The T2K experiment in Japan has seen indications that neutrinos are about as mixed up as they could be.As I was writing my earlier post about my own experiment this morning, I got an email from Dave Wark, who was in the Green Room for the BBC Radio 4 Today programme gossiping about cricket and waiting to talk about a wholly different particle physics excitement, from his experiment, T2K.T2K means Tokai to Kamioka. Until it was closed temporarily due to earthquake damage, the JPARC facility in Tokai was firing neutrinos across Japan and the Super Kamiokande detector was watching to see if they changed type.Neutrinos come in three types, or flavours. We already knew from previous experiments that these flavours could be mixed up two ways. Now it looks like they can mix up three ways, since T2K has seen indications of muon neutrinos turning into electron neutrinos.This is quite...
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