New physics effects in (Lambda_b -> Lambda l^+ l^-) decay with lepton polarizations

Details New physics effects in (Lambda_b -> Lambda l^+ l^-) decay with lepton polarizations New physics effects in (Lambda_b -> Lambda l^+ l^-) decay with lepton polarizations

2002-03-05

arxiv.org/abs/hep-ph/0203045v1

Phys.Rev.D65:115002,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 11 figures, LaTeX formatted

Scientific paper

10.1103/PhysRevD.65.115002

We study lepton polarization asymmetries in the (Lambda_b -> Lambda l^+ l^-) decay using the most general model independent effective Hamiltonian. The dependence of the lepton polarizations and their combinations on the new Wilson coefficients are studied in detail. It is observed that there is a region for the new Wilson coefficients for which the branching ratio coincides with the standard model prediction, while lepton polarizations show considerable departure from standard model.

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