Measurement of prompt $\overline{\Lambda}/\Lambda$ and $\overline{\Lambda}/\rm{K}^{\rm{0}}_{\rm{S}}$ production ratios in inelastic non-diffractive pp collisions at $\sqrt{s}$ = 0.9 and 7 TeV

We present measurements of the production cross-section ratios $\overline{\Lambda}/\Lambda$ and $\overline{\Lambda}/\rm{K}^{\rm{0}}_{\rm{S}}$ obtained with the LHCb detector at CERN in the forward rapidity region 2 < $y$ < 4. Complementary results are found with LHC $pp$ collisions at $\sqrt{s}$ = 0.9 TeV and 7 TeV and integrated luminosities of 0.31 nb$^{-1}$ and 0.2 nb$^{-1}$ respectively. These results are compared to simulation using LHC standard event generators.