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

2003/08/08 by The BABAR Collaboration, B. Aubert, Aubert, B.
Physics and Astronomy · #Atomic and Subatomic Physics Research #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0308024

15 pages, 8 postscript figures, Contributed to the XXIst International Symposium on Lepton and Photon Interactions at High Energies, 8/11 - 8/16/2003, Fermilab, Illinois USA

arxiv created 2003/08/09 · arxiv updated 2009/12/01

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.

Related

• Measurement of the Branching Fractions for the Decays B+ -> rho+ gamma, B0 -> rho0 gamma, and B0 -> omega gamma
• Measurement of the branching fraction, polarization, and CP asymmetry in B0 -> rho+rho- decays
• Measurements of Branching Fraction, Polarization, and Direct-CP-Violating Charge Asymmetry in B+ --> K*0 Rho+ Decays
• Time-Dependent Analysis of the Decay B0 --> rho0 rho0
• Measurement of the B+- --> rho+- pi0 Branching Fraction and Direct CP Asymmetry