Nafisa Nawrin Labonno / Physics / Faculty Mentor: Benjamin Jones
Neutrinoless double beta decay (0νββ) is a rare nuclear phenomenon hypothesised to involve the conversion of two neutrons into two protons, emitting two electrons without any accompanying neutrinos. This process, distinct from the standard double beta decay (ββ) where neutrinos are emitted, holds significant implications for our comprehension of neutrinos, particularly regarding their mass and potential nature as their own antiparticles. Next-generation exploration of 0νββ, exemplified by the Neutrino Experiment with a Xenon TPC (NEXT), utilises advanced techniques such as high-pressure xenon gas time projection chambers (TPCs) to precisely detect and analyse particle properties. Leveraging its ability to reconstruct particle tracks’ topology with precision, NEXT exploits theoretical frameworks like Effective Field Theory (EFT) to enhance sensitivity and probe subtle deviations in decay processes. Additionally, the NuDoBe experiment complements NEXT, facilitating independent measurements and cross-validation. This international collaborative research aims to deepen our understanding of neutrinos and illuminate the mysteries surrounding neutrinoless double beta decay. This paper introduces νDoBe, a Python tool for automated computation of neutrinoless double beta decay (0νββ) rates within the Standard Model Effective Field Theory (SMEFT), facilitating analysis of decay rates, electron spectra, and angular correlations across different isotopes and lepton-number-violating operators up to dimension 9, with handling of renormalisation-group running and matching to low-energy effective field theories.
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