Because people have been asking about it after Brad Goff’s talk on Monday, here’s a little monograph I wrote as graduate student on the estimation. Please forgive some typos and grammatical mistakes – I was still wet behind the ears….
It’s also worth noting I only calculated the neutrino-electron cross-section, and only for CC interactions with solar neutrinos. There is also a substantial electron-nucleus cross section, but it’s probably not a huge correction… I stand by this estimate. Douglas Adams was prescient.