In this work, we show a study of the generation of neutrino masses is carried out from the seesaw type II Mechanism for Dirac neutrinos. These mechanisms not only explain the mass of the neutrino but also its small value compared to charged quarks and leptons. Therefore, a model is proposed to obtain the small neutrino masses by extending the visible content of the Standard Model (SM) with $S$...
The Lie algebra of the Poincare group is constructed to extend it to graded Lie algebras by adding fermionic generators. Minimal irreducible representations of these algebras and their respective superfields will be studied to construct invariant Lagrangian densities under graded algebras.
We present a detailed study of a proposed model to explain the experimental hints of new physics in B meson decays within the frameork of the Pati-Salam unification. The model is based on the local gauge group SU(4)L⊗SU(4)R⊗SU(2)L⊗U(1)′ and part of its gauge bosons are (3,1)2/3 vector leptoquarks. The key feature of the model is that SU(4)R is broken at a high energy scale, which suppresses...
We present the first observation of the $B^{+}$ meson production suppression in high-multiplicity respect to low multiplicity pPb collisions at $\sqrt{s_{NN}} = 8.16$ TeV with data collected by the CMS detector during 2016 and corresponding to an integrated luminosity of 175 nb$^{-1}$. The measurement uses exclusive decay channel $B^{+}\rightarrow J/\psi \ K^{+}$. The inclusive results show a...
The Schwinger-Dyson equations (DSE) were obtained from a functional generation of masses M(p) for a fermion propagator, which are analogous to the Euler-Lagrange equations in quantum field theory (QFT), because these correspond to the equations of motion of Green's functions. The DSE's solve them by means of a truncation scheme. In order to solve abelian models for quantum chromodynamics (QCD)...
In recent years, the observations reported by LHCb, Babar, and Belle experiments of the apparent anomalies in B-meson decays, together with the possible anomaly on the magnetic angular momentum of muons reported by the Muon $g-2$ experiment at Fermilab, indicate that, perhaps, lepton flavour universality is violated in the SM, in turn being a window to search new physics.
Of the new models...
The $R_{D^{(\ast)}}$ anomaly is one of the most intriguing experimental results in particle physics. Experiments as BaBar, Belle and LHCb have measured a consistent tension with the standard model. In this work we study a consequence of different solutions to this tension as a sequential $\mathrm{W}'$ boson, EFT and leptoquark. Such models, are not only able to explain the $R_{D^{(\ast)}}$...
Measurements of the cosmological parameter $S_8$ provided by cosmic microwave background and large scale structure data reveal some tension between them, suggesting that the clustering features of matter in these early and late cosmological tracers could be different. In this work, we use a supervised learning method designed to solve Bayesian approach to regression, known as Gaussian...
We work on three specific production models. The first and the most recognized is the Weakly Interacting Massive Particles or WIMP model, which we will work on by applying the Boltzmann equations to study the behavior of WIMP relics in the thermal bath during the first moments of the universe. This analysis is done by finding an approximate solution analytically and numerically using Python...
The triplet vector boson (TVB) is a simplified new physics model involving massive vector bosons transforming as a weak triplet vector, which it has been proposed as a combined explanation to the anomalous b→sμ+μ− and b→cτν¯τ data (the so-called B meson anomalies). In this work, we carry out an updated view of the TVB model, including the Belle II perspectives. We perform a global fit to...
El objetivo principal es exponer los límites de la mecánica cuántica con ayuda de la desigualdad de Leggett-Garg, utilizando el fenómeno de oscilación de neutrinos como mediador entre los dos, el cual se fundamenta en el cambio de estado de sabor, fenómeno que corresponde a una superposición coherente de los estados de masa. La meta es estudiar la violación de la desigualdad de Leggett-Garg...
In the standard cosmological scenario, it is proposed a Universe dominated by radiation just after the inflationary phase and prior to Big Bang Nucleosynthesis (BBN) but actually, there is not much observational information supporting this hypothesis. This research project is intended to take advantage of this gap in our knowledge of cosmic history to modify the post-inflationary period and...
En este trabajo, se estudia la expansión acelerada tardía del universo en un modelo de gravitación modificada tipo f (R, G) con acoplamiento de un campo escalar a la invariante de Gauss-Bonnet. En este sentido se consideran algunas propuestas para f(R) del tipo exponencial en el escalar de curvatura R. En primera instancia se obtienen las ecuaciones generales de movimiento asociadas al modelo...
Columnar analysis is a paradigm that describes the way the user writes the analysis application that is best described in contrast to the the traditional paradigm in high-energy particle physics (HEP) of using an event loop. Coffea is a prototype package for pulling together all the typical needs of a high-energy collider physics (HEP) analysis. In this talk I will provide an introduction to...
Dentro de la innovación del sector agrícola se presenta la agricultura de precisión, cuyo principio básico es aplicar los insumos agrarios en los lugares y momentos adecuados. El nitrógeno es uno de los elementos fundamentales para los procesos metabólicos de las plantas y es un recurso limitado en el suelo de cultivo; es aquí donde radica la importancia de captar su concentración en el suelo....
We report measurements of muon flux over the sky of the city of Bogotá at 4${^\circ}$ 35' 56'' north latitude, 74${^\circ}$ 04' 51'' west longitude, and an altitude of 2657 meters above sea level, carried out with a hodoscope composed of 4 stations of plastic scintillators located equidistant over a distance of 4.8 meters. Measurements were taken at different zenith ($\theta$) angles within...
The 331 models are of great interest from the theoretical and experimental point of view, since they allow explaining, among other things, the reason why there must be three families of fermions in nature and, on the other hand, they have experimental parameters that can be bounded in particle accelerators like the LHC. In general, these models are not universal and therefore have neutral...
