Charm physics with a Lattice QCD mixed action

• Autores: Javier Ugarrio Muñoz
• Directores de la Tesis: Carlos Roberto Pena Ruano (dir. tes.)
• Lectura: En la Universidad Autónoma de Madrid ( España ) en 2022
• Idioma: inglés
• Número de páginas: 88
• Títulos paralelos:
  • Física del charm con una acción mixta de QCD en la red
• Tribunal Calificador de la Tesis: Sara Collins (presid.), Margarita García Perez (secret.), Alberto Ramos Martínez (voc.)
• Programa de doctorado: Programa de Doctorado en Física Teórica por la Universidad Autónoma de Madrid
• Materias:
  • Física
    • Física teórica
• Enlaces
  • Tesis en acceso abierto en: Biblos-e Archivo
• Resumen

  • In this thesis we study a mixed-action Lattice QCD setup, which combines Nf = 2 + 1 O(a)-improved Wilson fermions and Nf = 2 + 1 + 1 Wilson twisted mass (Wtm) fermions at maximal twist in the valence. We take advantage of automatic O(a) improvement in the valence sector to extract charm physics results without improvement coefficients.

    Our results include the determination of the charm quark mass, as well as of the decay constants of the D and Ds mesons, relevant for electroweak leptonic decays. Quarkonium states are also studied. We carry out an analysis that focuses on controlling the statistical and systematic errors. Systematic effects are considered in the framework of Bayesian statistics. Different model parameterizations are taken into consideration to perform a model average. Our final results are among the most precise in the literature for computations employing Wilson-like fermions and will contribute significantly to the current world averages