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The longitudinal polarization of hyperons in the forward region in polarized $pp$ collisions

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 نشر من قبل Qing-hua Xu
 تاريخ النشر 2010
  مجال البحث
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We study the longitudinal polarization of hyperons and anti-hyperons at forward pseudorapidity, $2.5<eta<4$, in singly polarized $pp$ collisions at RHIC energies by using different parameterizations of the polarized parton densities and different models for the polarized fragmentation functions. The results show that the $Sigma^+$ polarization is able to distinguish different pictures on spin transfer in high energy fragmentation processes; and the polarization of $Lambda$ and $barLambda$ hyperons can provide sensitivity to the helicity distribution of strange sea quarks. The influence from beam remnant to hyperon polarization in the forward region is also discussed.



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