Upper limit on the electron antineutrino mass from the Troitsk experiment

V. N. Aseev, A. I. Belesev, A. I. Berlev, E. V. Geraskin, A. A. Golubev, N. A. Likhovid, V. M. Lobashev, A. A. Nozik, V. S. Pantuev, V. I. Parfenov, A. K. Skasyrskaya, F. V. Tkachov, and S. V. Zadorozhny
Phys. Rev. D 84, 112003 – Published 8 December 2011

Abstract

An electron antineutrino mass has been measured in tritium β decay in the Troitsk ν-mass experiment. The setup consists of a windowless gaseous tritium source and an electrostatic electron spectrometer. The whole data set acquired from 1994 to 2004 was reanalyzed. A thorough selection of data with the reliable experimental conditions has been performed. We checked every known systematic effect and obtained the following experimental estimate for neutrino mass squared mν2=0.67±2.53eV2. This gives an experimental upper sensitivity limit of mν<2.2eV, 95% C.L. and upper limit estimates mν<2.12eV, 95% C.L. for Bayesian statistics and mν<2.05eV, 95% C.L. for the Feldman and Cousins approach.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 29 August 2011

DOI:https://doi.org/10.1103/PhysRevD.84.112003

© 2011 American Physical Society

Authors & Affiliations

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 84, Iss. 11 — 1 December 2011

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×