PoS - Proceedings of Science
Volume 450 - The Eleventh Annual Conference on Large Hadron Collider Physics (LHCP2023) - session Heavy Ion Physics
Hadronisation in event generators from small to large systems
Y. Kanakubo*, Y. Tachibana and T. Hirano
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Pre-published on: January 17, 2024
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The results of the dynamical core-corona initialisation framework in p--p and Pb--Pb collisions at the LHC
energies are presented. We extract the fractions of final hadron yields originating from equilibrated
and non-equilibrated matter as a function of multiplicity. We show that the contribution from non-equilibrated matter is non-negligible even in intermediate and central Pb--Pb collisions. The particle production from non-equilibrated matter behaves as a correction on $c_2\{4\}$ that is purely obtained from the equilibrated matter.
The result poses a warning on Bayesian parameter estimation with conventional hydro models. The observed flow coefficients might need a reinterpretation with new dynamical models which incorporate the particle production from non-equilibrated matter.
DOI: https://doi.org/10.22323/1.450.0131
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