Implementación y validación del ajuste de recorte y de un selector de trazas confiables para la reconstrucción de vértices primarios del experimente CMS

The objective of the CMS experiment is to find new particles based on proton-proton collisions. In order to find these new particles it is necessary to determine their interaction point. This is realized using vertex reconstruction. This work shows a robust method for reconstructing primary vertices which serves as an alternative to the one used by default in the CMS experiment. The other work done was an optimization of track quality in primary vertex reconstruction.