Absolute Drell-Yan Dimuon Cross Sections in 800 GeV/c pp and pd Collisions

Details Absolute Drell-Yan Dimuon Cross Sections in 800 GeV/c pp and pd Collisions Absolute Drell-Yan Dimuon Cross Sections in 800 GeV/c pp and pd Collisions

2003-02-14

arxiv.org/abs/hep-ex/0302019v1

Physics

High Energy Physics

High Energy Physics - Experiment

submitted to Phys. Rev. Lett

Scientific paper

The Fermilab E866/NuSea Collaboration has measured the Drell-Yan dimuon cross sections in 800 GeV/$c$ $pp$ and $pd$ collisions. This represents the first measurement of the Drell-Yan cross section in $pp$ collisions over a broad kinematic region and the most extensive study to date of the Drell-Yan cross section in $pd$ collisions. The results indicate that recent global parton distribution fits provide a good description of the light antiquark sea in the nucleon over the Bjorken-$x$ range $0.03 \lesssim x < 0.15$, but overestimate the valence quark distributions as $x \to 1$.

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