Observation and polarization measurement of B[superscript 0]-->a1(1260)[superscript +]a1(1260)[superscript -] decay
Name
Aubert-2009-Observation and pola.pdf
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Author(s)
Dujmic, Denis
Henderson, Shawn Wesley
Sciolla, Gabriella
Yamamoto, R. K.
Zhao, M.
Fisher, Peter H
Cowan, Ray F
Spitznagel, Michael A
Alternative Title
Observation and polarization measurement of B0→a1(1260)+a1(1260)- decay
Date Issued
November 2009
Journal
Physical Review D
Publisher
American Physical Society
Citation
BABAR Collaboration et al. “Observation and polarization measurement of B[superscript0]-->a1(1260)[superscript +]a1(1260)[superscript -] decay.” Physical Review D 80.9 (2009): 092007.© 2009 The American Physical Society.
Version
Final published version
Abstract
We present measurements of the branching fraction B and longitudinal polarization fraction fL for B0-->a1(1260)+a1(1260)- decays, with a1(1260)±-->pi-pi+pi±. 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)+-->pi-pi+pi+)]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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.80.092007
