The sensitivity of the zero position of the forward--backward asymmetry to new physics effects in the B -> K^\ast μ^+ μ^- decay

Details The sensitivity of the zero position of the forward--backward asymmetry to new physics effects in the B -> K^\ast μ^+ μ^- decay The sensitivity of the zero position of the forward--backward asymmetry to new physics effects in the B -> K^\ast μ^+ μ^- decay

2002-09-12

arxiv.org/abs/hep-ph/0209133v1

Phys.Rev.D66:075012,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pp, 6 ps figs

Scientific paper

10.1103/PhysRevD.66.075012

Starting with the most general effective Hamiltonian comprising scalar and vector operators beyond the standard model, we discuss the impact of various operators on the zero of the forward--backward asymmetry in the dileptonic B decay B -> K^\ast \mu^+ \mu^-. We find that, zero of the asymmetry is highly sensitive to the sign and size of the vector--vector operators and opposite chirality counterparts of the usual operators. The scalar--scalar four--fermion operators, on the other hand, have mild effect on the zero of the asymmetry. Our results are expected to be checked in the near future experiments.

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