Spectra of identified charged hadrons at sqrt(s) = 0.9, 2.76 and 7 TeV via tracker energy loss

Measured spectra of identified charged hadrons produced in pp collisions at $\sqrt{s} =$ 0.9, 2.76 and 7 TeV are presented in the transverse momentum range $\pt \approx$ 0.1--1.7~\GeVc at midrapidity ($|y|<1$). % The charged pions, kaons, and protons are identified using the measured energy loss in the silicon tracks and the calculated goodness-of-fit value of the reconstructed track. % The fully corrected primary \pt spectra and integrated yields are compared to various tunes of the {\PYTHIA}6 and {\PYTHIA}8 event generators. The average \pt for pions, kaons and protons increases rapidly with the mass of the hadron and with the event charged-particle multiplicity. This increase does not seem to depend on the center-of-mass energy. The average \pt of protons, as a function of $\sqrt{s}$ and multiplicity, is not reproduced by the models.