Search for the decay K(L) ---> pi0 neutrino anti-neutrino
Journal
Physics Letters
Journal Volume
B295
Pages
169-173
Date Issued
1992-04
Author(s)
Graham, G. E.
Abstract
Data collected in Fermilab experiment E731 was used to perform the first search for the decay KL→π0νν. This decay is dominated by short distance effects and is almost entirely direct CP violating within the standard model. Cuts were developed to reject the background processes Λ→nπ0 and KL→π+e-γν. No candidate events were seen. We find BR (KL→π0νν)<2.2 × 10-4 at the 90% confidence level. © 1992.
Type
journal article