Analyzing-Power Measurement in Inclusive<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Production at High<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>x</mml:mi></mml:mrow><mml:mrow><mml:mi>F</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>

198831 citationsJournal Article

Authors

B. E. Bonner · Rice University

J.A. Buchanan · Rice University

David C. Carey · Fermi National Accelerator Laboratory

J.M. Clement · Rice University

R. Coleman · Fermi National Accelerator Laboratory

M. Corcoran · Rice University

J.D. Cossairt ·

Abstract

The analyzing power ${A}_{N}$ in inclusive ${\ensuremath{\pi}}^{0}$ production has been measured with use of the new 185-GeV/c Fermilab polarized proton beam. We obtain the value ${A}_{N}=0.10\ifmmode\pm\else\textpm\fi{}0.03$ for ${\ensuremath{\pi}}^{0}'s$ in the kinematic region $0.2<{x}_{F}<0.8$ and $0.3<{p}_{T}<1.2$ GeV/c. In certain models of particle production this suggests that the spin of the proton is carried by its valence quarks.

Topics & Keywords

Particle physics theoretical and experimental studies Quantum Chromodynamics and Particle Interactions Superconducting Materials and Applications

Publication Details

Published in: Physical Review Letters

Volume 61, Issue 17, pp. 1918-1921

DOI: 10.1103/physrevlett.61.1918

Field-Weighted Citation Impact: 4.60

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