First search for $2\varepsilon$ and $\varepsilon\beta^+$ decay of $^{174}$Hf

F. A. Danevich; M. Hult; D. V. Kasperovych; G. P. Kovtun; K. V. Kovtun; G. Lutter; G. Marissens; O. G. Polischuk; S. P. Stetsenko; V. I. Tretyak

doi:10.1016/j.nuclphysa.2020.121703

First search for $2\varepsilon$ and $\varepsilon\beta^+$ decay of $^{174}$Hf

Nuclear Experiment 2020-01-28 v1

Authors: F. A. Danevich , M. Hult , D. V. Kasperovych , G. P. Kovtun , K. V. Kovtun , G. Lutter , G. Marissens , O. G. Polischuk , S. P. Stetsenko , V. I. Tretyak

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Abstract

The first ever search for $2\varepsilon$ and $\varepsilon\beta^+$ decay of $^{174}$ Hf was realized using a high-pure sample of hafnium (with mass 179.8 g) and the ultra low-background HPGe-detector system located 225 m underground. After 75 days of data taking no indication of the double beta decay transitions could be detected but lower limits for the half-lives of the different channels and modes of the decays were set on the level of $\lim T_{1/2}\sim 10^{16}-10^{18}$ a.

Keywords

double beta decay hafnium-174 hpge detector half-life limits underground measurement

Cite

@article{arxiv.2001.06301,
  title  = {First search for $2\varepsilon$ and $\varepsilon\beta^+$ decay of $^{174}$Hf},
  author = {F. A. Danevich and M. Hult and D. V. Kasperovych and G. P. Kovtun and K. V. Kovtun and G. Lutter and G. Marissens and O. G. Polischuk and S. P. Stetsenko and V. I. Tretyak},
  journal= {arXiv preprint arXiv:2001.06301},
  year   = {2020}
}

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16 pages, 9 figures, 3 Tables

First search for $2\varepsilon$ and $\varepsilon\beta^+$ decay of $^{174}$Hf

Abstract

Keywords

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