[Physicist]

There's definitely an MSW effect going on. They have extracted the MSW parameters from the charged-current and neutral-current measurements. Furthermore, as a check they have measured the day-night asymmetry, which arises from the fact that at night, the solar neutrinos have to pass through the bulk of the Earth.

[longshadow]

There's definitely an MSW effect going on. They have extracted the MSW parameters from the charged-current and neutral-current measurements. Furthermore, as a check they have measured the day-night asymmetry, which arises from the fact that at night, the solar neutrinos have to pass through the bulk of the Earth.

Ah, that's very interesting; I thought I had read somewhere that the day/night asymmetry was too small for the MSW effect to account for the "missing" Solar neutrinos, but maybe that was an out-of-date reference I saw... Wolfenstein (of MSW) should be delighted.