Nuclear structure to unveil the nature of neutrinos and dark matter

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In FY2019 we have accomplished the following main achievements:* Publication of the first shell model prediction of the two-neutrino double electron capture nuclear matrix element of xenon-124.* First principles calculation of the nuclear structure of nickel-78. A comparison with the results measured at RIBF RIKEN is published in the top journal Nature. This calculation is a first step towards first principles studies of the double-beta decay of germanium-76.* First principles calculation of the nuclear structure of titanium-62. A comparison with the results measured at RIBF RIKEN is accepted for publication in Phys. Lett. B. This calculation is a first step towards first principles studies of the double-beta decay of calcium-48.