Chiral-odd fragmentation functions in single pion inclusive electroproduction

Leonard Gamberg, Dae Sung Hwang, Karo A. Oganessyan

Research output: Contribution to journalArticle

25 Citations (Scopus)

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

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fragmentation
pions
asymmetry
arithmetic and logic units
quarks
distribution functions
estimates
products
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

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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.",
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Chiral-odd fragmentation functions in single pion inclusive electroproduction. / Gamberg, Leonard; Hwang, Dae Sung; Oganessyan, Karo A.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 584, No. 3-4, 01.04.2004, p. 276-284.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Gamberg, Leonard

AU - Hwang, Dae Sung

AU - Oganessyan, Karo A.

PY - 2004/4/1

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N2 - 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.

AB - 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.

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