Speaker
Description
We study the particle production at high transverse momentum (pT>8 GeV/c) in pp and Pb-Pb collisions at LHC energies. The characterization of the spectra is done using a power-law function and the resulting power-law exponent (n) is studied as a function ofxTfor minimum-biasppcollisions at different√s. The functional form of n as a function of xT exhibits an approximate universal behavior. PYTHIA8.212 reproduces the scaling properties and therefore, it is used to study the multiplicity-dependent particle production.Going from low to high multiplicities, the power-law exponent decreases. A similar behavior is also observed in heavy-ion collisions when one studies the centrality-dependent particle production. The interpretation of heavy-ion results requires the quantification of the impact of this correlation (multiplicity and highpT) on jet-quenching observables.
