Abstract
We report improved measurements of the partial rate asymmetry (A CP) in B → hh decays with 140 fb -1 of data collected with the Belle detector at the KEKB e +e - collider. Here h stands for a charged or neutral pion or kaon and in total five decay modes are included: K ±π ±, K s 0π ±, K ±π 0, π ±π 0, and K s 0π 0. The flavor of the last decay mode is determined from the accompanying B meson. Using a data sample 4.7 times larger than that of our previous measurement, we find A CP(K ±π ±) - 0.088 ± 0.035 ± 0.013, 2.4σ from zero. Results for other decay modes are also presented.
| Original language | English (US) |
|---|---|
| Article number | 031502 |
| Pages (from-to) | 031502-1-031502-5 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 71 |
| Issue number | 3 |
| DOIs | |
| State | Published - Feb 2005 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)
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