The latest posts tagged with neutrinoSunday — June 10, 2012
This is somewhat overdue, but last week NYU hosted the World Science Festival 2012. As most of you know, I’m leaving to Chicago for a few years, this year was going to be my last year for awhile where I am able to attend (most likely). Therefore, I spent Thursday, Friday, Saturday, and Sunday going to various discussions and events. I decided to take a ridiculous amount of pictures using my friends’ cameras and give Cosmic to Quantum followers a recap to encourage some to try and attend next year. I would recommend you sit tight and be comfortable because this is a hell of a recap.
Continue Reading World Science Festival 2012.
Neutrinos produced by a nuclear reactor in China are changing from one flavour to another more rapidly than expected. The result means physicists could soon explain why the universe is filled with matter instead of featureless radiation.
Neutrinos and antineutrinos each come in three flavours: electron, muon and tau. As they fly through space, these particles can morph from one flavour into another.
This shape-shifting ability is measured by three parameters, also called mixing angles: theta12, theta23 and theta13. Until recently, only the first two mixing angles had been measured. Then, in June last year, the T2Kexperiment in Japan detected muon neutrinos turning into electron neutrinos, providing preliminary estimates for theta13.
But the T2K observations depend on other mixing angles. “So it was hard to pinpoint a unique value for theta13,” says Kam-Biu Luk at the University of California, Berkeley. Now researchers at the Daya Bay Reactor Neutrino Experiment, based in southern China, have done just that.
The Daya Bay experiment tracks electron antineutrinos produced by six nuclear reactors at Daya Bay. Two sets of detectors are used: one placed a few hundred metres from the reactors, and one placed 2 kilometres away. The more distant detectors see fewer electron antineutrinos than the nearby ones, because as they travel some change into other flavours of antineutrino, which the detectors cannot spot.
Continue Reading Neutrinos could help Explain Missing Antimatter.