Right-handed currents, CP Violation, and B->VV
Abstract
Precision CP violation measurements in rare hadronic B decays could provide clean signatures of parity symmetric new physics, implying the existence of SU(2)L x SU(2)R x U(1)B-L x P symmetry at high energies. New contributions to the weak scale Hamiltonian which respect parity to O(1%) in supersymmetric realizations are compatible with an SU(2)R breaking scale MR MGUT, implying that sensitivity to the GUT scale is possible. The generic case of right-handed currents without left-right symmetry is also discussed. A detailed analysis of B -> VV polarization in QCD factorization reveals that the low longitudinal polarization fraction fL (phi K*) ≈ 50% can be accounted for in the SM via a QCD penguin annihilation graph. The ratio of transverse rates (Gamma /Gamma) provides a sensitive test for new right-handed currents. CP violation measurements in B -> VV decays can discriminate between new contributions to the dipole and four quark operators.
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