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dc.contributor.authorBoros, C.-
dc.contributor.authorLondergan, J.-
dc.contributor.authorThomas, A.-
dc.identifier.citationPhysical Review D: Particles, Fields, Gravitation and Cosmology, 1999; 61(1):014007--
dc.description.abstractWe discuss the quark parton structure of the Λ baryon and the fragmentation of quarks into Λ baryons. We show that the hyperfine interaction, responsible for the Δ-N and Σ0-Λ mass splittings, leads not only to sizable SU(3) and SU(6) symmetry breaking in the quark distributions of the Λ, but also to significant polarized non-strange quark distributions. The same arguments suggest flavor asymmetric quark fragmentation functions and non-zero polarized non-strange quark fragmentation functions. The calculated fragmentation functions give a good description of all measured observables. We predict significant positive Λ polarization in semi-inclusive DIS experiments while models based on SU(3) flavor symmetry predict zero or negative Λ polarization. Our approach also provides a natural explanation for the dependence of the maximum of the ξ=ln(1/z) spectrum on the mass of the particles produced in e+e- annihilation.-
dc.description.statementofresponsibilityC. Boros, J. T. Londergan, A. W. Thomas-
dc.publisherAmerican Physical Society-
dc.rights©1999 American Physical Society-
dc.titleStructure and production of lambda baryons-
dc.typeJournal article-
dc.identifier.orcidThomas, A. [0000-0003-0026-499X]-
Appears in Collections:Aurora harvest 2
Special Research Centre for the Subatomic Structure of Matter publications

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