Observation of the Decay B0 => rho+ rho- and Measurement of the Branching Fraction and Polarization
| dc.creator | The BABAR Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2003-11-07 | |
| dc.date.accessioned | 2026-07-07T12:02:08Z | |
| dc.date.available | 2026-07-07T12:02:08Z | |
| dc.description | We have observed the rare decay B0 => rho+ rho- in a sample of 89 million BB pairs recorded with the BABAR detector. The number of observed events is 88 +23-21 +-9, with a significance of 5.1 standard deviations with systematic uncertainties included. The branching fraction and the longitudinal polarization are measured to be BR(B0 => rho+ rho-) = (25 +7-6 +5-6)*10^{-6} and Gamma_L/Gamma = 0.98 +0.02-0.08 +-0.03, respectively. | |
| dc.description | 8 pages, 3 postscript figues, submitted to Phys. Rev. D (Rapid Communications) | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0311017 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0311017 | |
| dc.identifier | Phys.Rev.D69:031102,2004 | |
| dc.identifier | doi:10.1103/PhysRevD.69.031102 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207336 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Observation of the Decay B0 => rho+ rho- and Measurement of the Branching Fraction and Polarization | |
| dc.type | text |