Abstract
The ratio of the yields of antiprotons to protons in pp collisions has been measured by the ALICE experiment at $\sqrt{s} = 0.9$ and $7$~TeV during the initial running periods of the Large Hadron Collider(LHC). The measurement covers the transverse momentum interval $0.45 <p_{\rm{t}} <1.05$~GeV/$c$ and rapidity $|y| <0.5$. The
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