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Evaluation of subleading β decay matrix elements in light nuclei

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Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2021, Tutor: Javier Menéndez

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β 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%

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Evaluation of subleading β decay matrix elements in light nuclei