Indications on neutrino oscillations parameters from initial K2K and current SK data

Details Indications on neutrino oscillations parameters from initial K2K and current SK data Indications on neutrino oscillations parameters from initial K2K and current SK data

2001-10-05

arxiv.org/abs/hep-ph/0110089v1

Phys.Rev.D65:073028,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages + 3 figures

Scientific paper

10.1103/PhysRevD.65.073028

We briefly discuss the impact of initial data from the KEK-to-Kamioka (K2K) neutrino experiment on the nu_mu-->nu_tau oscillation parameters (m^2,tan^2 psi) currently indicated by the Super-Kamiokande (SK) atmospheric neutrino experiment. After showing the very good agreement between K2K and SK, we combine the two separate pieces of information. We find that the 99% C.L. range for m^2 allowed by SK only, m^2=[1.3, 5.6]x10^-3 eV^2, is reduced to [1.5, 4.8]x10^-3 eV^2 by including K2K data. By halving the uncertainties of the K2K total rate (with central value unchanged), the m^2 range would be ulteriorly reduced to [1.8, 4.0]x10^-3 eV^2. Such information appears to be already useful in planning (very) long baseline neutrino oscillation experiments.

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