Analysis of the apparent nuclear modification in peripheral Pb–Pb collisions at 5.02 TeV

Acharya S., Acosta F., Adamová D., Adolfsson J., Aggarwal M., Aglieri Rinella G., ...More

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol.793, pp.420-432, 2019 (SCI-Expanded) identifier identifier


Charged-particle spectra at midrapidity are measured in Pb–Pb collisions at the centre-of-mass energy per nucleon–nucleon pair s NN =5.02 TeV and presented in centrality classes ranging from most central (0–5%) to most peripheral (95–100%) collisions. Possible medium effects are quantified using the nuclear modification factor (R AA ) by comparing the measured spectra with those from proton–proton collisions, scaled by the number of independent nucleon–nucleon collisions obtained from a Glauber model. At large transverse momenta (8