Rui Santos

Reassessing C P violation in the complex 2HDM with machine learning

Anonymous, Karim Elyaouti, Duarte Fontes, M. Sameiro T. Gonçalves et autres

We provide a study of the parameter space of the complex 2-Higgs doublet model (C2HDM), focusing on signs of large C P -violating couplings of the 125 GeV Higgs boson with the fermions. The study is performed utilizing machine learning (ML) techniques …

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Towards a unified framework for pseudo-Nambu-Goldstone Dark Matter and electroweak baryogenesis

Thomas Biekötter, Pedro Gabriel, Milada Muhlleitner, Rui Santos

A bstract We propose the complex singlet-extended 2-Higgs-Doublet Model (cS2HDM), a spin-0 Dark Matter (DM) model with a Higgs sector consisting of two Higgs doublets and a complex singlet, as a benchmark for LHC DM searches. The model predicts a pseudo-Nambu-Goldstone DM …

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Dark matter in multi-singlet extensions of the Standard Model

Anabela Susana de Sousa Gonçalves, Rui Santos

A bstract We study the simplest extensions of the Standard Model (SM) that provide Dark Matter (DM) candidates, built with the addition of real singlets and new $$ {\mathcal{Z}}_2 $$ Z 2 symmetries. In this type of models the interactions between SM …

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Random news from the dark world

Rui Santos

Assuming that Dark Matter (DM) is a particle, we study three scenarios that can be tested at the Large Hadron Collider. The simplest extensions of the Standard Model (SM) with the addition of scalar singlets can provide DM candidates. It is shown …

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RelExt: A New Dark Matter Tool for the Exploration of Dark Matter Models

Rodrigo Capucha, Karim Elyaouti, Margarete Mühlleitner, Johann Plotnikov et autres

We present the C++ program RelExt for Standard Model (SM) extensions that feature a Dark Matter (DM) candidate. The tool allows to efficiently scan the parameter spaces of these models to find parameter combinations that lead to relic density values which are …

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V -associated production and vector boson fusion as an LHC signature of C P violation

Rodrigo Capucha, Álvaro Lozano-Onrubia, Luca Merlo, José Miguel No et autres

We investigate the role of vector boson fusion (VBF) and associated production with an electroweak boson ( V -AP) of beyond-the-Standard-Model Higgs bosons at the LHC in probing C P violation in extended Higgs sectors. Resonant production of a new Higgs boson …

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BSMPT v3 a tool for phase transitions and primordial gravitational waves in extended Higgs sectors

Philipp Basler, Lisa Biermann, Margarete Muehlleitner, J. Müller et autres

V-Associated Production & Vector Boson Fusion as an LHC Signature of CP Violation

Rodrigo Capucha, Álvaro Lozano-Onrubia, Luca Merlo, José Miguel No et autres

We investigate the role of vector boson fusion (VBF) and associated production with an electroweak boson (V-AP) of beyond-the-Standard-Model Higgses at the LHC in probing CP violation in extended Higgs sectors. Resonant production of a new Higgs boson through V-AP/VBF subsequently decaying …

(Some) BSM Theory

Rui Santos

Some of the outstanding issues of the Standard Model (SM) can be solved with an extension of its scalar sector. We discuss SM extensions to tackle matter–antimatter asymmetry, the shape of the Higgs potential, and dark matter. The amount of CP-violation in …

Dark coloured scalars impact on single and di-Higgs production at the LHC

Pedro Gabriel, Margarete Muehlleitner, Daniel Neacsu, Rui Santos

Abstract The search for Dark Matter (DM) at colliders is primarily pursued via the detection of missing energy in particular final states. These searches are based on the production and decay processes where final states include DM particles and at least one …

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Relext: A New Dark Matter Tool for the Exploration of Dark Matter Models

Johann Plotnikov, Rodrigo Capucha, Karim Elyaouti, Rui Santos

HHH whitepaper

Hamza Abouabid, Abdesslam Arhrib, Hannah Arnold, Duarte Azevedo et autres

Abstract We here report on the progress of the HHH Workshop, that took place in Dubrovnik in July 2023. After the discovery of a particle that complies with the properties of the Higgs boson of the Standard Model, all Standard Model (SM) …

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