Published October 1, 2008 | Version v1
Journal article

Limits on νe and νe disappearance from Gallium and reactor experiments

  • 1. Laboratoire d'Annecy-le-Vieux de Physique Thorique LAPTH, Universite de Savoie, CNRS/IN2P3, 74941 Annecy-le-vieux (France)
  • 2. INFN, Sezione di Torino, Via P. Giuria 1, I-10125 Torino (Italy)
  • 3. Dipartimento di Fisica Teorica, Universita di Torino, Via P. Giuria 1, I-10125 Torino (Italy)
  • 4. Dipartimento di Fisica 'G. Galilei', Universita di Padova, and INFN, Sezione di Padova, Via F. Marzolo 8, I-35131 Padova (Italy)

Description

The deficit observed in the Gallium radioactive source experiments is interpreted as a possible indication of the disappearance of electron neutrinos. In the effective framework of two-neutrino mixing we obtain sin22θ > or approx. 0.03 and Δm2 > or approx. 0.1 eV2. The compatibility of this result with the data of the Bugey and Chooz reactor short-baseline antineutrino disappearance experiments is studied. It is found that the Bugey data present a hint of neutrino oscillations with 0.02 < or approx. sin22θ < or approx. 0.08 and Δm2≅1.8 eV2, which is compatible with the Gallium allowed region of the mixing parameters. This hint persists in the combined analyses of Bugey and Chooz data, of Gallium and Bugey data, and of Gallium, Bugey, and Chooz data.

Additional details

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
78
Journal Issue
7
Journal Page Range
p. 073009-073009.10
ISSN
0556-2821
CODEN
PRVDAQ

Optional Information

Notes
(c) 2008 The American Physical Society