| DATE: |
2004-03-16 16:00 - 17:00 |
| PLACE: |
Rm345 in Building No.4 |
| TITLE: |
Physics Seminar: Search for Neutrino Appearance in a 250 km Long-baseline Experiment [English] |
| CONTACT: |
Physics Seminar Organizers |
| SPEAKER: |
Makoto Yoshida (Osaka Univ.) |
| LANGUAGE: |
English |
| URL: |
http://seminar.kek.jp/physics/ |
| ABSTRACT: |
The first result from the K2K neutrino experiment on a search for electron neutrino appearance from accelerator produced muon neutrinos will be presented. One candidate event is found in the data corresponding to an exposure of $4.8\\times{}10^{19}$ protons on target. The expected background in the absence of neutrino oscillations is estimated to be $2.4\\pm{}0.6$ events and is dominated by mis-identification of events from neutral current $\\pi0$ production. The \\numu to \\nue oscillations are excluded at 90\\% C.L. for $\\sin2 2 \\theta_{\\mu{}e}} > 0.15$ at the best parameter values of the \\numu disappearance analysis in K2K. |
