Download or read book A High Sensitivity Search for CP Violating Rare K{sub L} Decays and Precision Measurement of the Direct CP Violation Parameter????????/? Via the Four K → 2? Decay Modes, Task J. Progress Report, May 1, 1992--April 30, 1993 written by and published by . This book was released on 1993 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fermilab experiments E731, E773, E799, and E832 are a series of experiments to investigate the physics of CP violation, CPT violation, and rare decays of the neutral kaon system. E731 finished data taking in 1988, during past year the full data set analysis was completed and yielded ({var_epsilon}′/{var_epsilon}){sub 2?}=(7.4 ± 5.2 [stat] ± 2.9 [syst]) × 10−4 . The value favors a high top ark mass value within the Standard Model. E773 tests CPT violation by determining (??){sub 2{pi}} with an accuracy of about 0.5°. Data were taken during the last Fermilab Fixed Target run period between September and November 1991. It is anticipated the data analysis will be finished within a year. E799, with the primary goal of observing direct Cp Violation via searching for the rare decay K{sub L}→ {pi}° l l− (where l = e,??) took test data between November 1991 and January 1992 (Phase 1). Some preliminary results are shown here. E799 (Phase II) and E832 (a follow up experiment of E731) are scheduled to take data after the current Fermilab collider run with a new facility and detector.