eg1b
- Spokesperson
- H.Avakian
- Year
- 2000
- Abstract
- We report the first measurement of the transverse momentum dependence of double spin asymmetries in semi-inclusive production of pions in deep inelastic scattering off the longitudinally polarized proton. Data have been obtained using a polarized electron beam of 5.7 GeV with the CLAS detector at the Thomas Jefferson National Accelerator Facility (JLab). A significant non-zero sin 2φ single spin asymmetry was also observed for the first time indicating strong spin-orbit correlations for transversely polarized quarks in the longitudinally polarized proton. The azimuthal modulations of single spin asymmetries have been measured over a wide kinematic range.
- Publication
-
- H. Avakian, P. Bosted, V.D. Burkert, L. Elouadrhiri, and CLAS Collaboration Measurement of Single and Double Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target // Phys. Rev. Lett. 105:262002,2010
- Quantities
- A1 AULsin 2φ
Measurements
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| ID | Quantity | Beam | Target | Final state |
Q2min, GeV2 |
Q2max, GeV2 |
Wmin, GeV |
Wmax, GeV |
|---|---|---|---|---|---|---|---|---|
| E44M1 | A1 | e | p | π0+X | 0.0 | 0.0 | None | None |
| E44M2 | A1 | e | p | π0+X | 0.0 | 0.0 | None | None |
| E44M3 | AULsin 2φ | e | p | π0+X | 0.0 | 0.0 | None | None |
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