Probing for New Physics with $b\to s\ell^+\ell^-$ Transitions at LHCb

The analysis of $b\to s\ell^+\ell^-$ flavor-changing neutral currents (FCNC) is a powerful test of the Standard Model (SM). As these decay modes are highly suppressed in the SM, potential New Physics (NP) contributions can have a significant impact on measured observables. In recent years, experimental measurements of different observables in this sector displayed intriguing tensions with SM theory predictions and sparked a collective effort to investigate their potential origin from the experimental and theoretical sides. Measurements of branching fractions and angular observables from $B^{+}\to K^{+}\ell^+\ell^-$, $B^{0}\to K^{*0}\ell^+\ell^-$, $B^{+}\to K^{*+}\ell^+\ell^-$ and $B_s^0\to \phi(1020)\ell^+\ell^-$ decays conducted by the LHCb collaboration consistently indicate a shift of the Wilson Coefficient (WC) $\mathcal{R}e(C_9)$ of approximately $\Delta\mathcal{R}e(C_9)\approx-1$. Tests of lepton flavor universality (LFU), on the other hand, found branching fraction ratios of $b\to s e^+e^-$ and $b\to s \mu^+\mu^-$ decay modes to be consistent with the LFU hypothesis. These proceedings present the latest results of angular analyses of the decay modes $B^{0}\to K^{*0}e^+e^-$ and $B_s\to \phi(1020)e^+e^-$, as well as the analysis of local and nonlocal amplitudes in the $B^{0}\to K^{*0}\mu^+\mu^-$ decay mode using the Run~1 and Run~2 LHCb data samples.