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Search for double beta decay of Zinc and Tungsten with the help of low-background ZnWO4 crystal scintillators

Double beta processes in 64-Zn, 70-Zn, 180-W, and 186-W have been searched for with the help of large volume (0.1-0.7 kg) low background ZnWO4 crystal scintillators at the Gran Sasso National Laboratories of the INFN. Total time of measurements exceeds 10 thousands hours. New improved half-life limits on double electron capture and electron capture with positron emission in 64-Zn have been set, in particular (all the limits are at 90% C.L.): T1/2(0nu2EC)> 1.1e20 yr, T1/2(2nuECbeta+)>7.0e20 yr, and T1/2(0nuECbeta+)>4.3e20 yr. The different modes of double beta processes in 70-Zn, 180-W, and 186-W have been restricted at the level of 1e17-1e20 yr.

preprint2008arXivOpen access
P. BelliR. BernabeiF. CappellaR. CerulliF. A. DanevichB. V. GrinyovA. IncicchittiV. V. KobychevV. M. MokinaS. S. NagornyL. L. NagornayaS. NisiF. NozzoliD. V. PodaD. ProsperiV. I. TretyakS. S. Yurchenko
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Open access17 authors1 topic
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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P. BelliR. BernabeiF. CappellaR. CerulliF. A. DanevichB. V. GrinyovA. IncicchittiV. V. KobychevV. M. MokinaS. S. NagornyL. L. NagornayaS. NisiF. NozzoliD. V. PodaD. ProsperiV. I. TretyakS. S. Yurchenko

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