BABAR Publications

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PUB-03/040 Observation of the Decay B0->rho+rho- and Measurement of the Branching Fraction and Polarization
Doc Type Journal Papers
Record Created October 20, 2003
SLAC-PUB
SLAC-PUB-10217  No citations
Preprint # hep-ex/0311017
Abstract
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We have observed the rare decay B0 => rho+ rho- in a sample 
of 89 million BB pairs recorded with the BABAR detector.
The number of observed events is 88 +23-21 +-9, 
with a significance of 5.1 standard deviations with 
systematic uncertainties included. The branching fraction 
and the longitudinal polarization are measured to be
BR(B0 => rho+ rho-) = (25 +7-6 +5-6)*10^{-6} and 
Gamma_L/Gamma = 0.98 +0.02-0.08 +-0.03, respectively.

Revisions and Files 1 revised October 20, 2003
File Date
Thumbnails
File Name File Type File Format File Size (Kb) Comments
07-NOV-2003 abstract.tex Abstract txt 0.43
07-NOV-2003 babar-pub-03040.ps Paper (journal paper or conference submission by BABAR Collaboration) ps 641.10
07-NOV-2003 fig01.eps Figure or plot eps 34.14 B->rho+rho- decay diagrams
07-NOV-2003 fig02.eps Figure or plot eps 35.49 Helicity angles
07-NOV-2003 fig03.eps Figure or plot eps 82.98 B->rho+rho- projection plots
Submitted ToPhysical Review D - Rapid Communications
Date SubmittedNovember 6, 2003
Journal Year2004
Journal Volume69
Journal Article/Page Range031102
Categories
  • AWG: Charmless Q2-body