Collins Effect from Polarized SIDIS and e+e- Data

Journal Article · Wed Jun 13 04:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2750849· OSTI ID:21063986

Prokudin, A; Tuerk, C ^[1]

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1. Dipartimento di Fisica Teorica, Universita di Torino, Via P. Giuria 1, I-10125 Torino (Italy)

The recent data on the transverse single spin asymmetry A{sub UT}{sup sin({phi}{sub h}+{phi}{sub S})} from HERMES and COMPASS Collaborations are analysed within LO parton model with unintegrated parton distribution and fragmentation functions. A fit of SIDIS data from HERMES Collaboration is performed leading to the extraction of favoured and unfavoured Collins fragmentation functions. A very good description of COMPASS data is obtained. BELLE e+e- data are shown to be compatible with our estimates based on the extracted Collins fragmentation functions. Predictions for A{sub UT}{sup sin({phi}{sub h}+{phi}{sub S})} asymmetries at JLab and COMPASS operating on a proton target are given.

• OSTI ID: 21063986
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 915; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
CEBAF ACCELERATOR
DEEP INELASTIC SCATTERING
DISTRIBUTION
ELECTRON-POSITRON INTERACTIONS
FUNCTIONS
GLUONS
HYDROGEN 1 TARGET
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PARTICLE STRUCTURE
POLARIZATION
PROTONS
QUARKS
SEMI-INCLUSIVE INTERACTIONS
SPIN