Tesis MCMF
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Thesis Neutrino portal for vector dark matter(Universidad Técnica Federico Santa María, 2025-01) Solar Peñailillo, Pablo Nicolás; Neill.Nicolás; Departamento de Física; Zerwekh Arroyo, Alfonso RaulIn the Fermion Portal Vector Dark Matter (FPVDM) framework, we study how to connect the standard model with dark matter through neutrinos. In this framework the standard model is expanded with a SU(2)D × U(1)g Y D dark sector, where the SU(2)D gauge bosons are the dark matter candidates (specifically the V } components), this symmetry is broken by a dark scalar ΦD, giving mass to the gauge bosons and leaving a remanent Z2 symmetry that ensures the stability of the candidate. The interaction with the standard model is done through VL-fermions that couple to neutrinos through a Yukawa-like term. We consider two models, with one and two families of VL-fermions, for which we analyze the phenomenology using restrictions, relic density, and direct and indirect detection of dark matter.Item Síntesis y caracterización de aislantes topológicos nano estructurados(2023-04) Gallardo Mödinger, Valentina Maritza; Departamento de Física; Parra González, CarolinaThesis MOTOR DE OTTO EN EL MODELO CLOCK DE q-ESTADOS(2022-01) Aguilera Pulgar, Michel Angelo; Departamento de Física.Thesis Interaction of liquids with nanostrucured surfaces(2022-06) Cortés Garcés, Diego; Del Campo Sfier, Valeria Isabel; Kappl, Michael; Departamento de Física; Corrales Iturriaga, Tomas PatricioThe study and characterization of wetting properties is a crucial first step in achieving a fundamental understanding and specific development of superhydrophobic and superamphiphobic surfaces. In this context, static and dynamic contact angle measurements are the main techniques widely used to characterize wetting behavior of surfaces. However, these macroscopic techniques leave a lack of knowledge of what is happening at the surface itself at the submicroscopic level. Here, repellent surfaces (superhydrophobic and superamphiphobic) have been prepared and their adhesion force with micron-sized droplets have been measured using Atomic Force Microscopy (AFM). In this way, AFM has allowed us to measure forces of nN of resolution, thereby making it possible to determine the adherence of micro-sized drops with the surface. We achieved this by attaching a liquid drop to the end of a tip-less cantilever (droplet probe) and performed force spectroscopy. For this we have used ionic liquids and water-glycerol mixtures to obtain droplets with microscopic radius and little loss of mass due to evaporation. Moreover, Confocal microscopy has been combined with AFM to visualize the droplet behaviour during the force measurement, this powerful tool allows us to observe the drop deformation, the contact angle and the pinning area of the drop. Also, we can determine if there is some remnant of the droplet left on the surface, due to the quality of the repellent surfaceThesis Acceptance Study of the CLAS12 Detector Using the Forward Micromegas Tracker for Run Group E(2023-09-14) Benkel Balbontin, Bruno; De Vita, Raffaella; Brooks, William; Departamento de Física; Hakobyan, HaykLos aceleradores y detectores de partículas son la principal fuente de datos para la Física de Altas Energías. En este contexto, estos suelen ser máquinas masivas con un gran número de partes móviles, la mayoría de las cuales requieren un trabajo de calibración y mantenimiento para funcionar en condiciones óptimas. Hay que tener especial cuidado en el software dedicado a esta calibración, además del dedicado a la reconstrucción de eventos. Esta tesis presenta un trabajo en calibración de este tipo, realizado al detector más nuevo de la cadena de reconstrucción de CLAS12 — el Micromegas Vertex Tracker. Los resultados obtenidos son favorables. La calibración resultó exitosa, duplicando la resolución de vértice y proporcionando criterios más duros para la selección de tracks de partículas útiles. Además, la tesis profundiza en las mejoras en reconstrucción que aporta este nuevo detector, centrándose en su acceptance, la resolución de vértices y las variables de SIDIS. Se presenta un estudio completo de acceptance total de CLAS12, y se miden las multiplicidades de varios tipos de partículas.Thesis Supercontuctivity in Tilted Dirac Materials(2024-01) Reiser Ramírez, Pablo Carlo Ignacio; Departamento de Física; Juri?I?, Vladimir.
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