Double-lepton polarization asymmetries in Lambda_b -> Lambda l^+ l^- decay

Details Double-lepton polarization asymmetries in Lambda_b -> Lambda l^+ l^- decay Double-lepton polarization asymmetries in Lambda_b -> Lambda l^+ l^- decay

2004-09-23

arxiv.org/abs/hep-ph/0409275v1

Eur.Phys.J. C38 (2004) 283-295

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages, 12 figures, LaTeX formatted

Scientific paper

10.1140/epjc/s2004-02045-6

Double-lepton polarization asymmetries in (Lambda_b -> Lambda l^+ l^-) decay are calculated using a general, model independent form of the effective Hamiltonian. The sensitivities of these asymmetries to the new Wilson coefficients are studied in detail. Furthermore, the correlations between averaged double-lepton polarization asymmetry and branching ratio are analyzed. It is shown that there exist certain regions of the new Wilson coefficients where new physics can be established by measuring the double-lepton polarization asymmetries only.

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