Observation of Time-Dependent CP Violation in B0 -> eta' K0 Decays and Improved Measurements of CP Asymmetries in B0 -> phiK0, KsKsKs and B0 -> J/psi K0 Decays
| dc.creator | The Belle Collaboration | |
| dc.creator | Chen, K. -F. | |
| dc.date | 2006-08-15 | |
| dc.date | 2007-01-17 | |
| dc.date.accessioned | 2026-07-07T11:43:15Z | |
| dc.date.available | 2026-07-07T11:43:15Z | |
| dc.description | We present improved measurements of CP-violation parameters in B0->phiK0, eta'K0, KsKsKs decays based on a sample of 535x10^6 BBbar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. We obtain sin2phi_1^eff=+0.64+-0.10(stat)+-0.04(syst) for B0->eta'K0, +0.50+-0.21(stat)+-0.06(syst) for B0->phiK0, and +0.30+-0.32(stat) +-0.08(syst) for B0->KsKsKs decays. We have observed CP violation in the B0->eta'K0 decay with a significance of 5.6 standard deviations. We also perform an improved measurement of CP asymmetries in B0->J/psiK0 decays and obtain sin2phi_1=+0.642+- 0.031(stat)+-0.017(syst). | |
| dc.description | 6 pages, 3 figures, updated to be consistent with the version published in PRL | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0608039 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0608039 | |
| dc.identifier | Phys.Rev.Lett.98:031802,2007 | |
| dc.identifier | doi:10.1103/PhysRevLett.98.031802 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/201170 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Observation of Time-Dependent CP Violation in B0 -> eta' K0 Decays and Improved Measurements of CP Asymmetries in B0 -> phiK0, KsKsKs and B0 -> J/psi K0 Decays | |
| dc.type | text |