Graham van Goffrier - The future of nuclear matrix elements for 0νββ decay

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• Graham van Goffrier (UCL)
• Friday 11 November 2022, 16:00-17:00
• Potter Room (B1.19).

If you have a question about this talk, please contact Maeve Madigan.

The seminar takes place in person in the Potter Room at DAMPT and a broadcast is available via zoom: https://us02web.zoom.us/j/85896693592?pwd=cDBJMVJJNlkwcG9FWFBJNTJmTTJyQT09

Abstract: Neutrinoless double beta (0νββ) decay is the most sensitive known probe of Majorana neutrino mass, which naturally emerges in LNV new physics scenarios and is tied to leptogenesis. In parallel to experimental searches, major computational efforts are ongoing to reduce many-body estimation biases on 0νββ nuclear matrix elements (NMEs). Recent developments in chiral EFT -based nuclear amplitudes have identified an exemplar systematic correction to established NME calculations. Motivated by such prospects for improved theoretical biases, we perform a Bayesian analysis of planned multi-isotope measurements and their constraints on both standard and exotic 0νββ mechanisms. We further discuss directions for improving the accuracy of systematic EFT corrections.

This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.

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