Recent Results from KamLAND
The Kamioka Liquid-scintillator Anti-Neutrino Detector (KamLAND)
has detected for the first time the disappearance of electron
antineutrinos from a terrestrial source at the 99.95%
C.L. Interpreted in terms of neutrino oscillations, the best fit
to the KamLAND data is in excellent agreement with the Large
Mixing Angle (LMA) solution to the solar neutrino
problem. Assuming CPT invariance, this result excludes other
solutions to the solar neutrino problem at > 99.95% C.L. The
absence of events with energies between 8 and 15 MeV constrains
any electron antineutrino fluxes in this range. In particular, the
solar antinuetrino flux is limited to < 2.8 x 10^-4 times the
solar B8 neutrino flux at 90% C.L, a factor of 30 improvement over
previous limits.
hep group
Last modified: Fri Dec 12 12:12:55 EST 2003