Conveners
WG4 parallel session: WG4 parallel session
- Fabio Monti (CERN)
WG4 parallel session
- Fabio Monti (CERN)
ggxy is a C++ library which currently includes gg $\to$ HH up to NLO in QCD. It is able to produce differential distributions in about 30 minutes on a laptop, both for on-shell and MSbar top quark masses and including a 7-point scale variation. ggxy has been linked to Powheg and Herwig to enable the matching to parton showers. Runtime tests have shown that it is a faster a by a factor of 4-5...
After the discovery of the Higgs boson in 2012, the measurements of the Higgs self coupling is still a challenge for current and future experiments in particle physics.
Higgs-boson pair production via gluon fusion is a loop-induced process. In order to increase the accuracy of the theoretical predictions for this process, higher-order corrections are necessary to reduce theoretical...
We present a fully analytic computation of the two-loop electroweak corrections to double Higgs production in gluon fusion, mediated by light quarks. The calculation is performed using the method of differential equations, employing a large mass expansion to generate boundary functions. We implement the results in the POWHEG BOX framework for phenomenological studies. The corrections to the...
Di-Higgs (HH) production provides valuable information about loosely constrained quantities of the Higgs potential, such as the Higgs trilinear self-coupling. The measurement of these properties can confirm SM predictions or point to BSM physics, where non-resonant HH production is typically described by Effective Field Theories (EFTs).
The event-level reweighting consists of parameterizing...
Higgs pair production offers the opportunity to probe correlations among the couplings of one or two Higgs bosons to fermions and gauge bosons. In this context, it serves as a powerful test of the underlying EFT framework. In this talk, we study Higgs pair production via gluon fusion within the Higgs Effective Field Theory (HEFT). We demonstrate that adopting a consistent power counting in...
In supersymmetric theories, the Higgs boson masses are calculated from the input parameters. Moreover, to be compatible with phenomenology, higher-order corrections have to be included in their derivation. Experimental analyses on the other hand resort to benchmarks with specific mass values. Given the large number of input parameters in the proposed supersymmetric extension, such as the...
