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  • Nuclear effects on R= σL/ σ...
    Ackerstaff, K; Akushevich, I; Amarian, M; Avakian, H; Avakian, R; Bains, B; Baumgarten, C; Belostotski, S; Belz, J.E; Benisch, Th; Bernreuther, S; Blouw, J; Böttcher, H; Borissov, A; Brauksiepe, S; Braun, B; Brons, St; Bruins, E.E.W; Carter, P; Court, G.R; Dalpiaz, P.F; De Schepper, D; Devitsin, E; Di Nezza, P; Elbakian, G; Fechtchenko, A; Filippone, B.W; Funk, M.-A; Gärber, Y; Gao, H; Garibaldi, F; Geiger, P; Gharibyan, V; Golendukhin, A; Graw, G; Grebeniouk, O; Green, P.W; Greeniaus, L.G; Guidal, M; Gute, A; Häusser, O; Ihssen, H; Iodice, M; Jackson, H.E; Jgoun, A; Kinney, E; Koch, N; Königsmann, K; Korsch, W; Kramer, L.H; Kyle, G; Lachnit, W; Lenisa, P; Lorenzon, W; Makins, N.C.R; Masoli, F; McAndrew, M; McKeown, R.D; Metz, A; Milner, R; Mussa, R; Nagaitsev, A; Naryshkin, Yu; Nathan, A.M; Neunreither, F; Nowak, W.-D; O'Neill, T.G; Openshaw, R; Papavassiliou, V; Pate, S.F; Potterveld, D.H; Reali, A; Redwine, R; Reolon, A.R; Ristinen, R; Rudnitsky, S; Ruh, M; Sakemi, Y; Scarlett, C; Schmidt, F; Schnell, G; Schüler, K.P; Seibert, J; Shibata, T.-A; Shutov, V; Simani, C; Sinram, K; Steffens, E; Sutter, M; Taroian, S; Terkulov, A; Urciuoli, G.M; van den Brand, J.F.J; van de Vyver, R; Vetterli, M.C; Visser, J; Wander, W; Williamson, S.E; Wise, T; Woller, K

    Physics letters. B, 2000, Letnik: 475, Številka: 3
    Journal Article

    Cross section ratios for deep-inelastic scattering from 14N and 3He with respect to 2H have been measured by the HERMES experiment at DESY using a 27.5 GeV positron beam. The data cover a range in the Bjorken scaling variable x between 0.013 and 0.65, while the negative squared four-momentum transfer Q 2 varies from 0.5 to 15 GeV 2. The data are compared to measurements performed by NMC, E665, and SLAC on 4He and 12C, and are found to be different for x<0.06 and Q 2<1.5 GeV 2. The observed difference is attributed to an A-dependence of the ratio R= σ L / σ T of longitudinal to transverse deep-inelastic scattering cross sections at low x and low Q 2.