Λ and Λ¯ global polarization from the core-corona model
DOI:
https://doi.org/10.31349/SuplRevMexFis.3.040914Keywords:
hyperon, polarization, core, coronaAbstract
We report on work aimed to describe the Λ and Λ¯ global polarizations in a heavy-ion collision environment using the core-corona model, where the source of these hyperons is a high-density core and a less dense corona. We show that the overall properties of the polarization excitation functions can be linked to the relative abundance of Λs and Λ¯s coming from the core versus those coming from the corona. Both global polarizations peak at collision energies √ sNN . 10 GeV. The exact positions and heights of these peaks depend not only on a reversal of relative abundances with collision energy, but also on the centrality class, both related to the QGP volume and lifetime.
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Copyright (c) 2022 Alejandro Ayala, I. Domínguez, I. Maldonado, M. E. Tejeda-Yeomans (Author)
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