We analyzed low-background data from the CRESST-II experiment with a total net exposure of 730 kg days to extract limits on double electron capture processes. We established new limits for 40Ca with ${T}_{1/2}^{2\nu 2{\rm{K}}}\gt 9.9\times {10}^{21}$ y and ${T}_{1/2}^{0\nu 2\mathrm{EC}}\gt 1.4\times {10}^{22}$ y and for 180W with ${T}_{1/2}^{2\nu 2{\rm{K}}}\gt 3.1\times {10}^{19}$ y and ${T}_{1/2}^{0\nu 2\mathrm{EC}}\gt 9.4\times {10}^{18}$ y at 90% CL. Depending on the process, these values improve the currently best limits by a factor of $\sim 1.4\mbox{--}30$.
New limits on double electron capture of 40^Ca and180^W
Pagliarone, C
;
2016-01-01
Abstract
We analyzed low-background data from the CRESST-II experiment with a total net exposure of 730 kg days to extract limits on double electron capture processes. We established new limits for 40Ca with ${T}_{1/2}^{2\nu 2{\rm{K}}}\gt 9.9\times {10}^{21}$ y and ${T}_{1/2}^{0\nu 2\mathrm{EC}}\gt 1.4\times {10}^{22}$ y and for 180W with ${T}_{1/2}^{2\nu 2{\rm{K}}}\gt 3.1\times {10}^{19}$ y and ${T}_{1/2}^{0\nu 2\mathrm{EC}}\gt 9.4\times {10}^{18}$ y at 90% CL. Depending on the process, these values improve the currently best limits by a factor of $\sim 1.4\mbox{--}30$.File in questo prodotto:
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