High Energy Physics Seminar- Hiro Tanaka-"Recent results from the Tokai-to-Kamioka (T2K) Experiment"

Mon, Oct 10, 2011, 2:00 pm to 3:00 pm
Jadwin A06
I will report on recent results from the Tokai-to-Kamioka (T2K) experiment, which aims to make high sensitivity and precise studies of neutrino oscillation using an intense off-axis muon neutrino beam produced by the Japan Proton Accelerator Complex (J-PARC) and directed towards the Super Kamiokande (SK) detector 295 km away. By searching for the transition of muon neutrinos to electron neutrinos at SK, the experiment will extend the sensitivity to the yet-unobserved mixing parameter theta_13, a necessary ingredient for CP violation in the lepton sector. The deficit of muon neutrinos resulting from muon neutrino to tau neutrino oscillation will allow T2K to make precise measurements of theta_23 and Delta m^2_32, two other fundamental parameters of the lepton mixing matrix that will shed light on its structure, in particular the apparently maximal mixing suggested by current measurements. The reported results are based on data taken in 2010 and 2011 using 1.43x10^{20} protons-on-target.