Light flavour hadron production in pp collisions at = 13 TeV with ALICE

Raúl Tonatiuh Jiménez Bustamante

doi:10.1088/1742-6596/832/1/012015

Abstract

The ALICE detector has excellent Particle IDentification (PID) capabilities in the central barrel (|η| < 0.9). This allows identified hadron production to be measured over a wide transverse momentum (pT) range, using different sub-detectors and techniques: their specific energy loss (dE/dx), the velocity determination via time-of-flight measurement, the Cherenkov angle or their characteristic weak decay topology. Results on identified light flavour hadron production at mid-rapidity measured by ALICE in proton-proton collisions at = 13 TeV are presented and compared with previous measurements performed at lower energies. The results cover a wide range of particle species including long-lived hadrons, resonances and multi-strange baryons over the pT range from 150 MeV/c up to 20 GeV/c, depending on the particle species.

Highlights

Previous ALICE measurements [1], [2], [3] on identified particles in pp collisions at lower energies show that the models usually give a fair description of the shapes of the pT spectra but fail on the description of the pion, kaon and proton yields
In June 2015, the Large H√adron Collider (LHC) has resumed its physics program with protonproton collisions at s = 13 TeV
The ALICE detector has excellent Particle IDentification (PID) capabilities in the central barrel (|η| < 0.9). This allows identified hadron production to be measured over a wide transverse momentum range, using different sub-detectors and techniques: their specific energy loss, the velocity determination via time-of-flight measurement, the Cherenkov angle or their production at mchida-rraacptiedriitsyticmweaesaukreddebcayyAtLoIpCoEloginy.prRoteosunl-tpsrootnonidceonlltiisfiioendsliagth√t sfla=vo1u3rTheaVdraorne presented and compared with previous measurements performed at lower energies

Summary

Introduction

Previous ALICE measurements [1], [2], [3] on identified particles in pp collisions at lower energies show that the models usually give a fair description of the shapes of the pT spectra but fail on the description of the pion, kaon and proton yields. The combined information of these detectors in different pT regions allows us to measure the particle production in the region starting from 150 MeV/c up to 20 GeV/c. The comparison to PYTHIA 8 [6] (Monash-2013 [7]) for the different energies is shown.

Results

Conclusion