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Longitudinal double-spin asymmetry and cross section for inclusive jet production in polarized proton collisions at square root of s = 200 GeV. | LitMetric
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Longitudinal double-spin asymmetry and cross section for inclusive jet production in polarized proton collisions at square root of s = 200 GeV.

B I Abelev M M Aggarwal Z Ahammed J Amonett B D Anderson M Anderson D Arkhipkin G S Averichev Y Bai J Balewski O Barannikova L S Barnby J Baudot S Bekele V V Belaga A Bellingeri-Laurikainen R Bellwied F Benedosso S Bhardwaj A Bhasin

Phys Rev Lett

Yale University, New Haven, Connecticut 06520, USA.

Published: December 2006

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

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http://dx.doi.org/10.1103/PhysRevLett.97.252001DOI Listing

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