Absolute Measurements of Drell-Yan Cross Sections in 800 GeV pN Collisions

Details Absolute Measurements of Drell-Yan Cross Sections in 800 GeV pN Collisions Absolute Measurements of Drell-Yan Cross Sections in 800 GeV pN Collisions

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apru15013w&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

The production of massive lepton pairs in proton-nucleon collisions is an important probe of the anti-quark distributions in the nucleon. FNAL E866/NuSea has measured the ratio σ_pd/σ_pp for proton induced dimuon production, which provides important constraints on the ratio of anti-down to anti-up quarks as a function of Björken-x. Absolute measurements of the proton-proton and proton-deuteron cross sections provide complementary information on bard(x)+baru(x) and baru(x). Results for both the cross section ratio and absolute measurements are presented and compared with NLO calculations based on current parton distribution functions.

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