TY  - JOUR
A1  - Adams, J.
A1  - Adler, Clemens
A1  - Berger, Jens
A1  - Dietel, Thomas
A1  - Flierl, Dominik Bernhard
A1  - Kollegger, Thorsten
A1  - Lange, Jens Sören
A1  - Stock, Reinhard
A1  - Struck, Christof
A1  - al., et
A1  - Collaboration, STAR
T1  - Cross sections and transverse single-spin asymmetries in forward neutral-pion production from proton collisions at sqrt[s] = 200 GeV
N2  - 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 xF below about 0.3, and becomes positive and large at higher xF, similar to the trend in data at sqrt[s] <= 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 pT>1 GeV/c at a polarized proton collider.
Y1  - 2004
UR  - http://publikationen.stub.uni-frankfurt.de/frontdoor/index/index/docId/3562
UR  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hebis:30-19010
ER  -