Observation of the Decay B0->rho+rho- and Measurement of the Branching Fraction and Polarization

Preprint

9 August 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ex/0308024

Abstract

We have observed the rare decay B0->rho+rho- in a sample of 89 million BBbar pairs recorded with the BABAR detector. We measure the branching fraction B(B0->rho+rho-)=(27+7-6+5-7)10^-6 and determine the longitudinal polarization fraction Gamma_L/Gamma=0.99+0.01-0.07+-0.03. Our results are preliminary.

Keywords

LONGITUDINAL POLARIZATION
FRACTION GAMMA_L/GAMMA
POLARIZATION FRACTION
BRANCHING FRACTION
DECAY B0
RHO

All Related Versions

Version 1, 2003-08-08, ArXiv
Version 2, 2003-08-09, ArXiv

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