First Neutrino Oscillation Results from the T2K Experiment  

The Tokai to Kamioka (T2K) experiment is a long baseline high intensity 
neutrino oscillation experiment employing an off-axis beam to search for 
the as yet unobserved appearance of electron neutrinos in a muon neutrino 
beam.  T2K uses a high-purity muon neutrino beam to search for the  
appearance of electron neutrinos in order to limit or determine the 
last remaining unknown neutrino mixing angle, theta13. This angle is 
extremely important for proposed measurements of CP violation in future 
long baseline neutrino experiments. In addition, the T2K study of the 
disappearance of muon neutrinos, which is sensitive to the atmospheric 
mixing parameters, will be described. The neutrino beam originates at 
the J-PARC facility in Tokai, Japan, and the beam composition is 
measured by the ND280 and Super-Kamiokande (SK) detectors, located at 
distances of 280 m and 295 km, respectively.  The T2K experiment has 
produced results from its first data which were collected between 
January and June, 2010.  The first results for both measurements, 
and prospects for future results will be presented.