Study of CP-Violating Asymmetries in B0 -> pi+pi- Decays
| dc.creator | The Belle Collaboration | |
| dc.creator | Abe, K. | |
| dc.date | 2002-04-03 | |
| dc.date | 2002-07-03 | |
| dc.date.accessioned | 2026-07-07T12:01:45Z | |
| dc.date.available | 2026-07-07T12:01:45Z | |
| dc.description | We present a measurement of CP-violating asymmetries in B0 -> pi+pi- decays based on a 41.8 fb-1 data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We fully reconstruct one neutral B meson as a B0 -> pi+pi- CP eigenstate and identify the flavor of the accompanying B meson from its decay products. From the asymmetry in the distribution of the time intervals between the two B meson decay points, we obtain the CP-violating asymmetry parameters Spipi = -1.21 +0.38/-0.27(stat) +0.16/-0.13(syst) and Apipi = +0.94 +0.25/-0.31(stat) +/- 0.09(syst). | |
| dc.description | 9 pages, 2 figures, accepted for publication in Physical Review Letters | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0204002 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0204002 | |
| dc.identifier | Phys.Rev.Lett.89:071801,2002 | |
| dc.identifier | doi:10.1103/PhysRevLett.89.071801 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207201 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Study of CP-Violating Asymmetries in B0 -> pi+pi- Decays | |
| dc.type | text |