Abstract

Fermilab experiment E773 has measured the phases {Phi}{sub +{minus}}=43.53{degree}{plus_minus}0.97{degree} and {Phi}{sub 00}{minus}{Phi}{sub +{minus}}=0.62{degree}{plus_minus}1.03{degree} of the {ital CP} violating parameters {eta}{sub +{minus}} and {eta}{sub 00} from interference in the decay of neutral kaons into two charged or neutral pions from a pair of regenerators. New measurements of the {ital K}{sub {ital L}}-{ital K}{sub {ital S}} mass difference and the {ital K}{sub {ital S}} lifetime are also given. These results test {ital CPT} symmetry and show no evidence for a violation.

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