The Final Measurement of Epsilon'/Epsilon from KTeV
We present precise measurements of CP and CPT symmetry based on the full dataset of K {yields} {pi}{pi} decays collected by the KTeV experiment at FNAL. We measure the direct CP violation parameter Re({epsilon}{prime}/{epsilon}) = (19.2 {+-} 2.1) x 10{sup -4}. We find the KL-KS mass difference {Delta}m = (5265 {+-} 10) x 10{sup 6} hs{sup -1} and the K{sub S} lifetime {tau}{sub S} = (89.62 {+-} 0.05) x 10{sup -12} s. We test CPT symmetry by finding the phase of the indirect CP violation parameter {epsilon}, {phi}{sub {epsilon}} = (44.09 {+-} 1.00){sup o}, and the difference of the relative phases between the CP violating and CP conserving decay amplitudes for K {yields} {pi}{sup +}{pi}{sup -} ({phi}{sub {+-}}) and for K {yields} {pi}{sup 0}{pi}{sup 0} ({phi}{sub 00}), {Delta}{phi} = (0.29 {+-} 0.31){sup o}. These results are consistent with other experimental results and with CPT symmetry.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 964430
- Report Number(s):
- FERMILAB-CONF-09-430-E; arXiv eprint number arXiv:0909.2555; TRN: US0903483
- Resource Relation:
- Conference: Presented at Heavy Quarks and Leptons 2008 (HQ&L08), Melbourne, Australia, 5-9 Jun 2008
- Country of Publication:
- United States
- Language:
- English
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