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| Total Pages | : 27 |
| Release | : 1997 |
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| Release | : 1997 |
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A study of prompt photon plus associated jet production is performed at next-to-leading order (O(??{sub s}2)) in QCD at √S=200--500 GeV, appropriate for the RHIC polarized {rvec p}{rvec p} collider experiment. Momentum correlations between the jet and photon are examined and the utility of the process as a method for constraining the size and shape of the polarized gluon density of the proton?G is examined.
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| Publisher | : |
| Total Pages | : 27 |
| Release | : 1997 |
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A study of prompt photon plus associated jet production is performed at next-to-leading order (O([alpha][alpha]{sub s}2)) in QCD at √S = 200--500 GeV, appropriate for the RHIC polarized {rvec p}{rvec p} collider experiment. Momentum correlations between the jet and photon are examined and the utility of the process as a method for constraining the size and shape of the polarized gluon density of the proton [Delta]G is examined.
| Author | : Sanghyeon Chang |
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| Release | : 1997 |
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| Total Pages | : 27 |
| Release | : 2013 |
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Rapidity distributions are presented for events containing either a Z boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at \sqrt{s} = 7 TeV, correspond to an integrated luminosity of 5.0 inverse femtobarns. The individual rapidity distributions of the boson and the jet are consistent within 5% with expectations from perturbative QCD. However, QCD predictions for the sum and the difference in rapidities of the two final-state objects show discrepancies with CMS data. In particular, next-to-leading-order QCD calculations, and two common Monte Carlo event generators using different methods to match matrix-element partons with parton showers, appear inconsistent with the data as well as with each other.
| Author | : L. E. Gordon |
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| Total Pages | : 14 |
| Release | : 1996 |
| Genre | : Nuclear reactions |
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| Release | : 1995 |
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| Total Pages | : 3 |
| Release | : 2000 |
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We consider spin asymmetries for prompt photon production in collisions of longitudinally polarized hadrons. This reaction will be a key tool at the BNL-RHIC {rvec p}{rvec p} collider for determining the gluon spin density in a polarized proton. We study the effects of QCD corrections, such as all-order soft-gluon ''threshold'' resummations.
