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

doi:10.1103/physrevlett.83.22

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Observation of Direct CP Violation in KS,L→ππ Decays

1999

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
et al.

Published Web Location

https://doi.org/10.1103/physrevlett.83.22

Creative Commons 'BY' version 4.0 license

Abstract

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.

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Observation of Direct CP Violation in KS,L→ππ Decays

Published Web Location