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Cross sections and transverse single-spin asymmetries in forward neutral-pion production from proton collisions at sqrt[s]=200 GeV.
- Source :
-
Physical review letters [Phys Rev Lett] 2004 Apr 30; Vol. 92 (17), pp. 171801. Date of Electronic Publication: 2004 Apr 29. - Publication Year :
- 2004
-
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.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 92
- Issue :
- 17
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 15169138
- Full Text :
- https://doi.org/10.1103/PhysRevLett.92.171801