[HTML][HTML] The riddle of polarization in B→ VV transitions
P Colangelo, F De Fazio, TN Pham - Physics Letters B, 2004 - Elsevier
P Colangelo, F De Fazio, TN Pham
Physics Letters B, 2004•ElsevierMeasurements of polarization fractions in B→ VV transitions, with V a light vector meson,
show that the longitudinal amplitude dominates in B0→ ρ+ ρ−, B+→ ρ+ ρ0, and B+→ ρ0K*+
decays and not in the penguin induced decays B0→ ϕK* 0, B+→ ϕK*+. We study the effect
of rescattering mediated by charmed resonances, finding that in B→ ϕK* it can be
responsible of the suppression of the longitudinal amplitude. For the decay B→ ρK* we find
that the longitudinal fraction cannot be too large without invoking new effects.
show that the longitudinal amplitude dominates in B0→ ρ+ ρ−, B+→ ρ+ ρ0, and B+→ ρ0K*+
decays and not in the penguin induced decays B0→ ϕK* 0, B+→ ϕK*+. We study the effect
of rescattering mediated by charmed resonances, finding that in B→ ϕK* it can be
responsible of the suppression of the longitudinal amplitude. For the decay B→ ρK* we find
that the longitudinal fraction cannot be too large without invoking new effects.
Measurements of polarization fractions in B→VV transitions, with V a light vector meson, show that the longitudinal amplitude dominates in B0→ρ+ρ−, B+→ρ+ρ0, and B+→ρ0K*+ decays and not in the penguin induced decays B0→ϕK*0, B+→ϕK*+. We study the effect of rescattering mediated by charmed resonances, finding that in B→ϕK* it can be responsible of the suppression of the longitudinal amplitude. For the decay B→ρK* we find that the longitudinal fraction cannot be too large without invoking new effects.
Elsevier
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