A high sensitivity search for CP violating rare K{sub L} decays and precision measurement of the direct CP violation parameter {epsilon}{prime}/{epsilon} via the four K {yields} 2{pi} decay modes, Task J. Progress report, May 1, 1992--April 30, 1993
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}{prime}/{var_epsilon}){sub 2{pi}}=(7.4 {plus_minus} 5.2 [stat] {plus_minus} 2.9 [syst] ) {times} 10{sup {minus}4} . The value favors a high top ark mass value within the Standard Model. E773 tests CPT violation by determining ({Delta}{phi}){sub 2{pi}} with an accuracy of about 0.5{sup 0}. 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}{yields} {pi}{sup 0} l {sup +}l{sup {minus}} (where l = e, {mu} {nu}) 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.
- Research Organization:
- Chicago Univ., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-90ER40560
- OSTI ID:
- 10164096
- Report Number(s):
- DOE/ER/40560--4J; ON: DE93016866
- Country of Publication:
- United States
- Language:
- English
Similar Records
A high sensitivity search for CP violating rare K[sub L] decays and precision measurement of the direct CP violation parameter [epsilon][prime]/[epsilon] via the four K [yields] 2[pi] decay modes, Task J
Precision measurement of the direct CP violation parameter {var_epsilon}{prime}/{var_epsilon} via the four K {yields} 2{pi} decay modes and a high sensitivity search for CP violating rare K{sub L} decays, Task J. Progress report, May 1, 1991--April 30, 1992
Precision measurement of the direct CP violation parameter. var epsilon. prime /. var epsilon. via the four K yields 2. pi. decay modes and a high sensitivity search for CP violating rare K sub L decays, Task J
Technical Report
·
Sat May 01 00:00:00 EDT 1993
·
OSTI ID:6326950
Precision measurement of the direct CP violation parameter {var_epsilon}{prime}/{var_epsilon} via the four K {yields} 2{pi} decay modes and a high sensitivity search for CP violating rare K{sub L} decays, Task J. Progress report, May 1, 1991--April 30, 1992
Technical Report
·
Tue Mar 31 23:00:00 EST 1992
·
OSTI ID:10154988
Precision measurement of the direct CP violation parameter. var epsilon. prime /. var epsilon. via the four K yields 2. pi. decay modes and a high sensitivity search for CP violating rare K sub L decays, Task J
Technical Report
·
Tue Mar 31 23:00:00 EST 1992
·
OSTI ID:5083692
Related Subjects
662120
662350
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
CP INVARIANCE
DATA COVARIANCES
DECAYS OF MESONS
ELECTRONS
EXPERIMENTAL DATA
KAONS NEUTRAL LONG-LIVED
MASS
NEUTRINOS
PHOTONS
PIONS
POSITRONS
PROGRESS REPORT
QUARKS
SYMMETRY
CONSERVATION LAWS
CURRENTS AND THEIR PROPERTIES
WEAK PARTICLE DECAY
662350
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
CP INVARIANCE
DATA COVARIANCES
DECAYS OF MESONS
ELECTRONS
EXPERIMENTAL DATA
KAONS NEUTRAL LONG-LIVED
MASS
NEUTRINOS
PHOTONS
PIONS
POSITRONS
PROGRESS REPORT
QUARKS
SYMMETRY
CONSERVATION LAWS
CURRENTS AND THEIR PROPERTIES
WEAK PARTICLE DECAY