Muon-Proton Deep Inelastic Scattering

Abstract
We have measured muon-proton deep inelastic scattering in the range 0.4<q2<3.6 (GeV/c)2. The data are consistent with muon-electron universality, and if the ratio ρ=νW2(μp)νW2(ep) is fitted with the form ρ=N(1+q2Λ2)2, we obtain N=0.997±0.043 and Λ2=+0.006±0.016 (GeV/c)2. This result establishes that |Λ|>~5.1 GeV/c with 95% confidence.