Lepton asymmetries in exclusive b→sℓ+ℓ− decays as a test of the standard model

1998/03/13 by Dmitri Melikhov, D. Melikhov, N. Nikitin +2 · 1 citation
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/s0370-2693(98)00524-3

published as Phys.Lett. B430 (1998) 332-340 · revtex, 9 pages, 5 figures

arxiv created 1998/03/13 · openalex publication_date 1998/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We argue that the longitudinal lepton polarization and the forward-backward asymmetries in exclusive B→ (K,K^*)ℓ⁺ℓ^- decays are largely unaffected by the theoretical uncertainties in the long-distance contributions both induced by the long-range charming penguins in the ℓ⁺ℓ^- channel and those in the meson channels encoded in the meson transition form factors, and are mainly determined by the short-distance Wilson coefficients at the low-energy scale μ≃ m_b. Thus, the above mentioned asymmetries provide a powerful probe of the Standard Model and its extensions.

Citations

• Effects of Superheavy Quarks and Leptons in Low-Energy Weak Processes KL-> Formula, K+-> + Formula and K0 Formula0

Cited by

• Long distance contributions inB→K*l+l−decays with polarizedK*