| Measurement of the Nuclear Dependence of R = (2007) | |||||||||||||
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Abstract | |||||||||||||
| . We propose to measure inclusive, inelastic (3:1 ! W 2 ! 8:5 GeV 2 ), electron-nucleon and electron-nucleus scatttering cross sections in the region of Bjorken scaling variable (0:02 ! x ! 0:5), and spanning the four-momentum transfer range 0:07 ! Q 2 ! 2:2 (GeV/c) 2 . The cross sections will be used to perform Rosenbluth-type separations to extract the ratio R = oe L =oeT . The ratio R has been reasonably well measured in deep inelastic scattering up to Q 2 = 50 and down to Q 2 = 1:5 (GeV/c) 2 using hydrogen and deuterium targets. However, very few measurements exist on nuclei. Of all the functions measured in deep inelastic scattering, R is still one of the most poorly understood, despite numerous attempts to extract it from the cross sections. R is a fundamental quantity which has direct bearing on our understanding of the underlying quark structure of the nucleus. Existing data at moderate to large values of Q 2 rule out significant A-dependent effects in R. Howeve... | |||||||||||||
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