Λ and Λ¯ global polarization from the core-corona model

Authors

  • Alejandro Ayala ICN-UNAM
  • I. Domínguez Universidad Autónoma de Sinaloa
  • I. Maldonado Joint Institute for Nuclear Research
  • M. E. Tejeda-Yeomans Universidad de Colima

DOI:

https://doi.org/10.31349/SuplRevMexFis.3.040914

Keywords:

hyperon, polarization, core, corona

Abstract

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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Published

2022-12-10

How to Cite

1.
Ayala A, Domínguez I, Maldonado I, Tejeda-Yeomans ME. Λ and Λ¯ global polarization from the core-corona model. Supl. Rev. Mex. Fis. [Internet]. 2022 Dec. 10 [cited 2023 Feb. 6];3(4):040914 1-5. Available from: https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/6835