Strange particle production in proton–proton collisions at with ALICE at the LHC
K. Aamodt, A. Abrahantes Quintana, D. Adamová, A. M. Adare, M. M. Aggarwal, G. Aglieri Rinella, A. G. Agocs, S. Aguilar Salazar, Z. Ahammed, N. Ahmad, A. Ahmad Masoodi, S. U. Ahnhttp://academic.research.microsoft.com/io.ashx?type=5&id=48244007&selfId1=0&selfId2=0&maxNumber=12&query=
The production of mesons containing strange quarks (, φ) and both singly and doubly strange baryons (, , and ) are measured at mid-rapidity in pp collisions at = 0.9 with the ALICE experiment at the LHC. The results are obtained from the analysis of about 250 k minimum bias events recorded
in 2009. Measurements of yields (dN/dy) and transverse momentum spectra at mid-rapidity for inelastic pp collisions are presented. For mesons, we report yields
(〈dN/dy〉) of 0.184±0.002(stat.)±0.006(syst.) for and 0.021±0.004(stat.)±0.003(syst.) for φ. For baryons, we find 〈dN/dy〉=0.048±0.001(stat.)±0.004(syst.) for , 0.047±0.002(stat.)±0.005(syst.) for and 0.0101±0.0020(stat.)±0.0009(syst.) for . The results are also compared with predictions for identified particle spectra from QCD-inspired models and provide a baseline
for comparisons with both future pp measurements at higher energies and heavy-ion collisions.