Abstract
A measurement of the single-spin asymmetry AN in p↑ + p→π0 + X at 200 GeV with xF = 0 shows a transition in the production process from a "low-xT" regime with AN = 0, through an intermediate region of negative asymmetry, to a "high-xT" regime with AN > 0.3. This transition occurs at xT ≈ 0.4 and is consistent with xT-scaling of AN in pion production using polarized beams or targets from √-s=5.2 to 19.4 GeV. Results for AN in η production by polarized protons and in π0 production by polarized antiprotons are also presented.
Original language | English |
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Pages (from-to) | 531-535 |
Number of pages | 5 |
Journal | Physics Letters B |
Volume | 276 |
Issue number | 4 |
DOIs | |
State | Published - Feb 20 1992 |