(Anti-)nuclei production and flow in pp, p--Pb and Pb--Pb collisions with ALICE

Abstract

High energy pp, p--Pb, and Pb--Pb collisions at the LHC offer a unique opportunity to study the production of light (anti-)nuclei. The study of the production yield of (anti-)nuclei in heavy-ion collisions at LHC energies probes the late stages in the evolution of the hot, dense nuclear matter created in the collision. Measurements performed in smaller collision systems are crucial to understand how the production mechanism evolves going from small to large systems. The results on the determination of the (anti-)nuclei yields will be complemented by the measurement of their azimuthal anisotropic production. This is a powerful tool to gain insight into the production mechanism of light nuclei in relativistic ion collisions: in particular, it will help to distinguish between coalescence and hydrodynamic models. The coalescence parameter and the nuclei-to-proton ratio is studied as a function of the system size, showing a smooth transition from low to high values of the charged-particle multiplicity density. The experimental results can be described with the canonical statistical hadronization model as well as the coalescence approach within uncertainties. The theoretical description of the new results on the measurement of the elliptic and the triangular flow of deuterons and ${}^3$He produced in Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV requires more sophisticated coalescence and statistical hadronization models.

arXiv comment6 pages, 3 figures, proceeding of EPS-HEP 2019 conference, 10-17 July, 2019, Ghent, Belgium

References in corpus (12)

• Thermal phenomenology of hadrons from 200 AGeV S+S collisions
• Coalescence and flow in ultra-relativistic heavy ion collisions
• Production of light nuclei and anti-nuclei in pp and Pb-Pb collisions at LHC energies
• Particle Production in Heavy Ion Collisions
• Production of deuterons, tritons, ${}^3$He nuclei and their anti-nuclei in pp collisions at $\sqrt{\text{s}}$ = 0.9, 2.76 and 7 TeV
• Suppression of light nuclei production in collisions of small systems at the Large Hadron Collider
• Canonical statistical model analysis of p-p, p-Pb, and Pb-Pb collisions at the LHC
• Multiplicity dependence of light nuclei production at LHC energies in the canonical statistical model
• Testing coalescence and statistical-thermal production scenarios for (anti-)(hyper-)nuclei and exotic QCD objects at energies available at the CERN Large Hadron Collider
• Spectra and flow of light nuclei in relativistic heavy ion collisions at RHIC and the LHC
• Multiplicity dependence of (anti-)deuteron production in pp collisions at $\sqrt{s}$ = 7 TeV
• Multiplicity dependence of light (anti-)nuclei production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV