ISOLDE Seminar

Testing the Standard Model in nuclear beta-decay

by Nathal Severijns (KU Leuven (BE))

26-1-22 (CERN)




Precise measurements of observables in beta decay allow testing the symmetries of the Standard Model, or searching for new physics at the low-energy frontier. A non-exhaustive overview of this field will be presented based on selected, recent and planned state-of-the-art measurements that use a variety of techniques.

With the precision of these measurements reaching the per mil level small Standard Model effects now have to be included as well. The understanding of these, such as e.g. weak magnetism, requires additional efforts, both from experiment and theory, in order to maintain optimal sensitivity to weak interaction properties. In addition, weak magnetism might also be at the heart of the so-called reactor neutrino anomaly.

Finally, the prospects and future of beta decay weak interaction studies in the era of the Large Hadron Collider will be briefly discussed as well.

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