future colliders, being directly sensitive to the Higgs trilinear self-coupling, a fundamental ingredient of the Higgs potential.
Starting from the state of the art for on-shell HH production, with a focus on predictions obtained with MATRIX, the talk will then move to discussing the inclusion of decays in the narrow-width approximation. First, preliminary results are presented for the 2b2ɣ final state.