1. New Limits on Double Electron Capture of $^{40}$Ca and $^{180}$W
- Author
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Angloher, G., Bauer, M., Bauer, P., Bavykina, I., Bento, A., Bucci, C., Canonica, L., Ciemniak, C., Defay, X., Deuter, G., Erb, A., Feilitzsch, F. v., Iachellini, N. Ferreiro, Gorla, P., Gütlein, A., Hauff, D., Huff, P., Isaila, C., Jochum, J., Kiefer, M., Kimmerle, M., Kluck, H., Kraus, H., Lanfranchi, J. -C., Loebell, J., Münster, A, Pagliarone, C., Petricca, F., Pfister, S., Potzel, W., Pröbst, F., Reindl, F., Roth, S., Rottler, K., Sailer, C., Schäffner, K., Schieck, J., Schmaler, J., Scholl, S., Schönert, S., Seidel, W., Sivers, M. v., Stodolsky, L., Strandhagen, C., Strauss, R., Tanzke, A., Tretyak, V., Thi, H. H. Trinh, Türkoğlu, C., Uffinger, M., Ulrich, A., Usherov, I., Wawoczny, S., Willers, M., Wüstrich, M., and Zöller, A.
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Nuclear Experiment ,Physics - Instrumentation and Detectors - 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 $^{40}$Ca with $T_{1/2}^{2v2K}>9.9\times10^{21}$ y and $T_{1/2}^{0v2EC}>1.4\times10^{22}$ y and for $^{180}$W with T$_{1/2}^{2v2K}>3.1\times10^{19}$ y and $T_{1/2}^{0v2EC}>9.4\times10^{18}$ y at 90% CL. Depending on the process, these values improve the currently best limits by a factor of $\sim$1.4-30.
- Published
- 2016
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