Menéndez Sánchez, JavierCarrera Moreno, Manuel2021-10-212021-10-212021-07https://hdl.handle.net/2445/180722Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2021, Tutor: Javier Menéndezβ decay is the process most nuclei go through in order to become more stable. The goal of this work is to obtain a more precise theoretical prediction of the half live of the 23Ne to 23Na β decay. After calculating the wavefunctions corresponding to 23Ne and 23Na using the shell model code Nathan, I evaluate the nuclear matrix element of a subleading β decay operator for the first time. This correction reduces the half lives of the decay branches studied up to 3%5 p.application/pdfengcc-by-nc-nd (c) Carrera, 2021http://creativecommons.org/licenses/by-nc-nd/3.0/es/Desintegració betaFísica nuclearTreballs de fi de grauBeta decayNuclear physicsBachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess