A5088778659- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
Universidad Autónoma de Madrid
2019-2022
Consejo Superior de Investigaciones Científicas
2020-2021
National Research Council
2018
Extensions of the Standard Model that include vector-like quarks commonly also additional particles may mediate new production or decay modes. Using as example minimal linear $\sigma$ model, reduces to $SO(5)/SO(4)$ composite Higgs model in a specific limit, we consider phenomenology when scalar singlet is present. This particle be produced decays $T \to t \sigma$, $B b where $T$ and $B$ are charges $2/3$ $-1/3$, respectively, with subsequent $\sigma W^+ W^-, ZZ, hh$. By scanning over...
In the framework of Standard Model Effective Field Theory, we compare lower bounds on scale new physics possibly contributing to $f\bar{f}h$ effective couplings, obtained from measurements different observables, under assumption that Wilson coefficients relevant dim 6 operators respect certain flavour structure: either Minimal Flavour Violation (MFV) ansatz or a symmetry, often invoked explain observed pattern fermion masses and mixings. We perform global analysis following limits diagonal...
Axion and axion-like particle models are typically affected by a strong fine-tuning problem in conceiving the electroweak Peccei-Quinn breaking scales. Within context of Minimal Linear σ Model, constructions identified where this hierarchy is solved, accounting for TeV scale pseudoscalar with mass larger than 10 MeV. Potential signatures at colliders B-factories discussed.
A bstract The origin of the matter-antimatter asymmetry in Universe is a fundamental question physics. Electroweak baryogenesis compelling scenario for explaining it but requires beyond Standard Model sources CP symmetry violation. simplest possibility violation third generation fermion Higgs couplings, widely investigated theoretically and searched experimentally. It has been found that experimental bounds on quark Yukawa couplings exclude their significant role electroweak baryogenesis,...
Axion and axion-like particle models are typically affected by a strong fine-tuning problem in conceiving the electroweak Peccei-Quinn breaking scales. Within context of Minimal Linear {\sigma} Model, constructions identified where this hierarchy is solved, accounting for TeV scale pseudoscalar with mass larger than 10 MeV. Potential signatures at colliders B-factories discussed.
Abstract The Minimal Linear $$\sigma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>σ</mml:mi> </mml:math> Model is a useful theoretical laboratory. One can investigate in perturbative renormalisable model the properties of Higgs boson as pseudo-Goldstone boson, phenomenological effects radial mode field $$\texttt {s}$$ <mml:mi>s</mml:mi> which spontaneously breaks global SO (5) symmetry and validity conclusions based on Effective Field Theory approach with spectrum,...