New Results for Double-Beta Decay of Mo-100 to Excited Final States of Ru-100 Using the TUNL-ITEP Apparatus

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dc.creatorKidd, M. F.
dc.creatorEsterline, J. H.
dc.creatorTornow, W.
dc.creatorBarabash, A. S.
dc.creatorUmatov, V. I.
dc.date2009-02-25
dc.date.accessioned2026-07-07T13:01:09Z
dc.date.available2026-07-07T13:01:09Z
dc.descriptionThe coincidence detection efficiency of the TUNL--ITEP apparatus designed for measuring half-life times of two-neutrino double-beta decay transitions to excited final states in daughter nuclei has been measured with a factor of 2.4 improved accuracy. In addition, the previous measuring time of 455 days for the study of the Mo-100 two-neutrino double-beta decay to the first excited 0+ state in Ru-100 has been increased by 450 days, and a new result (combined with the previous measurement obtained with the same apparatus) for this transition is presented: T_(1/2) = [5.5 (+1.2/-0.8) (stat) +/- 0.3 (syst)] x 10^20 y. Measured two-neutrino double-beta decay half-life times to excited states can be used to test the reliability of nuclear matrix element calculations needed for determining the effective neutrino mass from zero-neutrino double-beta decay data. We also present new limits for transitions to higher excited states in Ru-100 which, if improved, may be of interest for more exotic conjectures, like a bosonic component to neutrino statistics.
dc.identifierhttps://arxiv.org/abs/0902.4418
dc.identifierhttp://arxiv.org/abs/0902.4418
dc.identifierNucl.Phys.A821:251-261,2009
dc.identifierdoi:10.1016/j.nuclphysa.2009.01.082
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/226066
dc.subjectNuclear Experiment
dc.titleNew Results for Double-Beta Decay of Mo-100 to Excited Final States of Ru-100 Using the TUNL-ITEP Apparatus
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