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Observation of CP violation in B0→K+π- and B0→π+π-
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BABAR Collaboration (Including:
). (2007) Observation of CP violation in B0→K+π- and B0→π+π-. Physical Review Letters, Vol.99 (No.2). Article: 021603. ISSN 0031-9007 Full text not available from this repository.
Official URL: http://dx.doi.org/10.1103/PhysRevLett.99.021603
Abstract
We report observations of CP violation in the decays B-0 -> K+pi(-) and B-0 ->pi(+)pi(-) in a sample of 383 x 10(6) Upsilon(4S)-> B (B) over bar events. We find 4372 +/- 82 B-0 -> K+pi(-) decays and measure the direct CP-violating charge asymmetry A(K pi)=-0.107 +/- 0.018(stat)(-0.004)(+0.007)(syst), which excludes the CP-conserving hypothesis with a significance of 5.5 standard deviations. In the same sample, we find 1139 +/- 49 B-0 ->pi(+)pi(-) decays and measure the CP-violating asymmetries S-pi pi=-0.60+/-0.11(stat) +/- 0.03(syst) and C-pi pi=-0.21 +/- 0.09(stat) +/- 0.02(syst). CP conservation in B-0 ->pi(+)pi(-) (S-pi pi=C-pi pi=0) is excluded at a confidence level 1-C.L.=8 x 10(-8), corresponding to 5.4 standard deviations.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Physics |
| Journal or Publication Title: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| Date: | 13 July 2007 |
| Volume: | Vol.99 |
| Number: | No.2 |
| Number of Pages: | 7 |
| Page Range: | Article: 021603 |
| Identification Number: | 10.1103/PhysRevLett.99.021603 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| URI: | http://wrap.warwick.ac.uk/id/eprint/31667 |
Data sourced from Thomson Reuters' Web of Knowledge
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