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Observation and polarization measurement of B^{0}→a_{1}(1260)^{+}a_{1}(1260)^{-} decay
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(2009) Observation and polarization measurement of B^{0}→a_{1}(1260)^{+}a_{1}(1260)^{-} decay. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.80 (No.9). article no. 092007. doi:10.1103/PhysRevD.80.092007 ISSN 1550-7998.
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Official URL: http://dx.doi.org/10.1103/PhysRevD.80.092007
Abstract
We present measurements of the branching fraction B and longitudinal polarization fraction fL for B0→a1(1260)+a1(1260)- decays, with a1(1260)±→π-π+π±. The data sample, collected with the BABAR detector at the SLAC National Accelerator Laboratory, represents 465×106 produced BB̅ pairs. We measure B(B0→a1(1260)+a1(1260)-)×[B(a1(1260)+→π-π+π+)]2= (11.8±2.6±1.6)×10-6 and fL=0.31±0.22±0.10, where the first uncertainty is statistical and the second systematic. The decay mode is measured with a significance of 5.0 standard deviations including systematic uncertainties.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | Physical Review D (Particles, Fields, Gravitation and Cosmology) | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1550-7998 | ||||
| Official Date: | 2009 | ||||
| Dates: |
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| Volume: | Vol.80 | ||||
| Number: | No.9 | ||||
| Page Range: | article no. 092007 | ||||
| DOI: | 10.1103/PhysRevD.80.092007 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published |
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