Observation and polarization measurement of B[superscript 0]-->a1(1260)[superscript +]a1(1260)[superscript -] decay
Author(s)
Dujmic, Denis; Henderson, Shawn Wesley; Sciolla, Gabriella; Yamamoto, R. K.; Zhao, M.; Fisher, Peter H; Cowan, Ray F; Spitznagel, Michael A; ... Show more Show less
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Alternative title
Observation and polarization measurement of B0→a1(1260)+a1(1260)- decay
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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)±-->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.
Date issued
2009-11Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
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
ISSN
1089-4918