$b\to s\mathrm{\ell }\mathrm{\ell }$ decays at LHCb

Flavour changing neutral currents are suppressed in the Standard Model, making them a prime avenue to search for new physics. Although several measurements of the decay $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ have shown deviations from the Standard Model expectations, long-distance contributions may be imitating new physics. Here, the first amplitude analysis of $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ is carried out to try and discern such effects.