Studies of 3D structure of the nucleon with CLAS at JLab

Journal Article · Wed Dec 14 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3667307· OSTI ID:22004008

Aghasyan, Mher ^[1]

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1. INFN, Laboratori Nazionali di Frascati, 00044 Frascati (Italy)

Studies of single-spin asymmetries in pions electroproduction in semi-inclusive deep-inelastic scattering of 5.776 GeV polarized electrons from an unpolarized and polarized targets, using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility, are presented. A substantial sin {phi}{sub h} amplitude has been measured in the the cross section as a function of the azimuthal angle {phi}{sub h} of the produced neutral pion. The dependence of this amplitude on Bjorken x and on the pion transverse momentum has been extracted with significantly higher precision than previous data and is compared to model calculations.

• OSTI ID: 22004008
• Journal Information: AIP Conference Proceedings, Vol. 1418, Issue 1; Conference: PacSPIN2011: 8. Circum-Pan-Pacific symposium on high energy spin physics, Cairns, QLD (Australia), 20-24 Jun 2011; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
ASYMMETRY
CEBAF ACCELERATOR
CROSS SECTIONS
DEEP INELASTIC SCATTERING
ELECTRON-NUCLEON INTERACTIONS
ELECTRONS
ELECTROPRODUCTION
GEV RANGE
NUCLEONS
PARTICLE STRUCTURE
PIONS NEUTRAL
POLARIZED BEAMS
POLARIZED TARGETS
QUARK MODEL
SEMI-INCLUSIVE INTERACTIONS
SPIN
TRANSVERSE MOMENTUM