A Systematic Analysis of the Exclusive B -> K^* l^+ l^- Decay

Details A Systematic Analysis of the Exclusive B -> K^* l^+ l^- Decay A Systematic Analysis of the Exclusive B -> K^* l^+ l^- Decay

1999-10-27

arxiv.org/abs/hep-ph/9910501v3

Phys.Rev.D62:014026,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

To be published in PRD (2000)

Scientific paper

10.1103/PhysRevD.62.014026

A model-independent analysis for the exclusive, rare B -> K^* l^+ l^- decay is presented. Systematically studied are the experimentally measured quantities, such as, branching ratio, forward-backward asymmetry, longitudinal polarization of the final leptons, and the ratio $\Gamma_L/\Gamma_T$ of the decay widths when $K^\ast$ meson is longitudinally and transversally polarized. The dependence of the asymmetry parameter $\alpha = 2 \Gamma_L/\Gamma_T -1$ on the new Wilson coefficients is also studied in detail. It is found that the afore-mentioned physical observables are quite sensitive to the new Wilson coefficients. Therefore, once we have the experimental data with high statistics and a deviation from the Standard Model, we can interpret the source of such discrepancy.

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