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Two-component source to explain $Lambda$ and $bar{Lambda}$ global polarization in non-central heavy-ion collisions

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 نشر من قبل Ivonne Alicia Maldonado Cervantes
 تاريخ النشر 2020
  مجال البحث
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 تأليف A. Ayala




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The STAR Beam Energy Scan program has found a difference in the global polarization of $Lambda$s and $bar{Lambda}$s produced in $Au+Au$ collisions. This difference is larger for lower center of mass collision energies. In this work we show that a two-component source, consisting of a high density core and a lower density corona, can describe quantitatively the $Lambda$ and $bar{Lambda}$ polarization as a function of collision energy.



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