On the standard model predictions for $$R_K$$RK and $$R_{K^*}$$RK∗
By M. Bordone, G. Isidori, Andrea Pattori. 2016
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We evaluate the impact of radiative corrections in the ratios $$\Gamma [B\rightarrow M \mu ^+\mu ^-]/\Gamma [B\rightarrow M \mathrm{e}^+\mathrm{e}^-]$$Γ[B→Mμ+μ-]/Γ[B→Me+e-] when the meson M is a K or a $$K^*$$K∗. Employing the cuts on $$m^2_{\ell \ell }$$mℓℓ2 and the reconstructed B-meson mass presently applied by the LHCb Collaboration, such corrections do not exceed a few $$\%$$%. Moreover, their effect is well described (and corrected for) by existing Monte Carlo codes. Our analysis reinforces the interest of these observables as clean probe of physics beyond the Standard Model.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/b50160360a8211a4cf5bea7d1052262f798842c9
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Citations in the corpus
- Physics case for an LHCb Upgrade II - Opportunities in flavour physics, and beyond, in the HL-LHC era (2018, background): “The uncertainties from QED corrections are found to be at the percent level [348].”
- B-decay discrepancies after Moriond 2019 (2019, background): “Here the theoretical uncertainties are negligible [14] and the sensitivity is only limited by statistics at present.”