Charm rescattering in $B^0\to K^0\bar{\ell }\ell$: an improved analysis

Abstract

We improve upon previous explicit estimates of charm rescattering contributions to the decay $B^0\to K^0\bar{\ell }\ell$ by including contributions from dipole interactions with the intermediate charm-meson states, and by further investigating the structure of the electromagnetic form factors. Using a model of fundamental meson fields inspired by heavy-hadron chiral perturbation theory, augmented by form factors motivated by theoretical considerations as well as experimental data, we provide a thorough investigation of rescattering contributions induced by intermediate $D^{(\ast )}{D}_s^{(\ast )}$ states.

9 pages, 3 figures. Minor edits (published version)

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Cited by in corpus (5)

• ${\Xi }_b\to \Xi$ form factors from lattice QCD and Standard-Model predictions for ${\Xi }_b\to \Xi {\mu }^{+}{\mu }^{-}$ and ${\Xi }_b\to \Xi \gamma$ decays
• Constraints on lepton-flavor mixing with third-generation new physics
• Probing Lepton Flavour Universality with ${\Lambda }_b$ decays to ${\tau }^{+}{\tau }^{-}$ final states
• TeV-scale scalar leptoquarks motivated by B anomalies improve Yukawa unification in SO(10) GUT
• Dispersive Analysis of $D$- and $B$-Meson Form Factors with Chiral and Heavy-Quark Constraints