  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.
