Speaker
Description
It is well-established that high-multiplicity pp and p–Pb collisions exhibit a collective-like behaviour and signatures, like the strangeness enhancement and the ridge behaviors, that were commonly attributed to the formation of the Quark-Gluon Plasma. In this contribution, we investigate the possible similarities between pp, p–A and A–A collisions by studying the charged-particle production as a function of the underlying event classifier ($R_{\rm T}$). We perform a comprehensive study of the $R_{\rm T}$ dependence of charged-particle production in the momentum range of $0.5<p_{\rm T}<8$ GeV/$c$ for pp, p-Pb and Pb-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV. The $p_{\rm T}$ spectra, integrated yields and $\langle p_{\rm T} \rangle$ in the near, away and transverse regions will be presented as a function of $R_{\rm T}$. The role of auto-correlations and the potential effects of multi-parton interactions (MPI) in p-Pb and Pb-Pb collisions will also be discussed. The results will be compared with the existing predictions from event generators such as PYTHIA and EPOS-LHC.
| In-person participation | Yes |
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