Measurement of CP-Violation Parameter sin(2phi1) with 152 Million BB-bar Pairs
| dc.creator | The Belle Collaboration | |
| dc.creator | Abe, K. | |
| dc.date | 2003-08-15 | |
| dc.date.accessioned | 2026-07-07T08:22:08Z | |
| dc.date.available | 2026-07-07T08:22:08Z | |
| dc.description | We present a precise measurement of the standard model CP-violation parameter sin(2phi1) based on a sample of 152 x 10^6 BB-bar 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 Ks0, psi(2S) Ks0, chi_c1 Ks0, eta_c Ks0, J/psi K*0, or J/psi KL 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 sin(2phi1) = 0.733 +/- 0.057(stat) +/- 0.028(syst). | |
| dc.description | 11 pages, 4 postscript figures, contributed to the XXI International Symposium on Lepton and Photon Interactions at High Energies, Aug. 11-16, 2003, Fermilab, Illinois USA | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0308036 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0308036 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/135549 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of CP-Violation Parameter sin(2phi1) with 152 Million BB-bar Pairs | |
| dc.type | text |