Nuclear ab initio calculations of 6He $\beta$-decay for beyond the Standard Model studies
| Autor: | Glick-Magid, Ayala, Forssén, Christian, Gazda, Daniel, Gazit, Doron, Gysbers, Peter, Navrátil, Petr |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Phys.Lett.B 832 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.physletb.2022.137259 |
| Popis: | Precision measurements of $\beta$-decay observables offer the possibility to search for deviations from the Standard Model. A possible discovery of such deviations requires accompanying first-principles calculations. Here we compute the nuclear structure corrections for the $\beta$-decay of $^6$He which is of central interest in several experimental efforts. We employ the impulse approximation together with wave functions calculated using the ab initio no-core shell model with potentials based on chiral effective field theory. We use these state-of-the-art calculations to give a novel and comprehensive analysis of theoretical uncertainties. We find that nuclear corrections, which we compute within the sensitivity of future experiments, create significant deviation from the naive Gamow-Teller predictions, making their accurate assessment essential in searches for physics beyond the Standard Model. Comment: Published version |
| Databáze: | arXiv |
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