Friday July 10 |
1pm |
Jordon Myslik, University of Victoria in Canada |
Neutrino Oscillations at T2K |
Since first being proposed to explain a dramatic difference between theoretical expectations and experimental observations, neutrinos have managed to maintain their mysterious reputation. The phenomenon of neutrino oscillation, where a neutrino of one flavor is observed to have changed into another while in transit, has been an area of intense experimental scrutiny. The T2K ("Tokai to Kamioka") experiment is a long-baseline neutrino oscillation experiment in Japan. A beam of muon neutrinos or muon antineutrinos is produced at the Japan Proton Accelerator Research Complex (J-PARC) in Tokai. The unoscillated neutrino flux is measured by the near detector complex 280 m from the proton target, and the oscillated neutrino flux is measured by the far detector, Super-Kamiokande, 295 km away. Using a beam of muon neutrinos, T2K has performed precise measurements of muon neutrino disappearance, and discovered muon neutrino to electron neutrino oscillation by measuring electron neutrino appearance. Since the summer of 2014, T2K has been taking data using a beam of muon antineutrinos, and has recently released its first result using antineutrino beam mode data: a muon antineutrino disappearance measurement. This talk will discuss these neutrino oscillation results, and using the recent muon antineutrino disappearance measurement as an example, give an overview of what goes into a T2K neutrino oscillation measurement. |