New limits on double electron capture of 40Ca and 180W. (18th August 2016)

• Record Type: Journal Article
• Authors: 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; Türkoǧlu, C; Uffinger, M; Ulrich, A; Usherov, I; Wawoczny, S; Willers, M; Wüstrich, M; Zöller, A;
• Is Part Of: Journal of physics. Volume 43:Number 9(2016:Sep.)
• Publication Date: 2016-08-18
• Subjects: double electron capture -- calcium tungstate -- scintillating bolometer -- Ca-40 -- W-180; Nuclear physics -- Periodicals; Particles (Nuclear physics) -- Periodicals; Physique nucléaire -- Périodiques; Particules (Physique nucléaire) -- Périodiques; Kernfysica; Elementaire deeltjes; 539.7
• DOI: 10.1088/0954-3899/43/9/095202
• Languages: English
• ISSNs: 0954-3899

Abstract

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 2 ν 2 K > 9.9 × 10 21 y and T 1 / 2 0 ν 2 EC > 1.4 × 10 22 y and for 180 W with T 1 / 2 2 ν 2 K > 3.1 × 10 19 y and T 1 / 2 0 ν 2 EC > 9.4 × 10 18 y at 90% CL. Depending on the process, these values improve the currently best limits by a factor of ∼ 1.4 – 30 .