$b\to s\ell\ell$ Global Fits after $R_{K_S}$ and $R_{K^{*+}}$

Understand

We present an up-to-date complete model-independent global fit to $b\to s\ell^+\ell^-$ observables that confirms patterns of New Physics able to explain the data.

• We include the recent LHCb measurements of $R_K$, $R_{K_S}$, $R_{K^{*+}}$, $B_s \to \phi\mu^+\mu^-$ and $B_s\to\mu\mu$ in our analysis, which now includes 254 observables.
• This updates our previous analyses and strengthens their two main outcomes.
• First, the presence of right-handed couplings encoded in the Wilson coefficients $\mathcal{C}_{9'\mu}$ and $\mathcal{C}_{10'\mu}$ remains a viable possibility.