E-resources
-
Becker-Szendy, R.; Bratton, C.B.; Cady, D.R.; Casper, D.; Claus, R.; Crouch, M.; Dye, S.T.; Gajewski, W.; Goldhaber, M.; Haines, T.J.; Halverson, P.G.; Jones, T.W.; Kielczewska, D.; Kropp, W.R.; Learned, J.G.; LoSecco, J.M.; McGrew, C.; Matsuno, S.; Mudan, M.S.; Price, L.; Reines, F.; Schultz, J.; Sinclair, D.; Sobel, H.W.; Stone, J.L.; Sulak, L.R.; Svoboda, R.; Thornton, G.; van der Velde, J.C.
Physical review. D, Particles and fields, 11/1990, Volume: 42:9Journal Article
We report the results of a search for proton decay into {ital e}{sup +}+{pi}{sup 0} in the 6800-ton IMB-3 water Cherenkov detector. During 376 days of live time no events consistent with this decay were found in the 3300 ton fiducial volume. From this observation we derive a limit on the partial lifetime to be {tau}/{ital B}{gt}2.4{times}10{sup 32} yr (90% C.L.), which, combined with our previous result of 3.1{times}10{sup 32} yr, provides a limit of 5.5{times}10{sup 32} yr. The general features of the observed contained events are compatible with those expected from atmospheric neutrino interactions.
