- Alavi-Harati, A;
- Albuquerque, IF;
- Alexopoulos, T;
- Arenton, M;
- Arisaka, K;
- Averitte, S;
- Barker, AR;
- Bellantoni, L;
- Bellavance, A;
- Belz, J;
- Ben-David, R;
- Bergman, DR;
- Blucher, E;
- Bock, GJ;
- Bown, C;
- Bright, S;
- Cheu, E;
- Childress, S;
- Coleman, R;
- Corcoran, MD;
- Corti, G;
- Cox, B;
- Crisler, MB;
- Erwin, AR;
- Ford, R;
- Glazov, A;
- Golossanov, A;
- Graham, G;
- Graham, J;
- Hagan, K;
- Halkiadakis, E;
- Hanagaki, K;
- Hidaka, S;
- Hsiung, YB;
- Jejer, V;
- Jennings, J;
- Jensen, DA;
- Kessler, R;
- Kobrak, HGE;
- LaDue, J;
- Lath, A;
- Ledovskoy, A;
- McBride, PL;
- McManus, AP;
- Mikelsons, P;
- Monnier, E;
- Nakaya, T;
- Nauenberg, U;
- Nelson, KS;
- Nguyen, H;
- O'Dell, V;
- Pang, M;
- Pordes, R;
- Prasad, V;
- Qiao, C;
- Quinn, B;
- Ramberg, EJ;
- Ray, RE;
- Roodman, A;
- Sadamoto, M;
- Schnetzer, S;
- Senyo, K;
- Shanahan, P;
- Shawhan, PS;
- Slater, W;
- Solomey, N;
- Somalwar, SV;
- Stone, RL;
- Suzuki, I;
- Swallow, EC;
- Swanson, RA;
- Taegar, SA;
- Tesarek, RJ;
- Thomson, GB;
- Toale, PA;
- Tripathi, A;
- Tschirhart, R;
- Wah, YW;
- Wang, J;
- White, HB;
- Whitmore, J;
- Winstein, B;
- Winston, R;
- Wu, J-Y;
- Yamanaka, T;
- Zimmerman, ED
We have compared the decay rates of KL and KS toΠ+ Π- Π0Π0 final states using a subset of the data from the KTeV experiment (E832) at Fermilab. We find that the direct-CP-violation parameter Re (μ’/μ) is equal to [28.0±3.0(stat)±2.8(syst)]×10-4. This result definitively establishes the existence of CP violation in a decay process. © 1999 The American Physical Society.
