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

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

Feb, 2010

4 pages

Published in:

Phys.Rev.D 81 (2010) 057501

e-Print:

1002.2468 [hep-ph]

DOI:

10.1103/PhysRevD.81.057501

View in:

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Abstract: (arXiv)

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

\bar\Lambda

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.

13.88.+e
13.85.Ni
13.87.Fh
p p: interaction
p: polarized beam
hyperon: polarization
polarization: longitudinal
parton: density
quark: sea
fragmentation function: polarization

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Figures(5)

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