A Planned Jefferson Lab Experiment on Spin-flavor Decomposition
نویسنده
چکیده
Experiment E04-113 at Jefferson Lab Hall C plans to measure the beam-target double-spin asymmetries in semi-inclusive deep-inelastic ~ p(e, eh)X and ~ d(e, eh)X reactions (h = π, π,K orK) with a 6 GeV polarized electron beam and longitudinally polarized NH3 and LiD targets. The high statistic data will allow a spin-flavor decomposition in the region of x = 0.12 ∼ 0.41 at Q = 1.21 ∼ 3.14 GeV. Especially, leading order and next-to-leading order spin-flavor decomposition of ∆uv, ∆dv and ∆ū−∆d̄ will be extracted based on the measurement of the combined asymmetries A + −π −
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