Final results from phase II of the Mainz neutrino mass searchin tritium ${\beta}$ decay

By C. Kraus, B. Bornschein, L. Bornschein, J. Bonn, B. Flatt, A. Kovalík, B. Ostrick, E. Otten, J. Schall, T. Thümmler and 1 more. 2004

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Abstract.This paper reports on the improved Mainz experiment on tritium $\beta$ spectroscopy which yields a 10 times higher signal to background ratio than before. The main experimental effects and systematic uncertainties have been investigated in side experiments, and possible error sources have been eliminated. Extensive data taking took place in the years 1997 to 2001. A residual analysis of the data sets yields for the square of the electron antineutrino mass the final result of $m^2(\nu_e) = (-0.6 \pm 2.2_{\mathrm{{stat}}} \pm 2.1_{\mathrm{{syst}}})$ eV2/c4. We derive an upper limit of $m(\nu_e)\leq 2.3$ eV/c2 at 95% confidence level for the mass itself.

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Citations in the corpus

2020 global reassessment of the neutrino oscillation picture (2020, methodology): “[87] C.”
Neutrino Mass in Cosmology: Status and Prospects (2011, background): “lanck, neutrinos decouple from the cosmic plasma. By demanding ˘H, we see that neutrinos decouple at T˘1 MeV. Laboratory experiments indicate that the absolute neutrino mass should not exceed O(1) eV [3,4]. Thus, at decoupling, the neutrinos are relativistic, and their phase space density is well-ap”
Neutrino electromagnetic interactions: A window to new physics (2014, background): “(2.79) The most stringent 95% CL limits obtained in the Mainz (Kraus et al., 2005) and Troitsk (Aseev et al., 2011) experiments, mβ ≤ 2.3 eV (Mainz), (2.80) mβ ≤ 2.1 eV (Troitsk), (2.81) are shown in Fig.”