title: Longitudinal-transverse separations of deep-inelastic structure functions at low Q2 for hydrogen and deuterium.
abstract: We report on a study of the longitudinal to transverse cross section ratio, R=sigmaL/sigmaT, at low values of x and Q2, as determined from inclusive inelastic electron-hydrogen and electron-deuterium scattering data from Jefferson Laboratory Hall C spanning the four-momentum transfer range 0.06<Q2<2.8 GeV2. Even at the lowest values of Q2, R remains nearly constant and does not disappear with decreasing Q2, as might be expected. We find a nearly identical behavior for hydrogen and deuterium.
authors.affiliation: Vrije Universiteit, 1081 HV Amsterdam, The Netherlands.
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