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7 results on '"deep inelastic scattering: muon nucleus"'

1. A re-evaluation of the nuclear structure function ratios for D, He, 6Li, C and Ca

Author

P. Amaudruz, M. Arneodo, A. Arvidson, B. Badelek, M. Ballintijn, G. Baum, J. Beaufays, I.G. Bird, P. Björkholm, M. Botje, C. Broggini, W. Brückner, A. Brüll, W.J. Burger, J. Ciborowski, R. van Dantzig, H. Döbbeling, J. Domingo, J. Drinkard, A. Dyring, H. Engelien, M.I. Ferrero, L. Fluri, U. Gaul, P. Grafstrom, T. Granier, D. von Harrach, M. van der Heijden, C. Heusch, Q. Ingram, K. Janson-Prytz, M. de Jong, E.M. Kabuβ, R. Kaiser, T.J. Ketel, F. Klein, B. Korzen, U. Krüner, S. Kullander, U. Landgraf, F. Lettenström, T. Lindqvist, G.K. Mallot, C. Mariotti, G. van Middelkoop, A. Milsztajn, Y. Mizuno, A. Most, A. Mücklich, J. Nassalski, D. Nowotny, N. Pavel, J. Oberski, A. Paić, C. Peroni, H. Peschel, B. Povh, R. Rieger, K. Rith, K. Röhrich, E. Rondio, L. Ropelewski, A. Sandacz, D. Sanders, C. Scholz, R. Schumacher, R. Seitz, U. Sennhauser, F. Sever, T.-A. Shibata, M. Siebler, A. Simon, A. Staiano, M. Szleper, G. Taylor, M. Treichel, Y. Tzamouranis, M. Virchaux, J.L. Vuilleumier, T. Walcher, R. Windmolders, A. Witzmann, and F. Zetsche

Subjects
Nuclear and High Energy Physics, Particle physics, muon nucleus: deep inelastic scattering, 90: 200 GeV, Analytical chemistry, helium, mass: correction, numerical calculations: interpretation of experiments, INELASTIC MUON SCATTERING, radiative correction, F2(N)/F2(P), deep inelastic scattering: muon nucleus, correction: mass, deuterium, Physics, calcium, Muon, Scattering, carbon, Structure function, Nuclear structure, structure function: ratio, Deuterium, lithium, Phenomenology-HEP
Abstract

We present a re-evaluation of the structure function ratios F2(He)/F2(D), F2(C)/F2(D) and F2(Ca)/F2(D) measured in deep inelastic muon-nucleus scattering at an incident muon momentum of 200 GeV. We also present the ratios F2(C)/F2(Li), F2(Ca)/F2(Li) and F2(Ca)/F2(C) measured at 90 GeV. The results are based on data already published by NMC; the main difference in the analysis is a correction for the masses of the deuterium targets and an improvement in the radiative corrections. The kinematic range covered is 0.0035 < x < 0.65, 0.5 < Q~2

Published
1995
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2. Ratio of J/ψ production cross sections in deep inelastic muon scattering from tin and carbon

Author

L. Fluri, C. A. Heusch, E. M. Kabuss, M. Siebler, Thomas Walcher, M. de Jong, A. Simon, P. Amaudruz, D. von Harrach, U. Sennhauser, C. Peroni, F. Sever, M.I. Ferrero, E. Rondio, J. L. Vuilleumier, Quentin Ingram, M. van der Heijden, C. Scholz, R. Kaiser, W. Brückner, G. van Middelkoop, H. Engelien, K. Rith, J. Nassalski, D. Nowotny, A. Sandacz, Y. Mizuno, R. Rieger, Y. Tzamouranis, J. Ciborowski, T.-A. Shibata, J. Drinkard, F. Klein, W. J. Burger, Günter Baum, K. Röhrich, Chiara Mariotti, A. Brüll, Amedeo Staiano, L. Ropelewski, Michele Arneodo, Ulrich Landgraf, B. Badelek, J. Domingo, F. Zetsche, T. Lindqvist, B. Povh, Tjeerd Ketel, R. van Dantzig, M. Botje, I. G. Bird, J. Beaufays, H. Döbbeling, K. Janson, S. Kullander, C. Broggini, Roland Windmolders, A. Arvidson, Michael Düren, and G. K. Mallot

Subjects
Nuclear and High Energy Physics, forward spectrometer: experimental results, muon nucleus: deep inelastic scattering, DEUTERIUM, coherent interaction: muon nucleus, chemistry.chemical_element, energy dependence, J/psi(3100): hadroproduction, x-dependence, ENERGY, Nuclear physics, ELECTRON-SCATTERING, IRON TARGETS, DEPENDENCE, tin, J-PSI, PHOTOPRODUCTION, NUCLEON, GLUON, muon nucleus: coherent interaction, Nuclear Experiment, deep inelastic scattering: muon nucleus, 200: 280 GeV, Physics, Muon, Scattering, carbon, gluon: momentum spectrum, transverse momentum: dependence, CERN SPS, effect: coherence, Gluon, muon nucleus: inclusive reaction, chemistry, Deuterium, High Energy Physics::Experiment, color: singlet, hadroproduction: J/psi(3100), Atomic physics, Tin, Nucleon, Carbon, Electron scattering, channel cross section: ratio, Particle Physics - Experiment
Abstract

We present results on J/psi production in muon interactions with tin and carbon targets at incident muon energies of 200 and 280 GeV. The ratio of cross sections per nucleon for J/psi production on tin and carbon, R(Sn/C), is studied as a function of p(T)2, z and x. We find an enhancement for coherent J/psi production R(coh)(Sn/C) = 1.54 +/- 0.07, a suppression for quasielastic production R(qe)(Sn/C) = 0.79 +/- 0.06 and for inelastic production R(in)(Sn/C) = 1.13 +/- 0.08. The inelastic cross section ratio can be interpreted within the Colour Singlet model as an enhancement ot the gluon distribution in tin with respect to that in carbon. The dependence of the ratio on z and p(T)2 can explain the discrepancy between the results obtained in previous experiments.

Published
1992
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3. The Structure Function Ratios F2(Li)/F2(D) and F2(C)/F2(D) at small x

Author

THE NEW MUON COLLABORATION, Arneodo, M., Arvidson, A., Badelek, B., Ballintijn, M., Baum, G., Beaufays, J., Bird, I. G., Bjorkholm, P., Botje, M., Broggini, C., Bruckner, W., Brull, A., Burger, W. J., Ciborowski, J., van~Dantzig, R., Dyring, A., Engelien, H., Ferrero, M. I., Fluri, L., Gaul, U., Granier, T., Grosse-Perdekamp, M., von~Harrach, D., van~der~Heijden, M., Heusch, C., Igo, G., Ingram, Q., Janson-Prytz, K., de~Jong, M., Kabuss, E. M., Kaiser, R., Kessler, H. J., Ketel, T. J., Klein, F., Kullander, S., Landgraf, U., Lindqvist, T., Mallot, G. K., Mariotti, C., van~Middelkoop, G., Milsztajn, A., Mizuno, Y., Most, A., Mucklich, A., Nassalski, J., Nowotny, D., Oberski, J., Paic, A., Peroni, C., Povh, B., Rieger, R., Rith, K., Rohrich, K., Rondio, E., Ropelewski, L., Sandacz, A., Sanders, D., Scholz, C., Seitz, R., Sever, F., Shibata, T. -A., Siebler, M., Simon, A., Staiano, A., Szleper, M., Tzamouranis, Y., Virchaux, M., Vuilleumier, J. L., Walcher, T., Whitten, C., Windmolders, R., Witzmann, A., and Zetsche, F.

Subjects
Nuclear and High Energy Physics, Particle physics, nuclear physics: effect, muon nucleus: deep inelastic scattering, DEUTERIUM, Analytical chemistry, FOS: Physical sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), ELECTRON-SCATTERING, Experiment-HEP, INELASTIC MUON SCATTERING, effect: shadowing, Saturation (graph theory), deep inelastic scattering: muon nucleus, NUCLEON, Physics, Range (particle radiation), Muon, Scattering, carbon, Structure function, 200 GeV, CHARGE-DENSITY, R=SIGMA-L/SIGMA-T, CERN SPS, F2, lithium, TOTAL CROSS-SECTIONS, structure function: small-x, High Energy Physics::Experiment, spectrometer: experimental results, Particle Physics - Experiment
Abstract

We present the structure function ratios F2(Li)/F2(D) and F2(C)/F2(D) measured in deep inelastic muon-nucleus scattering at a nominal incident muon energy of 200 GeV. The kinematic range 0.0001 < x < 0.7 and 0.01< Q^2 < 70 GeV^2 is covered. For values of x less than 0.002 both ratios indicate saturation of shadowing at values compatible with photoabsorption results. We present the structure function ratios F2(Li)/F2(D) and F2(C)/F2(D) measured in deep inelastic muon-nucleus scattering at a nominal incident muon energy of 200 GeV. The kinematic range 0.0001 < x < 0.7 and 0.01< Q~2 < 70 GeV~2 is covered. For values of $x$ less than $0.002$ both ratios indicate saturation of shadowing at values compatible with photoabsorption results. We present the structure function ratios F2(Li)/F2(D) and F2(C)/F2(D) measured in deep inelastic muon-nucleus scattering at a nominal incident muon energy of 200 GeV. The kinematic range 0.0001 < x < 0.7 and 0.01< Q~2 < 70 GeV~2 is covered. For values of $x$ less than $0.002$ both ratios indicate saturation of shadowing at values compatible with photoabsorption results. We present the structure function ratios F2(Li)/F2(D) and F2(C)/F2(D) measured in deep inelastic muon-nucleus scattering at a nominal incident muon energy of 200 GeV. The kinematic range 0.0001 < x < 0.7 and 0.01< Q~2 < 70 GeV~2 is covered. For values of $x$ less than $0.002$ both ratios indicate saturation of shadowing at values compatible with photoabsorption results. We present the structure function ratios F2(Li)/F2(D) and F2(C)/F2(D) measured in deep inelastic muon-nucleus scattering at a nominal incident muon energy of 200 GeV. The kinematic range 0.0001 < x < 0.7 and 0.01< Q~2 < 70 GeV~2 is covered. For values of $x$ less than $0.002$ both ratios indicate saturation of shadowing at values compatible with photoabsorption results. We present the structure function ratios F2(Li)/F2(D) and F2(C)/F2(D) measured in deep inelastic muon-nucleus scattering at a nominal incident muon energy of 200 GeV. The kinematic range 0.0001 < x < 0.7 and 0.01< Q~2 < 70 GeV~2 is covered. For values of $x$ less than $0.002$ both ratios indicate saturation of shadowing at values compatible with photoabsorption results. We present the structure function ratios F2(Li)/F2(D) and F2(C)/F2(D) measured in deep inelastic muon-nucleus scattering at a nominal incident muon energy of 200 GeV. The kinematic range 0.0001 < x < 0.7 and 0.01< Q~2 < 70 GeV~2 is covered. For values of $x$ less than $0.002$ both ratios indicate saturation of shadowing at values compatible with photoabsorption results. We present the structure function ratios F2(Li)/F2(D) and F2(C)/F2(D) measured in deep inelastic muon-nucleus scattering at a nominal incident muon energy of 200 GeV. The kinematic range 0.0001 < x < 0.7 and 0.01< Q~2 < 70 GeV~2 is covered. For values of $x$ less than $0.002$ both ratios indicate saturation of shadowing at values compatible with photoabsorption results. We present the structure function ratios measured in deep inelastic muonnucleus scattering at a nominal incident muon energy of 200 GeV The kinematic range is covered. For values of x less than 0.002 both ratios indicate saturation of shadowing at values compatible with photoabsorption results.

Published
1995

4. 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

5. 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

6. 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

7. HADRONIC FINAL STATES IN HIGH-ENERGY MUON - NUCLEON SCATTERING: RECENT RESULTS FROM THE EMC

Author

Brasse, F. W.

Subjects
COPPER, X-DEPENDENCE: ENERGY SPECTRUM, TALK, ENERGY SPECTRUM [X-DEPENDENCE], HADRON: ELECTROPRODUCTION, DEEP INELASTIC SCATTERING [MUON NUCLEUS], MULTIPLE PRODUCTION: HADRON, CARBON, ELECTROPRODUCTION [HADRON], ONE-PHOTON [EXCHANGE], MUON NUCLEUS [DEEP INELASTIC SCATTERING], ELECTROPRODUCTION: HADRON, GLUON: EXCHANGE, EXCHANGE: GLUON, MULTIPLE PRODUCTION [FRAGMENTATION], HADRON [ELECTROPRODUCTION], QUANTUM CHROMODYNAMICS, MUON NUCLEON: DEEP INELASTIC SCATTERING, STRUCTURE FUNCTION, FRAGMENTATION [MULTIPLE PRODUCTION], VIOLATION [SCALING], HADRON [MULTIPLE PRODUCTION], FRAGMENTATION: MULTIPLE PRODUCTION, TRANSVERSE MOMENTUM [PI0], ENERGY SPECTRUM: X-DEPENDENCE, EXCHANGE [ONE-PHOTON], MULTIPLE PRODUCTION: FRAGMENTATION, 120: 200: 280 GEV, GLUON [EXCHANGE], ANGULAR DISTRIBUTION, EXCHANGE [GLUON], PI0: TRANSVERSE MOMENTUM, MUON NUCLEON [DEEP INELASTIC SCATTERING], MULTIPLE PRODUCTION [HADRON], MUON NUCLEUS: DEEP INELASTIC SCATTERING, MAGNETIC SPECTROMETER: EXPERIMENTAL RESULTS, DEEP INELASTIC SCATTERING: MUON NUCLEUS, DEEP INELASTIC SCATTERING: MUON NUCLEON, SCALING: VIOLATION, ONE-PHOTON: EXCHANGE, MODEL: QUARK PARTON, HADRON: MULTIPLE PRODUCTION, 200: 280 GEV [120], CERN SPS, EXCHANGE: ONE-PHOTON, DEEP INELASTIC SCATTERING [MUON NUCLEON], QUARK PARTON [MODEL], HADRON: MULTIPLICITY, MULTIPLICITY [HADRON], X-DEPENDENCE [ENERGY SPECTRUM], EXPERIMENTAL RESULTS [MAGNETIC SPECTROMETER]
Abstract

19 pp. (1982).

Published
1982
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