Phys. Rev. Lett. 83, 2304–2307 (1999)Parton Energy Loss Limits and Shadowing in Drell-Yan Dimuon ProductionReceived 27 May 1999; published in the issue dated 20 September 1999 A precise measurement of the ratios of the Drell-Yan cross section per nucleon for an 800 GeV/c proton beam incident on Be, Fe, and W targets is reported. The behavior of the Drell-Yan ratios at small target-parton momentum fraction is well described by an existing fit to the shadowing observed in deep-inelastic scattering. The cross-section ratios as a function of the incident-parton momentum fraction set tight limits on the energy loss of quarks passing through a cold nucleus. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.2304
DOI:
10.1103/PhysRevLett.83.2304
PACS:
24.85.+p, 13.85.Qk, 25.40.Ve
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