EG2000 CLAS
- Spokesperson
- H. Avakian
- Year
- 2000
- Abstract
- We report the first evidence for a non-zero beam-spin azimuthal asymmetry in the electropro- duction of positive pions in the deep-inelastic region. Data have been obtained using a polarized electron beam of 4.3 GeV with the CLAS detector at the Thomas Jefferson National Accelerator Facility (JLab). The amplitude of the sin modulation increases with the momentumof 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.
- Publication
-
- H. Avakian, V. D. Burkert, L. Elouadrhiri, and CLAS Collaboration Measurement of Beam-Spin Asymmetries for Deep Inelastic pi+ Electroproduction // hep-ex/0301005
- Quantities
- A1p AUL
Measurements
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| ID | Quantity | Beam | Target | Final state |
Q2min, GeV2 |
Q2max, GeV2 |
Wmin, GeV |
Wmax, GeV |
|---|---|---|---|---|---|---|---|---|
| E3M1 | A1p | e | p | π + X | 2.0 | 2.0 | None | None |
| E3M2 | AUL | e | p | π + X | 2.0 | 2.0 | None | None |
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