Chiral-odd fragmentation functions in single pion inclusive electroproduction

Leonard P. Gamberg, Dae Sung Hwang, Karo A. Oganessyan

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

We consider a sub-leading twist chiral-odd pion fragmentation function and explore its contribution in single pion semi-inclusive electroproduction. We evaluate the single beam-spin azimuthal asymmetry ALU and the double spin asymmetry ALT in polarized electroproduction of pions from an unpolarized and transversely polarized nucleon, respectively. The beam asymmetry is expressed as the product of chiral-odd, and T-odd and even distribution and fragmentation functions. The double spin asymmetry contains information on the quark's transversity distribution. In a quark-diquark- spectator framework we estimate these asymmetries at 6 GeV, 12 GeV, and 27.5 GeV energies.

Original languageEnglish (US)
Pages (from-to)276-284
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume584
Issue number3-4
DOIs
StatePublished - Apr 1 2004

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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