9th International Conference on High Energy Particle and Nuclear Physics in the LHC Era

Session

Poster session

7 Jan 2025, 16:20

Building A (Santa Maria University)

508. Constraining the Higgs Potential via Di-Higgs searches with ATLAS at the LHC

Sebastian Julio Fuenzalida Garrido (Federico Santa Maria Technical University (CL))

Poster

The 2012 discovery of the Higgs boson (H) by the ATLAS and CMS collaborations at the Large Hadron Collider (LHC) marked the beginning of an extensive program aimed at understanding the properties of this fundamental particle. A key aspect still under investigation is the Higgs boson self-interaction, which governs the shape of the Higgs potential, $ V(\phi) $. In the Standard Model (SM),...

496. Cosmic Ray Simulations for CONDOR Observatory and Angular Reconstruction via Machine Learning

Luis Navarro (Universidad Técnica Federico Santa María)

Poster

The COmpact Network of Detectors with Orbital Range (CONDOR) Observatory is an upcoming cosmic ray detection facility set to be constructed at an altitude of ~5000 meters a.s.l. in the Atacama Desert, making it the highest cosmic rays detector in the world, designed to observe gamma and cosmic rays at the low-energy range (~GeV-Tev). By focusing on this relatively unexplored range, CONDOR is...

477. Electric field fluctiations in a self interacting scalar theory

Melanie Martínez Villarreal (Pontificia Universidad Católica de Chile)

Poster

The aim of this project is to study the effects of a noisy electric field in a complex scalar field $\lambda\phi^4$ theory, in the context of ultrarelativistic heavy ion collisions. The bosonic propagator in presence of a constant electric field is derived using the Schwinger-Fock proper time method. To consider the fluctuations of the electric field the statistical average of the generating...

504. Exclusive Vector Meson Production in Ultraperipheral Proton-Nucleus Collisions

OTAVIO DA SILVA ABRAAO

Poster

We analyze the production of vector mesons ρ and J/Ψ in ultraperipheral proton-nucleus
collisions with center of mass energies √
s = 5, 02 TeV and √
s = 8, 16 TeV. We calculate
the differential cross sections using three phenomenological models that take into account
the effects of parton saturation, and we present predictions for pCa and pP b collisions. We
compare our predictions with...

501. Exploring Ultraviolet Complete Extensions of a Vector Dark Matter Model via the so(4) algebra

Jorge Schifferli Verdugo (Universidad Técnica Federico Santa María)

Poster

In previous works it has been shown that a minimalist model for vector dark matter surfers from loss of unitarity because of the coupling between the vector field and the Higgs boson [1].

Nevertheless, algebraic manipulation of the vector sector by mixing the weak interaction fields with the vector dark matter fields reveals a possible path towards an ultraviolet completion. The resulting...

473. Optimization in Renormalization Scale and the Principle of Maximum Conformality

Daniel Salinas-Arizmendi (Universidad Técnica Federico Santa María)

Poster

Predictions of processes in perturbative Quantum Chromodynamics (pQCD) critically depend on the appropriate choice of the renormalization scale $\mu_r$ to determine the correct running coupling in the perturbative expansion. In conventional scale setting, this scale is set to the characteristic process value, $Q$, and the uncertainty is estimated by varying $\mu_r$ within an arbitrary range...

468. Phenomenological aspects of the fermion and scalar sectors of a S4 flavored 3-3-1 model.

maria mora urrutia (USM)

Poster

We proposed a viable and predictive model based on the SU(3)_C × SU(3)_L × U(1)_X gauge symmetry, supplemented by the global U(1)_Lg symmetry, the S_4 family symmetry and several auxiliary cyclic symmetries, which successfully reproduces the experimentally observed SM fermion mass and mixing pattern. The tiny active neutrino masses are generated through an inverse seesaw mechanism mediated by...

474. Phenomenological Implications of an $S_3$ Symmetric Extended Higgs Doublet Model

Daniel Salinas-Arizmendi (Universidad Técnica Federico Santa María)

Poster

In this work, we propose to explain the mass hierarchy and mixing pattern in the leptonic sector, we explore an extension of the Standard Model whose scalar sector includes one active and two inert doublets as well as some scalar singlets. The model includes a $S_3$ family symmetry supplemented by extra cyclic symmetries. As a consequence of our construction, a Dark Matter (DM) candidate is...

487. Predictive linear seesaw model with $\Delta (27)$ family symmetry.

juan manuel marchant gonzalez (Universidad Técnica Federico Santa María)

Poster

This work aimed to create a model where the smallness of the neutrino masses has been considered. To achieve this, we have chosen to extend the symmetry group of the SM, which is based on the group $SU(3)_C\times SU(2)_L\times U(1)_Y$, by adding an extra symmetry based on the discrete group $\Delta (27)$, due to the success that this group has presented in the literature and because it is the...

509. Simulation of High-Energy Particle Showers for SWGO

Tamara Petrosillo Lago (Universidad Técnica Federico Santa María)

Poster

The reconstruction of atmospheric showers produced by high-energy gamma rays is an essential point in order to determine the effectiveness and optimize the design and layout of the Southern Wide-field Gamma-ray Observatory (SWGO). While SWGO is dedicated to studying gamma rays from astrophysical sources, cosmic rays introduce significant noise into the data, making it essential to accurately...