$2νββ$ Spectrum in Chiral Effective Field Theory

Summary

The study investigates two-neutrino double beta decay (2νββ) in chiral effective field theory, finding contributions from weak magnetism and double-weak pion-exchange at next-to-leading-order. These corrections affect the electron spectra and should be included in analyses aiming to uncover new physics signatures.

Highlights

• The study applies chiral effective field theory to two-neutrino double beta decay.
• Weak magnetism and double-weak pion-exchange contributions are identified at next-to-leading-order.
• These corrections impact the electron spectra in 2νββ decay.
• The inclusion of these corrections is crucial for analyses seeking new physics signatures.
• The study emphasizes the importance of accurate theoretical descriptions for 2νββ decay.
• Chiral effective field theory provides a systematic approach to organizing corrections.
• The corrections found could mimic or obscure signs of beyond-standard-model physics.

Key Insights

• The application of chiral effective field theory to 2νββ decay provides a systematic framework for organizing corrections, allowing for a more accurate understanding of the process and its potential to reveal new physics.
• Weak magnetism and double-weak pion-exchange contributions, identified at next-to-leading-order, are crucial for a precise description of the electron spectra, indicating the importance of considering these corrections in future analyses.
• The corrections identified in this study could either mimic or obscure signs of beyond-standard-model physics, highlighting the need for their inclusion in analyses aiming to uncover new physics signatures in 2νββ decay.
• The study underscores the importance of accurate theoretical descriptions in the search for new physics, as the interpretation of experimental results relies heavily on the precision of theoretical predictions.
• The use of chiral effective field theory in this study demonstrates its utility in nuclear physics, particularly in processes involving multiple nucleons and the weak interaction.
• The findings of this study have implications for the analysis of 2νββ decay experiments, suggesting that the inclusion of weak magnetism and double-weak pion-exchange corrections is necessary for a comprehensive understanding of the process.
• The study contributes to the broader effort to understand the fundamental laws of physics, particularly those governing the weak interaction and the behavior of neutrinos, by refining the theoretical tools used to analyze 2νββ decay.

Mindmap

Citation

Morabit, S. el, Bouabid, R., Cirigliano, V., de Vries, J., Gráf, L., & Mereghetti, E. (2024). $2νββ$ Spectrum in Chiral Effective Field Theory (Version 1). arXiv. https://doi.org/10.48550/ARXIV.2412.14160