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- W1809478085 abstract "Factorizable amplitudes in B decays to light vector meson pairs give a longitudinal polarization satisfying 1−fL=O(1/mb2). This remains formally true when non-factorizable graphs are included in QCD factorization, and is numerically realized in B→ρρ. In ΔS=1 decays a QCD penguin annihilation graph can effectively contribute at leading power to the transverse and longitudinal amplitudes. The observed longitudinal polarization, fL(B→ϕK*)≈50%, can therefore be accounted for in the SM. The ratio of transverse rates Γ⊥/Γ∥ provides a sensitive test for new right-handed currents. The transverse b→sg dipole operator amplitudes are highly suppressed. CP violation measurements can therefore discriminate between new contributions to the dipole and four quark operators. SU(3)F violation in QCD penguin amplitudes can easily be O(1), in general, due to annihilation. Implications for B→ρK* polarization and New Physics searches are pointed out." @default.
- W1809478085 created "2016-06-24" @default.
- W1809478085 creator A5083483348 @default.
- W1809478085 date "2004-11-01" @default.
- W1809478085 modified "2023-10-17" @default.
- W1809478085 title "Polarization in <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML altimg=si1.gif overflow=scroll><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:mi>V</mml:mi><mml:mi>V</mml:mi></mml:math> decays" @default.
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- W1809478085 doi "https://doi.org/10.1016/j.physletb.2004.09.030" @default.
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