A study of particle ratios and strangeness suppression p$\overline{p}$ collisions at $\sqrt{s}$ = 630 GeV with UA1

From a sample of 2.36 million minimum bias events produced in p{\overline{p}} collisions at \sqrt{s} = 630 GeV in the UA1 experiment and from other published data at the CERN Sp\bar{p}S collider we have estimated the relative production of \pi^\pm, \pi^0, K^\pm K^0_s, \Lambda, \bar{\Lambda}, p and \bar{p}. We obtain a meson over baryon ratio M/B = 6.4\pm1.1. From the K^0_s/\pi^\pm ratio we measure the strangeness suppression factor \lambda=0.29\pm0.02\pm0.01 which, combining with other available data provides a new world average of 0.29 \pm 0.015. Both the K^0_s/\pi^\pm ratio and the strangeness suppression factor \lambda as a function of \sqrt{s} are investigated, and an extrapolation to the LHC energy is performed.