Measurement of π, K, p transverse momentum spectra with ALICE in proton–proton collisions at 0.9 and 7 TeV

Abstract

Results of the measurement of the π, K, p transverse momentum (pt) spectra at mid-rapidity in proton–proton collisions at TeV are presented. Particle identification was performed using the energy loss signal in the inner tracking system and the time projection chamber, while information from the time-of-flight detector was used to identify particles at higher transverse momentum. From the spectra at TeV, the mean transverse momentum (⟨pt⟩) and particle ratios were extracted and compared to results obtained for collisions at TeV and lower energies.