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Radiative tritium beta-decay and the neutrino mass

Authors
  • Gardner, S.
  • Bernard, V.
  • Meissner, U.G.
Publication Date
Jan 01, 2004
Source
Juelich Shared Electronic Resources (JuSER)
Keywords
Language
English
License
Green
External links

Abstract

The shape of the electron energy spectrum in H-3 beta-decay permits a direct assay of the absolute scale of the neutrino mass; a highly accurate theoretical description of the electron energy spectrum is necessary to the empirical task. We update Sirlin's calculation of the outer radiative correction to nuclear beta-decay to take into account the non-zero energy resolution of the electron detector. In previous H-3 beta-decay studies the outer radiative corrections were neglected all together; only Coulomb corrections to the spectrum were included. This neglect artificially pushes m(nu)(2) < 0 in a potentially significant way. We present a computation of the theoretical spectrum appropriate to the extraction of the neutrino mass in the sub-eV regime. (C) 2004 Published by Elsevier B.V.

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