  The LHCb Collaboration has recently observed evidence of CP violation in
neutral D meson decays. CP violation in the charm sector is generically
expected to be very small in the Standard Model, but can be enhanced in many
models of new physics. In this document we will present the results of a search
for time-integrated \CP violation in $D^0 \rightarrow h^- h^+$ with $(h=K,\pi)$
decays, performed with around 0.6 fb$^{-1}$ of data collected by LHCb in 2011.
The difference in CP asymmetry between $D^0 \rightarrow K^- K^+$ and $D^0
\rightarrow \pi^- \pi^+$, $\Delta A_{CP} = A_{CP}(K^- K^+) - A_{CP}(\pi^-
\pi^+)$ is measured to be $\Delta A_{CP} = [-0.82 \pm 0.21 (stat.) \pm 0.11
(syst.)]%$ . This differs from the hypothesis of CP conservation by 3.5 sigma.
