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Observation and polarization measurement of B^{0}→a_{1}(1260)^{+}a_{1}(1260)^{-} decay

Aubert, B. et al. (2009) Observation and polarization measurement of B^{0}→a_{1}(1260)^{+}a_{1}(1260)^{-} decay. Physical Review D, 80 (9). 092007. ISSN 1550-7998

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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: Article
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
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Depositing User: Sharon Beastall
Date Deposited: 05 Jan 2012 10:26
Last Modified: 28 Aug 2021 11:13


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