Topological studies of light-flavor hadron production in pp, p-Pb, and Pb-Pb collisions with ALICE at the LHC

Abstract

Recent results for high multiplicity pp and p-Pb collisions have revealed that they exhibit heavy-ion-like behaviors. To understand the origin(s) of these unexpected phenomena, event shape observables such as transverse spherocity ($S_0^{p_{\mathrm{T}}=1}$) and the relative transverse activity classifier ($R_{\mathrm{T}}$) can be exploited as a powerful tools to disentangle soft (non-perturbative) and hard (perturbative) particle production. Here, the production of light-flavor hadrons is shown for various $S_0^{p_{\mathrm{T}}=1}$ classes in pp collisions at $\sqrt{s}$ = 13 $\text{TeV}$ measured with the ALICE detector at the LHC are presented. The evolution of average transverse momentum ($⟨p_{\mathrm{T}}⟩$) with charged-particle multiplicity, and identified particle ratios as a function of $p_{\mathrm{T}}$ for different $S_0^{p_{\mathrm{T}}=1}$ are also presented. In addition, the system size dependence of charged-particle production in pp, p-Pb, and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV is presented. The evolution of $⟨p_{\mathrm{T}}⟩$ in different topological regions as a function of $R_{\mathrm{T}}$ are presented. Finally, using the same approach, we present a search for jet quenching behavior in small collision systems.

arXiv commentProceedings of "The 5th International Conference on Particle Physics and Astrophysics", 5-9 October 2020 (Online)

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Cited by in corpus (3)

• Estimation of Impact Parameter and Transverse Spherocity in heavy-ion collisions at the LHC energies using Machine Learning
• Study of Transverse Spherocity and Azimuthal Anisotropy in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV using A Multi-Phase Transport Model
• Investigating Heavy-flavor vs Light-flavor Puzzle with Event Topology and Multiplicity in Proton+Proton Collisions at $\sqrt{s}$ = 13 TeV using PYTHIA8