Direct CP Violating Asymmetry in B0 -> K+pi- Decays
| dc.creator | BaBar Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2004-07-30 | |
| dc.date | 2005-01-25 | |
| dc.date.accessioned | 2026-07-07T11:57:53Z | |
| dc.date.available | 2026-07-07T11:57:53Z | |
| dc.description | We present a measurement of the direct CP violating asymmetry in the decay B0 -> K+pi- using 227 x 10^6 Y(4S) -> BBbar decays collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at SLAC, we observe a total signal yield of n(K-pi+) + n(K+pi-) = 1606 +- 51 decays and measure the asymmetry [n(K-pi+)-n(K+pi-)]/[n(K-p+-)+n(K+pi-)] = -0.133+-0.030 (stat) +- 0.009 (syst). The probability of observing such an asymmetry in the absence of direct CP violation is 1.3 x 10^-5, corresponding to 4.2 standard deviations. | |
| dc.description | PRL version | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0407057 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0407057 | |
| dc.identifier | Phys.Rev.Lett.93:131801,2004 | |
| dc.identifier | doi:10.1103/PhysRevLett.93.131801 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206041 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Direct CP Violating Asymmetry in B0 -> K+pi- Decays | |
| dc.type | text |