Majorana neutrino mass constraints in the landscape of nuclear matrix elements
نویسندگان
چکیده
We discuss up-to-date constraints on the Majorana neutrino mass $m_{\beta\beta}$ from neutrinoless double beta decay ($0\nu\beta\beta$) searches in experiments using different isotopes: KamLAND-Zen and EXO ($^{136}$Xe), GERDA MAJORANA ($^{76}$Ge) CUORE ($^{130}$Te). Best fits upper bounds are explored general landscape of nuclear matrix elements (NME), as well for specific NME values obtained representative models. By approximating likelihood $0\nu\beta\beta$ signals through quadratic forms, analysis separate combined isotope data becomes exceedingly simple, allows to clarify various aspects multi-isotope combinations. In particular, we analyze relative impact setting $m_{\beta\beta}$, conditions leading nonzero at best fit, variable NMEs. Detailed results combinations reported graphical numerical form. Implications future analyses calculations briefly discussed.
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ژورنال
عنوان ژورنال: Physical review
سال: 2022
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevd.106.013009