1. Nuclear effects on R=σL/σT in deep-inelastic scattering
- Author
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K Ackerstaff, A Airapetian, N Akopov, I Akushevich, M Amarian, E.C Aschenauer, H Avakian, R Avakian, A Avetissian, B Bains, C Baumgarten, M Beckmann, S Belostotski, J.E Belz, Th Benisch, S Bernreuther, N Bianchi, J Blouw, H Böttcher, A Borissov, M Bouwhuis, J Brack, S Brauksiepe, B Braun, B Bray, St Brons, W Brückner, A Brüll, E.E.W Bruins, H.J Bulten, G.P Capitani, P Carter, P Chumney, E Cisbani, G.R Court, P.F Dalpiaz, E De Sanctis, D De Schepper, E Devitsin, P.K.A de Witt Huberts, P Di Nezza, M Düren, A Dvoredsky, G Elbakian, J Ely, A Fantoni, A Fechtchenko, M Ferstl, K Fiedler, B.W Filippone, H Fischer, B Fox, J Franz, S Frullani, M.-A Funk, Y Gärber, H Gao, F Garibaldi, G Gavrilov, P Geiger, V Gharibyan, A Golendukhin, G Graw, O Grebeniouk, P.W Green, L.G Greeniaus, C Grosshauser, M Guidal, A Gute, V Gyurjyan, J.P Haas, W Haeberli, J.-O Hansen, M Hartig, D Hasch, O Häusser, F.H Heinsius, R Henderson, M Henoch, R Hertenberger, Y Holler, R.J Holt, W Hoprich, H Ihssen, M Iodice, A Izotov, H.E Jackson, A Jgoun, R Kaiser, E Kinney, M Kirsch, A Kisselev, P Kitching, H Kobayashi, N Koch, K Königsmann, M Kolstein, H Kolster, V Korotkov, W Korsch, V Kozlov, L.H Kramer, V.G Krivokhijine, M Kurisuno, G Kyle, W Lachnit, P Lenisa, W Lorenzon, N.C.R Makins, F.K Martens, J.W Martin, F Masoli, A Mateos, M McAndrew, K McIlhany, R.D McKeown, F Meissner, F Menden, A Metz, N Meyners, O Mikloukho, C.A Miller, M.A Miller, R Milner, A Most, V Muccifora, R Mussa, A Nagaitsev, Yu Naryshkin, A.M Nathan, F Neunreither, J.M Niczyporuk, W.-D Nowak, M Nupieri, T.G O'Neill, R Openshaw, J Ouyang, B.R Owen, V Papavassiliou, S.F Pate, M Pitt, S Potashov, D.H Potterveld, G Rakness, A Reali, R Redwine, A.R Reolon, R Ristinen, K Rith, P Rossi, S Rudnitsky, M Ruh, D Ryckbosch, Y Sakemi, I Savin, C Scarlett, A Schäfer, F Schmidt, H Schmitt, G Schnell, K.P Schüler, A Schwind, J Seibert, T.-A Shibata, K Shibatani, T Shin, V Shutov, C Simani, A Simon, K Sinram, P Slavich, M Spengos, E Steffens, J Stenger, J Stewart, U Stoesslein, M Sutter, H Tallini, S Taroian, A Terkulov, E Thomas, B Tipton, M Tytgat, G.M Urciuoli, J.F.J van den Brand, G van der Steenhoven, R van de Vyver, J.J van Hunen, M.C Vetterli, V Vikhrov, M.G Vincter, J Visser, E Volk, W Wander, J Wendland, S.E Williamson, T Wise, K Woller, S Yoneyama, and H Zohrabian
- Subjects
Physics ,HERMES experiment ,Nuclear and High Energy Physics ,Particle physics ,010308 nuclear & particles physics ,Scattering ,Sigma ,DESY ,Deep inelastic scattering ,01 natural sciences ,Nuclear physics ,Transverse plane ,Cross section (physics) ,0103 physical sciences ,010306 general physics ,Scaling - Abstract
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 = sigma_L / sigma_T of longitudinal to transverse deep-inelastic scattering cross sections at low x and low Q^2.
- Published
- 2000
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