Pseudorapidity and transverse-momentum distributions of charged particles in proton–proton collisions at s=13 TeV

Abstract

The pseudorapidity (η ) and transverse-momentum (pTpT) distributions of charged particles produced in proton–proton collisions are measured at the centre-of-mass energy View the MathML sources=13 TeV. The pseudorapidity distribution in |η|<1.8|η|<1.8 is reported for inelastic events and for events with at least one charged particle in |η|<1|η|<1. The pseudorapidity density of charged particles produced in the pseudorapidity region |η|<0.5|η|<0.5 is 5.31±0.185.31±0.18 and 6.46±0.196.46±0.19 for the two event classes, respectively. The transverse-momentum distribution of charged particles is measured in the range 0.15<pT<20 GeV/c0.15<pT<20 GeV/c and |η|<0.8|η|<0.8 for events with at least one charged particle in |η|<1|η|<1. The evolution of the transverse momentum spectra of charged particles is also investigated as a function of event multiplicity. The results are compared with calculations from PYTHIA and EPOS Monte Carlo generators.