Improved Measurement of Mixing-induced CP Violation in the Neutral B Meson System
| dc.creator | The Belle Collaboration | |
| dc.creator | Abe, K. | |
| dc.date | 2002-08-16 | |
| dc.date | 2002-10-28 | |
| dc.date.accessioned | 2026-07-07T12:01:49Z | |
| dc.date.available | 2026-07-07T12:01:49Z | |
| dc.description | We present an improved measurement of the standard model CP violation parameter sin2phi_1 (also known as sin2beta) based on a sample of 85 times 10^6 B Bbar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. One neutral B meson is reconstructed in a J/psi K_S, psi(2S) K_S, chi_{c1} K_S, eta_c K_S, J/psi K^{*0}, or J/psi K_L CP-eigenstate decay channel and the flavor of the accompanying B meson is identified from its decay products. From the asymmetry in the distribution of the time interval between the two B meson decay points, we obtain sin2phi_1 = 0.719 +/- 0.074(stat) +/- 0.035(syst). | |
| dc.description | 10 pages, 3 figures, 3 tables, accepted for publication in PRD Rapid Communications | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0208025 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0208025 | |
| dc.identifier | Phys.Rev.D66:071102,2002 | |
| dc.identifier | doi:10.1103/PhysRevD.66.071102 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207229 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Improved Measurement of Mixing-induced CP Violation in the Neutral B Meson System | |
| dc.type | text |