Half-life measurement of 150ND 2β2ν decay in the time projection chamber experiment

Measurement of the2νββdecay half-life ofNd150and a search forArnold1, Augier2, Baker3 et al. 2016Phys. Rev. DSelf Cite

“…Given the 2νββ decay selection efficiency of ε 2e = 3.87% and an exposure of 0.19 kg·yr, the 2νββ decay half-life for 150 Nd is measured to be (4) with a signal-to-background ratio of 3.9. This result is approximately 2.4σ lower than the half-life measured by ITEP [11] and 2.6σ higher than the result obtained by the Irvine group [9]. The half-life presented herein represents the most accurate measurement of the 2νββ decay half-life to date for this isotope due to a more thorough assessment of systematic uncertainties, leading to a relatively small reduction in the systematic uncertainty of ≈ 5.6% compared to Ref.…”

YAG:Nd crystals as possible detector to search for and decay of neodymium

“…As it was mentioned in the Introduction, the most interesting of them is 150 Nd due to the large value of the transition energy. Two neutrino 2β decay of 150 Nd with the half-life T 1/2 = 1.9 +0.7 −0.4 × 10 19 yr was observed in experiment [17] by using a time projection chamber and samples of enriched 150 Nd and natural neodymium. In [18] the double beta decay of 150 Nd was studied with similar technique (only enriched 150 Nd sample was used).…”

Many-body correlations of quasiparticle random-phase approximation in nuclear matrix elements of neutrinolessdouble−βdecay

“…The latter value agrees well with the experimental value of 0.0579 ± 0.0032; this value is obtained from the average of three experimental half-lives [64] (for the experiments, see Refs. [65][66][67]) and the phase-space factor in Ref. [16].…”