13-16 September 2023
University of Warsaw, Faculty of Physics
Europe/Warsaw timezone
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Parallel Session 4

Place

Location: University of Warsaw, Faculty of Physics
Address: Pasteura 5 Street, 02-093 Warsaw, Poland
Date: 15 Sep 16:00 - 17:15

Conveners

    • Rebelo, Margarida (Gui) N. (CFTP/IST, U. Lisboa, Portugal)

Timetable | Contribution List

Displaying 5 contributions out of 5
I discuss the two-Higgs doublet model extended by a complex singlet and an additional U(1) gauge group (N2HDM-U(1)) and compare it to the standard two-Higgs doublet model with Z2 symmetries (N2HDM-Z2). We show that the N2HDM-U(1) is more predictive as it has one less free parameter, is CP conserving, and involves only spontaneous symmetry breaking. We then examine the phenomenological consequences ... More
Presented by Sumit BANIK on 15/09/2023 at 14:45
In extended Higgs models, the nearly-alignment scenario is phenomenologically interesting and consistent with the current LHC data. In the nearly-alignment case, it is known that a wide parameter region is expected to be surveyed by "Higgs to Higgs decays" in direct searches of the additional Higgs bosons. We comprehensively investigate the impact of NLO electroweak and NNLO QCD corrections to bra ... More
Presented by Dr. Mariko KIKUCHI on 15/09/2023 at 15:00
Multi-Higgs-doublet models equipped with global symmetry groups, either exact or softly bro- ken, offer a rich framework for constructions beyond the Standard Model and lead to remarkable phenomenological consequences. Knowing all the symmetry options within each class of models can guide its phenomenological exploration, as confirmed by the vast literature on the two- and three-Higgs-doublet mode ... More
Presented by Mr. Jiazhen SHAO on 15/09/2023 at 14:15
Machine learning techniques are used to predict unitarity and bounded from below (BFB) constraints in multi-scalar models. This approach has been shown to be effective when applied to two and three Higgs doublet models and the left-right model. By using appropriate neural network architectures, learning algorithms, and well-prepared training datasets, a high level of predictivity is achieved. Mach ... More
Presented by Dr. Darius JURCIUKONIS on 15/09/2023 at 14:30
The Weinberg 3HDM potential may lead to spontaneous CP violation. The terms thus inducing CP violation are constrained by the measured properties of the discovered scalar at 125 GeV. In a wide range of parameter space, the potential leads to one or two light neutral states (below 125 GeV) that have a considerable admixture of CP-odd fields. The potential can accommodate a light state at 95 GeV, as ... More
Presented by Prof. Per OSLAND on 15/09/2023 at 14:00
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