Production of K∗(892)0 and ϕ(1020) in pp collisions at $\sqrt{s}=7\ \mathrm{TeV}$

The production of K∗(892)0 and ϕ(1020) in pp collisions at \(\sqrt{s}=7~\mathrm{TeV}\) was measured by the ALICE experiment at the LHC. The yields and the transverse momentum spectra d2 N/dydp T at midrapidity |y|<0.5 in the range 0

overline{\Omega })/\phi\) are presented. The values of the K∗/K−, ϕ/K∗ and ϕ/K− ratios are similar to those found at lower centre-of-mass energies. In contrast, the ϕ/π − ratio, which has been observed to increase with energy, seems to saturate above 200 GeV. The \((\Omega + \overline {\Omega })/\phi\) ratio in the p T range 1–5 GeV/c is found to be in good agreement with the prediction of the \(\mathrm{HIJING}/\mathrm{B}\overline{\mathrm{B}}\) v2.0 model with a strong colour field.