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Observation and polarization measurement of B[superscript 0]-->a1(1260)[superscript +]a1(1260)[superscript -] decay

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Observation and polarization measurement of B[superscript 0]-->a1(1260)[superscript +]a1(1260)[superscript -] decay

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Alternative Title: Observation and polarization measurement of B0→a1(1260)+a1(1260)- decay
Author: Aubert, B.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Palano, A.; Pappagallo, M.; Eigen, G.; Stugu, B.; Sun, L.; Battaglia, M.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Tackmann, K.; Tanabe, T.; Hawkes, C. M.; Soni, N.; Watson, A. T.; Koch, H.; Schroeder, T.; Asgeirsson, D. J.; Fulsom, B. G. ... [more in full view]
Department: Massachusetts Institute of Technology. Dept. of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Publisher: American Physical Society
Date Issued: 2009-11
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.
URI: http://hdl.handle.net/1721.1/57585
ISSN: 1089-4918
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
Terms of Use: 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.
Published As: http://dx.doi.org/10.1103/PhysRevD.80.092007
Journal: Physical Review D

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