$\overline{p}/p$ measurement at LHCb

Preliminary measurements are performed of $\bar{p}/p$, the ratio of the yields of antiprotons to protons in $pp$ collisions, at $\sqrt{s} = 900$\,GeV and 7\,TeV, as a function of pseudorapidity, $\eta$, rapidity, $y$, and transverse momentum, $p_{T}$. When compared to generator expectations, some differences are found at the lower energy point. The results are presented in terms of rapidity loss, $\Delta y$. Compatibility with previous measurements is observed, together with an indication of $p_{T}$ dependence.