Abstract
The E731 experiment at Fermilab has searched for direct CP violation in →ππ, which is parametrized by ɛ’/ɛ. For the first time all four of the S→ππ modes were collected simultaneously, which greatly facilitated studies of systematic uncertainty. We find Re(ɛ’/ɛ)=-0.0004±0.0014(stat)±0.0006(syst). The result provides no evidence for direct CP violation.
- Received 18 December 1989
DOI:https://doi.org/10.1103/PhysRevLett.64.1491
©1990 American Physical Society