Longitudinal polarization of hyperon and anti-hyperon in semi-inclusive deep-inelastic scattering

Details Longitudinal polarization of hyperon and anti-hyperon in semi-inclusive deep-inelastic scattering Longitudinal polarization of hyperon and anti-hyperon in semi-inclusive deep-inelastic scattering

2009-02-11

arxiv.org/abs/0902.1883v1

Phys.Rev.D79:094018,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

35 pages, 16 figures

Scientific paper

10.1103/PhysRevD.79.094018

We make a detailed study of the longitudinal polarization of hyperons and anti-hyperons in semi-inclusive deep-inelastic lepton-nucleon scattering. We present the numerical results for spin transfer in quark fragmentation processes, analyze the possible origins for a difference between the polarization for hyperon and that for the corresponding anti-hyperon. We present the results obtained in the case that there is no asymmetry between sea and anti-sea distribution in nucleon as well as those obtained when such an asymmetry is taken into account. We compare the results with the available data such as those from COMPASS and make predictions for future experiments including those at even higher energies such as at eRHIC.

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