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SUMMARY:First Neutrino Oscillation Results from T2K. - Dr. Constantinos An
 dreopoulos (RAL)
DTSTART:20110510T140000Z
DTEND:20110510T150000Z
UID:TALK29063@talks.cam.ac.uk
CONTACT:John Marshall
DESCRIPTION:T2K is a second-generation long-baseline neutrino oscillation 
 experiment using the new high-intensity muon-neutrino beam produced at Jap
 an Proton Accelerator Research Complex (JPARC). Sitting 295 km away\, at a
 n off-axis angle of 2.5 degrees\, the giant Super-Kamiokande water Cherenk
 ov detector sees a narrow band beam peaked at 600 MeV. The baseline to ene
 rgy ratio is finely tuned for studying neutrino oscillations at the so-cal
 led atmospheric neutrino squared-mass splitting. The beam is also sampled 
 280 m downstream of the neutrino production target by a series of finely-s
 egmented solid-scintillator and time-projection-chamber detectors. Observi
 ng changes in the neutrino beam between the two detectors allows oscillati
 on parameters to be accurately extracted.\n\nThe main goal of the T2K expe
 riment is to produce the first measurement of the neutrino mixing angle \\
 theta_{13} and very precise measurements of the mixing angle \\theta_{23} 
 and of the atmospheric squared-mass splitting.\n\nI will present results f
 rom the muon-neutrino disappearance and electron-neutrino appearance analy
 ses \non the dataset collected during the first physics run which spanned 
 the period from January to June 2010. This first T2K dataset corresponds t
 o an integrated JPARC neutrino-beam exposure of 3.23E+19 protons-on-target
 .
LOCATION:Rutherford Seminar Room B
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