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3 results on '"structure function: ratio"'

1. A measurement of the ratio of the nucleon structure function in copper and deuterium

Author

J. Womersley, T. O. Niinikoski, N. Pavel, C. Benchouk, T. Schröder, W.S.C. Williams, F. Lettenström, G.R. Court, V. Papavassiliou, Jozsef Toth, F. G. Oakham, F. Combley, Tim Jones, M. I. Ferrero, Ricardo Piegaia, R. F. Oppenheim, Klaus Mönig, E. Gabathuler, T. Lindqvist, V. W. Hughes, T. Ernst, B. Badelek, B. Pietrzyk, Stephen Wimpenny, Joshua Thompson, Ulrich Landgraf, Bogdan Povh, E. Rondio, J. Gillies, K. P. Schüler, B. Korzen, J. Gajewski, M. C. Caputo, K. Schultze, D. Lanske, A. Jacholkowska, A. Sandacz, L. Urban, E. M. Kabuss, G. D'Agostini, S.C. Brown, L. Ropelewski, P. B. Renton, J. S. Chima, N. Dyce, H. E. Stier, D. von Harrach, Klaus Hamacher, H. Peschel, F. Montanet, Jacek Ciborowski, P. Grafström, M. Matthews, T. A. Shibata, P.J. Hayman, J. Drees, J. M. Rieubland, W. Wallucks, S. Wheeler, David Francis, J. Stock, C. Peroni, T. Walcher, J. Nassalski, Günter Baum, K. Rith, J.R. Holt, V. Gibson, R. W. Clifft, Amedeo Staiano, U. Krüner, Geoffrey Taylor, A. W. Edwards, P. R. Norton, R. Gamet, Y. Mizuno, Christopher Bee, Karl Ziemons, J. G. Ashman, Harry Cheung, D. Salmon, A.M. Osborne, S. Kullander, T. J. Sloan, M. C. Edwards, Roland Windmolders, Michael Düren, I. G. Bird, G. Coignet, J. Beaufays, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), EMC, and BOMBAR, Claudine

Subjects
Quark, Particle physics, forward spectrometer: experimental results, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], muon nucleus: deep inelastic scattering, Physics and Astronomy (miscellaneous), Nuclear Theory, deep inelastic scattering: muon deuteron, chemistry.chemical_element, Elementary particle, muon deuteron: deep inelastic scattering, 01 natural sciences, 7. Clean energy, Nuclear physics, 0103 physical sciences, effect: shadowing, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Redistribution (chemistry), Quantum field theory, deep inelastic scattering: muon nucleus, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, structure function: ratio, nucleon: structure function, CERN SPS, quark: momentum spectrum, Copper, Deuterium, chemistry, copper, 100: 120: 200: 280 GeV, Nucleon, Electron scattering, Particle Physics - Experiment
Abstract

Results are presented on the ratios of the nucleon structure function in copper to deuterium from two separate experiments. The data confirm that the nucleon structure function,F2, is different for bound nucleons than for the quasi-free ones in the deuteron. The redistribution in the fraction of the nucleon's momentum carried by quarks is investigated and it is found that the data are compatible with no integral loss of quark momenta due to nuclear effects.

Published
1993

2. Measurements of $R^{d}-R^{p}$ and $R^{Ca}-R^{C}$ in deep inelastic muon scattering

Author

Geoffrey Taylor, J. Domingo, Y. Mizuno, K. Röhrich, D. Nowotny, I. G. Bird, E. Rondio, E.M. Kabuß, J. Beaufays, A. Sandacz, M.I. Ferrero, F. Sever, C. Scholz, H. Döbbeling, L. Fluri, G. van Middelkoop, F. Zetsche, P. Amaudruz, C. Peroni, T. Granier, Gerhard K. Mallot, W. J. Burger, J. Drinkard, R. A. Schumacher, G. Baum, T. Lindqvist, A. Arvinson, U. Krüner, K. Janson-Prytz, T.-A. Shibata, R. Rieger, R. Windmolders, M. de Jong, J. Nassalski, M. Siebler, Thomas Walcher, M. Virchaux, D. von Harrach, F. Klein, N. Pavel, Michele Arneodo, Ulrich Landgraf, L. Ropelewski, B. Povh, H. Engelien, Quentin Ingram, M. van der Heijden, C. A. Heusch, B. Badelek, H. Peschel, M. Treichel, P. Grafström, R. Kaiser, A. Brüll, Chiara Mariotti, J. L. Vuilleumier, Amedeo Staiano, A. Simon, W. Brückner, K. Rith, U. Sennhauser, M. Botie, A. Milsztajn, R. van Dantzig, J. Ciborowski, Tjeerd Ketel, B. Korzen, F. Lettenström, C. Broggini, and S. Kullander

Subjects
Nuclear and High Energy Physics, Proton, muon nucleus: deep inelastic scattering, Nuclear Theory, polarization: longitudinal, deep inelastic scattering: muon deuteron, Virtual particle, cross section: ratio, photon: absorption, Elementary particle, muon deuteron: deep inelastic scattering, Nuclear physics, absorption: photon, deep inelastic scattering: muon p, polarization: transverse, HIGH STATISTICS MEASUREMENT, R=SIGMA-L/SIGMA-T, HIGH Q2, Nuclear Experiment, Absorption (electromagnetic radiation), deep inelastic scattering: muon nucleus, 90: 200: 280 GeV, Physics, Muon, calcium, Scattering, carbon, structure function: ratio, CERN SPS, longitudinal: polarization, Particle scattering, Deuterium, muon p: deep inelastic scattering, Physics::Accelerator Physics, transverse: polarization, Atomic physics, Particle Physics - Experiment, experimental results
Abstract

Results are presented on the difference in R, the ratio of longitudinally to transversely polarised virtual photon absorption cross sections, for the deuteron and the proton. They are obtained by c ...

Published
1992

3. Precision measurement of structure function ratios for Li-6, C-12 and Ca-40

Author

Amaudruz, P., Arneodo, M., Arvidson, A., Badelek, B., Baum, Günter, Beaufays, J., Bird, I. G., Botje, M., Broggini, C., Bruckner, W., Brüll, A., Burger, W. J., Ciborowski, J., van Dantzig, R., Dobbeling, H., Domingo, J., Drinkard, J., Engelien, H., Ferrero, M. I., Fluri, L., Grafstrom, P., von Harrach, D., van der Heijden, M., Heusch, C., Ingram, C. H. Quentin, Janson, K., de Jong, M., Kabuss, E. M., Kaiser, R., Ketel, T. J., Klein, F., Korzen, B., Kruner, U., Kullander, S., Landgraf, U., Lettenstrom, F., Lindqvist, T., Mallot, G. K., Mariotti, C., van Middelkoop, G., Mizuno, Y., Nassalski, J., Nowotny, D., Pavel, N., Peroni, C., Peschel, H., Povh, B., Rieger, R., Rith, K., Rohrich, K., Rondio, E., Ropelewski, L., Sandacz, A., Scholz, C., Schumacher, R., Sennhauser, U., Sever, F., Shibata, T. A., Siebler, M., Simon, A., Staiano, A., Taylor, G., Treichel, M., Vuilleumier, J. L., Walcher, T., Windmolders, R., and Zetsche, F.

Subjects
calcium, muon nucleus: deep inelastic scattering, carbon, dependence: mass number, mass number: dependence, structure function: ratio, nucleon: structure function, CERN SPS, magnetic spectrometer: experimental results, dependence: momentum transfer, lithium, 90 GeV, High Energy Physics::Experiment, nucleus: density, Nuclear Experiment, deep inelastic scattering: muon nucleus
Abstract

The structure function ratios F2C/F2Li, F2Ca/F2Li and F2Ca/F2C were measured in deep inelastic muon-nucleus scattering at an incident muon energy of 90 GeV, covering the kinematic range 0.0085 < x < 0.6 and 0.8 < Q2 < 17 GeV2. The sensitivity of the nuclear structure functions to the size and mean density of the target nucleus is discussed.

Published
1992

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