Transversity and Collins functions from SIDIS and e+e- data

M. Anselmino, M. Boglione, U. D'Alesio, A. Kotzinian, F. Murgia, A. Prokudin, C. Türk

Research output: Contribution to journalArticle

332 Citations (Scopus)

Abstract

A global analysis of the experimental data on azimuthal asymmetries in semi-inclusive deep inelastic scattering (SIDIS), from the HERMES and COMPASS Collaborations, and in e+e-→h1h2X processes, from the Belle Collaboration, is performed. It results in the extraction of the Collins fragmentation function and, for the first time, of the transversity distribution function for u and d quarks. These turn out to have opposite signs and to be sizably smaller than their positivity bounds. Predictions for the azimuthal asymmetry AUTsin(S+h), as will soon be measured at JLab and COMPASS operating on a transversely polarized proton target, are then presented.

Original languageEnglish (US)
Article number054032
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume75
Issue number5
DOIs
StatePublished - Mar 30 2007

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COMPASS (programming language)
inelastic scattering
asymmetry
fragmentation
distribution functions
quarks
protons
predictions

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Anselmino, M. ; Boglione, M. ; D'Alesio, U. ; Kotzinian, A. ; Murgia, F. ; Prokudin, A. ; Türk, C. / Transversity and Collins functions from SIDIS and e+e- data. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2007 ; Vol. 75, No. 5.
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Transversity and Collins functions from SIDIS and e+e- data. / Anselmino, M.; Boglione, M.; D'Alesio, U.; Kotzinian, A.; Murgia, F.; Prokudin, A.; Türk, C.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 75, No. 5, 054032, 30.03.2007.

Research output: Contribution to journalArticle

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