Adams, J;
Adler, C;
Aggarwal, MM;
Ahammed, Z;
Amonett, J;
Anderson, BD;
Anderson, M;
... STAR Collaboration, .; + view all
(2004)
Cross sections and transverse single-spin asymmetries in forward neutral-pion production from proton collisions at root s=200 GeV.
PHYS REV LETT
, 92
(17)
, Article 171801. 10.1103/PhysRevLett.92.171801.
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Abstract
Measurements of the production of forward high-energy pi(0) mesons from transversely polarized proton collisions at root200 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 roots less than or equal to20 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.
| Type: | Article |
|---|---|
| Title: | Cross sections and transverse single-spin asymmetries in forward neutral-pion production from proton collisions at root s=200 GeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.92.171801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.92.171801 |
| Language: | English |
| Additional information: | © 2004 The American Physical Society |
| Keywords: | PC CNI POLARIMETER, HIGH CHI-F, ANALYZING-POWER, POLARIZED ANTIPROTONS, AZIMUTHAL ASYMMETRY, HARD-SCATTERING, PI-0 PRODUCTION, GEV-C, QCD, ELECTROPRODUCTION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1324890 |
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