An Improved Measurement of Mixing-induced CP Violation in the Neutral B Meson System
| dc.creator | The Belle Collaboration | |
| dc.creator | Abe, K. | |
| dc.date | 2002-07-30 | |
| dc.date | 2002-07-31 | |
| dc.date.accessioned | 2026-07-07T03:35:27Z | |
| dc.date.available | 2026-07-07T03:35:27Z | |
| 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 accompanying B meson is identified from itsdecay products. From the asymmetry in the distribution of the time intervals between the two B meson decay points, we obtain sin2phi_1 = 0.719 +/- 0.074(stat) +/- 0.035(syst). We also report measurements of CP violation parameters for the related B^0 -> J/psi pi^0 decay mode and the penguin-dominated processes B^0 -> eta' K_S, phi K_S and K^+K^- K_S. | |
| dc.description | 11 pages, 4 figures, 4 tables, contributed to ICHEP2002 | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0207098 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0207098 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/37358 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | An Improved Measurement of Mixing-induced CP Violation in the Neutral B Meson System | |
| dc.type | text |