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arXiv · hep-ex/0301028

Measurements of the Branching Fractions and Helicity Amplitudes in B --> D* rho Decays

CLEO Collaboration·S. E. Csorna
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Abstract

Using 9.1 fb-1 of e+ e- data collected at the Upsilon(4S) with the CLEO detector using the Cornell Electron Storage Ring, measurements are reported for both the branching fractions and the helicity amplitudes for the decays B- -> D*0 rho- and B0bar -> D*+ rho-. The fraction of longitudinal polarization in B0bar -> D*+ rho- is found to be consistent with that in B0bar -> D*+ l- nubar at q^2 = M^2_rho, indicating that the factorization approximation works well. The longitudinal polarization in the B- mode is similar. The measurements also show evidence of non-trivial final-state interaction phases for the helicity amplitudes.

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CLEO Collaboration, S. E. Csorna. 2003-01-16. Measurements of the Branching Fractions and Helicity Amplitudes in B --> D* rho Decays. https://doi.org/10.1103/physrevd.67.112002

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