MODERN COSMOLOGY

Analysis of the atmospheric data 299

Figure 10.2.Three-flavour analysis in the triangle plot, for five representative values of
m^2. Left-hand and middle column: separate analyses of Super-Kamiokande (52 kTy) and
CHOOZ data, respectively. Right-hand column: combined SK+CHOOZ allowed regions.
Although the SK+CHOOZ solutions are close to pureνμ↔ντoscillations, the allowed
values ofUe3^2 are not completely negligible, especially in the lower range ofm^2.