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Analyzing power in inclusive π+ and π− production at high xF with a 200 GeV polarized proton beam
Journal article   Peer reviewed

Analyzing power in inclusive π+ and π− production at high xF with a 200 GeV polarized proton beam

D.L Adams, N Akchurin, N.I Belikov, B.E Bonner, J.A Buchanan, J Bystricky, J.M Clement, M.D Corcoran, J.D Cossairt, J Cranshaw, …
Physics letters. B, Vol.264(3), pp.462-466
1991
DOI: 10.1016/0370-2693(91)90378-4

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Abstract

The analyzing power in inclusive charged pion production has been measured using the 200 GeV Fermilab polarized proton beam. A striking dependence in xF is observed in which AN increases from 0 to 0.42 with increasing xF for the π+ data and decreases from 0 to −0.38 with increasing xF for π− data. The kinematic range covered is 0.2⩽xF⩽0.9 and 0.2⩽pT⩽2.0 GeV/c. In a simple model our data indicate that at large xF the transverse spin of the proton is correlated with that of its quark constituents.

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