Longitudinal double-spin asymmetry and cross section for inclusive jet production in polarized proton collisions at {radical}{ovr s} = 200 GeV.

Journal Article · Sun Jan 01 00:00:00 EST 2006 · Phys. Rev. Lett.

DOI:https://doi.org/10.1103/PhysRevLett.97.252001· OSTI ID:966038

Krueger, K; Spinka, H M; Underwood, D G; Abelev, B I; Aggarwal, M M; Ahammed, Z; Anderson, B D; Arkhipkin, D

We report a measurement of the longitudinal double-spin asymmetry A{sub LL} and the differential cross section for inclusive midrapidity jet production in polarized proton collisions at {radical}s = 200 GeV. The cross section data cover transverse momenta 5 < p{sub T} < 50 GeV/c and agree with next-to-leading order perturbative QCD evaluations. The A{sub LL} data cover 5 < p{sub T} < 17 GeV/c and disfavor at 98% C.L. maximal positive gluon polarization in the polarized nucleon.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC); National Science Foundation (NSF); Swiss NSF
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 966038
• Report Number(s): ANL-HEP-PR-09-69; PRLTAO; TRN: US0904024
• Journal Information: Phys. Rev. Lett., Vol. 97, Issue 2006; ISSN 0031-9007
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASYMMETRY
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
GLUONS
POLARIZATION
PRODUCTION
PROTONS
QUANTUM CHROMODYNAMICS