Inferred 4.4-eV upper limits on the muon and tau-neutrino masses

Aug, 1998
7 pages
Published in:
  • Phys.Lett.B 442 (1998) 255-258
e-Print:
Report number:
  • MADPH-98-1074,
  • VAND-TH-98-13,
  • AMES-HET-98-11

Citations per year

19982002200620102014024681012
Abstract:
By combining experimental constraints from atmospheric and solar neutrino oscillations and the tritium beta decay endpoint, we infer upper limits of 4.4 eV on the νμ\nu_\mu and ντ\nu_\tau masses, if the universe consists of three neutrinos. For hierarchical mass spectra m3m1,m2m_3 \gg m_1, m_2 or m3m2m1m_3 \simeq m_2 \gg m_1 we infer that m_{\nu_\alpha} \lsim 0.08 eV for α=e,μ,τ\alpha = e, \mu, \tau. In a four neutrino universe, and assuming neutrino oscillations also account for the LSND experimental results, m_{\nu_\alpha} \lsim 5.4 eV. We also obtain lower limits on the masses.
Note:
  • 7 pages, Revtex, uses epsf.sty, 1 postscript figure Report-no: MADPH-98-1074
  • neutrino: cosmic radiation
  • neutrino: solar
  • neutrino: oscillation
  • tritium: semileptonic decay
  • electron: energy spectrum
  • neutrino: mass
  • upper limit
  • lower limit
  • neutrino/mu
  • neutrino/tau