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Updated: Jul 21, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 16, 2013
Cross sections and transverse single-spin asymmetries in forward neutral-pion production from proton collisions at
J Adams1, C Adler, M M Aggarwal
1University of Birmingham, Birmingham, United Kingdom.
Abstract:
Measurements of the production of forward high-energy pi(0) mesons from transversely polarized proton collisions at sqrt[s]=200 GeV are reported. The cross section is generally consistent with next-to-leading order perturbative QCD calculations. The analyzing power is small at x(F) below about 0.3, and becomes positive and large at higher x(F), similar to the trend in data at sqrt[s]< or =20 GeV. The analyzing power is in qualitative agreement with perturbative QCD model expectations. This is the first significant spin result seen for particles produced with p(T)>1 GeV/c at a polarized proton collider.
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