Publikationsdatum:
2019-09-01
Beschreibung:
We report on a search for double beta decay of $$^{130}hbox {Te}$$130Te to the first $$0^{+}$$0+ excited state of $$^{130}hbox {Xe}$$130Xe using a $$9.8,hbox {kg}cdot hbox {yr}$$9.8kg·yr exposure of $$^{130}hbox {Te}$$130Te collected with the CUORE-0 experiment. In this work we exploit different topologies of coincident events to search for both the neutrinoless and two-neutrino double beta decay modes. We find no evidence for either mode and place lower bounds on the half-lives: $$T^{0
u }_{0^+_1}〉7.9cdot 10^{23}hbox {yr}$$T01+0ν〉7.9·1023yr and $$T^{2
u }_{0^+_1}〉2.4cdot 10^{23}hbox {yr}$$T01+2ν〉2.4·1023yr ($$90\%,hbox {CL}$$90%CL). Combining our results with those obtained by the CUORICINO experiment, we achieve the most stringent constraints available for these processes: $$T^{0
u }_{0^+_1}〉1.4cdot 10^{24}hbox {yr}$$T01+0ν〉1.4·1024yr and $$T^{2
u }_{0^+_1}〉2.5cdot 10^{23}hbox {yr}$$T01+2ν〉2.5·1023yr ($$90\%,hbox {CL}$$90%CL).
Print ISSN:
1434-6044
Digitale ISSN:
1434-6052
Thema:
Physik
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