First measurement of unpolarized semi-inclusive deep-inelastic scattering cross sections from a He-3 target
Yan, X. Averett, Todd Katich, J. Kelleher, A. Zhao, B.
Yan, X.
Averett, Todd
Katich, J.
Kelleher, A.
Zhao, B.
Abstract
The unpolarized semi-inclusive deep-inelastic scattering (SIDIS) differential cross sections in He-3(e, e'pi') X have been measured for the first time in Jefferson Lab experiment E06-010 with a 5.9 GeV e(-) beam on a He-3 gas target. The experiment focuses on the valence quark region, covering a kinematic range 0.12 < x(bj) < 0.45, 1 < Q(2) < 4 (GeV/c)(2), 0.45 < z(h) < 0.65, and 0.05 < P-t < 0.55 GeV/c. The extracted SIDIS differential cross sections of pi(+/-) production are compared with existing phenomenological models while the He-3 nucleus approximated as two protons and one neutron in a plane-wave picture, in multidimensional bins. Within the experimental uncertainties, the azimuthal modulations of the cross sections are found to be consistent with zero.
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2017-03-24
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Physics
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https://doi.org/10.1103/PhysRevC.95.035209