# Detailed studies of $^{100}$Mo two-neutrino double beta decay in NEMO-3

Abstract : The full data set of the NEMO-3 experiment has been used to measure the half-life of the two-neutrino double beta decay of$^{100}$ Mo to the ground state of$^{100}$ Ru, $T_{1/2} = \left[ 6.81 \pm 0.01\,\left( \text{ stat }\right) ^{+0.38-0.40}\,\left( \text{ syst }\right) \right] \times 10^{18}$  year. The two-electron energy sum, single electron energy spectra and distribution of the angle between the electrons are presented with an unprecedented statistics of $5\times 10^5$ events and a signal-to-background ratio of $\sim$ 80. Clear evidence for the Single State Dominance model is found for this nuclear transition. Limits on Majoron emitting neutrinoless double beta decay modes with spectral indices of $\mathrm{n}=2,3,7$ , as well as constraints on Lorentz invariance violation and on the bosonic neutrino contribution to the two-neutrino double beta decay mode are obtained.
Keywords :
Document type :
Journal articles

https://hal.archives-ouvertes.fr/hal-02097242
Contributor : Inspire Hep <>
Submitted on : Thursday, April 11, 2019 - 8:30:21 PM
Last modification on : Wednesday, October 21, 2020 - 10:29:13 PM

### Citation

R. Arnold, C. Augier, A.S. Barabash, A. Basharina-Freshville, S. Blondel, et al.. Detailed studies of $^{100}$Mo two-neutrino double beta decay in NEMO-3. Eur.Phys.J.C, 2019, 79 (5), pp.440. ⟨10.1140/epjc/s10052-019-6948-4⟩. ⟨hal-02097242⟩

Record views