Journal
PHYSICAL REVIEW LETTERS
Volume 128, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.202503
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Funding
- U.S. National Science Foundation [PHY-1913728]
- SURA, Czech Science Foundation [22-14497S]
- Czech Ministry of Education, Youth and Sports [CZ.02.1.01/0.0/0.0/16_019/0000765]
- National Energy Research Scientific Computing Center (NERSC)
- U.S. Department of Energy Office of Science User Facility [DE-AC02-05CH11231]
- National Science Foundation [OAC-1818253]
- National Science Foundation Graduate Research Fellowship [DGE-1746045]
- U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
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In this study, we constrained recoil corrections in the beta decay of Li-8 by identifying a strong correlation between them and the Li-8 ground state quadrupole moment through large-scale ab initio calculations. These results are crucial for improving the sensitivity of high-precision experiments that investigate weak interaction theory and test physics beyond the standard model.
We place unprecedented constraints on recoil corrections in the beta decay of Li-8, by identifying a strong correlation between them and the Li-8 ground state quadrupole moment in large-scale ab initio calculations. The results are essential for improving the sensitivity of high-precision experiments that probe the weak interaction theory and test physics beyond the standard model. In addition, our calculations predict a 2(+) state of the a + a system that is energetically accessible to beta decay but has not been observed in the experimental Be-8 energy spectrum, and has an important effect on the recoil corrections and beta decay for the A = 8 systems. This state and an associated 0(+) state are notoriously difficult to model due to their cluster structure and collective correlations, but become feasible for calculations in the ab initio symmetry-adapted no-core shell-model framework.
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