I'm reading the neutrino oscillations paper from the SNO and I'm having a bit of trouble interpreting their results on page 4.
I understand that they fitted PDFs to the data to get an amount of events and subsequently the fluxes, but how do you interpret these fluxes?
The CC channel is only sensitive to electron-neutrinos, so it makes sense that this is just the electron-neutrino flux coming from the Sun.
The NC channel is equally sensitive to all neutrino flavours, so it also makes sense to interpret this as the total neutrino flux coming from the Sun.
This leaves us with the ES channel. It is more sensitive to electron neutrinos than to muon and tau neutrinos, but it's still sensitive to all flavours, so why doesn't this also give us the total flux coming from the Sun?
A given electron, muon or tau neutrino has a certain chance to be detected by either CC, NC or ES.
If a CC, NC or ES event occurs, there's a certain chance that it's an electron, muon or tau neutrino.
How do you translate these statements into interpretations for the ES flux?