Lambda polarization from unpolarized quark fragmentation

M Anselmino*, D Boer, U D'Alesio, F Murgia

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The long-standing problem of explaining the observed polarization of Lambda hyperons, inclusively produced in the high-energy collisions of unpolarized hadrons, is tackled by considering spin- and k(perpendicular to)-dependent quark-fragmentation functions. The data on Lambda 's and )over bar>'s produced in p-N processes are used to determine simple phenomenological expressions for these new "polarizing fragmentation functions," which describe the experiments remarkably well.

Original languageEnglish
Article number054029
Number of pages9
JournalPhysical Review D
Volume63
Issue number5
Publication statusPublished - 1-Mar-2001
Externally publishedYes

Keywords

  • SINGLE-SPIN ASYMMETRIES
  • INCLUSIVE PION-PRODUCTION
  • HYPERON POLARIZATION
  • HARD-SCATTERING
  • LAMBDA
  • PROTONS
  • MODEL
  • LEPTOPRODUCTION
  • DISTRIBUTIONS
  • COLLISIONS

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