On transverse asymmetries in B --> K* l+l-

Damir Becirevic (1) , Elia Schneider (2)

1 LPT - Laboratoire de Physique Théorique d'Orsay [Orsay]
2 Enrico Fermi - Dipartimento di Fisica

We discuss the three independent asymmetries, AT(2)(q2), AT(im)(q2) and AT(re)(q2), that one can build from the amplitudes A_perp(q2) and A_par(q2). These quantities are expected to be accessible from the new B-physics experiments, they are sensitive to the presence of new physics, and they are not significantly sensitive to hadronic uncertainties. Studying their low q2-dependence can be helpful in discerning among various possible new physics scenarios. All three asymmetries can be extracted from the full angular analysis of B-->K* l+l-. Our formulas apply to both the massless and the massive lepton case.

Domaines: Physique des Hautes Energies - Expérience [hep-ex]; Physique des Hautes Energies - Phénoménologie [hep-ph]

Damir Becirevic, Elia Schneider. On transverse asymmetries in B --> K* l+l-. Nucl. Phys. B, 2012, 854, pp.321-339. ⟨10.1016/j.nuclphysb.2011.09.004⟩. ⟨hal-00601838⟩