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

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

2011-06-16

arxiv.org/abs/1106.3283v4

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 4 figures (png) - version published in NPB

Scientific paper

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.

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