Measurement of Beam-Spin Asymmetries for Deep Inelastic pi{sup +} Electroproduction
Journal Article
·
OSTI ID:807183
We report the first evidence for a non-zero beam-spin azimuthal asymmetry in the electroproduction of positive pions in the deep-inelastic region. Data have been obtained using a polarized electron beam of 4.3 GeV and with the CLAS detector at the Thomas Jefferson National Accelerator Facility (JLab). The amplitude of the sin phi modulation increases with the momentum of the pion relative to the virtual photon, z, with an average amplitude of 0.038+/-0.005+/-0.003 for 0.5<z<0.8 range.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 807183
- Report Number(s):
- JLAB-PHY-02-69; DOE/ER/40150-2420; TRN: US0301755
- Resource Relation:
- Other Information: No journal information given for this preprint; PBD: 1 Dec 2002
- Country of Publication:
- United States
- Language:
- English
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