Aubert, B. et al. (2009) Improved Measurement of B+→ρ+ρ0 and Determination of the Quark-Mixing Phase Angle α. Physical Review Letters, 102 (14). p. 141802. ISSN 0031-9007
Metadata only available from this repository.Abstract
We present improved measurements of the branching fraction B, the longitudinal polarization fraction fL, and the direct CP asymmetry ACP in the B meson decay channel B+→ρ+ρ0. The data sample was collected with the BABAR detector at SLAC. The results are B(B+→ρ+ρ0)=(23.7±1.4±1.4)×10-6, fL=0.950±0.015±0.006, and ACP=-0.054±0.055±0.010, where the uncertainties are statistical and systematic, respectively. Based on these results, we perform an isospin analysis and determine the Cabibbo-Kobayashi-Maskawa phase angle α=arg(-VtdVtb*/VudVub*) to be (92.4-6.5+6.0)°.
Item Type: | Article |
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Subjects: | Q Science > QC Physics |
Schools: | School of Applied Sciences |
Related URLs: | |
Depositing User: | Sharon Beastall |
Date Deposited: | 04 Jan 2012 12:35 |
Last Modified: | 28 Aug 2021 11:13 |
URI: | http://eprints.hud.ac.uk/id/eprint/12315 |
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