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1. PRODUCTION OF CHARMED PARTICLES IN 250 GEV MU+-IRON INTERACTIONS

Author

H.E. Montgomery, D. Williams, J. Favier, J.H. Cobb, J. Gayler, J. M. Crespo, K. Moser, H. Pessard, H. Wahlen, C. Best, J. J. Aubert, W. Stockhausen, K. Rith, M. Henckes, X. De Bouard, M. Leenen, J.K. Davies, Klaus Hamacher, W.S.C. Williams, Jennifer S. Haas, M.I. Ferrero, E. Gabathuler, F.W. Brasse, H. E. Stier, L. Massonnet, A. W. Edwards, M. Schneegans, S.C. Brown, V. Gerhardt, J.M. Thenard, Stephen Wimpenny, P. R. Norton, M. Villers, P.F. Dalpiaz, J. C. Thompson, E. Boehm, J.G. Williamson, K.H. Becks, P. Dalpiaz, P. Payre, A.M. Osborne, J. Drees, P. Gregory, J. McNicholas, T. J. Sloan, G. Bassompierre, Cristiana Peroni, L. Urban, V. Korbel, Richard Mount, R. Gamet, W.D. Dau, W. Flauger, M. Edwards, Y. Declais, J. Carr, W. Mohr, U. Pietrzyk, P.J. Hayman, M. Whalley, U. Dosselli, R.W. Dobinson, Ulrich Landgraf, Claus Goessling, G. D'Agostini, G. Coignet, H. Minssieux, F. Combley, M. Maire, R. W. Clifft, and C. Broll

Subjects
Physics, Quark, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Branching fraction, High Energy Physics::Phenomenology, Nuclear Theory, Charm quark, Nuclear physics, Particle decay, Pair production, High Energy Physics::Experiment, Nuclear Experiment, Nucleon, Particle Physics - Experiment
Abstract

Dimuon and trimuon events produced by the interaction of 250 GeV muons in an iron target have been studied and are shown to originate predominantly from charm production. The data are used to measure the contribution of charm to the nucleon structure function F 2 . The cross sections for real photoproduction ( Q 2 =0) of charm in the current fragmentation region are derived as a function of photon energy and are found to be ∼0.6% of the total, hadronic photoproduction cross section in this energy range. The measured cross sections are found to be well represented by the photon-gluon fusion model. The charmed quark fragmentation function is obtained by using this model to fit the measured decay muon energy distribution and is found to be well represented by exp(1.6±1.6) Z . The data are used to study the momentum distribution of the gluons in the nucleon. An upper limit of 1.4% (90% confidence level) is set on the branching ratio D→ μν and a model-dependent upper limit on the branching ratio F→ μν is derived.

Published
2016

2. EVIDENCE FOR ANOMALOUS PROMPT PHOTONS IN DEEP INELASTIC MUON SCATTERING AT 200-GEV

Author

F. Combley, M. Maire, P.J. Hayman, Claus Gössling, M. Leenen, F.W. Brasse, J. C. Thompson, C. Broll, W.D. Dau, W. Mohr, H.E. Montgomery, M. Schneegans, W. Stockhausen, J. Gayler, E. Gabathuler, T. J. Sloan, C. Benchouk, J. Haas, J.K. Davies, Klaus Hamacher, H. Pessard, G. Bassompierre, V. Gerhardt, L. Urban, R. W. Clifft, M. I. Ferrero, P. Payre, Ulrich Landgraf, W. Flauger, J. Williamson, W.S.C. Williams, M. Henckes, C. Best, V. Korbel, J. Carr, Uwe Pietrzyk, M. Whalley, A. W. Edwards, J.M. Thenard, P. R. Norton, K. Rith, G.R. Court, C. Peroni, J. Nassalski, M. Edwards, U. Dosselli, G. D'Agostini, G. Coignet, A.M. Osborne, J. Favier, J. Drees, J. J. Aubert, X. De Bouard, R. Gamet, D. Williams, J.H. Cobb, H. Forsbach, S.C. Brown, H. E. Stier, K. Moser, E. Nagy, P. Gregory, J. McNicholas, Stephen Wimpenny, Gunnar Ingelman, Y. Declais, R.P. Muont, E. Böhm, H. Wahlen, K.H. Becks, 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 Damoiseaux, Magali

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Photon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, Hadron, Bremsstrahlung, Compton scattering, Inelastic scattering, Deep inelastic scattering, 01 natural sciences, 7. Clean energy, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Particle Physics - Experiment
Abstract

The inclusive yield of photons has been measured from deep inelastic interactions of 200 GeV muons on hydrogen. After subtracting the contributions from hadron electromagnetic decays and Bethe-Heitler muon bremsstrahlung, residual photons are observed at low pT and low z at a mean level of 0.15±0.06 per interaction. The quark Compton scattering process is unable to explain the data, thus indicating an anomalous photon production. © 1989.

Published
2016

3. Measurement of the Q2, x and W2 dependence of single hadron production in deep inelastic muon scattering

Author

C. Broll, H.E. Montgomery, J. Gayler, J. M. Crespo, Uwe Pietrzyk, L. Massonnet, J. Favier, A. W. Edwards, J.M. Thenard, C. Best, P. R. Norton, Claus Gössling, H. Pessard, K. Moser, U. Dosselli, Klaus Hamacher, M. Leenen, F.W. Brasse, D. Williams, K.H. Becks, W.S.C. Williams, J.H. Cobb, Joshua Thompson, F. Combley, M. Maire, M. Schneegans, G. Coignet, W. Stockhausen, G. Bassompierre, V. Korbel, P. Payre, Richard Mount, H. Wahlen, A.M. Osborne, T. J. Sloan, Y. Declais, J. Carr, H. E. Stier, M. C. Edwards, Cristiana Peroni, H. Forsbach, Jennifer S. Haas, S.C. Brown, M. Whalley, R.W. Dobinson, R. Gamet, P. Dalpiaz, P.J. Hayman, G.R. Court, L. Urban, P. Gregory, Ulrich Landgraf, E. Böhm, Stephen Wimpenny, J. McNicholas, W.D. Dau, M. Villers, P.F. Dalpiaz, R. W. Clifft, K. Rith, J. Drees, M. Henckes, H. Minssieux, J.K. Davies, E. Nagy, M.I. Ferrero, V. Gerhardt, W. Mohr, J. J. Aubert, X. De Bouard, E. Gabathuler, and W. Flauger

Subjects
Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Single variable, Particle physics, High energy, Muon, Scattering, Hadron, High Energy Physics::Phenomenology, Nuclear physics, High Energy Physics::Experiment, Scaling, Particle Physics - Experiment, Energy (signal processing)
Abstract

Measurements are presented of the distributions in scaled energy of the hadrons produced in high energy muon scattering. The observed dependence on x (non-factorisation) and Q 2 (scaling violation) is similar to that expected from next to leading order QCD calculations. These variations in the data can be equivalently represented by a dependence on the single variable W 2 .

Published
2016

4. QCD ANALYSIS OF THE STRUCTURE-FUNCTION F2 IN MUON NUCLEON-SCATTERING

Author

Uwe Pietrzyk, A. W. Edwards, W.S.C. Williams, A.M. Osborne, T. J. Sloan, K. Moser, J.R. Holt, J.M. Thenard, R.W. Dobinson, H. Jokisch, W. Mohr, J.G. Williamson, P. R. Norton, G. Bassompierre, R. W. Clifft, V. Korbel, J. Favier, L. Urban, S.C. Brown, Cristiana Peroni, Klaus Hamacher, M. C. Edwards, D. Williams, F. Combley, J.H. Cobb, H. Wahlen, P. Payre, K.H. Becks, M. Maire, C. Best, E. Böhm, J. Carr, H. Pessard, C. Broll, H.E. Montgomery, W. Flauger, M. Leenen, J. J. Aubert, J. Gayler, M. Whalley, Joshua Thompson, Claus Gössling, M. Schneegans, X. De Bouard, M. Henckes, P. Dalpiaz, E. Gabathuler, G. D'Agostini, G.R. Court, Richard Mount, U. Dosselli, G. Krikonis, J. M. Crespo, W.D. Dau, R. Gamet, M. Villers, P.F. Dalpiaz, G. Coignet, H. E. Stier, F.W. Brasse, J.K. Davies, M.I. Ferrero, L. Massonnet, Y. Declais, V. Gerhardt, W. Stockhausen, P. Gregory, Jennifer S. Haas, Ulrich Landgraf, P.J. Hayman, H. Minssieux, J. Drees, J. McNicholas, K. Rith, and Stephen Wimpenny

Subjects
Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Muon, Scattering, Inelastic scattering, Gluon, Nuclear physics, High Energy Physics::Experiment, Charm (quantum number), Nucleon, Electron scattering, Particle Physics - Phenomenology
Abstract

A QCD analysis in leading and next to leading order of the structure function F 2 measured in deep inelastic muon nucleon scattering is presented. Taking into account several phenomenological uncertainties, including the gluon description and the charm contribution, fits to the data give values of the QCD scale parameter Λ LO in the range 7-–250 MeV. A consistent description of muon scattering and lower Q 2 electron scattering requires the presence of higher twist 1/ Q 2 contributions to the scale breaking which are then determined as a function of x from the data.

Published
2016

5. The ratio of the nucleon structure functions F2N for iron and deuterium

Author

M. Leenen, Joshua Thompson, M. Schneegans, G. D'Agostini, S.C. Brown, K. Rith, W. Stockhausen, Jennifer S. Haas, W.S.C. Williams, W.D. Dau, M. Henckes, H. E. Stier, J. J. Aubert, A.M. Osborne, Stephen Wimpenny, P. Payre, T. J. Sloan, D. Williams, H. Pessard, E. Böhm, C. Best, X. De Bouard, J. Favier, K. Moser, J.H. Cobb, R. Gamet, E. Gabathuler, C. Broll, J. Drees, H.E. Montgomery, J.K. Davies, M. Whalley, M.I. Ferrero, P.J. Hayman, J. Gayler, Klaus Hamacher, H. Wahlen, V. Gerhardt, G.R. Court, M. C. Edwards, F. Combley, M. Maire, K.H. Becks, Claus Gössling, Cristiana Peroni, M. Villers, F.W. Brasse, Ulrich Landgraf, R. W. Clifft, Richard Mount, J. McNicholas, H. Minssieux, Uwe Pietrzyk, Y. Declais, J.G. Williamson, U. Dosselli, A. W. Edwards, J.M. Thenard, V. Korbel, G. Coignet, P. R. Norton, J. Carr, G. Bassompierre, L. Urban, W. Mohr, R.W. Dobinson, and W. Flauger

Subjects
Physics, Nuclear and High Energy Physics, Muon, Scattering, Structure function, EMC effect, European Muon Collaboration, Nuclear physics, Deuterium, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, Nucleon, Particle Physics - Experiment
Abstract

Using the data on deep inelastic muon scattering on iron and deuterium the ratio of the nucleon structure functions F 2 N ( Fe )/ F 2 N ( D ) is presented. The observed x -dependence of this ratio is in disagreement with existing theoretical predictions.

Published
2016

6. A detailed study of the nucleon structure functions in deep inelastic muon scattering in iron

Author

U. Dosselli, H. E. Stier, J.H. Cobb, Cristiana Peroni, G. D'Agostini, S.C. Brown, G. Coignet, P. Payre, M. Edwards, R.W. Dobinson, K. Rith, U. Pietrzyk, J.G. Williamson, M. Whalley, E. Gabathuler, J. Favier, W. Mohr, J. Drees, R. W. Clifft, V. Korbel, G. Bassompierre, Richard Mount, Ulrich Landgraf, W.S.C. Williams, K. Moser, W.D. Dau, Claus Goessling, J. McNicholas, J. Carr, J. J. Aubert, H. Wahlen, A.M. Osborne, Y. Declais, T. J. Sloan, Stephen Wimpenny, C. Best, W. Flauger, C. Broll, H.E. Montgomery, H. Pessard, W. Stockhausen, X. De Bouard, L. Urban, J. Gayler, M. Leenen, J.K. Davies, Klaus Hamacher, M.I. Ferrero, Jennifer S. Haas, F. Combley, M. Maire, V. Gerhardt, K.H. Becks, A. W. Edwards, J.M. Thenard, M. Schneegans, P. R. Norton, M. Henckes, R. Gamet, P.J. Hayman, E. Boehm, F.W. Brasse, J. C. Thompson, 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, Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Muon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, EMC effect, Inelastic scattering, Deep inelastic scattering, 01 natural sciences, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Nucleon, Particle Physics - Experiment
Published
2016

7. Quark and diquark fragmentation into neutral strange particles as observed in muon-proton interactions at 280 GeV

Author

D. Blum, F. G. Oakham, Michele Arneodo, B. Pietrzyk, J. Carr, H. E. Stier, J.M. Thenard, Paolo Giubellino, J. Favier, Claus Gössling, P. Grafström, P. R. Norton, T. Schröder, H. Brück, M. Whalley, P. B. Renton, A. Edwards, H. M. Braun, C. Pascaud, E. Böhm, Stephen Wimpenny, J. Williamson, K.H. Becks, J. J. Aubert, M. Pötsch, Kr Long, F. Dengler, Jc Thompson, R. W. Clifft, Christopher Bee, J. Shiers, J. Foster, V. Korbel, J. Pettingale, P. Payre, S. Wheeler, M.I. Ferrero, A. Manz, J. S. Chima, A. Schlagböhmer, J. Nassalski, W. Stockhausen, T. Ernst, C. Benchouk, B. Pönsgen, K. Schultze, N. Geddes, W. D. Dau, G. Kellner, D. Lanske, J. Drees, A. de la Torre, E. Rondio, G. Jancso, M. Studt, C. Broll, H.E. Montgomery, Gy. Wolf, J.K. Davies, D. Callebaut, J.H. Cobb, G. Eszes, Geoffrey Taylor, J. Gayler, P. Zank, F. Janata, I. Derado, Ulrich Landgraf, W. Wittek, E. Nagy, Richard Mount, F. W. Brasse, A. Jacholkowska, T. Dreyer, W. Mohr, H. Wahlen, S. Dahlgren, R. Gamet, J. G. Loken, E. Hagberg, W. Wallucks, Jane Coughlan, G. D'Agostini, F. Grard, V. Eckardt, L. Urban, K. Rith, Jozsef Toth, J. Figiel, Jennifer S. Haas, L. Paul, J. Beaufays, X. De Bouard, F. Combley, M. Maire, J.J. Dumont, W. Flauger, Ph. Heusse, P.J. Hayman, E. Gabathuler, M. Jaffre, F. Montanet, M. Schneegans, J. Krüger, U. Dosselli, Hans Calén, I. G. Bird, G. Coignet, A.M. Osborne, S. Kullander, T. J. Sloan, Cristiana Peroni, Roland Windmolders, C. Hoppe, A. Arvidson, Michael Düren, H. Pessard, L. Gustafsson, E. M. Kabuss, A. S. Johnson, H. Preissner, S.C. Brown, F.J. Hasert, N. Schmitz, G.R. Court, M. Edwards, P. Ribarics, and W.S.C. Williams

Subjects
Physics, Quark, Nuclear and High Energy Physics, Particle physics, Muon, Scattering, Hadron, Nuclear physics, Diquark, symbols.namesake, Fragmentation (mass spectrometry), symbols, Feynman diagram, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract

The production of K 0 s, Λs and Λ s has been studied in a 280 GeV muon-proton scattering experiment with almost complete coverage of all kinematic regions. A study is made of the dependence of the multiplicities on the hadronic centre of mass energy, W , and of the Feynman x distributions. It is found that K 0 and Λ production is mostly central and increases strongly with W , whereas Λ production comes mainly from the remnant target system and is only weakly W dependent.

Published
2016

8. A search for free quarks in deep inelastic muon scattering

Author

Claus Goessling, W.S.C. Williams, J. McNicholas, H. E. Stier, H. Wahlen, M. Henckes, K. Moser, H. Pessard, Stephen Wimpenny, K.H. Becks, W. Stockhausen, C. Best, R.W. Dobinson, P.J. Hayman, R. W. Clifft, J. Favier, V. Korbel, F. Combley, M. Maire, Jennifer S. Haas, P. Payre, Klaus Hamacher, Richard Mount, Cristiana Peroni, S.C. Brown, M. Leenen, D. Williams, U. Dosselli, Y. Declais, G. Bassompierre, J.K. Davies, M.I. Ferrero, W. Mohr, J.H. Cobb, Uwe Pietrzyk, Joshua Thompson, W.D. Dau, J. Carr, G. von Holtey, V. Gerhardt, M. Schneegans, F.W. Brasse, A. W. Edwards, M. Whalley, L. Urban, G. D'Agostini, J.M. Thenard, A.M. Osborne, P. R. Norton, T. J. Sloan, G.R. Court, W. Flauger, G. Coignet, J. Drees, J. J. Aubert, E. Boehm, Ulrich Landgraf, H. Minssieux, X. De Bouard, E. Gabathuler, C. Broll, H.E. Montgomery, R. Gamet, M. C. Edwards, J. Gayler, K. Rith, 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), 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), EMC, and BOMBAR, Claudine

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Muon, Spectrometer, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, Physics::Instrumentation and Detectors, EMC effect, 01 natural sciences, 7. Clean energy, Charged particle, Nuclear physics, Muon collider, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Accelerator Physics, High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, Particle Physics - Experiment
Abstract

A search was made at the CERN SPS for long-lived fractionally charged particles produced in deep inelastic muon interactions on a Be target using the existing muon beam line as a spectrometer. No such particles were found, leading to upper limits for the production cross section of the order of 10 −36 cm 2 for 200 GeV incident muon momentum and quark masses below 9 GeV for the 2 3 charge and 15 GeV for 1 3 charge.

Published
2016

9. TRANSVERSE-MOMENTUM OF CHARGED HADRONS OBSERVED IN DEEP INELASTIC MUON SCATTERING

Author

H. E. Stier, P. Gregory, Cristiana Peroni, M. Leenen, J. Drees, F. Combley, M. Maire, Joshua Thompson, M. Schneegans, U. Dosselli, D. Williams, C. Broll, P. Payre, E. Böhm, G.R. Court, P. Ghez, K. Moser, R. W. Clifft, H.E. Montgomery, J. Gayler, H. Pessard, W. Stockhausen, J.K. Davies, J.H. Cobb, M.I. Ferrero, L. Urban, V. Gerhardt, Stephen Wimpenny, U. Hahn, W. Flauger, E. Schlösser, P.F. Dalpiaz, C. Best, K. Rith, Uwe Pietrzyk, A. W. Edwards, Jennifer S. Haas, J.M. Thenard, P.J. Hayman, P. R. Norton, W. Mohr, K.H. Becks, A.M. Osborne, T. J. Sloan, H. Wahlen, H. Jokisch, Ulrich Landgraf, J. J. Aubert, W.S.C. Williams, J. McNicholas, Richard Mount, M. Henckes, X. De Bouard, E. Gabathuler, J. M. Crespo, G. Coignet, S.C. Brown, Y. Declais, W.D. Dau, Claus Gössling, F.W. Brasse, L. Massonnet, M. C. Edwards, P. Dalpiaz, V. Korbel, G. Bassompierre, J. Carr, R. Gamet, J. Favier, Klaus Hamacher, and R.W. Dobinson

Subjects
Momentum, Nuclear physics, Physics, Nuclear and High Energy Physics, Transverse plane, High energy, Muon, Scattering, Transverse momentum, Hadron, Perturbative QCD, Nuclear Experiment, Particle Physics - Experiment
Abstract

The transverse momenta of charged hadrons produced in high energy muon-proton scattering have been studied. The average squared transverse momentum 〈 p 2 ⊥ 〉 shows a strong dependence on z = E h / v characteristic of intrinsic momentum effects and a significant rise as a function of s = W 2 . The W 2 , q 2 , x and z dependences of the data are compared with the predictions of a perturbative QCD model.

Published
2016

10. An experimental limit on the intrinsic charm component of the nucleon

Author

A. W. Edwards, J.M. Thenard, P. R. Norton, E. Böhm, J. M. Crespo, J. J. Aubert, R.W. Dobinson, M. Villers, P.F. Dalpiaz, R. W. Clifft, P.J. Hayman, X. De Bouard, L. Massonnet, Claus Gössling, E. Gabathuler, J. Favier, F.W. Brasse, W. Stockhausen, M. Henckes, L. Urban, C. Broll, H.E. Montgomery, K.H. Becks, W. Flauger, P. Payre, Jennifer S. Haas, H. E. Stier, Ulrich Landgraf, J. Gayler, P. Ghez, F. Combley, M. Maire, U. Dosselli, K. Rith, Richard Mount, W.D. Dau, Cristiana Peroni, J.G. Williamson, J.K. Davies, Klaus Hamacher, K. Moser, R. Gamet, P. Gregory, M.I. Ferrero, J. Drees, Y. Declais, V. Gerhardt, G. Bassompierre, H. Wahlen, W. Mohr, W.S.C. Williams, C. Best, H. Minssieux, M. Leenen, Joshua Thompson, M. Schneegans, G. D'Agostini, A.M. Osborne, T. J. Sloan, H. Pessard, G. Coignet, M. Whalley, M. C. Edwards, S.C. Brown, D. Williams, J.H. Cobb, J. McNicholas, P. Dalpiaz, Stephen Wimpenny, V. Korbel, J. Carr, and Uwe Pietrzyk

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Photon, Component (thermodynamics), High Energy Physics::Phenomenology, Gluon, Nuclear physics, Cross section (physics), Content (measure theory), High Energy Physics::Experiment, Limit (mathematics), Charm (quantum number), Nucleon, Nuclear Experiment, Particle Physics - Experiment
Abstract

Charm production has been studied through multimuon events produced in 250 GeV μ + -interactions. The measured dimuon cross section is in agreement with the photon gluon fusion model at low values of Bjorken x within statistical and systematic errors. At larger values of x Bi the data do not support the magnitude of intrinsic charm used to explain hadro-production of charm. Upper limits on the intrinsic charm content of the nucleon are derived from the data.

Published
2016

11. A VLSI analog pipeline read-out for electrode segmented ionization chambers

Author

A. Zampieri, G.C. Bonazzola, S. Bouvier, M. Figus, E. Pernigotti, M. Donetti, Roberto Cirio, J.M. Thenard, F. Marchetto, and Cristiana Peroni

Subjects
Physics, Very-large-scale integration, Nuclear and High Energy Physics, Radiotherapy, business.industry, Pipeline (computing), Reading (computer), Electrical engineering, Integrated circuit, Particle detector, Dosimetry, Microelectronics, VLSI, law.invention, law, Ionization, Ionization chamber, business, Instrumentation, Electronic circuit
Abstract

We report on the design and test of a 32-channel VLSI chip based on the analog pipeline memory concept. The charge from a strip of a ionization chamber, is stored as a function of time in a switched capacitor array. The cell reading can be done in parallel with the writing.

Published
1999

12. Determination of αs from jet multiplicities measured on the Z0 resonance

Author

L. Li, R.J. Wu, A. Sopczak, D. Duchesneau, J.M. Qian, G. Landi, W. Lange, Philip Kaaret, W. Ruckstuhl, D. P. Stickland, Y. Mir, J.F. Li, D. Pandoulas, T. McMahon, C. H. Ye, P. Vikas, A. Gordeev, H. Suter, Y.F. Wang, H. Anderhub, M. Schneegans, T. Spickermann, S. Kwan, Bernard Ille, Sc Yeh, M. Guanziroli, G. Fernandez, R. de Asmundis, D. Antreasyan, K. Sudhakar, M. J. Glaubman, R. Dolin, E. Dénes, H. El Mamouni, R. Sehgal, C. Zabounidis, P. Arce, R. Magahiz, D. Goujon, J. D. Swain, T.J. Wenaus, Sw. Banerjee, A. Leike, Manjit Kaur, P. McBride, R. Malik, Valentin V. Khoze, Vincenzo Innocente, Bz Yang, Jj Blaising, X. Leytens, Dimitri Bourilkov, L. Antonov, T. Kramer, G. Herten, Valery Schegelsky, Antonino Zichichi, J.M. Lubbers, Y. H. Chang, Ph Fisher, An.A. Vorobyov, George Alverson, B. Borgia, T. Matsuda, J. P. Martin, M. Bourquin, H. Rykaczewski, H. Akbari, Hafeez R. Hoorani, G. Faber, K. Strauch, Y. Karyotakis, W.G. Ma, S. X. Wu, Vineet Kumar, J. Ulbricht, E. Nagy, M. Vivargent, Christine Buisson, C. Goy, J. Krizmanic, E. Shumilov, A. Marchionni, J. M. Salicio, U. Micke, A. L. Anderson, A. Böhm, O. Adriani, A. van Laak, D. Linnhofer, J. Zoll, Z. M. Wang, R. Mount, L.S. Hsu, M. Schöntag, W. Böhlen, V. Shoutko, S. Rosier-Lees, I. Vorobiev, V.R. Krastev, C. Dionisi, E. Gonzalez, Pablo Garcia-Abia, Alain Hervé, M. G. Alviggi, Ying Wu, M. Fukushima, H. Haan, A. Kuhn, Zhuoxiang Ren, L. Urbàn, D. DiBitonto, M. Wadhwa, J. F. Zhou, A. Klimentov, J. A. Bakken, Lamberto Luminari, D. J. Schotanus, A. Bay, H. Nowak, Jean Fay, M. Dhina, S. Lanzano, Bernardo Adeva, F. Ferroni, V. Koutsenko, Y. Zeng, Jozsef Toth, Carlo Civinini, M. Maolinbay, J. Berdugo, M. Tonutti, X.R. Shi, J. M. You, J. Lettry, Claudio Luci, P. Le Coultre, X.G. Li, N. Produit, M. Aguilar-Benitez, Yu. Kamyshkov, J. Fehlmann, M. Steuer, G. Forconi, B. Spiess, I. Duran, I. Clare, J. Busenitz, Herwig Schopper, Elisabetta Gallo, K. Hangarter, I. Vetlitsky, M. White, D.N. Mao, Petr Levchenko, J.M. Thenard, A.M. Cartacci, B. Monteleoni, Egidio Longo, H.R. Dimitrov, Mw Gruenewald, R. Starosta, C. Souyri, S. Röhner, Chenliang Wang, F. Wittgenstein, J. Weber, P. Göttlicher, C-Q. Li, G. A. Yang, G. Sauvage, Pierre Lecomte, G. Sartorelli, M. Möller, L. Ludovici, P. Schmitz, W. Kittel, D. Luckey, Gy L. Bencze, M. Hebert, Panos A Razis, E. Drago, L. Niessen, Reinhard W. Schulte, R.C. Ball, J. D. Burger, H. Vogt, S. Reucroft, Sau Lan Wu, Z.Y. Lin, G. Paternoster, T. Driever, D.W. Schmitz, C. G. Yang, J. M. Le Goff, Charles Timmermans, D. Boutigny, V. Plyaskin, C. Camps, D. Perret-Gallix, R. Bizzarri, S. Hancke, Ian Brock, Adrian Biland, G. Rahal-Callot, K. Freudenreich, H. Fenker, P. Blömeke, M. Harris, J.G. Branson, S. Shevchenko, M. Fabre, Z.F. Gong, A. Malinin, V. Lalieu, F. DeNotaristefani, K. N. Qureshi, H.F. Chen, M. M. Ilyas, K. S. Kumar, Luciano Romero, Qian Wang, Harvey B Newman, K. Hilgers, G.B. Mills, K.D. Shmakov, S. J. Fan, B. L. Betev, M. Micke, Georgi Sultanov, J. A. Rubio, L. Leistam, R. A. Khan, Robert Clare, R. Fabbretti, Ph. Rosselet, S. Nowak, M. Sachwitz, C. F. He, Samuel C.C. Ting, D. Kaplan, K. Schultze, A. Heavey, E. Tarkovsky, Qiang Li, Steven Goldfarb, T. Riemann, Z.Q. Yang, P.G. Seiler, F. Diez-Hedo, V. P. Andreev, G.J. Bobbink, S. Beingessner, Peter Denes, A. Pevsner, G. Morand, A. Engler, D. Lanske, M. Chemarin, R.B. Sutton, D.H. Zhang, M. Capell, W. Lohmann, G. M. Chen, C. Spartiotis, M. MacDermott, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Gailloud, Paolo Bagnaia, M. Napolitano, Barry Blumenfeld, J. Mnich, E. Jagel, Mingshui Chen, I. Sheer, Helmut Vogel, U. Herten, H. S. Fesefeldt, P. Berges, G. Mirabelli, E. Thomas, Speranza Falciano, J.H. Wang, P. K. Malhotra, H. A. Rizvi, R. Morand, Z. L. Xue, M. A. Niaz, R. Rosmalen, W. Wallraff, X. L. Wang, Guofan Hu, K. Lübelsmeyer, Piero Spillantini, Y. Mi, M. Maire, H. van der Graaf, P. Duinker, G. Chiefari, J.P. Burq, Howard A. Stone, T.S. Dai, Yanwen Liu, D. Ren, A. Arefiev, H. S. Chen, H.J. Schreiber, Q. Fan, D. Zhang, W. J. Metzger, P. Extermann, J. Bao, I. Leedom, H. Hofer, K. L. Tung, G.G.G. Massaro, Z. W. Yin, U. Vikas, A. Contin, Aa Vorobyov, A. Kunin, S. C. Tonwar, F. Carbonara, S. N. Ganguli, L. Martinez, J.C. Sens, A. Degré, F. L. Linde, R. Raghavan, Thomas Ferguson, A. C. König, Y.P. Tong, Laurent Vuilleumier, G. Schwering, Kajari Mazumdar, R. Leiste, E. Isiksal, L. Montanet, S. Khokhar, M. Vollmar, F. Marzano, G. Coignet, W. Krenz, G. H. Wang, Marco Meschini, A. A. Syed, J. Wenninger, V. Pojidaev, Nikita Smirnov, Xd Cai, Zm Wang, D. Kirkby, B. P. Roe, Qi An, D. Wright, B.C. Stringfellow, F. Crijns, F. Cesaroni, J. Y. Liao, S. Lökös, K.S. Yang, G. Finocchiaro, J. Schütte, A. Bujak, Oliver Kornadt, M. Pohl, T. Foreman, Y.J. Pei, Marcel Merk, Th. Rombach, J. Perrier, F. Bruyant, V. Morgunov, B. Bertucci, Nicanor Colino, F. Tonisch, Simonetta Gentile, Kenneth Francis Read, G. Conforto, A. Savin, T. Angelov, M.L. Chen, K. Lanius, M. Gettner, W. Friebel, G. Hu, C. Maña, Marcella Diemoz, X. Lue, U. K. Chaturvedi, G. Trowitzsch, Carlos Willmott, Y. S. Lu, G. Von Dardel, T. Böhringer, P. Marchesini, Jérôme Rose, R. Wilhelm, J. H. Field, Ming Zeng, H. T. Li, M. Röhner, Ren-Yuan Zhu, Luciano Barone, F.C. Erné, Q.Y. Yang, A. Gurtu, V. Commichau, R. Liu, M. Bocciolini, Y.F. Mao, R. T. Van de Walle, A. Hasan, J. Behrens, E. Valente, R. Weill, P. J. Li, D. McNally, G. Viertel, P. Lebrun, Fridolin Dittus, S. S. Gau, P.V.K.S. Baba, S. Morganti, J. Schwenke, X. Y. Cui, S.Y. Zhang, U. Uwer, A. Chen, J. Salicio, Z.Z. Xu, Yu. Galaktionov, J. Alcaraz, Tariq Aziz, Cheng Chen, B. Stöhr, C. Zaccardelli, Raffaello D'Alessandro, C. Grinnell, Leonardo Merola, W. Walk, T. Azemoon, Marcos Cerrada, Crisostomo Sciacca, Marco Pieri, C. Rippich, B. N. Jin, L. Zehnder, Zp Zhang, Konrad Deiters, Alberto Aloisio, A. Ricker, A. Grimes, W.D. Nowak, Th. Meinholz, X. W. Tang, P. A. Piroué, R. L. Summer, L. Baksay, V.G. Shevchenko, G. Gratta, Boleslaw Wyslouch, C.Y. Chien, L. J. Gutay, U. Becker, F. J. Eppling, L. W. Jones, D. S. Yan, S. M. Ting, Federico Carminati, S. Patricelli, Q. Ye, 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, and IHEF (IoP, FNWI)

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Emerging technologies, media_common.quotation_subject, Field (Bourdieu), Skill, Context (language use), Space (commercial competition), Investment (macroeconomics), 01 natural sciences, Celling act, Microeconomics, Networking, Local, Information, Phenomenon, 0103 physical sciences, Mediation, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Empowerment, Particle Physics - Experiment, media_common
Abstract

Whatever the field, major change implies as much as deep transformation of thinking i.e to put in network new skills in particular, those made available by the availability of new technologies. In this context, only one individual cannot join together all necessary skills. It becomes clear that the goal of space valorization cannot be considered without relational investment between the partners and their accumulated background. The local empowerment concerns a collective phenomenon of acquisition and development of skills rests on an learning way appropriate to the potential of the territory to form or promote. The local mediation sets for objective the creation of relations between pre-existent skills and their transfer between the actors, individuals or groups, private or public. But the capacity of the territory to solve these problems will depend closely on the richness of the network and co-operations which it shelters or it will suggest.

Published
1990

13. The construction of the L3 experiment

Author

B. Adeva, M. Aguilar-Benitez, H. Akbari, J. Alcaraz, A. Aloisio, J. Alvarez-Taviel, G. Alverson, M.G. Alviggi, H. Anderhub, A.L. Anderson, A.M. Angelov, T.H. Angelov, G.H. Antchev, L. Antonov, D. Antreasyan, A. Arefiev, I.H. Atanasov, B. Auroy, R. Ayad, O.L. Ayranov, T. Azemoon, T. Aziz, U. Bachmann, P. Bähler, J.A. Bakken, L. Baksay, H. Baldinger, R.C. Ball, J. Ballansat, S. Banerjee, J. Bao, G. Barbier, L. Barone, G. Basti, A. Bay, F. Beauvais, U. Becker, R. Beissel, S. Bendig, P. Béné, J. Berdugo, P. Berges, M. Berthet, Y. Bertsch, B.L. Betev, A. Biland, A. Bischoff, M. Bischops, R. Bizzarri, J.J. Blaising, M. Blanc, P. Blömeke, B. Blumenfeld, G.J. Bobbink, M. Bocciolini, K.D. Boffin, W. Bohlen, A. Böhm, T. Böhringer, H. Bonnefon, C. Bopp, B. Borgia, K. Bosseler, J.F. Bottolier, M. Bourquin, D. Boutigny, P. Bowditch, J.G. Branson, D. Braun, I.C. Brock, F. Bruyant, M. Buchholz, B. Bücken, W. Bulgeroni, R. Burel, J.D. Burger, C. Burgos, J.P. Burq, L. Caiazzo, M. Caillat, B. Camberlin, D. Campana, C. Camps, V. Canale, M. Capell, F. Carbonara, F. Carminati, A.M. Cartacci, M. Cerrada, F. Cesaroni, Y.H. Chang, J.W. Chapman, M. Chemarin, A. Chen, C. Chen, H.F. Chen, H.S. Chen, M. Chen, M.L. Chen, S.R. Chendvankar, G. Chevenier, S. Chidzik, G. Chiefari, C.Y. Chien, F. Chollet, M. Chumakov, C. Civinini, I. Clare, R. Clare, G. Coignet, N. Colino, V. Commichau, G. Conforto, P. Cristofori, F. Crijns, X.Y. Cui, T.S. Dai, R. D'Alessandro, M. Daniel, X. De Bouard, B. Debye, G. Decreuse, A. Degré, K. Deiters, E. Dénes, P. Denes, F. DeNotaristefani, M. Deutschmann, M. Dhina, B. Didierjean, M. Diemoz, M. Dietrich, H.A. Dimitrov, C. Dionisi, F. Dittus, M. Dohmen, R. Dolin, J.F. Donahue, A. Donat, E. Drago, K.H. Dreger, T. Driever, G. Dromby, P. Duinker, I. Duran, M. Elkacimi, H. Elmamouni, A. Engler, F.J. Eppling, F.C. Erné, I. Erne, H. Esser, P. Extermann, R. Fabbretti, G. Faber, S. Falciano, T. Falk, S.J. Fan, M. Favre, J. Fay, S. Fehér, J. Fehlmann, M. Feldmann, H. Fenker, T. Ferguson, M. Fernandez, F. Ferroni, H. Fesefeldt, J. Field, J.M. Figarola, C.F. Figueroa, G.A. Filipov, B. Foligné, G. Forconi, T. Foreman, V. Franzke, W. Frei, K. Freudenreich, W. Friebel, M. Fukushima, G. Gaillard, M. Gailloud, Yu. Galaktionov, E. Gallo, S.N. Ganguli, D. Garelick, S.S. Gau, G. Gavrilov, E. Gennari, S. Gentile, M. Gettner, C. Girard, M. Glaubman, S. Goldfarb, Z.F. Gong, E. Gonzalez, A. Gordeev, Yu. Gorodkov, P. Göttlicher, C. Goy, M. Goyot, G. Gratta, A. Grimes, C. Grinnell, M. Gruenewald, M. Guanziroli, S. Guerra, C. Guillon, A. Gurtu, D. Güsewell, H.R. Gustafson, M. Haensli, M. Haan, C. Haller, T. Hamacher, H. Hammers, K. Hangarter, S. Hancke, M. Harris, D. Harting, F.G. Hartjes, C.F. He, A. Heavey, T. Hebbeker, M. Hebert, R. Heller, Ch. Helmrath, J. Herrmann, G. Herten, U. Herten, A. Hervé, H. Hesser, G. Hilgers, K. Hilgers, H. Hofer, M. Hofer, T. Hofer, F. Hoffmann, U. Horisberger, I. Horvath, L.S. Hsu, G.Q. Hu, B. Ille, M.M. Ilyas, G. Improta, V. Innocente, E. Isiksal, E. Jagel, B.N. Jin, L.W. Jones, M. Jongmanns, H. Jung, P. Kaaret, O. Kaelin, W. Kaestli, Yu. Kamyshkov, D. Kaplan, W. Karpinski, Y. Karyotakis, W. Kertzer, V. Khoze, G. Kirchhoff, W. Kittel, A. Klimentov, P.F. Klok, M. Kollek, M. Koller, A.C. König, O. Kornadt, V. Koutsenko, R.W. Kraemer, V.R. Krastev, A. Kratel, W. Krenz, A. Kuhn, A. Kunin, S. Kwan, J. Lacotte, M. LaMarra, G. Landi, W. Lange, K. Lanius, D. Lanske, S. Lanzano, J.M. Le Goff, J.C. Le Marec, D. Lea, M. Lebeau, P. Lebrun, P. Lecomte, J. Lecoq, P. Le Coultre, I. Leedom, A. Léger, F. Lehmann, L. Leistam, R. Leiste, E. Lejeune, B. Leoni, J. Lettry, X. Leytens, C. Li, H.T. Li, L. Li, P.J. Li, X.G. Li, J.Y. Liao, Z.Y. Lin, F.L. Linde, D. Linnhöfer, E. Loftin, W. Lohmann, S. Lökös, E. Longo, Y.S. Lu, J.M. Lubbers, K. Lübelsmeyer, C. Luci, D. Luckey, X. Lue, L. Luminari, G. Lunadei, F. Lürken, H. Ma, W.G. Ma, M. MacDermott, N. Madjar, R. Magahiz, M. Maire, P.K. Malhotra, A. Malinin, C. Mana, F. Manna, G. Manto, Y.F. Mao, M. Maolinbay, P. Marchesini, A. Marchionni, M. Markwalder, P. Marsden, J.P. Martin, L. Martinez, H.U. Martyn, F. Marzano, V. Marzullo, F. Masciocchi, G.G.G. Massaro, L. Massonnet, T. Matsuda, G. Maurelli, K. Mazumdar, P. McBride, G. Medici, H. Meier, Th. Meinholz, M. Merk, R. Mermod, L. Merola, M. Meschini, W.J. Metzger, M. Micke, U. Micke, G.B. Mills, J. Mnich, M. Moeller, A. Molinero, L. Montanet, B. Monteleoni, R. Montino, G. Morand, R. Morand, S. Morganti, V. Morgunov, R. Mount, M. Moynot, P. Mugnier, W. Nägeli, E. Nagy, M. Napolitano, S. Neboux, H. Newman, Ch. Neyer, K. Nguyen, L. Niessen, A. Nikitin, W.D. Nowak, M. Okle, P. Olmos, J. Onvlee, D. Osborne, J. Ossmann, D. Pandoulas, H. Paprotny, A. Parmentola, G. Passeggio, G. Paternoster, S. Patricelli, Y.J. Pei, Y. Peng, D. Perret-Gallix, J. Perrier, E. Perrin, G. Perrot, P. Petitpas, P. Petschner, A. Pevsner, J. Pier-Amory, M. Pieri, G. Pierschel, P.A. Piroué, V. Plyaskin, M. Pohl, V. Pojidaev, C.L.A. Pols, T. Ponomareff, J. Potyka, N. Produit, P. Prokofiev, F. Pruja, G. Pütz, J.M. Qian, R. Raghavan, P. Razis, K. Read, P. Reddick, K. Reissmann, D. Ren, S. Reucroft, D. Rey, M. Reynaud, X. Ricadonna, J-P. Richeux, C. Rippich, U. Rinsche, R. Rocco, S. Rodriguez, B.P. Roe, M. Röhner, S. Röhner, Th. Rombach, L. Romero, J. Rose, U. Röser, S. Rosier-Lees, J.A. Rubio, W. Ruckstuhl, H. Rykaczewski, P. Sahuc, J. Salicio, S. Saran, G. Sauvage, A. Savin, T. Schaad, B. Schafheitle, V. Schegelsky, A. Schetkovsky, F. Schild, R. Schillsott, P. Schmitt, D. Schmitz, P. Schmitz, M. Schneegans, M. Schneider, E. Schneevogt, M. Schöntag, D.J. Schotanus, H. Schuijlenburg, R. Schulte, A.Schultz Von Dratzig, K. Schultze, J. Schwenke, G. Schwering, C. Sciacca, P.G. Seiler, J.C. Sens, I. Sheer, V. Shevchenko, S. Shevchenko, X.R. Shi, K. Shmakov, V. Shoutko, E. Shumilov, R. Siedling, N. Smirnov, V. Souvorov, C. Souyri, I. Spangler, T. Spickermann, B. Spiess, P. Spillantini, R. Starosta, M. Steuer, D.P. Stickland, B. Stöhr, H. Stone, K. Strauch, K. Sudhakar, R.L. Sumner, H. Suter, R.B. Sutton, H. Szczesny, J. Tang, X.W. Tang, E. Tarkovsky, A. Tavenrath, V. Tchudakov, J.M. Thenard, E. Thomas, T. Thon, H. Thuerig, M. Thulen, C. Timmermans, Samuel C.C. Ting, S.M. Ting, F. Tonisch, Y.P. Tong, M. Tonutti, S.C. Tonwar, J. Tòth, W. Toth, G. Trowitzsch, K.L. Tung, J. Ulbricht, L. Urbàn, E. Valente, R.T. van de Walle, H. van der Graaf, V. Vanzanella, M. Vergain, I. Vetlitsky, H. Vey, G. Viertel, M. Vivargent, H. Vogel, S. Volkov, M. Vollmar, H.P. von Gunten, I. Vorobiev, A. Vorobyov, L. Vuilleumier, S. Waldmeier, W. Walk, W. Wallraff, C.Y. Wang, G.H. Wang, J.H. Wang, Q.F. Wang, X.L. Wang, Y.F. Wang, Z.M. Wang, D. Wassenberg, D. Wegmann, R. Weill, T.J. Wenaus, P. Wenger, J. Wenninger, M. White, R. Wilhelm, C. Willmott, H.P. Wirth, F. Wittgenstein, R.J. Wu, S.X. Wu, Y.G. Wu, B. Wyslouch, F.Y. Xi, Z.Z. Xu, Z.L. Xue, D.S. Yan, K.D. Yanev, B.Z. Yang, C.G. Yang, K.S. Yang, Q.Y. Yang, Z.Q. Yang, C.H. Ye, S.C. Yeh, Z.W. Yin, C. Zabounidis, L. Zehnder, Y. Zeng, D.H. Zhang, S.Y. Zhang, Z.P. Zhang, B. Zhou, J.F. Zhou, Z.P. Zhou, R.Y. Zhu, A. Zichichi, M. Zofka, J. Zoll, 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, B., Adeva, Aloisio, Alberto, Alviggi, Mariagrazia, Canale, Vincenzo, Chiefari, Giovanni, Merola, Leonardo, Napolitano, Marco, Paternoster, Giovanni, Patricelli, Sergio, and Sciacca, Crisostomo

Subjects
Physics, Nuclear and High Energy Physics, Wire chamber, Particle physics, Muon, Photon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, Electron, 01 natural sciences, Particle detector, Nuclear physics, 0103 physical sciences, Large Electron–Positron Collider, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Measuring instrument, High Energy Physics::Experiment, 010306 general physics, Instrumentation
Abstract

The L3 experiment is one of the six large detectors designed for the new generation of electron-positron accelerators. It is the only detector that concentrates its efforts on limited goals of measuring electrons, muons and photons. By not attempting to identify hadrons, L3 has been able to provide an order of magnitude better resolution for electrons, muons and photons. Vertices and hadron jets are also studied. The construction of L3 has involved much state of the art technology in new principles of vertex detection and in new crystals for large scale electromagnetic shower detection and ultraprecise muon detection. This paper presents a summary of the construction of L3.

Published
1990

14. Measurements of the nucleon structure function in the range 0.002 < x < 0.17 and 00.2 < Q2 < 8 GeV2 in deuterium, carbon and calcium

Author

M. Arneodo, A. Arvidson, J.J. Aubert, B. Badelek, J. Beaufays, C.P. Bee, C. Benchouk, G. Berghoff, I.G. Bird, D. Blum, E. Böhm, X. de Bouard, F.W. Brasse, H. Braun, C. Broll, S.C. Brown, H. Brück, H. Calén, J.S. Chima, J. Ciborowski, R. Clifft, G. Coignet, F. Combley, J. Coughlan, G. d'Agostini, S. Dahlgren, I. Derado, T. Dreyer, J. Drees, M. Düren, V. Eckardt, A. Edwards, M. Edwards, T. Ernst, G. Eszes, J. Favier, M.I. Ferrero, J. Figiel, W. Flauger, J. Foster, E. Gabathuler, J. Gajewski, R. Gamet, N. Geddes, P. Grafström, L. Gustafsson, J. Haas, E. Hagberg, F.J. Hasert, P. Hayman, P. Heusse, M. Jaffre, A. Jacholkowska, F. Janata, G. Jancso, A.S. Johnson, E.M. Kabuss, G. Kellner, A. Krüger, J. Krüger, S. Kullander, U. Landgraf, D. Lanske, J. Loken, K. Long, M. Maire, P. Malecki, A. Manz, S. Maselli, W. Mohr, F. Montanet, H.E. Montgomery, E. Nagy, J. Nassalski, P.R. Norton, F.G. Oakham, A.M. Osborne, C. Pascaud, B. Pawlik, P. Payre, C. Peroni, H. Peschel, H. Pessard, J. Pettingale, B. Pietrzyk, B. Poensgen, M. Pötsch, P. Renton, P. Ribarics, K. Rith, E. Rondio, A. Sandacz, M. Scheer, A. Schlagböhmer, H. Schiemann, N. Schmitz, M. Schneegans, M. Scholz, M. Schouten, T. Schröder, K. Schultze, T. Sloan, H.E. Stier, M. Studt, G.N. Taylor, J.M. Thenard, J.C. Thompson, A. de la Torre, J. Toth, L. Urban, W. Wallucks, M. Whalley, S. Wheeler, W.S.C. Williams, S.J. Wimpenny, R. Windmolders, and G. Wolf

Subjects
Physics, Nuclear and High Energy Physics, Muon, Deuterium, Scattering, HERA, Small-angle scattering, Atomic physics, Inelastic scattering, Nucleon, Deep inelastic scattering
Abstract

Small angle scattering of 280 GeV positive muons by deuterium, carbon and calcium has been measured at scattering angles down to 2 mrad. The nucleon structure function F 2 extracted from deuterium does not show a significant x dependence in the measured range of Q 2 and its Q 2 dependence is linear in log Q 2 . For calcium, a depletion of F 2 is observed at low x by 30% as compared with the values at x = 0.1 where F 2 (Ca) and F 2 (D) are not significantly different. This depletion is attributed to shadowing. The carbon structure function exhibits a similar, but less pronounced, x dependence. Such behaviour is observed to be independent of Q 2 . The data are consistent with those obtained from other charged lepton experiments both at similar and higher values of x and Q 2 and considerably extend the range of the measurements down to the low values of x to be measured in forthcoming experiments at HERA.

Published
1990

15. A measurement of the Z0 leptonic partial widths and the vector and axial vector coupling constants

Author

Aa Vorobyov, Francesco Marzano, T. Angelov, J.M. Qian, Philip Kaaret, A. Engler, N. Smirnov, W. Krenz, G. Hu, J.M. Thenard, A.M. Cartacci, Carlos Willmott, L. Ludovici, H.R. Dimitrov, L. Urbàn, V. Plyaskin, U. Becker, G. Rahal-Callot, D.N. Mao, C. Souyri, E. Thomas, Sandra Consuegra Rodríguez, H. T. Li, R.J. Wu, F. J. Eppling, D. S. Yan, S.S. Gau, An.A. Vorobyov, T. Matsuda, F. Cesaroni, L. Leistam, S. M. Ting, Federico Carminati, M. Gailloud, M.L. Chen, Yu. Galaktionov, L. Baksay, K. Schultze, V.G. Shevchenko, Boleslaw Wyslouch, H.J. Schreiber, C.Y. Chien, H.F. Chen, Y.P. Tong, P.G. Seiler, J. Alcaraz, S. Patricelli, E. Tarkovsky, A. Heavey, Q. Ye, V. Schegelsky, M. Gettner, D. Lanske, O. Adriani, G.Q. Hu, T. Kramer, J.C. Sens, Peter Denes, M. Sachwitz, C. Maña, Qi An, S. Lökös, R. Raghavan, Marcella Diemoz, Paolo Bagnaia, J. J. Blaising, T. Ferguson, M. G. Alviggi, K.S. Yang, Samuel C.C. Ting, Th. Rombach, J. P. Burq, G. Von Dardel, K. N. Qureshi, Steven Goldfarb, Marco Meschini, D. Kirkby, J. Schütte, G. Landi, F.G. Hartjes, Laurent Vuilleumier, U. Herten, T. Böhringer, X.R. Shi, D.W. Schmitz, B. N. Jin, H. Haan, Simonetta Gentile, E. Isiksal, D.H. Zhang, Igor Vorobiev, Lamberto Luminari, Y. Peng, S. Schulte, C. Pols, P. Marchesini, B. Stöhr, Ming Zeng, P. Vikas, R. Leiste, Robert Clare, X. Lue, M. Röhner, S. C. Yeh, Antonino Zichichi, J.M. Lubbers, F. Bruyant, V. Morgunov, T. Foreman, Kenneth Francis Read, Egidio Longo, U. K. Chaturvedi, H. Rykaczewski, D. Harting, Thomas Hebbeker, Panos A Razis, Y.J. Pei, Y. S. Lu, Paul Lecoq, G. Conforto, J. Fehlmann, I. Vetlitsky, P. Blömeke, R. L. Sumner, W. Ruckstuhl, S. Rosier-Lees, T. Riemann, M. Napolitano, P. Schmitz, B. Bertucci, Alexei Klimentov, K. Deiters, D. Zhang, D. P. Stickland, P. Le Coultre, Yu. Kamyshkov, R.C. Ball, Adrian Biland, G. Schwering, J. Ulbricht, Raffaello D'Alessandro, Dimitri Bourilkov, C. Camps, Nicanor Colino, L. Zehnder, Y.F. Mao, H. Vogt, R. T. Van de Walle, S. X. Wu, A. Gordeev, M. Micke, Lawrence W. Jones, J. Wenninger, Y. Karyotakis, K. Sudhakar, Y. Mir, C. H. Ye, G. Fernandez, G. H. Wang, K. Hangarter, H. S. Chen, Helmut Vogel, Oliver Kornadt, M. Pohl, R. Liu, Mw Gruenewald, R. Starosta, V. Pojidaev, Jérôme Rose, R. Wilhelm, C. Grinnell, Y. Mi, K. Freudenreich, Leonardo Merola, K.D. Shmakov, S. J. Fan, W. Walk, S. Banerjee, Zp Zhang, Ph. Rosselet, G. J. Bobbink, M. M. Ilyas, Pierre Lecomte, Wesley James Metzger, L.S. Hsu, L. Montanet, D. Luckey, Gy L. Bencze, G. Herten, J. P. Martin, B. Spiess, J.Y. Liao, P.V.K.S. Baba, M. Steuer, J. Onvlee, M. Bourquin, C. G. Yang, I. C. Brock, C. Chen, X. D. Cai, G. Forconi, J. Weber, Z.Q. Yang, E. Valente, M. Chemarin, E. Perrin, K. Strauch, Tariq Aziz, W. Friebel, G. Faber, M. Fabre, Corinne Goy, B. Borgia, V. Lalieu, T.J. Wenaus, S. L. Wu, Speranza Falciano, Vincenzo Innocente, R. Fabbretti, T. Azemoon, Patricia McBride, S. Morganti, Jd Burger, M. Capell, Georgi Sultanov, Jozsef Toth, Charles Timmermans, A. Kuhn, R. A. Khan, H. Akbari, G. Sauvage, V. Koutsenko, Z.Z. Xu, Gaihe Yang, J. Lettry, Claudio Luci, Suresh C Tonwar, R. Weill, G.B. Mills, A. Malinin, Mingshui Chen, M. Dhina, A. van Laak, Qun Wang, R. Dolin, Marcos Cerrada, D. Perret-Gallix, H. S. Fesefeldt, Axel König, D. J. Schotanus, J. A. Bakken, Elisabetta Gallo, R.B. Sutton, W. Lohmann, P. Lebrun, V. P. Andreev, X. L. Wang, E. Jagel, Crisostomo Sciacca, Yanwen Liu, P. J. Li, J. Schwenke, X. Y. Cui, Fridolin Dittus, J. Fay, Marco Pieri, Chenliang Wang, M. Fukushima, P. Schmitt, M. Glaubman, K. Mazumbar, G. M. Chen, S. Reucroft, Harvey B Newman, K. Hilgers, D. Güsewell, A. Chen, M. Vollmar, F. Ferroni, I. Clare, W. Wallraff, D. Wright, H. Fenker, D. Antreasyan, J. M. Le Goff, Alberto Aloisio, S. Beingessner, A. Grimes, Y. Zeng, Z.F. Gong, Th. Meinholz, S.Y. Zhang, A. L. Anderson, J. A. Rubio, P. Göttlicher, J.H. Wang, J. Mnich, P. K. Malhotra, D. Ren, Ying Wu, X. W. Tang, J. G. Branson, J. Von Rango, I. Sheer, J. F. Zhou, M. Herbert, K. Lübelsmeyer, Piero Spillantini, P. A. Piroué, G. Viertel, A. Kunin, P. Duinker, M. MacDermott, Z. W. Yin, S. N. Ganguli, H. van der Graaf, C. Rippich, B. L. Betev, A. Degré, Giovanni Paternoster, J. Bao, U. Uwer, D. Kaplan, A. Contin, Alexander Savin, G. Morand, M. Elkacimi, P. Extermann, I. Leedom, H. Hofer, K. L. Tung, R. Morand, Z. L. Xue, Howard A. Stone, D. Pandoulas, J. Salicio, T.S. Dai, Y. H. Chang, George Alverson, T. Spickermann, S. Kwan, Ren-Yuan Zhu, Luciano Barone, Vineet Kumar, M. Guanziroli, R. Magahiz, G.G.G. Massaro, F. Carbonara, F.C. Erné, Q.Y. Yang, L. Martinez, A. Gurtu, F. L. Linde, V. Commichau, A. Böhm, G. Coignet, E. Shumilov, J. Zoll, M. Bocciolini, J. H. Field, M. Schöntag, W. Böhlen, V. Shoutko, Luciano Romero, C. F. He, Giorgio Gratta, A. Pevsner, M. Tonutti, Barry Blumenfeld, L. Antonov, A. Marchionni, V.R. Krastev, E. Gonzalez, B. Ille, S. Lanzano, Bernardo Adeva, R. W. Kraemer, V. Khoze, C-Q. Li, R. Bizzarri, S. Hancke, F. DeNotaristefani, P. Berges, M. Maire, L. Li, D. Boutigny, J.F. Li, H. Suter, Y.F. Wang, U. Micke, D. Linnhofer, R. Mount, W.D. Nowak, J. Berdugo, B. Monteleoni, W. Kittel, G. Chiefari, S. Shevchenko, M. Schneegans, R. Schulte, Zhuoxiang Ren, J. M. You, N. Produit, A. A. Syed, K. Lanius, F. Crijns, Marcel Merk, J. Perrier, C. Zabounidis, D. Goujon, Bz Yang, A. Sopczak, X. Leytens, H. Anderhub, C. Dionisi, Alain Hervé, G. Mirabelli, A. Bay, D. Campana, Carlo Civinini, M. Maolinbay, X.G. Li, M. Aguilar-Benitez, I. Duran, P. F. Klok, Herwig Schopper, M. White, Petr Levchenko, F. Wittgenstein, E. Drago, L. Niessen, Z.Y. Lin, T. Driever, M. Harris, E. Dénes, B. P. Roe, W.G. Ma, E. Nagy, M. Vivargent, Christine Buisson, Z. M. Wang, A. Arefiev, 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), L3, IHEF (IoP, FNWI), B., Adeva, O., Adriani, M., Aguilarbenitez, H., Akbari, J., Alcaraz, Aloisio, Alberto, G., Alverson, Alviggi, Mariagrazia, Q., An, H., Anderhub, A. L., Anderson, V. P., Andreev, T., Angelov, L., Antonov, D., Antreasyan, A., Arefiev, T., Azemoon, T., Aziz, P. V., K., P., Bagnaia, J. A., Bakken, L., Baksay, R. C., Ball, S., Banerjee, J., Bao, L., Barone, A., Bay, U., Becker, S., Beingessner, G. L., Bencze, J., Berdugo, P., Berge, B., Bertucci, B. L., Betev, A., Biland, R., Bizzarri, J. J., Blaising, P., Blomeke, B., Blumenfeld, G. J., Bobbink, M., Bocciolini, W., Bohlen, A., Bohm, T., Bohringer, B., Borgia, D., Bourilkov, M., Bourquin, D., Boutigny, J. G., Branson, I. C., Brock, F., Bruyant, C., Buisson, J. D., Burger, J. P., Burq, X. D., Cai, D., Campana, C., Camp, M., Capell, F., Carbonara, F., Carminati, A. M., Cartacci, M., Cerrada, F., Cesaroni, Y. H., Chang, U. K., Chaturvedi, M., Chemarin, A., Chen, C., Chen, G. M., Chen, H. F., Chen, H. S., Chen, M., Chen, M. L., Chen, Chiefari, Giovanni, C. Y., Chien, C., Civinini, I., Clare, R., Clare, G., Coignet, N., Colino, V., Commichau, G., Conforto, A., Contin, F., Crijn, X. Y., Cui, T. S., Dai, R., Dalessandro, A., Degre, K., Deiter, E., Dene, P., Dene, F., Denotaristefani, M., Dhina, M., Diemoz, H. R., Dimitrov, C., Dionisi, F., Dittu, R., Dolin, E., Drago, T., Driever, P., Duinker, I., Duran, M., Elkacimi, A., Engler, F. J., Eppling, F. C., Erne, P., Extermann, R., Fabbretti, G., Faber, S., Falciano, S. J., Fan, M., Fabre, J., Fay, J., Fehlmann, H., Fenker, T., Ferguson, G., Fernandez, F., Ferroni, H., Fesefeldt, J., Field, G., Forconi, T., Foreman, K., Freudenreich, W., Friebel, M., Fukushima, M., Gailloud, Y., Galaktionov, E., Gallo, S. N., Ganguli, S. S., Gau, S., Gentile, M., Gettner, M., Glaubman, S., Goldfarb, Z. F., Gong, E., Gonzalez, A., Gordeev, P., Gottlicher, D., Goujon, C., Goy, G., Gratta, A., Grime, C., Grinnell, M., Gruenewald, M., Guanziroli, A., Gurtu, D., Gusewell, H., Haan, S., Hancke, K., Hangarter, M., Harri, D., Harting, F. G., Hartje, C. F., He, A., Heavey, T., Hebbeker, M., Hebert, G., Herten, U., Herten, A., Herve, K., Hilger, H., Hofer, L. S., Hsu, G., Hu, G. Q., Hu, B., Ille, M. M., Ilya, V., Innocente, E., Isiksal, E., Jagel, B. N., Jin, L. W., Jone, P., Kaaret, R. A., Khan, Y., Kamyshkov, D., Kaplan, Y., Karyotaki, V., Khoze, D., Kirkby, W., Kittel, A., Klimentov, P. F., Klok, A. C., Konig, O., Kornadt, V., Koutsenko, R. W., Kraemer, T., Kramer, V. R., Krastev, W., Krenz, A., Kuhn, V., Kumar, A., Kunin, S., Kwan, A., Vanlaak, V., Lalieu, G., Landi, K., Laniu, D., Lanske, S., Lanzano, P., Lebrun, P., Lecomte, P., Lecoq, P., Lecoultre, I., Leedom, J. M., Legoff, L., Leistam, R., Leiste, J., Lettry, P. M., Levchenko, X., Leyten, C., Li, H. T., Li, J. F., Li, L., Li, P. J., Li, X. G., Li, J. Y., Liao, R., Liu, Y., Liu, Z. Y., Lin, F. L., Linde, D., Linnhofer, W., Lohmann, S., Loko, E., Longo, Y. S., Lu, J. M., Lubber, K., Lubelsmeyer, C., Luci, D., Luckey, L., Ludovici, X., Lue, L., Luminari, W. G., Ma, M., Macdermott, R., Magahiz, M., Maire, P. K., Malhotra, A., Malinin, C., Mana, D. N., Mao, Y. F., Mao, M., Maolinbay, P., Marchesini, A., Marchionni, J. P., Martin, L., Martinez, F., Marzano, G. G., G., T., Matsuda, K., Mazumdar, P., Mcbride, T., Meinholz, M., Merk, Merola, Leonardo, M., Meschini, W. J., Metzger, Y., Mi, M., Micke, U., Micke, G. B., Mill, Y., Mir, G., Mirabelli, J., Mnich, L., Montanet, B., Monteleoni, G., Morand, R., Morand, S., Morganti, V., Morgunov, R., Mount, E., Nagy, Napolitano, Marco, H., Newman, L., Niessen, W. D., Nowak, J., Onvlee, D., Pandoula, Paternoster, Giovanni, Patricelli, Sergio, Y. J., Pei, Y., Peng, D., Perretgallix, J., Perrier, E., Perrin, A., Pevsner, M., Pieri, P. A., Piroue, V., Plyaskin, M., Pohl, V., Pojidaev, C. L., A., N., Produit, J. M., Qian, K. N., Qureshi, R., Raghavan, G., Rahalcallot, J., Vonrango, P., Razi, K., Read, D., Ren, Z., Ren, S., Reucroft, T., Riemann, C., Rippich, S., Rodriguez, B. P., Roe, M., Rohner, T., Rombach, L., Romero, J., Rose, S., Rosierlee, P., Rosselet, J. A., Rubio, W., Ruckstuhl, H., Rykaczewski, M., Sachwitz, J., Salicio, G., Sauvage, A., Savin, V., Schegelsky, P., Schmitt, D., Schmitz, P., Schmitz, M., Schneegan, M., Schontag, H., Schopper, D. J., Schotanu, H. J., Schreiber, R., Schulte, S., Schulte, K., Schultze, J., Schutte, J., Schwenke, G., Schwering, Sciacca, Crisostomo, P. G., Seiler, J. C., Sen, I., Sheer, V., Shevchenko, S., Shevchenko, X. R., Shi, K., Shmakov, V., Shoutko, E., Shumilov, N., Smirnov, A., Sopczak, C., Souyri, T., Spickermann, B., Spie, P., Spillantini, R., Starosta, M., Steuer, D. P., Stickland, B., Stohr, H., Stone, K., Strauch, K., Sudhakar, G., Sultanov, R. L., Sumner, H., Suter, R. B., Sutton, A. A., Syed, X. W., Tang, E., Tarkovsky, J. M., Thenard, E., Thoma, C., Timmerman, S. C., C., S. M., Ting, Y. P., Tong, M., Tonutti, S. C., Tonwar, J., Toth, K. L., Tung, J., Ulbricht, L., Urban, U., Uwer, E., Valente, R. T., Vandewalle, H., Vandergraaf, I., Vetlitsky, G., Viertel, P., Vika, M., Vivargent, H., Vogel, H., Vogt, M., Vollmar, G., Vondardel, I., Vorobiev, A. A., Vorobyov, A., Vorobyov, L., Vuilleumier, W., Walk, W., Wallraff, C. R., Wang, G. H., Wang, J. H., Wang, Q. F., Wang, X. L., Wang, Y. F., Wang, Z. M., Wang, J., Weber, R., Weill, T. J., Wenau, J., Wenninger, M., White, R., Wilhelm, C., Willmott, F., Wittgenstein, D., Wright, R. J., Wu, S. L., Wu, S. X., Wu, Y. G., Wu, B., Wyslouch, Z. Z., Xu, Z. L., Xue, D. S., Yan, B. Z., Yang, C. G., Yang, G., Yang, K. S., Yang, Q. Y., Yang, Z. Q., Yang, Q., Ye, C. H., Ye, S. C., Yeh, Z. W., Yin, J. M., You, C., Zabounidi, L., Zehnder, M., Zeng, Y., Zeng, D., Zhang, D. H., Zhang, S. Y., Zhang, Z. P., Zhang, J. F., Zhou, R. Y., Zhu, A., Zichichi, and J., Zoll

Subjects
Physics, Coupling constant, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, media_common.quotation_subject, Electron–positron annihilation, Detector, Charge (physics), 01 natural sciences, Asymmetry, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Atomic physics, 010306 general physics, Pseudovector, Particle Physics - Experiment, media_common, Lepton
Abstract

We have measured the partial widths of the Z 0 into lepton pairs, and the forward-backward charge asymmetry for the process e + e − → μ + μ − using the L3 detector at LEP. We obtain an average Γ ll of 83.0±2.1±1.1 MeV.From this result and the asymmetry measurement, we extract the values of the vector and axial vector couplings of the Z 0 to leptons: g rmv =−0.066 −0.027 +0.046 and g rmA = −0.495 −0.007 +0.007 .

Published
1990

16. Test of QED in e+e−→γγ at LEP

Author

C-Q. Li, Guofan Hu, M. Guanziroli, Sc Yeh, R. Bizzarri, S. Hancke, G. Fernandez, L. Baksay, L. Leistam, L.S. Hsu, Z. W. Yin, S. N. Ganguli, E. Shumilov, S. Röhner, M. Schöntag, W. Böhlen, F. Wittgenstein, V. Shoutko, C.Y. Chien, S. Beingessner, P. Berges, M. Maire, R. Liu, L. Ludovici, E. Drago, Yu. Galaktionov, M. Fabre, R.J. Wu, J.M. Lubbers, L. Niessen, Jozsef Toth, J. Lettry, Claudio Luci, D. Pandoulas, J. Alcaraz, Tariq Aziz, V. Shevchenko, O. Rind, J. M. Salicio, M. Bourquin, Hafeez R. Hoorani, Georgi Sultanov, Fl Linde, S. S. Gau, S. X. Wu, R. A. Khan, K. Strauch, X.R. Shi, Z.Y. Lin, B. P. Roe, P.V.K.S. Baba, H. L. Zhuang, X. Lue, T. Driever, V. P. Andreev, L. Li, G.J. Bobbink, D. Duchesneau, M. Chemarin, Alexander Malinin, Elisabetta Gallo, U. Micke, M. Harris, P.G. Seiler, J. Busenitz, G. M. Chen, F. Diez-Hedo, T. Spickermann, U. K. Chaturvedi, R. Malik, Chenliang Wang, Y. S. Lu, J.M. Qian, Y. J. Pei, D. Linnhofer, M. Tonutti, R.B. Sutton, Kajari Mazumdar, S. Khokhar, T.R. McMahon, Joachim Mnich, L. Urbàn, S. Rosier-Lees, T. Riemann, J.G. Branson, F. de Notaristefani, B. Stringfellow, Z.Z. Xu, P. Le Coultre, T. Foreman, K. Hangarter, T. Böhringer, Jérôme Rose, J.F. Li, L. J. Gutay, P. Duinker, R. Starosta, D. Luckey, Gy L. Bencze, G. Herten, Peter Denes, Reinhard W. Schulte, F. C. Erné, H. Suter, Y.F. Wang, W. Friebel, G. Faber, G. Schwering, Paolo Bagnaia, U. Becker, A. Bujak, Oliver Kornadt, M. Pohl, Bernard Ille, Crisostomo Sciacca, S. Reucroft, M. Steuer, J. H. Field, G. Trowitzsch, Marco Pieri, C. Rippich, C. Dionisi, A. Leike, G. Forconi, R. Magahiz, J. Weber, Marco Meschini, Valentin V. Khoze, M. J. Glaubman, Cheng Chen, D. Antreasyan, Pablo Garcia-Abia, L. Antonov, B. Stöhr, Qi An, S. Lökös, D.N. Mao, Xd Cai, K.S. Yang, F. J. Eppling, L. W. Jones, D. S. Yan, B. Spiess, Mingshui Chen, J. Berdugo, S. M. Ting, Alain Hervé, H. R. Gustafson, Ren-Yuan Zhu, Luciano Barone, C. Souyri, R. Leiste, J. Bao, I. Sheer, G. Landi, J. Krizmanic, A. Marchionni, C. Zaccardelli, J. D. Swain, Zhuoxiang Ren, M. Wadhwa, D. J. Schotanus, J. M. You, X. L. Wang, B. N. Jin, H. Nowak, An.A. Vorobyov, H.F. Chen, V. Lalieu, J.M. Thenard, A.M. Cartacci, H.R. Dimitrov, T. Matsuda, Th. Rombach, Simonetta Gentile, V.R. Krastev, E. Gonzalez, Kenneth Francis Read, Q.Y. Yang, N. Produit, A. Kuhn, Bernardo Adeva, V. Koutsenko, V. Morgunov, A. Bay, Carlo Civinini, H. El Mamouni, O. Adriani, M. Maolinbay, X.G. Li, M. Aguilar-Benitez, I. Duran, G.B. Mills, Samuel C.C. Ting, A. Gurtu, G. A. Yang, Dimitri Bourilkov, V. Commichau, H. J. Schreiber, M. Bocciolini, A. Hasan, G. Conforto, L. Z. Sun, T. Angelov, B. Monteleoni, Y. D. Xu, C. Spartiotis, M. Merk, Raffaello D'Alessandro, C. Grinnell, Lucas Taylor, A. A. Syed, K. Lanius, E. Jagel, Federico Carminati, B. L. Betev, J. D. Burger, G. Hu, Wolfgang Lohmann, H. Vogt, P. Arce, M. Gailloud, M. G. Alviggi, P. Vikas, R. Rosmalen, Herwig Schopper, J. Behrens, M. White, J. A. Bakken, Wolfgang Lange, G. Rahal-Callot, D. Goujon, D. Ren, P. J. Li, T. Kramer, L. Zehnder, W. Wallraff, Leonardo Merola, Steven Goldfarb, Fridolin Dittus, B. Bertucci, G. Passaleva, R. Morand, Y. H. Chang, J.P. Burq, George Alverson, Z. L. Xue, S. Patricelli, W. Kittel, Carlos Willmott, Yu. Kamyshkov, J. J. Blaising, Q. Ye, Luciano Romero, Bolek Wyslouch, Nicanor Colino, A. Böhm, T. Azemoon, Howard A. Stone, E. Dénes, R. Sehgal, T.S. Dai, Speranza Falciano, F. Tonisch, Mw Gruenewald, Q. Fan, J.B. Ye, F. Crijns, H. van der Graaf, G. Coignet, S. Banerjee, G.H. Wang, U. Vikas, G. Morand, K. Schultze, Vincenzo Innocente, Y. Mi, E. Tarkovsky, K. Sudhakar, D. Zhang, Bz Yang, A. Contin, U. Uwer, Egidio Longo, Marcos Cerrada, H. T. Li, A. Chen, J. Salicio, Zp Zhang, C. G. Yang, J.C. Sens, Sebastian Nowak, C. F. He, B. Borgia, D. Lanske, J. Ulbricht, A. van Laak, Alexander Savin, K. S. Kumar, H. Haan, G. Finocchiaro, Lamberto Luminari, Igor Vorobiev, V. Plyaskin, Giorgio Gratta, S. L. Wu, Panos A Razis, Vineet Kumar, E. Nagy, Konrad Deiters, P. Schmitz, A. Pevsner, I. Clare, S. C. Tonwar, W.G. Ma, J. Fehlmann, P. Blömeke, A. Arefiev, P. Göttlicher, W. Ruckstuhl, I. Vetlitsky, Barry Blumenfeld, M. M. Ilyas, Patricia McBride, Alexei Klimentov, Alberto Aloisio, A. Gordeev, M. Micke, D. P. Stickland, C. Camps, Valery Schegelsky, Antonino Zichichi, Aa Vorobyov, P. Lebrun, Thomas Ferguson, R.C. Ball, Adrian Biland, M. Vivargent, Christine Buisson, Pierre Lecomte, Z. M. Wang, G. Sartorelli, H. Anderhub, Y. Mir, C. H. Ye, Ph Fisher, Yanwen Liu, H. Rykaczewski, R. Fabbretti, K.D. Shmakov, S. J. Fan, K. Freudenreich, M. Schneegans, Z.Q. Yang, Y. Karyotakis, Andre Sopczak, K. N. Qureshi, Th. Meinholz, G. Sauvage, F. Marzano, W. Krenz, D. DiBitonto, A. Engler, M. MacDermott, Jean Fay, M. Capell, M. Dhina, D. Boutigny, R. Raghavan, D. Perret-Gallix, H. S. Fesefeldt, X. W. Tang, W.-D. Nowak, A. C. König, Y.P. Tong, Laurent Vuilleumier, E. Isiksal, P. A. Piroué, Harvey B Newman, I. C. Brock, M. A. Niaz, G. Mirabelli, E. Thomas, J.H. Wang, P. K. Malhotra, H. A. Rizvi, K. Hilgers, A. Kunin, K. Lübelsmeyer, Piero Spillantini, R. L. Sumner, Qiang Li, M. Hebert, J. Wenninger, M. Sachwitz, F. Ferroni, V. Pojidaev, G. Fanker, S. Schulte, R. Wilhelm, Nikita Smirnov, W. J. Metzger, Y. Zeng, Richard Mount, Zm Wang, F. Carbonara, U. Herten, C. J.W.P. Timmermans, P. Extermann, L. Martinez, R. de Asmundis, I. Leedom, H. Hofer, K. L. Tung, C. Maña, M. Lenti, A. L. Anderson, Ying Wu, J. F. Zhou, Qun Wang, F. Cesaroni, J. Y. Liao, J. Schütte, F. Bruyant, M.L. Chen, R. Dolin, M. Fukushima, Marcella Diemoz, J. M. Le Goff, P.M. Levchenko, Z.F. Gong, G. Von Dardel, D. Kirkby, J. A. Rubio, A. Degré, P. Marchesini, Ming Zeng, M. Röhner, Y.F. Mao, R. T. Van de Walle, E. Valente, R. Weill, D. McNally, X. Leytens, G. Viertel, Hans J. Vogel, S. Morganti, J. Schwenke, X. Y. Cui, J. Perrier, M. Möller, G. Chiefari, S. Shevchenko, M. Vollmar, S. Lanzano, D. Wright, J.P. Martin, T.J. Wenaus, Manjit Kaur, H. Akbari, Daqiang Zhang, G. Paternoster, D.W. Schmitz, G.G.G. Massaro, Robert Clare, Ph. Rosselet, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, and H. S. Chen

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Elementary particle, 7. Clean energy, 01 natural sciences, Massless particle, Nuclear physics, Particle decay, 0103 physical sciences, Center of mass, 010306 general physics, Boson
Abstract

We have measured the cross-section of the reaction e + e − → γγ at center of mass energies around the Z 0 mass. The results are in good agreement with QED predictions. For the QED cutoff parameters the limit of Λ + > 103 GeV and Λ − 118 GeV are found. For the decays Z 0 → γ ,Z 0 → π 0 γ , Z 0 → γγγ we find upper limits of 2.9 × 10 −4 ,2.9×10 −4 ,4.1×10 −4 and 1.2×10 −4 , respectively. All limits are at 95% CL.

Published
1990

17. Measurement of g$_A$ and g$_V$ the neutral current coupling constants to leptons

Author

R. Weill, L. Baksay, Y. Mi, R. Liu, Boleslaw Wyslouch, C.Y. Chien, E. Valente, K. Luebelsmeyer, A. Boehm, U. Micke, S. S. Gau, P.V.K.S. Baba, S. C. Tonwar, R. Mount, G. Viertel, P. J. Li, M. Guanziroli, A. L. Anderson, A. Arefev, E. Shumilov, J. Zoll, V. Shoutko, Thomas Ferguson, S. Morganti, Fridolin Dittus, John Krizmanic, Tariq Aziz, M. Tonutti, L.S. Hsu, Federico Carminati, Yu. Galaktionov, M. Vollmar, R. Leiste, J. Schwenke, X. Y. Cui, E. Dénes, G. Herten, Ying Wu, J. F. Zhou, P. Marchesini, J. Berdugo, J. Alcaraz, S.Y. Zhang, Ming Zeng, Jj Blaising, T. Kramer, T. Angelov, W. Friebel, G. Faber, Corinne Goy, D. Kaplan, U. Uwer, Y.F. Mao, A. Chen, R. T. Van de Walle, C-Q. Li, J. Salicio, G. Hu, P. Schmitz, Y. Peng, H. Haan, D. Harting, S. Patricelli, Cheng Chen, F.G. Hartjes, A. Kuhn, M. Roehner, F. de Notaristefani, D. Guesewell, X. L. Wang, S. Schulte, J. Busenitz, E. Nagy, C. Pols, L. Urbàn, Yu. Kamyshkov, Alexei Klimentov, M. Fabre, Carlos Willmott, Q. Ye, Jozsef Toth, Mw Gruenewald, Egidio Longo, I. Vetlitsky, S. Beingessner, W. Ruckstuhl, C. Camps, J. A. Bakken, Speranza Falciano, P. Bloemeke, D. P. Stickland, J. Lettry, Claudio Luci, Z. M. Wang, W. Boehlen, P. Schmitt, Crisostomo Sciacca, Dimitri Bourilkov, Zhuoxiang Ren, Marco Pieri, D. J. Schotanus, H. T. Li, C. Rippich, K. Freudenreich, R. Morand, Z. L. Xue, F. Cesaroni, X. Lue, U. K. Chaturvedi, Y. Mir, C. H. Ye, J. Onvlee, R.C. Ball, Adrian Biland, C. G. Yang, Elisabetta Gallo, J.M. Thenard, A.M. Cartacci, H.R. Dimitrov, Zhen Zhang, C. Dionisi, J. M. You, M.L. Chen, U. Becker, M. Gettner, J. Mnich, Alain Hervé, Raffaello D'Alessandro, C. Grinnell, K.D. Shmakov, S. J. Fan, N. Produit, Qi An, Y. S. Lu, Howard A. Stone, J. Y. Liao, T.S. Dai, J. D. Burger, G. Rahal-Callot, Leonardo Merola, W. Walk, G. Mirabelli, B. P. Roe, Chenliang Wang, Sandra Consuegra Rodríguez, Wen-Gan Ma, R. Bizzarri, S. Hancke, Ian Brock, M. M. Ilyas, A. Bay, D. Campana, a C. Koenig, A. Engler, Konrad Deiters, K.S. Yang, Th. Rombach, T. Azemoon, G. A. Yang, D.N. Mao, Simonetta Gentile, M. Capell, C. Souyri, B. Monteleoni, F. J. Eppling, L. W. Jones, C. Maña, V. Plyaskin, Marcella Diemoz, Piero Spillantini, D. S. Yan, W. Kittel, G. Von Dardel, Alberto Aloisio, A. Grimes, S. M. Ting, Carlo Civinini, J.M. Qian, M. Maolinbay, B. Stoehr, H. S. Fesefeldt, Jérôme Rose, R. A. Khan, G. Sauvage, Marcos Cerrada, K. Schultze, E. Tarkovsky, R. Wilhelm, Philip Kaaret, B. Borgia, F. Marzano, Kenneth Francis Read, G. Coignet, W. Krenz, P. Duinker, R. Fabbretti, X.G. Li, L. Leistam, S. Reucroft, D. Lanske, Th. Meinholz, M. Aguilar-Benitez, I. Duran, P. F. Klok, Sc Yeh, G. Fernandez, D. Pandoulas, G. Conforto, Oliver Kornadt, M. Pohl, Herwig Schopper, D. Antreasyan, H. Fenker, W. Wallraff, B. Auroy, Guofan Hu, H. F. Chen, Vincenzo Innocente, X. W. Tang, M. White, I. Sheer, P. A. Piroué, M. Gailloud, J. Bao, T. Spickermann, S. Kwan, M. MacDermott, V. P. Andreev, Harvey B Newman, C. Jakobs, F. Wittgenstein, M. Bourquin, K. Strauch, F. Bruyant, K. Hilgers, A. Heavey, G. Landi, J. G. Branson, Bernard Ille, X.R. Shi, L. Ludovici, E. Drago, L. Niessen, Sau Lan Wu, F. Ferroni, R. Magahiz, B. N. Jin, I. Clare, G.J. Bobbink, Steven Goldfarb, Y. Zeng, T. Driever, Z. W. Yin, M. Chemarin, M. Vivargent, M. Sachwitz, An.A. Vorobyov, T. Matsuda, R L. Sumner, S. N. Ganguli, P. Berges, A. Degré, M. Maire, J. D. Swain, Giovanni Paternoster, Ren-Yuan Zhu, Luciano Barone, M. Harris, R.B. Sutton, P. Vikas, P. McBride, D.H. Zhang, O. Adriani, G. Chiefari, U. Herten, L. Zehnder, M. Schneegans, P. Extermann, G. M. Chen, M. G. Alviggi, I. Leedom, B. Z. Yang, H. Hofer, L. Antonov, J. H. Field, S. Shevchenko, K. L. Tung, Yueh-Feng Liu, S. Banerjee, P. Goettlicher, F.C. Erné, Q.Y. Yang, K. Sudhakar, A. Gurtu, Helmut Vogel, B. Spiess, Lamberto Luminari, M. Schoentag, V. Lalieu, P. Lebrun, A. A. Syed, K. Lanius, J. Fehlmann, A. Marchionni, T. Riemann, V. Commichau, H. J. Schreiber, Pierre Lecomte, V. Koutsenko, M. Bocciolini, Charles Timmermans, V.R. Krastev, E. Jagel, P. Le Coultre, E. Gonzalez, F. Crijns, K. Hangarter, S. X. Wu, Y. H. Chang, J.P. Burq, George Alverson, Bernardo Adeva, R. Starosta, D. Luckey, Gy L. Bencze, Vineet Kumar, W.-D. Nowak, L. Li, Ph. Rosselet, D. Boutigny, Kajari Mazumdar, Reinhard W. Schulte, G. Schwering, Alexander Malinin, Marcel Merk, M. Steuer, X. D. Cai, G. Forconi, J.F. Li, L. Montanet, J. Schuette, J. Perrier, R.J. Wu, K N. Qureshi, J. Weber, H. Suter, Y.F. Wang, E. Perrin, B. L. Betev, D. Perret-Gallix, Valentin V. Khoze, G.B. Mills, G. Morand, J.C. Sens, R. Dolin, R. Raghavan, Y.P. Tong, Laurent Vuilleumier, E. Isiksal, M. Fukushima, G. H. Wang, S C C. Ting, J. Wenninger, V. Pojidaev, Nikita Smirnov, J. M. Le Goff, Z.F. Gong, J. A. Rubio, H. Anderhub, T.J. Wenaus, H. Akbari, T. Boehringer, M. J. Glaubman, Y. Karyotakis, C. Zabounidis, D. Goujon, D.W. Schmitz, Robert Clare, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, A. Sopczak, X. Leytens, M. Napolitano, H. S. Chen, S. Lanzano, D. Wright, J.P. Martin, Igor Vorobiev, M. Hebert, Panos A Razis, A. Gordeev, M. Micke, Z.Q. Yang, Mingshui Chen, V. Morgunov, D. Ren, A. Contin, Alexander Savin, Luciano Romero, Qian Wang, V. Shevchenko, C. F. He, P.G. Seiler, Giorgio Gratta, A. Pevsner, Peter Denes, Barry Blumenfeld, Paolo Bagnaia, Marco Meschini, E. Thomas, J.H. Wang, D. Kirkby, Zhongyukun Xu, A. Kunin, H. van der Graaf, T. Foreman, Y.J. Pei, Wolfgang Lohmann, H. Vogt, B. Bertucci, D. Zhang, J. Ulbricht, W. J. Metzger, Nicanor Colino, G.G.G. Massaro, F. Carbonara, L. Martinez, F. L. Linde, Valery Schegelsky, Antonino Zichichi, J.M. Lubbers, H. Rykaczewski, D. Linnhoefer, S. Rosier-Lees, S. Loekoes, Jean Fay, M. Dhina, Z. Y. Lin, 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), L3, and IHEF (IoP, FNWI)

Subjects
Coupling constant, Physics, Nuclear and High Energy Physics, Neutral current, 010308 nuclear & particles physics, media_common.quotation_subject, Electron–positron annihilation, Analytical chemistry, Elementary particle, 01 natural sciences, Asymmetry, Nuclear physics, Particle scattering, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Pseudovector, Particle Physics - Experiment, media_common, Lepton
Abstract

We have measured both the rates and the forward-backward asymmetry of l+l− from Z0→l+l− (where l=μ, τ) with the L3 detector. We obtained Γll=88±4±3 MeV and the vector neutral current coupling constant, gv=0.00±0.07 and the axial vector neutral current coupling constant, gA=−0.515±0.015.

Published
1990

18. Mass limits for excited electrons and muons from Z0 decay

Author

C.R. Wang, M. Fabre, L. Antonov, Georgi Sultanov, R. A. Khan, S. Schulte, T. Driever, A. Arefiev, J. Krizmanic, A. Marchionni, V. P. Andreev, R. W. Kraemer, V.R. Krastev, W. Ruckstuhl, D. P. Stickland, Aa Vorobyov, Y. Mir, C. H. Ye, E. Gonzalez, M. Chemarin, P. Marchesini, F. Marzano, S. Lanzano, Bernardo Adeva, W. Krenz, J.M. Thenard, A.M. Cartacci, H.R. Dimitrov, P.H. Fisher, M. J. Glaubman, M. Möller, G. Landi, H. El Mamouni, C. Zabounidis, G. Rahal-Callot, R.J. Wu, A. Sopczak, P. Vikas, S. X. Wu, C-Q. Li, P. Arce, D. Goujon, J.M. Lubbers, D. Pandoulas, T. McMahon, R. Bizzarri, S. Hancke, Ian Brock, F. DeNotaristefani, L. Leistam, M. Gruenewald, K. Schultze, S. Khokar, R. Rosmalen, P. Berges, E. G. Thomas, M. Maire, Ming Zeng, Vincenzo Innocente, E. Tarkovsky, D. Lanske, T. Spickermann, S. Kwan, K. Sudhakar, Ph. Rosselet, M. Steuer, G. Forconi, J. Weber, E. Perrin, T.J. Wenaus, L. Li, Hafeez R. Hoorani, Qi An, S. Lökös, Raffaello D'Alessandro, C. Grinnell, Sc Yeh, G. Fernandez, L. Urbàn, J.F. Li, Tariq Aziz, H. Suter, Y.F. Wang, C. Dionisi, Pablo Garcia-Abia, Alain Hervé, V. Plyaskin, H. Anderhub, K.S. Yang, Th. Rombach, S. Rosier-Lees, T. Riemann, M. Röhner, L.S. Hsu, G.B. Mills, Y. Mi, Valentin V. Khoze, Bernard Ille, A. C. König, Samuel C.C. Ting, H. Akbari, P. Le Coultre, T. Kramer, J. J. Blaising, J.C. Sens, D.N. Mao, Jozsef Toth, Steven Goldfarb, J. Lettry, Claudio Luci, X.L. Wang, M. Bourquin, C. Souyri, R. Magahiz, X. Lue, U. K. Chaturvedi, Y. S. Lu, Sebastian Nowak, B. Borgia, Leonardo Merola, W. Walk, K. Hangarter, R.B. Sutton, A. Bay, R. Starosta, Simonetta Gentile, Y.F. Mao, Elisabetta Gallo, K. Strauch, M. Gailloud, D. Luckey, Gy L. Bencze, F. Cesaroni, J. D. Swain, H. Haan, A. van Laak, K. N. Qureshi, G. Chiefari, S. Shevchenko, Carlo Civinini, M. Maolinbay, H.F. Chen, Reinhard W. Schulte, Jérôme Rose, Federico Carminati, J. Y. Liao, R. de Asmundis, Suresh C Tonwar, Luciano Romero, Qian Wang, P. McBride, T. Azemoon, G. Trowitzsch, Lawrence W. Jones, X.G. Li, W.-D. Nowak, C. Timmermans, G. Schwering, M. Aguilar-Benitez, I. Duran, Herwig Schopper, M. White, S. Reucroft, A. Leike, H. Fenker, Kenneth Francis Read, I. Vetlitsky, R.C. Ball, Adrian Biland, G. Herten, G. Conforto, C. F. He, X.R. Shi, I. Clare, J. Schütte, L. Montanet, K.D. Shmakov, S. J. Fan, W. Friebel, G. Faber, A. Bujak, D.W. Schmitz, G.G.G. Massaro, Oliver Kornadt, Marcos Cerrada, M. Pohl, W. Wallraff, P. Göttlicher, E. Valente, Crisostomo Sciacca, Marco Pieri, C. Rippich, Ren-Yuan Zhu, Guofan Hu, Corinne Goy, Dimitri Bourilkov, E. Dénes, B. P. Roe, Robert Clare, A. Pevsner, A. Böhm, Luciano Barone, D. McNally, Thomas Ferguson, D.J. Schotanus, G. Coignet, A. Engler, Barry Blumenfeld, Jd Burger, R. Malik, M. Capell, R. Liu, B. N. Jin, J. A. Bakken, H. Nowak, Valery Schegelsky, Antonino Zichichi, D. Perret-Gallix, H. S. Fesefeldt, Q.Y. Yang, Thomas Hebbeker, Paul Lecoq, X. Leytens, M. Napolitano, Laszlo Gutay, J. G. Branson, S. Beingessner, G. Viertel, H. Rykaczewski, B. L. Betev, R. Leiste, S. S. Gau, P.V.K.S. Baba, S. Patricelli, F. Bruyant, V. Morgunov, Q. Ye, A. Gurtu, Lamberto Luminari, J. Mnich, Y. Karyotakis, S. Morganti, W.G. Ma, Z. W. Yin, S. N. Ganguli, V. Commichau, H. J. Schreiber, H. S. Chen, J. Schwenke, J. Fehlmann, X. Y. Cui, L. Zehnder, D. Kaplan, G. Sauvage, A. Degré, T. Foreman, P. Duinker, G. Morand, Jean Fay, S. Banerjee, Giovanni Paternoster, M. Dhina, D. Boutigny, M. Bocciolini, E. Nagy, M. Vivargent, B.Z. Yang, Christine Buisson, C. Spartiotis, J. Bao, Pierre Lecomte, G. Sartorelli, F. Crijns, Zhuoxiang Ren, A. Hasan, Harvey B Newman, R. Raghavan, M.L. Chen, Z. M. Wang, Konrad Deiters, R. Dolin, M. Gettner, J.H. Wang, J. M. You, Alberto Aloisio, A. Ricker, Y.P. Tong, P. K. Malhotra, H. A. Rizvi, N. Produit, K. Hilgers, Laurent Vuilleumier, A. Heavey, Qiang Li, L. Baksay, A. Malinin, A. Grimes, A. Kunin, H. van der Graaf, C. Maña, Marcella Diemoz, T. Angelov, E. Isiksal, P.G. Seiler, R. Morand, Z. L. Xue, M. Vollmar, B. Spiess, Petr Levchenko, F. Diez-Hedo, M. Sachwitz, S. Röhner, F. Wittgenstein, J. Behrens, P. J. Li, Th. Meinholz, G. Von Dardel, G. A. Yang, K. Lanius, V.G. Shevchenko, G. Gratta, W. Kittel, Howard A. Stone, T.S. Dai, D. Wright, C.Y. Chien, U. Herten, D. Antreasyan, Peter Denes, X. W. Tang, I. Sheer, P. Lebrun, F. Tonisch, P. A. Piroué, R. Wilhelm, Fridolin Dittus, T. Böhringer, A. A. Syed, S. Linnhofer, G. Mirabelli, G. Hu, Q. Fan, R. L. Sumner, Wolfgang Lange, G. H. Wang, V. Lalieu, L. Ludovici, E. Drago, F. Carbonara, Paolo Bagnaia, B.C. Stringfellow, S.Y. Zhang, U. Becker, J. Wenninger, K. Lübelsmeyer, Piero Spillantini, L. Niessen, Sau Lan Wu, Z.Y. Lin, L. Martinez, Marco Meschini, D. Kirkby, V. Pojidaev, F. L. Linde, A. Kuhn, M. Harris, M. Fukushima, Y.J. Pei, Wolfgang Lohmann, H. Vogt, B. Bertucci, D. Zhang, J. Ulbricht, Nicanor Colino, Nikita Smirnov, Zm Wang, F. J. Eppling, D. S. Yan, V. Koutsenko, D. H. Zhang, G. Finocchiaro, U. Uwer, A. Chen, J. Salicio, Carlos Willmott, J. Perrier, S. M. Ting, Speranza Falciano, J.P. Burq, E. Jagel, H. T. Li, Yanwen Liu, Egidio Longo, M. Merk, G. J. Bobbink, J. M. Le Goff, M. M. Ilyas, B. Wyso̵uch, F. Ferroni, Y. Zeng, Z.F. Gong, R. Fabbretti, J. A. Rubio, P. Schmitz, Alexei Klimentov, C. Camps, K. Freudenreich, R. Weill, W. J. Metzger, J. M. Salicio, Yu. Galaktionov, U. Micke, J. Alcaraz, Cheng Chen, R. Mount, B. Stöhr, C. Zaccardelli, Helmut Vogel, J. Berdugo, Y. H. Chang, George Alverson, B. Monteleoni, R. T. Van de Walle, Vineet Kumar, A. L. Anderson, Kajari Mazumdar, Ying Wu, J. F. Zhou, M. Schneegans, M. MacDermott, Mingshui Chen, M. A. Niaz, Xd Cai, P. Extermann, I. Leedom, H. Hofer, K. L. Tung, Z.Z. Xu, D. Ren, U. Vikas, A. Contin, Alexander Savin, M. Guanziroli, J. P. Martin, E. Shumilov, J. Zoll, J. H. Field, M. Schöntag, W. Böhlen, V. Shoutko, J.M. Qian, Philip Kaaret, M. Tonutti, An.A. Vorobyov, Igor Vorobiev, T. Matsuda, M. Hebert, O. Adriani, M. G. Alviggi, Zhiqing Zhang, F. C. Erné, Yu. Kamyshkov, C. G. Yang, K. S. Kumar, Panos A Razis, P. Blömeke, A. Gordeev, M. Micke, Z.Q. Yang, IHEF (IoP, FNWI), 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and L3

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, 010308 nuclear & particles physics, Electron–positron annihilation, Detector, 01 natural sciences, Nuclear physics, Excited state, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Limit (mathematics), 010306 general physics, Particle Physics - Experiment
Abstract

We searched for excited electrons and muons from Z 0 decay in the channels ee→eeγ, ee→eeγγ, ee→(e)eγ, ee→μμγ, ee→μμγγ. using the L3 detector at LEP. The lower mass limit for e ∗ is 45.0 GeV and for μ ∗ 45.3 GeV. The upper limits of ll ∗ Z 0 and ll ∗ γ couplings at 95% CL have been determined up to m l∗ close to the Z 0 mass.

Published
1990

19. MEASUREMENT OF Z0-]BBBAR DECAY PROPERTIES

Author

W. Wallraff, Guofan Hu, Marco Meschini, D. Kirkby, A. Arefiev, H. Anderhub, Aa Vorobyov, J. G. Branson, J. Von Rango, E. Thomas, J.H. Wang, K. N. Qureshi, R. Leiste, Zhongyukun Xu, P. K. Malhotra, T. Foreman, A. Kunin, Y.J. Pei, Wolfgang Lohmann, H. Vogt, Z. W. Yin, J.M. Qian, S. N. Ganguli, H. van der Graaf, Philip Kaaret, B. Bertucci, D. Zhang, J. Ulbricht, A. Degré, Nicanor Colino, G. Herten, W. Friebel, G. Faber, D. Kaplan, W. J. Metzger, Corinne Goy, M. Guanziroli, F. Marzano, W.-D. Nowak, Petr Levchenko, R. Dolin, W. Krenz, G. Schwering, L. Montanet, G.G.G. Massaro, D. Pandoulas, U. Micke, D. Linnhofer, R. Mount, An.A. Vorobyov, T. Matsuda, A. Kuhn, J. P. Martin, F. Wittgenstein, F. Carbonara, O. Adriani, J. A. Bakken, Federico Carminati, S. Beingessner, L. Ludovici, J. Mnich, L. Martinez, E. Shumilov, J. Zoll, E. Drago, M. Elkacimi, P. Duinker, J. Bao, L. Niessen, F. L. Linde, M. Fukushima, Raffaello D'Alessandro, R. Morand, Z. L. Xue, M. Schöntag, W. Böhlen, Samuel C.C. Ting, V. Shoutko, T. Driever, T. Kramer, Y. Mi, L. Urbàn, J. Berdugo, B. Spiess, D. Antreasyan, J. J. Blaising, G. Landi, M. J. Glaubman, L. Antonov, T. Spickermann, S. Kwan, S. Schulte, M. Harris, C. Grinnell, Leonardo Merola, Steven Goldfarb, R.B. Sutton, P. Schmitz, Howard A. Stone, Alexei Klimentov, J. M. Le Goff, D.H. Zhang, P. Vikas, T.S. Dai, V. Lalieu, H. Haan, M. Tonutti, P. J. Li, P. Lebrun, Dimitri Bourilkov, W. Walk, Mariagrazia Alviggi, C. Pols, Z.F. Gong, W. Ruckstuhl, C. Camps, Mingshui Chen, V. Plyaskin, S. C. Tonwar, R. De Asmudis, D.N. Mao, C. Souyri, Luciano Romero, Fridolin Dittus, B. Monteleoni, Yu. Kamyshkov, C. Zabounidis, Qian Wang, K. Freudenreich, Mw Gruenewald, Bernard Ille, V. Koutsenko, D. P. Stickland, D. Goujon, E. Dénes, A. Marchionni, Wen-Gan Ma, Qi An, S. Lökös, T. Azemoon, I. Vetlitsky, J. A. Rubio, R. Magahiz, Konrad Deiters, Y. Mir, C. H. Ye, P. Marchesini, V. Morgunov, J.M. Thenard, A.M. Cartacci, Thomas Ferguson, S. Patricelli, K.S. Yang, W. Kittel, J.P. Burq, C. G. Yang, C. F. He, K. Sudhakar, E. Jagel, S.Y. Zhang, R.C. Ball, Adrian Biland, H.R. Dimitrov, Th. Rombach, V.R. Krastev, S. Rosier-Lees, Ming Zeng, U. Uwer, Marcos Cerrada, F. Cesaroni, J. Y. Liao, J. D. Burger, E. Gonzalez, B. Borgia, M. Gailloud, D. Ren, T. Riemann, Q. Ye, B. N. Jin, S. X. Wu, G. Sauvage, A. van Laak, Simonetta Gentile, A. Chen, Alberto Aloisio, K.D. Shmakov, S. J. Fan, A. Pevsner, A. Grimes, P. McBride, G. Rahal-Callot, P. Le Coultre, A. Sopczak, X. Leytens, J. Salicio, M. Röhner, J. Schütte, A. Contin, Ph. Rosselet, S. Lanzano, Bernardo Adeva, X. L. Wang, E. Nagy, Harvey B Newman, M. Steuer, B. P. Roe, L.S. Hsu, K. Hangarter, G. Forconi, Alexander Savin, J. Weber, Ren-Yuan Zhu, Luciano Barone, Barry Blumenfeld, M. Vivargent, Christine Buisson, Kenneth Francis Read, M. Schneegans, G. Conforto, K. Hilgers, A. Heavey, C-Q. Li, Th. Meinholz, A. Engler, K. Schultze, E. Tarkovsky, F. Bruyant, Valery Schegelsky, E. Perrin, Antonino Zichichi, J.M. Lubbers, A. Böhm, Y.F. Mao, X.R. Shi, Z. M. Wang, I. Clare, M. Sachwitz, Yu. Galaktionov, M. Capell, Jozsef Toth, J. Lettry, Claudio Luci, F.C. Erné, Q.Y. Yang, A. Gurtu, Elisabetta Gallo, X. W. Tang, D. Güsewell, R. Starosta, D. Luckey, Gy L. Bencze, H. Rykaczewski, F. Ferroni, R. T. Van de Walle, R. Liu, V. Commichau, H. J. Schreiber, D. Lanske, Y. Karyotakis, Igor Vorobiev, D. Perret-Gallix, J. Alcaraz, H. S. Fesefeldt, Sc Yeh, G. Fernandez, I. Sheer, R. Bizzarri, S. Hancke, P. A. Piroué, Ian Brock, Y. Zeng, P. Göttlicher, U. Herten, F. DeNotaristefani, G.B. Mills, G. Coignet, Reinhard W. Schulte, C. Dionisi, Alain Hervé, L. Leistam, Chenliang Wang, S. S. Gau, M. Hebert, Panos A Razis, L. Baksay, Tariq Aziz, M. Bocciolini, P.V.K.S. Baba, Oliver Kornadt, M. Pohl, Jean Fay, M. Bourquin, Cheng Chen, P.G. Seiler, M. Dhina, D. Boutigny, A. Bay, D. Campana, R.J. Wu, Peter Denes, K. Strauch, S. Reucroft, G. Gratta, P. Blömeke, H. Fenker, A. Gordeev, M. Micke, Carlo Civinini, Z. Y. Lin, B. Stöhr, Boleslaw Wyslouch, C.Y. Chien, M.L. Chen, Paolo Bagnaia, M. Maolinbay, Lamberto Luminari, P. Berges, T. Angelov, X.G. Li, Kajari Mazumdar, X. D. Cai, M. Gettner, X. Lue, M. Aguilar-Benitez, I. Duran, P. F. Klok, M. Maire, G. Hu, C. Maña, Marcella Diemoz, Crisostomo Sciacca, Marco Pieri, Herwig Schopper, U. K. Chaturvedi, J. Fehlmann, L. Li, Y. S. Lu, M. White, Z.Q. Yang, Alexander Malinin, C. Rippich, Carlos Willmott, G. Von Dardel, Jérôme Rose, R. Wilhelm, J. H. Field, Pierre Lecomte, J.F. Li, Y. H. Chang, H. T. Li, George Alverson, T. Böhringer, E. Valente, M. Fabre, Charles Timmermans, H. Suter, Y.F. Wang, Vineet Kumar, G. Viertel, Georgi Sultanov, R. A. Khan, P. Schmitt, Valentin V. Khoze, Zhen Zhang, Hans J. Vogel, S. Morganti, L. Zehnder, U. Becker, G. Mirabelli, V. P. Andreev, J. Schwenke, Sandra Consuegra Rodríguez, G.J. Bobbink, X. Y. Cui, M. Chemarin, K. Lübelsmeyer, Piero Spillantini, S. Banerjee, G. M. Chen, F. J. Eppling, L. W. Jones, D. S. Yan, S. M. Ting, M. Vollmar, D. Wright, H. F. Chen, G. Chiefari, S. Shevchenko, V. Sheevchenko, Zhuoxiang Ren, D. J. Schotanus, J. M. You, N. Produit, G. A. Yang, A. A. Syed, K. Lanius, F. Crijns, Marcel Merk, J. Perrier, Egidio Longo, M. M. Ilyas, R. Fabbretti, J.C. Sens, R. Weill, R. Raghavan, A. C. König, Y.P. Tong, Laurent Vuilleumier, E. Isiksal, A. L. Anderson, R. L. Sumner, G. H. Wang, J. Wenninger, Ying Wu, J. F. Zhou, M. MacDermott, V. Pojidaev, Nikita Smirnov, P. Extermann, I. Leedom, B. Z. Yang, H. Hofer, K. L. Tung, V. Innocente, B. L. Betev, G. Morand, S. L. Wu, Speranza Falciano, Yanwen Liu, T.J. Wenaus, H. Akbari, G. Paternoster, D.W. Schmitz, Robert Clare, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, H. S. Chen, B., Adeva, O., Adriani, M., Aguilarbenitez, H., Akbari, J., Alcaraz, Aloisio, Alberto, G., Alverson, Alviggi, Mariagrazia, Q., An, H., Anderhub, A. L., Anderson, V. P., Andreev, T., Angelov, L., Antonov, D., Antreasyan, A., Arefiev, T., Azemoon, T., Aziz, P. V., K., P., Bagnaia, J. A., Bakken, L., Baksay, R. C., Ball, S., Banerjee, J., Bao, L., Barone, A., Bay, U., Becker, S., Beingessner, G. L., Bencze, J., Berdugo, P., Berge, B., Bertucci, B. L., Betev, A., Biland, R., Bizzarri, J. J., Blaising, P., Blomeke, B., Blumenfeld, G. J., Bobbink, M., Bocciolini, W., Bohlen, A., Bohm, T., Bohringer, B., Borgia, D., Bourilkov, M., Bourquin, D., Boutigny, J. G., Branson, I. C., Brock, F., Bruyant, C., Buisson, J. D., Burger, J. P., Burq, X. D., Cai, D., Campana, C., Camp, M., Capell, F., Carbonara, F., Carminati, A. M., Cartacci, M., Cerrada, F., Cesaroni, Y. H., Chang, U. K., Chaturvedi, M., Chemarin, A., Chen, C., Chen, G. M., Chen, H. F., Chen, H. S., Chen, M., Chen, M. L., Chen, Chiefari, Giovanni, C. Y., Chien, C., Civinini, I., Clare, R., Clare, G., Coignet, N., Colino, V., Commichau, G., Conforto, A., Contin, F., Crijn, X. Y., Cui, T. S., Dai, R., Dalessandro, R., Deasmudi, A., Degre, K., Deiter, E., Dene, P., Dene, F., Denotaristefani, M., Dhina, M., Diemoz, H. R., Dimitrov, C., Dionisi, F., Dittu, R., Dolin, E., Drago, T., Driever, P., Duinker, I., Duran, M., Elkacimi, A., Engler, F. J., Eppling, F. C., Erne, P., Extermann, R., Fabbretti, G., Faber, S., Falciano, S. J., Fan, M., Fabre, J., Fay, J., Fehlmann, H., Fenker, T., Ferguson, G., Fernandez, F., Ferroni, H., Fesefeldt, J., Field, G., Forconi, T., Foreman, K., Freudenreich, W., Friebel, M., Fukushima, M., Gailloud, Y., Galaktionov, E., Gallo, S. N., Ganguli, S. S., Gau, S., Gentile, M., Gettner, M., Glaubman, S., Goldfarb, Z. F., Gong, E., Gonzalez, A., Gordeev, P., Gottlicher, D., Goujon, C., Goy, G., Gratta, A., Grime, C., Grinnell, M., Gruenewald, M., Guanziroli, A., Gurtu, D., Gusewell, H., Haan, S., Hancke, K., Hangarter, M., Harri, C. F., He, A., Heavey, T., Hebbeker, M., Hebert, G., Herten, U., Herten, A., Herve, K., Hilger, H., Hofer, L. S., Hsu, G., Hu, G. Q., Hu, B., Ille, M. M., Ilya, V., Innocente, E., Isiksal, E., Jagel, B. N., Jin, L. W., Jone, P., Kaaret, R. A., Khan, Y., Kamyshkov, D., Kaplan, Y., Karyotaki, V., Khoze, D., Kirkby, W., Kittel, A., Klimentov, P. F., Klok, A. C., Konig, O., Kornadt, V., Koutsenko, R. W., Kraemer, T., Kramer, V. R., Krastev, W., Krenz, A., Kuhn, V., Kumar, A., Kunin, S., Kwan, A., Vanlaak, V., Lalieu, G., Landi, K., Laniu, D., Lanske, S., Lanzano, P., Lebrun, P., Lecomte, P., Lecoq, P., Lecoultre, I., Leedom, J. M., Legoff, L., Leistam, R., Leiste, J., Lettry, P. M., Levchenko, X., Leyten, C., Li, H. T., Li, J. F., Li, L., Li, P. J., Li, X. G., Li, J. Y., Liao, R., Liu, Y., Liu, Z. Y., Lin, F. L., Linde, D., Linnhofer, W., Lohmann, S., Loko, E., Longo, Y. S., Lu, J. M., Lubber, K., Lubelsmeyer, C., Luci, D., Luckey, L., Ludovici, X., Lue, L., Luminari, W. G., Ma, M., Macdermott, R., Magahiz, M., Maire, P. K., Malhotra, A., Malinin, C., Mana, D. N., Mao, Y. F., Mao, M., Maolinbay, P., Marchesini, A., Marchionni, J. P., Martin, L., Martinez, F., Marzano, G. G., G., T., Matsuda, K., Mazumdar, P., Mcbride, T., Meinholz, M., Merk, Merola, Leonardo, M., Meschini, W. J., Metzger, Y., Mi, M., Micke, U., Micke, G. B., Mill, Y., Mir, G., Mirabelli, J., Mnich, L., Montanet, B., Monteleoni, G., Morand, R., Morand, S., Morganti, V., Morgunov, R., Mount, E., Nagy, Napolitano, Marco, H., Newman, L., Niessen, W. D., Nowak, D., Pandoula, Paternoster, Giovanni, Patricelli, Sergio, Y. J., Pei, D., Perretgallix, J., Perrier, E., Perrin, A., Pevsner, M., Pieri, P. A., Piroue, V., Plyaskin, M., Pohl, V., Pojidaev, C. L., A., N., Produit, J. M., Qian, K. N., Qureshi, R., Raghavan, G., Rahalcallot, J., Vonrango, P., Razi, K., Read, D., Ren, Z., Ren, S., Reucroft, T., Riemann, C., Rippich, S., Rodriguez, B. P., Roe, M., Rohner, T., Rombach, L., Romero, J., Rose, S., Rosierlee, P., Rosselet, J. A., Rubio, W., Ruckstuhl, H., Rykaczewski, M., Sachwitz, J., Salicio, G., Sauvage, A., Savin, V., Schegelsky, P., Schmitt, D., Schmitz, P., Schmitz, M., Schneegan, M., Schontag, H., Schopper, D. J., Schotanu, H. J., Schreiber, R., Schulte, S., Schulte, K., Schultze, J., Schutte, J., Schwenke, G., Schwering, Sciacca, Crisostomo, P. G., Seiler, J. C., Sen, I., Sheer, V., Shevchenko, S., Shevchenko, X. R., Shi, K., Shmakov, V., Shoutko, E., Shumilov, N., Smirnov, A., Sopczak, C., Souyri, T., Spickermann, B., Spie, P., Spillantini, R., Starosta, M., Steuer, D. P., Stickland, B., Stohr, H., Stone, K., Strauch, K., Sudhakar, G., Sultanov, R. L., Sumner, H., Suter, R. B., Sutton, A. A., Syed, X. W., Tang, E., Tarkovsky, J. M., Thenard, E., Thoma, C., Timmerman, S. C., C., S. M., Ting, Y. P., Tong, M., Tonutti, S. C., Tonwar, J., Toth, K. L., Tung, J., Ulbricht, L., Urban, U., Uwer, E., Valente, R. T., Vandewalle, H., Vandergraaf, I., Vetlitsky, G., Viertel, P., Vika, M., Vivargent, H., Vogel, H., Vogt, M., Vollmar, G., Vondardel, I., Vorobiev, A. A., Vorobyov, L., Vuilleumier, W., Walk, W., Wallraff, C. R., Wang, G. H., Wang, J. H., Wang, Q. F., Wang, X. L., Wang, Y. F., Wang, Z. M., Wang, J., Weber, R., Weill, T. J., Wenau, J., Wenninger, M., White, R., Wilhelm, C., Willmott, F., Wittgenstein, D., Wright, R. J., Wu, S. L., Wu, S. X., Wu, Y. G., Wu, B., Wyslouch, Z. Z., Xu, Z. L., Xue, D. S., Yan, B. Z., Yang, C. G., Yang, G., Yang, K. S., Yang, Q. Y., Yang, Z. Q., Yang, Q., Ye, C. H., Ye, S. C., Yeh, Z. W., Yin, J. M., You, C., Zabounidi, L., Zehnder, M., Zeng, Y., Zeng, D., Zhang, D. H., Zhang, S. Y., Zhang, Z. P., Zhang, J. F., Zhou, R. Y., Zhu, A., Zichichi, and J., Zoll

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Muon, media_common.quotation_subject, Electron–positron annihilation, Hadron, Charge (physics), Asymmetry, Bottom quark, media_common
Abstract

We have measured the properties of Z0 → b b decays using a sample of 944 inclusive muon events, corresponding to 18 000 hadron events obtained with the L3 detector at LEP. We measured the partial decay width of the Z0 into b b , Γ b b =353±48 MeV , and we determined the vector coupling of the Z0 to the b quark; grmv2(b)=0.095±0.047. We measured the forward-backward charge asymmetry in e+e− → b b events at √s≈Mv, and obtained A b b =13.3±9.9% .

Published
1990

20. A test of QCD based on 4-jet events from Z$^0$ decays

Author

B. Adeva, O. Adriani, M. Aguilar-Benitez, H. Akbari, J. Alcaraz, A. Aloisio, G. Alverson, M.G. Alviggi, Q. An, H. Anderhub, A.L. Anderson, V.P. Andreev, T. Angelov, L. Antonov, D. Antreasyan, P. Arce, A. Arefiev, T. Azemoon, T. Aziz, P.V.K.S. Baba, P. Bagnaia, J.A. Bakken, L. Baksay, R.C. Ball, S. Banerjee, J. Bao, L. Barone, A. Bay, U. Becker, J. Behrens, S. Beingessner, Gy.L. Bencze, J. Berdugo, P. Berges, B. Bertucci, B.L. Betev, A. Biland, R. Bizzarri, J.J. Blaising, P. Blömeke, B. Blumenfeld, G.J. Bobbink, M. Bocciolini, W. Böhlen, A. Böhm, T. Böhringer, B. Borgia, D. Bourilkov, M. Bourquin, D. Boutigny, J.G. Branson, I.C. Brock, F. Bruyant, C. Buisson, A. Bujak, J.D. Burger, J.P. Burg, J. Busenitz, X.D. Cai, C. Camps, M. Capell, F. Carbonara, F. Carminati, A.M. Cartacci, M. Cerrada, F. Cesaroni, Y.H. Chang, U.K. Chaturvedi, M. Chemarin, A. Chen, C. Chen, G.M. Chen, H.F. Chen, H.S. Chen, M. Chen, M.L. Chen, G. Chiefari, C.Y. Chien, C. Civinini, I. Clare, R. Clare, G. Coignet, N. Colino, V. Commichau, G. Conforto, A. Contin, F. Crijns, X.Y. Cui, T.S. Dai, R. D'Alessandro, R. de Asmundis, A. Degré, K. Deiters, E. Dénes, P. Denes, F. DeNotaristefani, M. Dhina, D. DiBitonto, M. Diemoz, F. Diez-Hedo, H.R. Dimitrov, C. Dionisi, F. Dittus, R. Dolin, E. Drago, T. Driever, D. Duchesneau, P. Duinker, I. Duran, H. El Mamouni, A. Engler, F.J. Eppling, F.C. Erné, P. Extermann, R. Fabbretti, G. Faber, S. Falciano, Q. Fan, S.J. Fan, M. Fabre, J. Fay, J. Fehlmann, H. Fenker, T. Ferguson, G. Fernandez, F. Ferroni, H. Fesefeldt, J. Field, G. Finocchiaro, P.H. Fisher, G. Forconi, T. Foreman, K. Freudenreich, W. Friebel, M. Fukushima, M. Gailloud, Yu. Galaktionov, E. Gallo, S.N. Ganguli, P. Garcia-Abia, S.S. Gau, S. Gentile, M. Gettner, M. Glaubman, S. Goldfarb, Z.F. Gong, E. Gonzalez, A. Gordeev, P. Göttlicher, D. Goujon, C. Goy, G. Gratta, A. Grimes, C. Grinnell, M. Gruenewald, M. Guanziroli, A. Gurtu, L.J. Gutay, H. Haan, S. Hancke, K. Hangarter, M. Harris, A. Hasan, C.F. He, A. Heavey, T. Hebbeker, M. Hebert, G. Herten, U. Herten, A. Hervé, K. Hilgers, H. Hofer, H. Hoorani, L.S. Hsu, G. Hu, G.Q. Hu, B. Ille, M.M. Ilyas, V. Innocente, E. Isiksal, E. Jagel, B.N. Jin, L.W. Jones, P. Kaaret, R.A. Khan, Yu. Kamyshkov, D. Kaplan, Y. Karyotakis, M. Kaur, S. Khokhar, V. Khoze, D. Kirkby, W. Kittel, A. Klimentov, A.C. König, O. Kornadt, V. Koutsenko, R.W. Kraemer, T. Kramer, V.R. Krastev, W. Krenz, J. Krizmanic, A. Kuhn, K.S. Kumar, V. Kumar, A. Kunin, S. Kwan, A. van Laak, V. Lalieu, G. Landi, K. Lanius, W. Lange, D. Lanske, S. Lanzano, P. Lebrun, P. Lecomte, P. Lecoq, P. Le Coultre, I. Leedom, J.M. Le Goff, A. Leike, L. Leistam, R. Leiste, J. Lettry, P.M. Levchenko, X. Leytens, C. Li, H.T. Li, J.F. Li, L. Li, P.J. Li, Q. Li, X.G. Li, J.Y. Liao, Z.Y. Lin, F.L. Linde, D. Linnhofer, R. Liu, Y. Liu, W. Lohmann, S. Lökös, E. Longo, Y.S. Lu, J.M. Lubbers, K. Lübelsmeyer, C. Luci, D. Luckey, L. Ludovici, X. Lue, L. Luminari, W.G. Ma, M. MacDermott, R. Magahiz, M. Maire, P.K. Malhotra, R. Malik, A. Malinin, C. Maña, D.N. Mao, Y.F. Mao, M. Maolinbay, P. Marchesini, A. Marchionni, J.P. Martin, L. Martinez, F. Marzano, G.G.G. Massaro, T. Matsuda, K. Mazumdar, P. McBride, T. McMahon, D. McNally, Th. Meinholz, M. Merk, L. Merola, M. Meschini, W.J. Metzger, Y. Mi, M. Micke, U. Micke, G.B. Mills, Y. Mir, G. Mirabelli, J. Mnich, M. Möller, L. Montanet, B. Monteleoni, G. Morand, R. Morand, S. Morganti, V. Morgunov, R. Mount, E. Nagy, M. Napolitano, H. Newman, M.A. Niaz, L. Niessen, W.D. Nowak, H. Nowak, S. Nowak, D. Pandoulas, G. Paternoster, S. Patricelli, Y.J. Pei, D. Perret-Gallix, J. Perrier, A. Pevsner, M. Pieri, P.A. Piroué, V. Plyaskin, M. Pohl, V. Pojidaev, N. Produit, J.M. Qian, K.N. Qureshi, R. Raghavan, G. Rahal-Callot, P. Razis, K. Read, D. Ren, Z. Ren, S. Reucroft, A. Ricker, T. Riemann, C. Rippich, H.A. Rizvi, B.P. Roe, M. Röhner, S. Röhner, Th. Rombach, L. Romero, J. Rose, S. Rosier-Lees, R. Rosmalen, Ph. Rosselet, J.A. Rubio, W. Ruckstuhl, H. Rykaczewski, M. Sachwitz, J. Salicio, J.M. Salicio, G. Sartorelli, G. Sauvage, A. Savin, V. Schegelsky, D. Schmitz, P. Schmitz, M. Schneegans, M. Schöntag, H. Schopper, D.J. Schotanus, H.J. Schreiber, R. Schulte, S. Schulte, K. Schultze, J. Schütte, J. Schwenke, G. Schwering, C. Sciacca, R. Sehgal, P.G. Seiler, J.C. Sens, I. Sheer, V. Shevchenko, S. Shevchenko, X.R. Shi, K. Shmakov, V. Shoutko, E. Shumilov, N. Smirnov, A. Sopczak, C. Souyri, C. Spartiotis, T. Spickermann, B. Spiess, P. Spillantini, R. Starosta, M. Steuer, D.P. Stickland, B. Stöhr, H. Stone, K. Strauch, B.C. Stringfellow, K. Sudhakar, G. Sultanov, R.L. Sumner, H. Suter, R.B. Sutton, J.D. Swain, A.A. Syed, X.W. Tang, E. Tarkovsky, J.M. Thenard, E. Thomas, C. Timmermans, Samuel C.C. Ting, S.M. Ting, Y.P. Tong, F. Tonisch, M. Tonutti, S.C. Tonwar, J. Tòth, G. Trowitzsch, K.L. Tung, J. Ulbricht, L. Urbán, U. Uwer, E. Valente, R.T. Van de Walle, H. van der Graaf, I. Vetlitsky, G. Viertel, P. Vikas, U. Vikas, M. Vivargent, H. Vogel, H. Vogt, M. Vollmar, G. Von Dardel, I. Vorobiev, A.A. Vorobyov, An.A. Vorobyov, L. Vuilleumier, M. Wadhwa, W. Walk, W. Wallraff, C.R. Wang, G.H. Wang, J.H. Wang, Q.F. Wang, X.L. Wang, Y.F. Wang, Z. Wang, Z.M. Wang, J. Weber, R. Weill, T.J. Wenaus, J. Wenninger, M. White, R. Wilhelm, C. Willmott, F. Wittgenstein, D. Wright, R.J. Wu, S.L. Wu, S.X. Wu, Y.G. Wu, B. Wysłouch, Z.Z. Xu, Z.L. Xue, D.S. Yan, B.Z. Yang, C.G. Yang, G. Yang, K.S. Yang, Q.Y. Yang, Z.Q. Yang, Q. Ye, C.H. Ye, S.C. Yeh, Z.W. Yin, J.M. You, C. Zabounidis, C. Zaccardelli, L. Zehnder, M. Zeng, Y. Zeng, D. Zhang, D.H. Zhang, S.Y. Zhang, Z.P. Zhang, J.F. Zhou, R.Y. Zhu, A. Zichichi, J. Zoll, 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and L3

Subjects
Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, 01 natural sciences, Particle Physics - Experiment
Published
1990

21. A precision measurement of the number of neutrino species

Author

L.S. Hsu, Konrad Deiters, Yu. Galaktionov, Alberto Aloisio, A. Grimes, Valery Schegelsky, Antonino Zichichi, Ph Fisher, H. Rykaczewski, M. Fabre, Th. Meinholz, J. Alcaraz, Helmut Vogel, Federico Carminati, Jozsef Toth, A. Heavey, A. A. Syed, J. Lettry, Claudio Luci, Wolfgang Lange, B.C. Stringfellow, Qiang Li, Y. Karyotakis, R.C. Ball, Adrian Biland, Georgi Sultanov, F. Crijns, X. W. Tang, I. Sheer, P. A. Piroué, Elisabetta Gallo, M. J. Glaubman, M. Möller, Lamberto Luminari, G. Finocchiaro, Marcel Merk, H. F. Chen, R. A. Khan, Kajari Mazumdar, J. Perrier, R. Malik, K.D. Shmakov, G. Chiefari, L. Urbàn, S. Shevchenko, Chenliang Wang, S. Khokhar, T.R. McMahon, M. Wadhwa, D. J. Schotanus, J. M. You, N. Produit, G. A. Yang, Jean Fay, M. Sachwitz, M. Dhina, D. Boutigny, H. El Mamouni, Cheng Chen, Ren-Yuan Zhu, Tariq Aziz, B. Stöhr, C. Zaccardelli, S. Reucroft, Luciano Barone, J. Fehlmann, Z. Y. Lin, V. P. Andreev, A. Engler, A. Leike, C. Zabounidis, S. C. Yeh, H. Fenker, S. Patricelli, Xd Cai, Pierre Lecomte, G.J. Bobbink, J.Y. Liao, E. Thomas, J.H. Wang, D.N. Mao, C. Souyri, S.J. Fan, M. Capell, C. Dionisi, Yu. Kamyshkov, F.C. Erné, Q.Y. Yang, B. L. Betev, Zhongyukun Xu, P. K. Malhotra, H. A. Rizvi, A. Gurtu, A. Kunin, H. van der Graaf, Q. Ye, P. Arce, D. Goujon, G. Sartorelli, M.L. Chen, G. Landi, U. Herten, R. Dolin, D. Perret-Gallix, H. S. Fesefeldt, F. Ferroni, V. Commichau, H. J. Schreiber, Pablo Garcia-Abia, Charles Timmermans, Raffaello D'Alessandro, C. Grinnell, Mw Gruenewald, Crisostomo Sciacca, D. Pandoulas, Marco Pieri, D. Antreasyan, G. M. Chen, Y. Zeng, M. Bocciolini, C. Rippich, Vincenzo Innocente, Alain Hervé, W. J. Metzger, P. Vikas, G. Morand, Qi An, M. Fukushima, Leonardo Merola, W. Walk, M. Gettner, S. Beingessner, T. Spickermann, S. Kwan, A. Hasan, G.G.G. Massaro, M. Gailloud, S. Lökös, C. G. Yang, T. Azemoon, X. Leytens, B. N. Jin, K.S. Yang, H. Nowak, F. Carbonara, R.J. Wu, A. Sopczak, J. Behrens, L. Martinez, J. Mnich, Bernard Ille, A. Bay, J.C. Sens, Th. Rombach, R. L. Summer, R. Raghavan, R. Magahiz, T. Kramer, C. Maña, Marcella Diemoz, L. Baksay, F. L. Linde, P. Lebrun, Fridolin Dittus, J. J. Blaising, K. Sudhakar, J. M. Le Goff, A. C. König, Y.P. Tong, L. Zehnder, Laurent Vuilleumier, P. Schmitz, E. Isiksal, K. S. Kumar, Simonetta Gentile, J. D. Swain, H. Anderhub, Marcos Cerrada, Z.F. Gong, P. Duinker, S. Banerjee, P. McBride, Alexei Klimentov, Carlo Civinini, M. Maolinbay, G. Gratta, C. Camps, H. Haan, Dimitri Bourilkov, Boleslaw Wyslouch, Luciano Romero, Qian Wang, S.Y. Zhang, C.Y. Chien, J. A. Rubio, K. Freudenreich, Y. Mi, G. H. Wang, J. Bao, F. Cesaroni, Kenneth Francis Read, I. Vetlitsky, U. Uwer, G. Conforto, J. Wenninger, X.G. Li, M. Aguilar-Benitez, I. Duran, J.M. Lubbers, A. Böhm, J.M. Qian, Philip Kaaret, G. Von Dardel, A. Chen, C. F. He, C-Q. Li, V. Pojidaev, G. Coignet, J. Salicio, S. C. Tonwar, Nikita Smirnov, L. J. Gutay, A. Pevsner, U. Becker, Zm Wang, R. Liu, Herwig Schopper, M. White, Barry Blumenfeld, R. de Asmundis, T. Böhringer, E. Valente, Thomas Ferguson, G. Sauvage, X. Lue, U. K. Chaturvedi, J. Schütte, S. S. Gau, P.V.K.S. Baba, Zhen Zhang, Speranza Falciano, F. J. Eppling, L. W. Jones, D. S. Yan, Y. S. Lu, R. Bizzarri, S. Hancke, K. N. Qureshi, Harvey B Newman, E. Dénes, R. Sehgal, An.A. Vorobyov, T. Matsuda, G. Mirabelli, Marco Meschini, Ian Brock, M. Chermarin, D. McNally, D. Kirkby, K. Hilgers, S. M. Ting, Jérôme Rose, S. X. Wu, F. DeNotaristefani, Egidio Longo, R. Wilhelm, Yanwen Liu, Y. H. Chang, W.-D. Nowak, George Alverson, W. Ruckstuhl, J. H. Field, G. Trowitzsch, D. P. Stickland, F. Bruyant, L. Leistam, O. Adriani, M. G. Alviggi, G. Viertel, G. Schwering, Vineet Kumar, T. Foreman, K. Lübelsmeyer, Piero Spillantini, Hafeez R. Hoorani, L. Montanet, Y. Mir, C. H. Ye, Y.J. Pei, M. M. Ilyas, G. Fernandez, D.W. Schmitz, Wolfgang Lohmann, H. Vogt, D. DiBitonto, Ph. Rosselet, B. Bertucci, D. Zhang, R. Rosmalen, S. Morganti, T. Angelov, M. Steuer, R. Fabbretti, J. Ulbricht, Nicanor Colino, X. L. Wang, E. Nagy, M. Vivargent, Christine Buisson, G. Forconi, J. Schwenke, J. Weber, W. Wallraff, M. MacDermott, Robert Clare, Guofan Hu, Thomas Hebbeker, X. Y. Cui, K. Lanius, M. A. Niaz, G. Hu, V. Shevchenko, Z. M. Wang, Paul Lecoq, R. W. Kraemer, M. Bourquin, M. Napolitano, P. Berges, P. Extermann, S. Rosier-Lees, T. Riemann, Z. Ren, P. Marchesini, I. Leedom, B. Z. Yang, J. G. Branson, K. Strauch, P.G. Seiler, G.B. Mills, A. Arefiev, H. Hofer, K. L. Tung, B. Monteleoni, Petr Levchenko, S. Röhner, F. Diez-Hedo, Peter Denes, Z. W. Yin, S. N. Ganguli, M. Maire, Ming Zeng, H. S. Chen, Aa Vorobyov, L. Li, R. Weill, P. Le Coultre, A. Degré, Giovanni Paternoster, Paolo Bagnaia, W. Kittel, D. Duchesneau, Carlos Willmott, K. Hangarter, F. Wittgenstein, L. Ludovici, E. Drago, M. Röhner, Alexander Malinin, B. Spiess, L. Niessen, Sau Lan Wu, T. Driever, H. T. Li, P.J. Li, V. Lalieu, F. Marzano, Y.F. Mao, W. Krenz, A. L. Anderson, V. Koutsenko, J.M. Thenard, A.M. Cartacci, H.R. Dimitrov, M. Harris, J.P. Burq, T.J. Wenaus, E. Jagel, Manjit Kaur, Ying Wu, J. F. Zhou, Samuel C.C. Ting, J.F. Li, R. T. Van de Walle, J. D. Burger, Steven Goldfarb, R. Starosta, H. Akbari, D. Luckey, Gy L. Bencze, B. P. Roe, G. Rahal-Callot, Reinhard W. Schulte, R.B. Sutton, D.H. Zhang, M. Schneegans, A. Bujak, Oliver Kornadt, M. Pohl, H. Suter, K. Schultze, E. Tarkovsky, J. M. Salicio, Y.F. Wang, D. Lanske, M. Vollmar, U. Micke, D. Linnhofer, R. Mount, S. Lanzano, D. Wright, Valentin V. Khoze, J. Berdugo, L. Antonov, J. Krizmanic, A. Marchionni, V.R. Krastev, E. Gonzalez, Bernardo Adeva, M. Guanziroli, J. P. Martin, E. Shumilov, J. Zoll, M. Schöntag, W. Böhlen, V. Shoutko, M. Tonutti, Mingshui Chen, V. Morgunov, D. Ren, U. Vikas, A. Contin, Alexander Savin, Igor Vorobiev, M. Hebert, Panos A Razis, P. Blömeke, A. Gordeev, M. Micke, Z.Q. Yang, Sebastian Nowak, B. Borgia, A. van Laak, X.R. Shi, I. Clare, J. Busenitz, P. Göttlicher, R. Leiste, D. Kaplan, C. Spartiotis, R. Morand, Z. L. Xue, Howard A. Stone, T.S. Dai, F. Tonisch, Q. Fan, G. Herten, W. Friebel, G. Faber, Corinne Goy, A. Kuhn, J. A. Bakken, V. Plyaskin, Wen-Gan Ma, 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, and IHEF (IoP, FNWI)

Subjects
Nuclear and High Energy Physics, Particle physics, problem formulation, Electron–positron annihilation, Scalar (mathematics), Hadron, problem modeling, 01 natural sciences, problem understanding, Standard Model, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], information retrieval, Nuclear Experiment, 010306 general physics, Physics, Range (particle radiation), maxims of conversation, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, problem expression, High Energy Physics::Experiment, competitive intelligence, Center of mass, Neutrino, pragmatics, Particle Physics - Experiment
Abstract

If simplified, every information retrieval problem can be solved when the information need implied by its expression has been identified. We are interested in the criteria used in realising a good information retrieval problem expression. We have listed these criteria through some principles and maxims which first characterized the communication between two persons are applied. We choose to use the gricean maxims because they are the most favoured for this type of situation. Secondly, we have tried to identify some others principles that can be used to realise a good information retrieval problem expression. The principles by Grice can not resolve all forms of error associated with this particular form of communication. In our work, we defined three other principles namely: adhesion principle, reformulation principle, memorization principle. We give some examples of situations where the principles we have formulated are not applicable and the consequences. We present the possible applications of our new model: MIRABEL, which can help in the description of information retrieval problem from. It also compels its user to use essential good expression principle implicitly.

Published
1990

22. Antiproton-proton elastic scattering at 6.2 GeV/c

Author

C. Baglin, J.M. Thenard, K. E. Johansson, P. Helgaker, O. Sørum, P.J. Carlson, B. Dalmagne, P. Fleury, P. Lehmann, P. Briandet, F. Richard, V. Gracco, Daniel Treille, A. Eide, A. Navarro-Savoy, L. Staurset, T. Buran, A. Lundby, G. De Rosny, Starita, Sabine, Laboratoire de l'Accélérateur Linéaire (LAL), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Scattering cross-section, Elastic scattering, Nuclear and High Energy Physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Backscatter, Proton, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, 01 natural sciences, Angular distribution, Antiproton, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Accelerator Physics, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Astrophysics::Galaxy Astrophysics, Particle Physics - Phenomenology
Abstract

Antiproton-proton elastic scattering data at 6.2 GeV/c in the range 0.3 (GeV/c)/sup 2/

Published
1975

23. Antiproton-proton annihilation into π+π− and K+K− at 6.2 GeV/c

Author

O. Sørum, P.J. Carlson, B. Dalmagne, K. E. Johansson, P. Fleury, P. Lehmann, Daniel Treille, G. De Rosny, C. Baglin, F. Richard, J.M. Thenard, A. Navarro-Savoy, P. Helgaker, L. Staurset, A. Lundby, V. Gracco, A. Eide, and T. Buran

Subjects
Physics, Elastic scattering, Nuclear and High Energy Physics, Antiparticle, Annihilation, Proton, Meson, Hadron, Nuclear physics, Antiproton, Antimatter, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, Particle Physics - Phenomenology
Abstract

The angular distribution for the two annihilation channels pp to pi /sup +/ pi /sup -/ and pp to K/sup +/K/sup -/ have been measured at 6.2 GeV/c. The two-pion channel shows peripheral peaks for pi /sup +/ and pi /sup -/ going forward, and the two-kaon channel shows a peripheral peak for the K/sup -/ going forward. The results have been compared with the line-reversed elastic backward scattering reactions and also with a constituent interchange model. (20 refs).

Published
1976

24. Measurements of the u valence quark distribution function in the proton and u quark fragmentation functions

Author

M. Arneodo, A. Arvidson, J.J. Aubert, B. Badelek, J. Beaufays, C.P. Bee, C. Benchouk, G. Berghoff, I.G. Bird, D. Blum, E. Böhm, X. De Bouard, F.W. Brasse, H. Braun, C. Broll, S.C. Brown, H. Brück, H. Calen, J.S. Chima, J. Ciborowski, R. Clifft, G. Coignet, F. Combley, J. Coughlan, G. D'Agostini, S. Dahlgren, F. Dengler, I. Derado, T. Dreyer, J. Drees, M. Düren, V. Eckardt, A. Edwards, M. Edwards, T. Ernst, G. Eszes, J. Favier, M.I. Ferrero, J. Figiel, W. Flauger, J. Foster, E. Gabathuler, J. Gajewski, R. Gamet, J. Gayler, N. Geddes, P. Grafström, F. Grard, J. Haas, E. Hagberg, F.J. Hasert, P. Hayman, P. Heusse, M. Jaffre, A. Jacholkowska, F. Janata, G. Jancso, A.S. Johnson, E.M. Kabuss, G. Kellner, V. Korbel, A. Krüger, J. Krüger, S. Kullander, U. Landgraf, D. Lanske, J. Loken, K. Long, M. Maire, P. Malecki, A. Manz, S. Maselli, W. Mohr, F. Montanet, H.E. Montgomery, E. Nagy, J. Nassalski, P.R. Norton, F.G. Oakham, A.M. Osborne, C. Pascaud, B. Pawlik, P. Payre, C. Peroni, H. Peschel, H. Pessard, J. Pettingale, B. Pietrzyk, B. Poensgen, M. Pötsch, P. Renton, P. Ribarics, K. Rith, E. Rondio, A. Sandacz, M. Scheer, A. Schlagböhmer, H. Schiemann, N. Schmitz, M. Schneegans, M. Scholz, M. Schouten, T. Schröder, K. Schultze, T. Sloan, H.E. Stier, M. Studt, G.N. Taylor, J.M. Thenard, J.C. Thompson, A. De la Torre, J. Toth, L. Urban, W. Wallucks, M. Whalley, S. Wheeler, W.S.C. Williams, S.J. Wimpenny, R. Windmolders, and G. Wolf

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Proton, High Energy Physics::Phenomenology, Nuclear Theory, Down quark, Parton, Nuclear physics, Pion, Antiproton, Up quark, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract

A new determination of the u valence quark distribution function in the proton is obtained from the analysis of identified charged pions, kaons, protons and antiprotons produced in muon-proton and muon-deuteron scattering. The comparison with results obtained in inclusive deep inelastic lepton-nucleon scattering provides a further test of the quark-parton model. The u quark fragmentation functions into positive and negative pions, kaons, protons and antiprotons are also measured.

Published
1989

25. A determination of the properties of the neutral intermediate vector boson Z0

Author

Tariq Aziz, M. Fabre, Lamberto Luminari, Antonino Zichichi, J. Ossmann, H. Rykaczewski, C.G. Yang, J. Fehlmann, An.A. Vorobyov, T. Matsuda, P. Schmitz, Alexei Klimentov, D. Harting, P. Marchesini, R. A. Khan, P. Lebrun, C. Camps, Ming Zeng, Y. Peng, P. K. Malhotra, A. Kunin, O. Adriani, H. van der Graaf, Crisostomo Sciacca, A. Chen, V. Plyaskin, M. Hebert, T. Driever, J. Fay, R. Wilhelm, G. Fernandez, F. Carbonara, L. Martinez, M. Dhina, F. L. Linde, Marco Pieri, M. Röhner, Pierre Lecomte, F. Crijns, M. G. Alviggi, K. Freudenreich, B.N. Jin, L. Li, H. Jung, J. Onvlee, A. Malinin, R.W. Kraemer, Luciano Romero, Qian Wang, Y.F. Mao, D. Pandoulas, W. J. Metzger, C. F. He, Giorgio Gratta, G. Landi, A. Pevsner, D. Boutigny, J.F. Li, X.G. Li, U. Becker, M. Bourquin, M. Lebeau, A. Arefiev, T. Spickermann, S. Kwan, A. C. König, E. Valenti, F. Cesaroni, E. Thomas, Sandra Consuegra Rodríguez, F. C. Erné, P. Vikas, K. Strauch, R. Leiste, S. Röhner, R. Magahiz, Luciano Barone, H. Suter, Y.F. Wang, J. Y. Liao, Francesco Marzano, T. Riemann, P. Le Coultre, D. Kirkby, Suresh C Tonwar, R. Weill, F. Wittgenstein, L. Ludovici, E. Drago, L. Niessen, C-Q. Li, Q.Y. Yang, A. Gurtu, V. Commichau, H. J. Schreiber, A. Engler, R.B. Sutton, L. Zehnder, S. Banerjee, Z.Y. Lin, Zp Zhang, G. Chiefari, S. Shevchenko, M. Glaubman, D. Güsewell, F. Ferroni, Yu. Kamyshkov, K. Hangarter, X. Leytens, M. Chemarin, M. Koller, R.Y. Zhu, R. Starosta, D. Luckey, Gy L. Bencze, Jianming Qian, G. Hu, M. Kollek, Yu. Galaktionov, J. Alcaraz, S. Beingessner, Y. Zeng, N. Smirnov, W. Krenz, F. J. Eppling, D. S. Yan, M. Bocciolini, S. Rosier-Lees, G. Herten, Gyorgy Bencze, Dimitri Bourilkov, Samuel C.C. Ting, M. Harris, Carlos Willmott, A. Böhm, G. Coignet, R. Mermod, D. Kaplan, A. Heavy, T. Ferguson, M. Gailloud, W. Karpinski, J. Schwenke, X. Y. Cui, Konrad Deiters, Alberto Aloisio, A. Ricker, A. Grimes, W. Friebel, G. Faber, L. Urbàn, P. Schmitt, J.G. Branson, J. Mnich, Z.F. Gong, Steven Goldfarb, Oliver Kornadt, M. Pohl, W. Wallraff, S. Hancke, F. DeNotaristefani, A. Sopczak, J. Schütte, R.J. Wu, R. Morand, Z. L. Xue, M. Guanziroli, Marco Meschini, Th. Meinholz, D. Antreasyan, W. Ruckstuhl, Corinne Goy, R. Schulte, Howard A. Stone, T.S. Dai, J. Berdugo, E. Shumilov, J. Zoll, D. P. Stickland, P. McBride, P. A. Piroué, J. H. Field, V. Souvorov, T. Foreman, D.N. Mao, C. Souyri, M. Schöntag, W. Böhlen, G. Viertel, M. Moeller, F. Bruyant, V. Morgunov, P. J. Li, D. Zhang, X.W. Tang, Zhuoxiang Ren, Y. Karyotakis, R. Bizzarri, V. Shoutko, T. Böhringer, Y. Mir, J.M. Lubbers, B. Stöhr, R. Dolin, C. H. Ye, R. Liu, J. M. You, P. Berges, I.C. Brock, J.M. Thenard, A.M. Cartacci, C. Zabounidis, A. Kuhn, M.L. Chen, H. S. Chen, C. Dionisi, M. Gruenewald, N. Produit, D. Wright, B. Monteleoni, H.R. Dimitrov, A. Schetkovsky, S. X. Wu, Alain Hervé, A. Schultz von Dratzig, G. A. Yang, M. Gettner, M. Maire, Z. W. Yin, K. Lübelsmeyer, J. A. Bakken, P.F. Klok, A.L. Andersson, Piero Spillantini, Lawrence W. Jones, G. Mirabelli, P.V.K.S. Baba, X.R. Shi, S.Y. Zhang, S. N. Ganguli, B. Borgia, F.G. Hartjes, A. A. Syed, K. Lanius, M. Sassowsky, H.F. Chen, J. Bao, G.H. Wang, Y.J. Pei, A. Tavenrath, M. Tonutti, S.C. Yeh, G. Sauvage, P. Prokofiev, M. Fukushima, J. Ulbricht, B. Ille, G. Rahal-Callot, J. J. Blaising, Wolfgang Lohmann, A. Degré, H. Vogt, L. Antonov, C. Maña, Giovanni Paternoster, Marcella Diemoz, B. Bertucci, A. Bay, D. Campana, F. Dittus, U. Uwer, Igor Vorobiev, M. Steuer, C.L.A. Pols, G. Forconi, Y. H. Chang, J.P. Burq, Bz Yang, S. Patricelli, M. Merk, V. Pieri, J. Weber, E. Perrin, Nicanor Colino, C. Rippich, J. Salicio, B. Lindemann, W.-D. Nowak, Q. Ye, D. H. Zhang, K. Schultze, R. T. Van de Walle, H. Haan, E. Tarkovsky, V. Schegelsky, Panos A Razis, Y. Mi, C. Timmermans, Z.Z. Xu, J. M. Le Goff, H.T. Li, K. Hilgers, J. Perrier, D. Lanske, H. Anderhub, Raffaello D'Alessandro, G. Schwering, Qi An, C. Grinnell, B. Spiess, Vineet Kumar, S. Lökös, P. Blömeke, M. Schneegans, L. Montanet, J.C. Sens, X. Lue, U. K. Chaturvedi, K.S. Yang, Y. S. Lu, M. Vivargent, G.B. Mills, M. Sachwitz, J. P. Martin, Carlo Civinini, M. Maolinbay, I. Clare, T.J. Wenaus, Leonardo Merola, A. Gordeev, M. Micke, X. De Bouard, P. Duinker, Simonetta Gentile, U. Micke, Jérôme Rose, U. Herten, I. Vetlitsky, W. Walk, A. Marchionni, P. Göttlicher, D. Linnhofer, L. Baksay, H. Akbari, Kenneth Francis Read, Vincenzo Innocente, G. Gavrilov, Z.Q. Yang, H. Newman, G. Conforto, Kajari Mazumdar, M. Aguilar-Benitez, V.G. Shevchenko, V. Koutsenko, D.J. Schotanus, V.R. Krastev, T. Azemoon, R. Mount, R.C. Ball, Adrian Biland, Boleslaw Wyslouch, X. D. Cai, I. Duran, C.Y. Chien, H. U. Martyn, H. Vogel, Mingshui Chen, K.D. Shmakov, S. J. Fan, E. Gonzalez, E. Jagel, I. Sheer, M. White, S. Morganti, X. L. Wang, J. A. Rubio, L. Leistam, Marcos Cerrada, P.G. Seiler, E. Dénes, D. Ren, D.W. Schmitz, Peter Denes, K. N. Qureshi, S. Lanzano, Bernardo Adeva, J.H. Wang, B. P. Roe, Paolo Bagnaia, M. Capell, G.G.G. Massaro, A. Contin, V. Khoze, R. Siedling, Alexander Savin, D. Perret-Gallix, H. S. Fesefeldt, Robert Clare, W.G. Ma, E. Nagy, Z. M. Wang, Ph. Rosselet, Thomas Hebbeker, Paul Lecoq, M. Napolitano, K. Sudhakar, S. Volkov, J. D. Burger, B. L. Betev, L.S. Hsu, Jozsef Toth, M. Jongmanns, J. Lettry, Claudio Luci, Elisabetta Gallo, S. Reucroft, H. Fenker, G. Morand, R. Raghavan, Y.P. Tong, Laurent Vuilleumier, E. Isiksal, W. Kittel, R. L. Sumner, V.L. Telegdi, J. Wenninger, V. Pojidaev, S. L. Wu, Speranza Falciano, Yanwen Liu, C. Y. Wang, S.S. Gau, J. F. Zhou, Y.G. Wu, M. MacDermott, G.M. Chen, P. Extermann, I. Leedom, H. Hofer, K. L. Tung, Egidio Longo, G. J. Bobbink, M. M. Ilyas, R. Fabbretti, Philip Kaaret, IHEF (IoP, FNWI), B., Adeva, O., Adriani, M., Aguilarbenitez, H., Akbari, J., Alcaraz, Aloisio, Alberto, Alviggi, Mariagrazia, Q., An, H., Anderhub, A. L., Andersson, L., Antonov, D., Antreasyan, A., Arefiev, T., Azemoon, T., Aziz, P. V., K., P., Bagnaia, J. A., Bakken, L., Baksay, R. C., Ball, S., Banerjee, J., Bao, L., Barone, A., Bay, U., Becker, S., Beingessner, G. L., Bencze, G., Bencze, J., Berdugo, P., Berge, B., Bertucci, B. L., Betev, A., Biland, R., Bizzarri, J. J., Blaising, P., Blomeke, G. J., Bobbink, M., Bocciolini, W., Bohlen, A., Bohm, T., Bohringer, B., Borgia, D., Bourilkov, M., Bourquin, D., Boutigny, J. G., Branson, I. C., Brock, F., Bruyant, J. D., Burger, J. P., Burq, X. D., Cai, D., Campana, C., Camp, M., Capell, F., Carbonara, A. M., Cartacci, M., Cerrada, F., Cesaroni, Y. H., Chang, U. K., Chaturvedi, M., Chemarin, A., Chen, C., Chen, G. M., Chen, H. F., Chen, H. S., Chen, M., Chen, M. L., Chen, Chiefari, Giovanni, C. Y., Chien, C., Civinini, I., Clare, R., Clare, G., Coignet, N., Colino, V., Commichau, G., Conforto, A., Contin, F., Crijn, X. Y., Cui, T. S., Dai, R., Dalessandro, X., Debouard, A., Degre, K., Deiter, E., Dene, P., Dene, F., Denotaristefani, M., Dhina, M., Diemoz, H. R., Dimitrov, C., Dionisi, F., Dittu, R., Dolin, E., Drago, T., Driever, P., Duinker, I., Duran, A., Engler, F. J., Eppling, F. C., Erne, P., Extermann, R., Fabbretti, G., Faber, S., Falciano, S. J., Fan, M., Fabre, J., Fay, J., Fehlmann, H., Fenker, T., Ferguson, G., Fernandez, F., Ferroni, H., Fesefeldt, J., Field, G., Forconi, T., Foreman, K., Freudenreich, W., Friebel, M., Fukushima, M., Gailloud, Y., Galaktionov, E., Gallo, S. N., Ganguli, S. S., Gau, G., Gavrilov, S., Gentile, M., Gettner, M., Glaubman, S., Goldfarb, Z. F., Gong, E., Gonzalez, A., Gordeev, P., Gottlicher, C., Goy, G., Gratta, A., Grime, C., Grinnell, M., Gruenewald, M., Guanziroli, A., Gurtu, D., Gusewell, H., Haan, K., Hangarter, S., Hancke, M., Harri, D., Harting, F. G., Hartje, C. F., He, A., Heavey, T., Hebbeker, M., Hebert, G., Herten, U., Herten, A., Herve, K., Hilger, H., Hofer, L. S., Hsu, G., Hu, G. Q., Hu, B., Ille, M. M., Ilya, V., Innocente, E., Isiksal, E., Jagel, B. N., Jin, L. W., Jone, M., Jongmann, H., Jung, P., Kaaret, R. A., Khan, Y., Kamyshkov, D., Kaplan, W., Karpinski, Y., Karyotaki, V., Khoze, D., Kirkby, W., Kittel, A., Klimentov, P. F., Klok, M., Kollek, M., Koller, A. C., Konig, O., Kornadt, V., Koutsenko, R. W., Kraemer, V. R., Krastev, W., Krenz, A., Kuhn, V., Kumar, A., Kunin, S., Kwan, G., Landi, K., Laniu, D., Lanske, S., Lanzano, M., Lebeau, P., Lebrun, P., Lecomte, P., Lecoq, P., Lecoultre, I., Leedom, J. M., Legoff, L., Leistam, R., Leiste, J., Lettry, X., Leyten, C., Li, H. T., Li, J. F., Li, L., Li, P. J., Li, X. G., Li, J. Y., Liao, R., Liu, Y., Liu, Z. Y., Lin, F. L., Linde, B., Lindemann, D., Linnhofer, W., Lohmann, S., Loko, E., Longo, Y. S., Lu, J. M., Lubber, K., Lubelsmeyer, C., Luci, D., Luckey, L., Ludovici, X., Lue, L., Luminari, W. G., Ma, M., Macdermott, R., Magahiz, M., Maire, P. K., Malhotra, A., Malinin, C., Mana, D. N., Mao, Y. F., Mao, M., Maolinbay, P., Marchesini, A., Marchionni, J. P., Martin, L., Martinez, H. U., Martyn, F., Marzano, G. G., G., T., Matsuda, K., Mazumdar, P., Mcbride, T., Meinholz, M., Merk, R., Mermod, Merola, Leonardo, M., Meschini, W. J., Metzger, Y., Mi, M., Micke, U., Micke, G. B., Mill, Y., Mir, G., Mirabelli, J., Mnich, M., Moeller, L., Montanet, B., Monteleoni, G., Morand, R., Morand, S., Morganti, V., Morgunov, R., Mount, E., Nagy, Napolitano, Marco, H., Newman, L., Niessen, W. D., Nowak, J., Onvlee, J., Ossmann, D., Pandoula, Paternoster, Giovanni, Patricelli, Sergio, Y. J., Pei, Y., Peng, D., Perretgallix, J., Perrier, E., Perrin, A., Pevsner, M., Pieri, V., Pieri, P. A., Piroue, V., Plyaskin, M., Pohl, V., Pojidaev, C. L., A., N., Produit, P., Prokofiev, J. M., Qian, K. N., Qureshi, R., Raghavan, G., Rahalcallot, P., Razi, K., Read, D., Ren, Z., Ren, S., Reucroft, A., Ricker, T., Riemann, C., Rippich, S., Rodriguez, B. P., Roe, M., Rohner, S., Rohner, L., Romero, J., Rose, S., Rosierlee, P., Rosselet, J. A., Rubio, W., Ruckstuhl, H., Rykaczewski, M., Sachwitz, J., Salicio, M., Sassowsky, G., Sauvage, A., Savin, V., Schegelsky, A., Schetkovsky, P., Schmitt, D., Schmitz, P., Schmitz, M., Schneegan, M., Schontag, D. J., Schotanu, H. J., Schreiber, R., Schulte, A. S., Vondratzig, K., Schultze, J., Schutte, J., Schwenke, G., Schwering, Sciacca, Crisostomo, P. G., Seiler, J. C., Sen, I., Sheer, V., Shevchenko, S., Shevchenko, X. R., Shi, K., Shmakov, V., Shoutko, E., Shumilov, R., Siedling, N., Smirnov, A., Sopczak, V., Souvorov, C., Souyri, T., Spickermann, B., Spie, P., Spillantini, R., Starosta, M., Steuer, D. P., Stickland, B., Stohr, H., Stone, K., Strauch, K., Sudhakar, R. L., Sumner, H., Suter, R. B., Sutton, A. A., Syed, X. W., Tang, E., Tarkovsky, A., Tavenrath, V. L., Telegdi, J. M., Thenard, E., Thoma, C., Timmerman, S. C., C., S. M., Ting, Y. P., Tong, M., Tonutti, S. C., Tonwar, J., Toth, K. L., Tung, J., Ulbricht, L., Urban, U., Uwer, E., Valente, R. T., Vandewalle, H., Vandergraaf, I., Vetlitsky, G., Viertel, P., Vika, M., Vivargent, H., Vogel, H., Vogt, S., Volkov, I., Vorobiev, A., Vorobyov, L., Vuilleumier, W., Walk, W., Wallraff, C. Y., Wang, G. H., Wang, J. H., Wang, Q. F., Wang, X. L., Wang, Y. F., Wang, Z. M., Wang, J., Weber, R., Weill, T. J., Wenau, J., Wenninger, M., White, R., Wilhelm, C., Willmott, F., Wittgenstein, D., Wright, R. J., Wu, S. L., Wu, S. X., Wu, Y. G., Wu, B., Wyslouch, Z. Z., Xu, Z. L., Xue, D. S., Yan, B. Z., Yang, C. G., Yang, G., Yang, K. S., Yang, Q. Y., Yang, Z. Q., Yang, Q., Ye, C. H., Ye, S. C., Yeh, Z. W., Yin, J. M., You, C., Zabounidi, L., Zehnder, M., Zeng, Y., Zeng, D., Zhang, D. H., Zhang, S. Y., Zhang, Z. P., Zhang, J. F., Zhou, R. Y., Zhu, A., Zichichi, and J., Zoll

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Partial width, Muon, Branching fraction, Electron–positron annihilation, Hadron, Vector boson, Nuclear physics, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, Particle Physics - Experiment
Abstract

We report the results of first physics runs of the L3 detector at LEP. Based on 2538 hadron events, we determined the mass m z 0 and the width Γ z 0 of the intermediate vector boson Z 0 to be m z 0 =91.132±0.057 GeV (not including the 46 MeV LEP machine energy uncertainty) and Γ z 0 =2.588±0.137 GeV. We also determined Γ invisible =0.567±0.080 GeV, corresponding to 3.42±0.48 number of neutrino flavors. We also measured the muon pair cross section and determined the branching ratio Γ μμ = Γ h =0.056±0.006. The partial width of Z 0 →e + e − is Γ ee =88±9±7 MeV.

Published
1989

26. ? 0 and? production in deep inelastic ?-p interactions at 280 GeV/c

Author

J. Favier, Uwe Pietrzyk, Michele Arneodo, M. Whalley, A. W. Edwards, J.M. Thenard, J. Figiel, H. Pessard, G. Berghoff, M. Pötsch, P. R. Norton, Geoffrey Taylor, P. Grafström, F. Combley, M. Maire, C. P. Bee, F. G. Oakham, P. Malecki, J. G. Loken, T. Dreyer, J. Gajewski, Hans Calén, G. Eszes, Jozsef Toth, W.S.C. Williams, Stephen Wimpenny, F. Janata, P. Payre, I. Derado, W. Mohr, G. Kellner, P. B. Renton, A. S. Johnson, E. M. Kabuss, H. E. Stier, M. Scheer, J. Haas, A. Schlagböhmer, T. Schröder, A. Sandacz, E. Nagy, H. Peschel, H. Brück, C. Broll, H.E. Montgomery, S. Dahlgren, Kr Long, B. Pietrzyk, M. Schouten, I. G. Bird, N. Schmitz, J. Gayler, G. Coignet, J. Drees, J. Ciborowski, G. Jancso, A. de la Torre, M. Studt, C. Benchouk, F. Dengler, M. Jaffre, L. Urban, D. Blum, J. S. Chima, J. Krüger, Joshua Thompson, Ulrich Landgraf, M. Schneegans, P. Ribarics, E. Rondio, A.M. Osborne, S. Kullander, G. D'Agostini, E. Böhm, W. Flauger, S. Wheeler, H. Schiemann, Gy. Wolf, J. Nassalski, M.I. Ferrero, R. W. Clifft, T. J. Sloan, B. Pönsgen, A. Manz, Silvia Maselli, R. Gamet, F. Grard, P.J. Hayman, K. Schultze, Cristiana Peroni, Roland Windmolders, J. J. Aubert, D. Lanske, C. Pascaud, A. Arvidson, Michael Düren, M. C. Edwards, F.W. Brasse, B. Pawlik, X. De Bouard, M. Scholz, J. Beaufays, Ph. Heusse, Jane Coughlan, V. Eckardt, W. Wallucks, J. Foster, E. Gabathuler, E. Hagberg, N. Geddes, T. Ernst, K. Rith, B. Badelek, F. Montanet, S.C. Brown, A. Jacholkowska, J. Pettingale, V. Korbel, F. J. Hasert, and H. M. Braun

Subjects
Nuclear physics, Physics, High energy, Physics and Astronomy (miscellaneous), Spin states, Meson, Isospin, Nuclear Theory, Density of states, Production (computer science), Space (mathematics), Engineering (miscellaneous), Pseudoscalar meson
Abstract

Inclusive distributions of ρ0 and ω mesons have been measured in deep inelastic μ-p interactions at 280 GeV/c. A comparison of the ρ0 cross sections with other leptoproduction experiments is presented. The ω results represent the first observation of this inclusive channel in high energy leptoproduction. The ρ0 and ω yields are found to be equal as may be expected from the available density of states in isospin space. This contrasts with spin angular momentum where the vector to pseudoscalar meson ratio is suppressed relative to the available number of spin states.

Published
1986

28. Jet production and fragmentation properties in deep inelastic muon scattering

Author

P. Payre, M. Pötsch, M. I. Ferrero, F. Janata, G. Jancso, B. Pietrzyk, E. Gabathuler, A. Sandacz, M. Scheer, T. Ernst, B. Badelek, J. Drees, Stephen Wimpenny, K. Rith, P. B. Renton, M. Whalley, C. P. Bee, A. Schlabböhmer, P. Malecki, A. de la Torre, H. Brück, V. Korbel, J. Gajewski, C. Benchouk, M. Studt, K. Long, E. Böhm, T. Schröder, F. G. Oakham, H. E. Stier, F. Montanet, C. Broll, Jc Thompson, H. Peschel, A. Jacholkowska, J. Favier, L. Urban, Ulrich Landgraf, F. W. Brasse, G. Berghoff, J. Krüger, R. Gamet, A. S. Johnson, A.M. Osborne, W.S.C. Williams, J. Pettingale, F. Combley, G. Kellner, Sven Kullander, M. Maire, J. Ftáčnik, H. Schiemann, K. Schultze, D. Lanske, H.E. Montgomery, J. Gayler, Jozsef Toth, H. Pessard, G. D'Agostini, D. Blum, M. Drobnitzki, Karl Ziemons, J. S. Chima, Uwe Pietrzyk, J. Foster, A. Edwards, S.C. Brown, M. Edwards, Michele Arneodo, S. Wheeler, P.J. Hayman, J. Nassalski, J.M. Thenard, E. Rondio, H. M. Braun, B. Pönsgen, E. M. Kabuss, T. J. Sloan, P. R. Norton, M. Jaffré, W. Flauger, F.J. Hasert, J. G. Loken, A. Krüger, Roland Windmolders, N. Geddes, Norbert Schmitz, A. Arvidson, Michael Düren, C. Peroni, J. Figiel, P. Ribarics, E. Hagberg, M. Scholz, E. Nagy, M. Schneegans, G. Eszes, J. J. Aubert, W. Wallucks, S. Dahlgren, R. W. Clifft, A. Manz, Janet Conrad, Jane Coughlan, V. Eckardt, F. Dengler, B. Pawlik, Silvia Maselli, C. Pascaud, Hans Calén, I. G. Bird, G. Coignet, J. Beaufays, Ph. Heusse, I. Derado, W. Mohr, F. Grard, Gy. Wolf, P. Grafström, X. De Bouard, Jacek Ciborowski, Geoffrey Taylor, T. Dreyer, and J. Haas

Subjects
Physics, Quantum chromodynamics, Particle physics, Physics and Astronomy (miscellaneous), Lund string model, Elementary particle, Parton, Inelastic scattering, Deep inelastic scattering, Gluon, Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment, Parton shower, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

Results are presented from a study of deep inelastic 280 GeV muon-nucleon interactions on the transverse momenta and jet properties of the final state hadrons. The results are analysed in a way which attempts to separate the contributions of hard and soft QCD effects from those that arise from the fragmentation process. The fragmentation models with which the data are compared are the Lund string model, the independent jet model, the QCD parton shower model including soft gluon interference effects, and the firestring model. The discrimination between these models is discussed. Various methods of analysis of the data in terms of hard QCD processes are presented. From a study of the properties of the jet profiles a value of αs, to leading order, is determined using the Lund string model, namely αs=0.29±0.01 (stat.) ±0.02 (syst.), forQ2∼20 GeV2.

Published
1987

29. Measurement of the nucleon structure function F2 in muon-iron interactions at 120,250 and 280 GeV

Author

J. M. Crespo, E. Schlösser, M. Villers, P.F. Dalpiaz, R.W. Dobinson, L. Massonnet, M. Leenen, G. Gössling, S.C. Brown, V. Korbel, Joshua Thompson, D. Williams, J. Drees, H. Pessard, J.H. Cobb, Richard Mount, J. McNicholas, F.W. Brasse, M. Schneegans, J. Favier, R. W. Clifft, Klaus Hamacher, E. Böhm, J. J. Aubert, J. Carr, U. Dosselli, Y. Declais, C. Broll, H.E. Montgomery, G. D'Agostini, H. E. Stier, Stephen Wimpenny, X. De Bouard, F. Combley, M. Maire, R. Gamet, J. Gayler, E. Gabathuler, H. Wahlen, W. Mohr, W.D. Dau, P. Gregory, J.K. Davies, K.H. Becks, G. Coignet, M.I. Ferrero, Ulrich Landgraf, M. Henckes, P. Payre, K. Rith, K. Moser, Uwe Pietrzyk, P.J. Hayman, V. Gerhardt, A. W. Edwards, C. Best, J.M. Thenard, P. R. Norton, M. C. Edwards, W. Stockhausen, Jennifer S. Haas, P. Dalpiaz, Cristiana Peroni, H. Minssieux, U. Hahn, W. Flauger, A.M. Osborne, T. J. Sloan, P. Ghez, J.G. Williamson, W.S.C. Williams, G. Bassompierre, M. Whalley, J.R. Holt, L. Urban, G.R. Court, and H. Jokisch

Subjects
Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Hadron, Elementary particle, Deep inelastic scattering, Nuclear physics, Baryon, High Energy Physics::Experiment, Symmetry breaking, Nucleon, Particle Physics - Experiment
Abstract

A measurement of the nucleon structure function F2 on iron is presented. The data cover a kinematic range of 3.25 {slanted equal to or less-than} Q2 {slanted equal to or less-than} 200 GeV2and 0.05 {slanted equal to or less-than} x {slanted equal to or less-than} 0.65. The data clearly show scaling violation. Fits in leading-order QCD have been made and values for the scale breaking parameter λ are given. © 1981.

Published
1981

30. Measurement of in deep inelastic muon-proton scattering

Author

F. Combley, M. Maire, W.S.C. Williams, P. Payre, V. Korbel, M. Leenen, Joshua Thompson, M. Schneegans, G. D'Agostini, J. Favier, C. Best, D. Williams, Uwe Pietrzyk, P.F. Dalpiaz, M. C. Edwards, Klaus Hamacher, J.H. Cobb, J. Carr, A.M. Osborne, J.K. Davies, A. W. Edwards, T. J. Sloan, J.M. Thenard, M.I. Ferrero, Claus Goessling, H. Pessard, K. Moser, P. R. Norton, M. Whalley, V. Gerhardt, J. J. Aubert, H. E. Stier, P.J. Hayman, C. Broll, H.E. Montgomery, K. Rith, H. Wahlen, H. Jokisch, X. De Bouard, U. Dosselli, M. Henckes, Cristiana Peroni, E. Gabathuler, J.G. Williamson, J. McNicholas, J. Drees, J. Gayler, F.W. Brasse, G.R. Court, P. Gregory, Stephen Wimpenny, G. Bassompierre, P. Dalpiaz, G. Coignet, E. Boehm, L. Urban, S.C. Brown, J. M. Crespo, R. Gamet, L. Massonnet, H. Minssieux, R.W. Dobinson, W. Mohr, W. Flauger, K.H. Becks, Richard Mount, Y. Declais, W. Stockhausen, Jennifer S. Haas, W.D. Dau, R. W. Clifft, Ulrich Landgraf, and M. Villiers

Subjects
Nuclear physics, Quantum chromodynamics, Physics, Nuclear and High Energy Physics, X-ray Raman scattering, Muon, Scattering, Absorption cross section, High Energy Physics::Experiment, Scattering length, Inelastic scattering, Nuclear Experiment, Deep inelastic scattering
Abstract

The ratio R = σ L σ T of the longitudinal to the tranverse photon absorption cross section has been determined from deep inelastic muon-proton scattering at incident energies of 120, 200 and 280 GeV. The results are given as a function of the variables x , Q 2 and ν of the interaction. In the kinematic range 60 ⩽ ν ⩽ 160 GeV at 〈 Q 2 〉 = 22.5 GeV 2 an average value of R = 0.00 ± 0.10 has been obtained.

Published
1983

31. Measurement of hadron azimuthal distributions in deep inelastic muon proton scattering

Author

A. S. Johnson, Stephen Wimpenny, T. Schröder, J. Gajewski, J. Foster, S. Wheeler, B. Pietrzyk, S.C. Brown, Kr Long, F. Combley, M. Whalley, M. Scheer, C. Broll, H.E. Montgomery, Joshua Thompson, A. Sandacz, J. Nassalski, B. Pönsgen, M. Maire, N. Geddes, D. Blum, M. Schneegans, M. Pötsch, W. Flauger, J. Gayler, E. Nagy, G. D'Agostini, G. Jancso, H. Pessard, V. Korbel, S. Dahlgren, J. Drees, G. Eszes, Ulrich Landgraf, V. Eckardt, J. G. Loken, F.J. Hasert, P. B. Renton, J. Beaufays, Gy. Wolf, R. W. Clifft, Janet Conrad, J. Favier, C. P. Bee, N. Pavel, Jozsef Toth, F. Grard, H. M. Braun, Ph. Heusse, J. J. Aubert, A. de la Torre, M. Studt, F.W. Brasse, P. Malecki, E. M. Kabuss, B. Pawlik, R. Gamet, X. De Bouard, Silvia Maselli, Geoffrey Taylor, E. Rondio, H. Schiemann, P. Ribarics, C. Pascaud, T. Dreyer, J. Figiel, N. Schmitz, C. Benchouk, A. Schlagböhmer, J. Krüger, Jane Coughlan, G. Kellner, K. Schultze, M.I. Ferrero, M. Jaffre, F. G. Oakham, E. Hagberg, H. E. Stier, W. Wallucks, P. Grafström, W.S.C. Williams, Michele Arneodo, D. Lanske, G. Berghoff, H. Peschel, A. W. Edwards, A.M. Osborne, S. Kullander, J. Haas, E. Böhm, J.M. Thenard, A. Manz, T. J. Sloan, I. Derado, P. R. Norton, W. Mohr, M. C. Edwards, Hans Calén, A. Jacholkowska, F. Montanet, I. G. Bird, Cristiana Peroni, G. Coignet, Roland Windmolders, J. Pettingale, A. Arvidson, Michael Düren, P.J. Hayman, M. Scholz, K. Rith, H. Brück, F. Dengler, J. S. Chima, F. Janata, P. Payre, E. Gabathuler, T. Ernst, B. Badelek, J. Ciborowski, and L. Urban

Subjects
Quark, Quantum chromodynamics, Physics, Particle physics, Muon, Physics and Astronomy (miscellaneous), Scattering, Hadron, Virtual particle, Momentum, Nuclear physics, Transverse plane, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

A study of the distribution of the azimuthal angle ϕ of charged hadrons in deep inelastic μ−p scattering is presented. The dependence of the moments of this distribution on the Feynmanx variable and the momentum transverse to the virtual photon indicates that non-zero moments arise mainly from the effects of the intrinsicK T of the struck quark with >≳(0.44 GeV)2, and to a lesser extent from QCD processes. No significant variation withQ 2 orW 2 is observed.

Published
1987

32. The Bose-Einstein correlations in deep inelastic ?p interactions at 280 GeV

Author

G. Eszes, F. Combley, M. Maire, E. Böhm, G. Kellner, H. M. Braun, B. Pietrzyk, S. Wheeler, Gy. Wolf, J. Nassalski, B. Pönsgen, J. Favier, Joshua Thompson, J. Figiel, F. G. Oakham, F.W. Brasse, V. Eckardt, M. Schneegans, F. Montanet, H. E. Stier, G. Berghoff, C. Benchouk, H. Peschel, J. G. Loken, G. D'Agostini, Stephen Wimpenny, J. Beaufays, F. J. Hasert, Ph. Heusse, F. Janata, P. Payre, J. J. Aubert, I. Derado, J. Ciborowski, L. Urban, P. Grafström, M.I. Ferrero, P.J. Hayman, X. De Bouard, Hans Calén, K. Rith, A. Manz, Silvia Maselli, T. Schröder, W. Mohi, A. S. Johnson, J. Gajewski, A. Sandacz, C. Pascaud, Geoffrey Taylor, R. Cliftt, J. Drees, F. Grard, M. Pötsch, Kr Long, D. Blum, I. G. Bird, M. Scheer, F. Dengler, Jozsef Toth, E. Rondio, J. S. Chima, G. Coignet, M. Jaffre, R. Gamet, S.C. Brown, Jane Coughlan, M. Schouten, J. Haas, C. P. Bee, Ulrich Landgraf, L. S. Osborne, E. Hagberg, G. Jancso, P. Malecki, B. Pawlik, P. B. Renton, W. Flauger, A. de la Torre, M. Studt, H. Pessard, M. C. Edwards, A. Jacholkowska, H. Schiemann, E. M. Kabuss, K. Schultze, J. Pettingale, D. Lanske, H. Brück, J. Krüger, E. Nagy, S. Dahlgren, A.M. Osborne, S. Kullander, N. Schmitz, T. J. Sloan, W. Wallucks, E. Gabathuler, J. Foster, V. Korbel, Cristiana Peroni, T. Ernst, B. Badelek, Roland Windmolders, A. Arvidson, Michael Düren, T. Dreyer, M. Sholz, A. Schlagböhmer, P. Ribarics, W.S.C. Williams, Michele Arneodo, A. W. Edwards, J.M. Thenard, M. Whalley, P. R. Norton, C. Broll, H.E. Montgomery, J. Gayler, and N. Geddes

Subjects
Physics, Particle physics, Physics and Astronomy (miscellaneous), Nuclear Theory, Charge (physics), Astrophysics::Cosmology and Extragalactic Astrophysics, Bose–Einstein correlations, Radius, Rest frame, Nuclear physics, Pion, Mass spectrum, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, Engineering (miscellaneous), Parametrization, Particle Physics - Experiment
Abstract

The Bose-Einstein correlation has been observed for pions in deep inelastic μp interactions at 280 GeV. The importance of non-interference correlations in the sample of like charge pion pairs and in the sample used for reference is discussed. The pion emission region is found to be roughly spherical in the pair rest frame with a radius of 0.46–0.84 fm and the chaos factor λ is 0.60–1.08.

Published
1986

33. Proton and antiproton production in deep inelastic muon-nucleon scattering at 280 GeV

Author

A. Manz, Jane Coughlan, M. Jaffre, V. Eckardt, E. Böhm, G. Kellner, P. B. Renton, J. Ciborowski, L. Urban, Michele Arneodo, J. Krüger, F. Janata, P. Payre, A. W. Edwards, F. Combley, M. Maire, A.M. Osborne, S. Kullander, B. Poensgen, J.M. Thenard, J. G. Loken, T. J. Sloan, J. Favier, P. R. Norton, W. Flauger, H. Pessard, F.J. Hasert, A. Jacholkowska, M. C. Edwards, J. Pettingale, S. Wheeler, P. Ribarics, J. Drees, M.I. Ferrero, J. Nassalski, C. Pascaud, G. Jansco, J. Beaufays, E. Gabathuler, C. Benchouk, E. M. Kabuss, W. Wallucks, T. Ernst, H. E. Stier, B. Badelek, A. S. Johnson, Ph. Heusse, G. Eszes, E. Rondio, Cristiana Peroni, Roland Windmolders, B. Pawlik, H. Peschel, R. Gamet, I. Derado, M. Scheer, W. Mohr, J. J. Aubert, A. Arvidson, F. Dengler, S. Maselli, Michael Düren, T. Schröder, M. Whalley, A. Schlagböhmer, J. S. Chima, H. Schiemann, S.C. Brown, M. Schouten, K. Schultze, C. Broll, D. Lanske, E. Hagberg, H.E. Montgomery, Ulrich Landgraf, Kr Long, Stephen Wimpenny, X. De Bouard, F. Grard, G. Berghoff, J. Foster, J. Gayler, A. de la Torre, D. Blum, M. Scholz, M. Studt, P.J. Hayman, K. Rith, A. Sandacz, A. Krüger, N. Geddes, V. Korbel, W.S.C. Williams, J. Figiel, F.W. Brasse, Gy. Wolf, N. Schmitz, Geoffrey Taylor, F. G. Oakham, T. Dreyer, E. Nagy, F. Montanet, J. Haas, S. Dahlgren, H. M. Braun, R. W. Clifft, J. Gajewski, B. Pietrzyk, Joshua Thompson, M. Schneegans, G. D'Agostini, Jozsef Toth, H. Brück, P. Grafström, M. Pötsch, C. P. Bee, P. Malecki, Hans Calén, I. G. Bird, and G. Coignet

Subjects
Physics, Particle physics, Muon, Physics and Astronomy (miscellaneous), Proton, Nuclear Theory, Inelastic scattering, Deep inelastic scattering, Nuclear physics, Pair production, Antiproton, Antimatter, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment, Nucleon, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

New results on proton and antiproton production in the target and current fragmentation regions of high energy muon-nucleon scattering are presented. Proton and antiproton production is investigated as a function of Feynmanx and rapidity. No significant difference is observed between production on hydrogen and deuterium targets. Correlations betweenpp,\(p\bar p\) and\(\bar p\bar p\) pairs are analysed and the results are compared with the predictions of the Lund fragmentation model.

Published
1987

34. Measurement of hadronic azimuthal distributions in deep inelastic muon proton scattering

Author

A. S. Johnson, F.J. Hasert, G. Berghoff, S.C. Brown, B. Pietrzyk, F. Dengler, Joshua Thompson, E. Böhm, J. S. Chima, J. Favier, M. Scheer, M.I. Ferrero, M. Pötsch, E. Nagy, P. B. Renton, S. Dahlgren, J. Gajewski, J. G. Loken, Gy. Wolf, G. Kellner, M. Schneegans, G. D'Agostini, Ulrich Landgraf, C. P. Bee, Geoffrey Taylor, H. Brück, P. Malecki, Silvia Maselli, F. Janata, P. Payre, T. Dreyer, C. Pascaud, H. M. Braun, M. Jaffre, Jozsef Toth, T. Schröder, R. W. Clifft, F.W. Brasse, Janet Conrad, R. Gamet, J. Haas, M. C. Edwards, H. Pessard, Kr Long, J. Beaufays, P. Grafström, J. Foster, F. Montanet, Ph. Heusse, D. Blum, W.S.C. Williams, P.J. Hayman, Hans Calén, J. J. Aubert, Stephen Wimpenny, H. Schiemann, E. M. Kabuss, N. Geddes, I. G. Bird, Cristiana Peroni, Roland Windmolders, J. Drees, G. Coignet, H. E. Stier, A. Arvidson, K. Schultze, Michael Düren, H. Peschel, C. Benchouk, X. De Bouard, D. Lanske, V. Eckardt, E. Gabathuler, A. Sandacz, B. Pawlik, M. Scholz, W. Wallucks, E. Rondio, T. Ernst, B. Badelek, A. de la Torre, M. Studt, F. Combley, M. Maire, N. Schmitz, G. Jancso, J. Krüger, A.M. Osborne, S. Kullander, T. J. Sloan, P. Ribarics, E. Hagberg, J. Ciborowski, L. Urban, K. Rith, Jane Coughlan, M. Whalley, A. Jacholkowska, J. Pettingale, V. Korbel, A. Manz, N. Pavel, G. Eszes, S. Wheeler, J. Nassalski, B. Pönsgen, J. Figiel, F. G. Oakham, C. Broll, H.E. Montgomery, J. Gayler, Michele Arneodo, A. W. Edwards, J.M. Thenard, P. R. Norton, A. Schlagböhmer, F. Grard, I. Derado, W. Mohr, W. Flauger, 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), 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), EMC, and BOMBAR, Claudine

Subjects
Quark, Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Muon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, Virtual particle, Elementary particle, Inelastic scattering, Deep inelastic scattering, 01 natural sciences, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Particle Physics - Experiment
Abstract

A study of the distribution of the azimuthal angle ϕ of charged hadrons in deep inelastic μ−p scattering is presented. The dependence of the moments of this distribution on the Feynmanx variable and the momentum transverse to the virtual photon indicates that non-zero moments arise mainly from the effects of the intrinsicKT of the struck quark with >≳(0.44 GeV)2, and to a lesser extent from QCD processes. No significant variation withQ2 orW2 is observed.

Published
1983

35. A Determination of the Fragmentation Functions of U-quarks Into Charged Pions

Author

M. Schneegans, J. Williamson, C. Best, H. E. Stier, D. Williams, M. I. Ferrero, P. Payre, H. Pessard, M. Whalley, J. Favier, E. Gabathuler, R. W. Clifft, F. Combley, M. Maire, H. Wahlen, H. Peschel, G.R. Court, J. Drees, J.H. Cobb, M. Villers, W. Mohr, A. W. Edwards, C. Goessling, G. Bassompierre, J.M. Thenard, W.D. Dau, B. Korzen, W. Stockhausen, P. R. Norton, M. Henckes, Adam C. Schneider, Y. Declais, R. Gamet, W.S.C. Williams, Stephen Wimpenny, K. Ham Acher, M. Edwards, E. Nagy, U. Dosselli, T. J. Sloan, K.H. Becks, J. Nassalski, L. Urban, H. Forsbach, S.C. Brown, W. Flauger, C. Benchouk, G. D'Agostini, G. Coignet, K. Moser, A.M. Osborne, J. J. Aubert, U. Pietrzyk, C. Broll, C. Peroni, H.E. Montgomery, X. De Bouard, K. Rith, J. Gayler, V. Korbel, J. Haas, J. Carr, J.K. Davies, J. McNicholas, V. Gerhardt, Ulrich Landgraf, E. Boehm, F.W. Brasse, J. C. Thompson, R.P. Mount, P.J. Hayman, M. Leenen, BOMBAR, Claudine, 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), and EMC

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, High Energy Physics::Lattice, High Energy Physics::Phenomenology, Nuclear Theory, Parton, 01 natural sciences, Nuclear physics, Pion, Distribution function, Fragmentation (mass spectrometry), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, Particle Physics - Experiment
Abstract

The fragmentation functions of u-quarks into positive and negative pions are determined from an analysis of identified pions produced in deep inelastic muon-deuterium scattering. The method adopted is not sensitive to the knowledge of the primary quark distribution functions. The fragmentation of u quarks to positive pions is found to fall less steeply in z than that to negative pions as expected in the quark parton model. © 1985.

Published
1985

36. $\pi^{-}p$ and $K^{-}p$ elastic scattering at 6.2 GeV/c

Author

V. Gracco, G. De Rosny, P.J. Carlson, K. E. Johansson, T. Buran, O. Sørum, A. Lundby, L. Staurset, P. Briandet, P. Fleury, F. Richard, Daniel Treille, A. Eide, A. Navarro-Savoy, J.M. Thenard, P. Lehmann, B. Dalmagne, P. Helgaker, C. Baglin, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Starita, Sabine

Subjects
Elastic scattering, Physics, Nuclear and High Energy Physics, Antiparticle, Meson, 010308 nuclear & particles physics, Scattering, [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th], Astrophysics::High Energy Astrophysical Phenomena, Hadron, Elementary particle, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Nuclear physics, Antimatter, 0103 physical sciences, High Energy Physics::Experiment, [PHYS.HTHE] Physics [physics]/High Energy Physics - Theory [hep-th], Atomic physics, Nuclear Experiment, 010306 general physics, Boson, Particle Physics - Phenomenology
Abstract

Data on 6.2 GeV/c pi /sup -/p and K/sup -/p elastic scattering cross sections are presented in the range 0.3

Published
1976

37. $\rho^{0}$ production in deep inelastic $\mu$ -p interactions

Author

H. Wahlen, Claus Goessling, M. Leenen, Joshua Thompson, M. Schneegans, G. D'Agostini, C. Broll, H.E. Montgomery, F. Combley, M. Maire, V. Korbel, C. Best, J. Gayler, J.G. Williamson, M. C. Edwards, J. Favier, J. Carr, E. Nagy, D. Williams, M. Villers, W. Mohr, G. Bassompierre, J.H. Cobb, Klaus Hamacher, C. Benchouk, L. Urban, J. Mcnicolas, F.W. Brasse, U. Dosselli, P. Payre, Richard Mount, K. Moser, J. Nassalski, E. Boehm, Y. Declais, W. Flauger, A.M. Osborne, T. J. Sloan, G. Coignet, Ulrich Landgraf, M. Henckes, H. Minssieux, W.D. Dau, H. Pessard, H. E. Stier, R. Gamet, J.K. Davies, M.I. Ferrero, W. Stockhausen, J. J. Aubert, P.J. Hayman, X. De Bouard, E. Gabathuler, H. Forsbach, S.C. Brown, V. Gerhardt, J. Drees, Jennifer S. Haas, Uwe Pietrzyk, K.H. Becks, R. W. Clifft, Adam C. Schneider, Cristiana Peroni, A. W. Edwards, J.M. Thenard, P. R. Norton, K. Rith, Stephen Wimpenny, W.S.C. Williams, M. Whalley, G.R. Court, BOMBAR, Claudine, 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), 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), and EMC

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Branching fraction, Hadron, Inelastic scattering, Deep inelastic scattering, 01 natural sciences, Nuclear physics, Pion, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Particle Physics - Experiment, Lepton
Abstract

Inclusive ϱ 0 meson production has been measured in 120 GeV and 280 GeV muon-proton interactions. Distributions of z and p T 2 are presented. Primary ϱ 0 production is found to be equal to that of π 0 production within errors.

Published
1983

38. The measurement of bethe-heitler bremsstrahlung in muon-hydrogen interactions at 200 gev

Author

D. Williams, Uwe Pietrzyk, Joshua Thompson, U. Dosselli, A. W. Edwards, J.M. Thenard, K. Moser, M. Schneegans, M. Whalley, P. R. Norton, F. Combley, M. Maire, H. Wahlen, G. D'Agostini, J. McNicholas, J.K. Davies, G.R. Court, M. Villers, A.M. Osborne, J. Favier, M.I. Ferrero, T. J. Sloan, Claus Goessling, H. Pessard, G. Coignet, J. J. Aubert, C. Broll, H.E. Montgomery, P.J. Hayman, Klaus Hamacher, X. De Bouard, H. Forsbach, V. Gerhardt, J. Gayler, H. E. Stier, S.C. Brown, V. Korbel, E. Gabathuler, F.W. Brasse, W.D. Dau, W. Flauger, W.S.C. Williams, Cristiana Peroni, C. Benchouk, J. Carr, S. J. Wimpenny, E. Nagy, J. Williamson, R. Gamet, M. C. Edwards, K.H. Becks, L. Urban, H. Minssieux, Ulrich Landgraf, R. W. Clifft, C. Best, J.H. Cobb, J. Nassalski, P. Payre, W. Stockhausen, M. Henckes, E. Boehm, Richard Mount, Jennifer S. Haas, K. Rith, Y. Declais, W. Mohr, G. Bassompierre, J. Dress, P. Gregory, M. Leenen, 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), 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), EMC, and BOMBAR, Claudine

Subjects
Physics, Particle physics, Muon, Photon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics and Astronomy (miscellaneous), Spectrometer, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, Bremsstrahlung, Emission theory, 01 natural sciences, Nuclear physics, Lead glass, visual_art, 0103 physical sciences, visual_art.visual_art_medium, Radiative transfer, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

Using a lead glass detector installed in the EMC forward spectrometer radiative photons have been measured in 200 GeV muon-hydrogen collisions. The results are compared with the standard QED one photon emission theory of Mo and Tsai and also with the more recent predictions of a multiphoton emission theory of Chahine. We conclude that there is no evidence for any deviation from the standard theory, in terms of the yield and angular distribution of photons with fractional energy,z>0.7.

Published
1984

39. A LARGE MAGNETIC SPECTROMETER SYSTEM FOR HIGH-ENERGY MUON PHYSICS

Author

Richard Mount, J. Favier, D. R. Botterill, Klaus Hamacher, Y. Declais, A.M. Osborne, T. J. Sloan, J. J. Aubert, C. Broll, H.E. Montgomery, W.S.C. Williams, Joshua Thompson, P. Payre, M. Henckes, J. Drees, Y. Bertsch, H. Pessard, J. Gayler, U. Hahn, E. Gabathuler, M. Schneegans, G. Bassompierre, R.W. Dobinson, P. Dalpiaz, R. Gamet, G. Gössling, E. J. Watson, E. Schlösser, K.H. Becks, P.F. Dalpiaz, O. C. Allkofer, P.J. Hayman, B. Charles, M. Moynot, H. E. Stier, J. M. Crespo, K. Rith, Stephen Wimpenny, C. Best, Cristiana Peroni, M. D. Rousseau, A. Melissinos, L. Massonnet, F.W. Brasse, G. Coignet, W.D. Dau, L. Urban, W. Mohr, P. Ghez, Uwe Pietrzyk, F. Combley, M. Maire, C. Besson, M. Sproston, E. Böhm, A. W. Edwards, V. Korbel, J. Kadyk, J.M. Thenard, V.A. White, W. Stockhausen, P. R. Norton, W. Flauger, J. Carr, G. von Holtey, M. Vivargent, Jennifer S. Haas, H. Jokisch, J.K. Davies, R. W. Clifft, M. C. Edwards, M.I. Ferrero, K. Moser, H. Wahlen, J. H. Field, D. Williams, and J.H. Cobb

Subjects
Physics, Particle physics, Muon, Large Hadron Collider, Spectrometer, Physics::Instrumentation and Detectors, General Medicine, Inelastic scattering, Deep inelastic scattering, European Muon Collaboration, Nuclear physics, Muon collider, Physics::Accelerator Physics, High Energy Physics::Experiment, Detectors and Experimental Techniques, Nuclear Experiment, Lepton
Abstract

The European Muon Collaboration has built a large magnetic spectrometer system for deep inelastic muon scattering experiments at the CERN SPS muon beam. The general characteristics of the apparatus — composed of a target of either liquid hydrogen or deuterium, or iron plus scintillator, followed by a large magnet with wire chambers before and after it for precise angle and momentum measurement, a muon identifier, large trigger hodoscopes, and hadron identifiers — are explained and each part is described in some detail. The main features of the data-acquisition and apparatus-monitoring systems and of the off-line event reconstruction are given.

Published
1981

40. Recent results from the Bugey neutrino oscillation experiment

Author

Y. Declais, D.H. Koang, H. de Kerret, B. Vignon, H. Pessard, J.M. Thenard, A. Hoummada, and J.F. Cavaignac

Subjects
Massless particle, Physics, Nuclear physics, Particle physics, Oscillation, Antimatter, Neutron, Neutrino, Nucleon, Neutrino oscillation, Lepton
Abstract

The energy spectrum of electron antineutrinos has been measured at two distances, 13.6 and 18.3 meters, from the core of a PWR power reactor at Bugey (FRANCE). About 63000 antineutrinos events have been recorded using the inverse β‐decay reaction νe+p→n+e+. A significant difference in the counting rate between the two positions has been observed. The compatibility of the results with solutions in a two‐neutrino oscillation analysis is discussed.

Published
1984

41. A Detailed Study of the Proton Structure Functions In Deep Inelastic Muon-proton Scattering

Author

F. Combley, M. Maire, M. Leenen, U. Pietrzyk, M. Schneegans, P.J. Hayman, J. J. Aubert, W. Stockhausen, P. Payre, C. Broll, H.E. Montgomery, X. De Bouard, Jennifer S. Haas, J. Nassalski, R.W. Dobinson, J.H. Cobb, J. Gayler, E. Böhm, Ulrich Landgraf, Claus Gössling, V. Korbel, L. Urban, F.W. Brasse, J. Favier, W.D. Dau, J. Carr, K.H. Becks, C. Best, K. Moser, R. Gamet, J. C. Thompson, Richard Mount, K. Rith, W. Mohr, H. E. Stier, Stephen Wimpenny, Y. Declais, J.G. Williamson, E. Gabathuler, S.C. Brown, J. Drees, W. Flauger, G. Bassompierre, H. Wahlen, M. Henckes, A. W. Edwards, J.M. Thenard, J. McNicholas, P. R. Norton, R. W. Clifft, H. Pessard, J.K. Davies, Klaus Hamacher, M.I. Ferrero, V. Gerhardt, Cristiana Peroni, W.S.C. Williams, M. Edwards, M. Whalley, A.M. Osborne, T. J. Sloan, U. Dosselli, G. D'Agostini, G. Coignet, 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
Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Muon, Photon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Proton, 010308 nuclear & particles physics, Scattering, 01 natural sciences, Gluon, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Twist, Nuclear Experiment, 010306 general physics, Nucleon, Particle Physics - Experiment
Abstract

The x and Q 2 dependence of the single photon exchange cross section d 2 σ /d Q 2 d x and the proton structure functions F 2 ( x , Q 2 ) and R ( x , Q 2 ) have been measured in deep inelastic muon proton scattering in the region 0.02 x Q 2 2 . By comparing data at different incident muon energies R was found to have little kinematic dependence and an average value of −0.010 ± 0.037 (stat.) ± 0.102 (stat.). The observed deviations from scaling gave the value of Λ MS , the QCD mass scale parameter, to be 105 −45 +55 (stat.) −45 +85 (syst.) MeV. The fraction of the momentum of the nucleon carried by gluons was found to be ∼56% at Q 2 ∼22.5 GeV 2 . It is shown that to obtain a description of the data for F 2 ( x , Q 2 ) together with that measured in deep inelastic electron-proton scattering at lower Q 2 it is necessary to include additional higher twist contributions. The value of Λ MS remains unchanged with the inclusion of these contributions which were found to have an x -dependence of the form x 3 /(1 − x ).

Published
1985

42. A comparison of the energy distributions of hadrons produced in deep inelastic scattering of muons on hydrogen and deuterium targets

Author

M. Henckes, A.M. Osborne, M. Villers, U. Pietrzyk, R. W. Clifft, M. Edwards, K. Rith, J.K. Davies, Klaus Hamacher, M.I. Ferrero, N. Pavel, V. Gerhardt, Richard Mount, T. J. Sloan, J. Favier, P. Payre, Claus Gössling, W.S.C. Williams, E. Nagy, Y. Declais, H. E. Stier, H. Peschel, A. W. Edwards, J.M. Thenard, E. Böhm, J. Nassalski, J. Haas, P. R. Norton, W. Mohr, F.W. Brasse, C. Best, J. C. Thompson, Adam C. Schneider, D. Williams, W. Stockhausen, M. Leenen, J.H. Cobb, Ulrich Landgraf, W. Flauger, V. Korbel, M. Schneegans, J. Carr, C. Benchouk, G. Eszes, C. Broll, H.E. Montgomery, J. Gayler, J. J. Aubert, F. Combley, M. Maire, U. Dosselli, X. De Bouard, R. Gamet, Stephen Wimpenny, H. Pessard, G. D'Agostini, G. Coignet, M. Whalley, J. McNicholas, J.G. Williamson, G.R. Court, E. Gabathuler, W.D. Dau, Cristiana Peroni, P. Ribarics, K. Moser, P.J. Hayman, J. Drees, G. Bassompierre, L. Urban, H. Forsbach, S.C. Brown, H. Wahlen, B. Korzen, K.H. Becks, 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
Physics, Quark, Particle physics, Muon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Parton, Inelastic scattering, Jet (particle physics), Deep inelastic scattering, 01 natural sciences, 7. Clean energy, Nuclear physics, Deuterium, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Neutron, Nuclear Experiment, 010303 astronomy & astrophysics, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

The energy distribution of inclusive hadrons produced by 280 GeV muons on hydrogen and deuterium targets are compared. The sum of the scaled energy distributions of the positive and negative hadrons is found to be the same for the two targets. The difference of these distributions is observed to factorise inx andz and thez-dependence is found to be independent of the target type and have a form (1−z)2.1±0.2. The net charge of the hadronic jet is positive at highx even in the case when the scattering takes place on the neutron. These results are in good agreement with the expectations of the Quark Parton Model.

Published
1986

43. Comparison of multiplicity distributions to the negative binomial distribution in muon-proton scattering

Author

Uwe Pietrzyk, E. Böhm, Michele Arneodo, Geoffrey Taylor, A. W. Edwards, F. Combley, T. Dreyer, H. Brück, J.M. Thenard, M. Maire, Roland Windmolders, V. Eckhard, F. G. Oakham, H. Schiemann, Hans Calén, H. E. Stier, Norbert Schmitz, G. Kellner, Sven Kullander, L. Urban, A. Arvidson, P. R. Norton, S. Maselli, Michael Düren, K. Schultze, H. Peschel, D. Lanske, F.J. Hasert, A. Manz, M. Whalley, C. Peroni, J. Favier, M. Scholz, G. D'Agostini, J. Ftáčnik, A. de la Torre, V. Korbel, I. G. Bird, F. Montanet, P. Grafström, M. Studt, M. Schneegans, H. Pessard, J. Krüger, G. Coignet, Adam C. Schneider, G. Eszes, J. Beaufays, A.M. Osborne, A. Schlagböhmer, C. Benchouk, A. S. Johnson, P.J. Hayman, Ph. Heusse, P. B. Renton, C. Broll, F.W. Brasse, Jane Coughlan, H.E. Montgomery, M. Pötsch, J. Gayler, Jozsef Toth, M. Edwards, S.C. Brown, J. C. Thompson, R. Gamet, C. P. Bee, P. Malecki, E. M. Kabuss, P. Ribarics, K. Rith, E. Gabathuler, W. Wallucks, T. J. Sloan, T. Ernst, A. Jacholkowska, B. Badelek, J. Drees, W.S.C. Williams, J. Foster, S. Wheeler, J. Nassalski, B. Pönsgen, M. Jaffré, J. Figiel, N. Geddes, G. Berghoff, G. Jancso, Stephen Wimpenny, M. Scheer, K. Long, Ulrich Landgraf, B. Pietrzyk, J. Pettinghale, A. Sandacz, C. Pascaud, E. Nagy, S. Dahlgren, R. W. Clifft, B. Pawlik, J. S. Chima, E. Rondio, E. Hagberg, F. Grard, W. Flauger, I. Derado, W. Mohr, H. M. Braun, J. Gajewski, J. G. Loken, M. I. Ferrero, F. Janata, P. Payre, T. Schröder, D. Blum, F. Dengler, J. Haas, Gy. Wolf, J. J. Aubert, X. De Bouard, and Jacek Ciborowski

Subjects
Physics, Particle physics, Muon, Physics and Astronomy (miscellaneous), Scattering, Hadron, Negative binomial distribution, Parameterized complexity, Multiplicity (mathematics), Nuclear physics, Proton scattering, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

The multiplicity distributions of charged hadrons produced in the deep inelastic muon-proton scattering at 280 GeV are analysed in various rapidity intervals, as a function of the total hadronic centre of mass energy W ranging from 4–20 GeV. Multiplicity distributions for the backward and forward hemispheres are also analysed separately. The data can be well parameterized by binomial distributions, extending their range of applicability to the case of lepton-proton scattering. The energy and the rapidity dependence of the parameters is presented and a smooth transition from the negative binomial distribution via Poissonian to the ordinary binomial is observed.

Published
1987

44. A measurement of wide angle bremsstrahlung in a high energy muon scattering experiment as a check on the consistency of radiative correction calculations

Author

E. Schlösser, P.F. Dalpiaz, Claus Gössling, E. Nagy, D. Williams, R. W. Clifft, G. Bassompierre, F.W. Brasse, J.H. Cobb, M. Leenen, E. Böhm, P. Payre, L. Urban, J. J. Aubert, Uwe Pietrzyk, H. E. Stier, Joshua Thompson, P. Ghez, W.S.C. Williams, H. Jokisch, A. W. Edwards, J.M. Thenard, K. Moser, M. Schneegans, J. Favier, P. R. Norton, X. De Bouard, K. Rith, W. Stockhausen, J.K. Davies, E. Gabathuler, Klaus Hamacher, U. Dosselli, P. Gregory, C. Broll, H.E. Montgomery, S.C. Brown, M.I. Ferrero, H. Wahlen, J. Gayler, V. Gerhardt, Jennifer S. Haas, F. Combley, M. Maire, M. Henckes, R. Gamet, J. M. Crespo, R.W. Dobinson, P. Dalpiaz, G. Coignet, Ulrich Landgraf, J. Drees, W.D. Dau, U. Hahn, P.J. Hayman, C. Best, L. Massonnet, M. C. Edwards, G. R. Court, V. Korbel, W. Flauger, W. Mohr, J. Carr, K.H. Becks, Richard Mount, J. McNicholas, Y. Declais, Stephen Wimpenny, H. Pessard, Cristiana Peroni, A.M. Osborne, and T. J. Sloan

Subjects
Physics, Range (particle radiation), Photon, Muon, Physics and Astronomy (miscellaneous), Scattering, Bremsstrahlung, Astrophysics::Cosmology and Extragalactic Astrophysics, Kinematics, Nuclear physics, Radiative transfer, High Energy Physics::Experiment, Engineering (miscellaneous), Liquid hydrogen, Particle Physics - Experiment
Abstract

The yield of wide angle bremsstrahlung photons produced by 120 GeV muons incident on a liquid hydrogen target has been measured in the kinematic range 0.3

Published
1981

45. A study of trimuon events in 280 GeV muon interactions

Author

H. Wahlen, Cristiana Peroni, G. Coignet, H. Jokisch, E. Schlösser, P.F. Dalpiaz, J. J. Aubert, H. Pessard, Joshua Thompson, H. E. Stier, K. Moser, M. Schneegans, G.R. Court, Stephen Wimpenny, J. Favier, E. Gabathuler, J. H. Field, L. Urban, W. Stockhhausen, Klaus Hamacher, P. Ghez, E. Böhm, P. Dalpiaz, Claus Gössling, M. C. Edwards, A.M. Osborne, T. J. Sloan, W.S.C. Williams, R.W. Dobinson, P. Payre, J. Drees, A. Melissinos, F.W. Brasse, V. Korbel, J. Kadyk, D. Williams, J.H. Cobb, C. Best, R. Gamet, J. Carr, J.K. Davies, M.I. Ferrero, M. Henckes, W. Flauger, K. Rith, F. Combley, M. Maire, P.J. Hayman, W. Mohr, K.H. Becks, Richard Mount, Y. Declais, W.D. Dau, Jennifer S. Haas, J. M. Crespo, R. W. Clifft, L. Massonnet, Uwe Pietrzyk, U. Hahn, A. W. Edwards, J.M. Thenard, P. R. Norton, C. Broll, H.E. Montgomery, J. Gayler, and G. Bassompierre

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Muon, Calorimeter (particle physics), Hadron, Production model, High Energy Physics::Experiment, Interaction model, Nuclear Experiment, Particle Physics - Experiment
Abstract

In 280 GeV μ+ iron interactions the inelastic production of muon pairs has been observed in excess of QED processes. For energies greater than 20 GeV deposited in the target calorimeter the interactions are found to be mainly hadronic. Cross sections are presented for this process in the mass range 1−2.5 GeV/c2 and in the kinematic regions covered by the apparatus acceptance. The data are in good agreement with a photon-gluon fusion model for charmed particle production.

Published
1980

46. A high resolution beam hodoscope counter for use in very intense beams

Author

J. M. Crespo, C. Peroni, G. Bassompierre, M. Moynot, G. Coignet, J.J. Aubert, Y. Declais, J.M. Thenard, P. Payre, L. Massonnet, M.A. Schneegans, BOMBAR, Claudine, Laboratoire d'Annecy de Physique des Particules (LAPP), and 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)

Subjects
Physics, 010308 nuclear & particles physics, business.industry, High intensity, Resolution (electron density), General Medicine, 01 natural sciences, Optics, Hodoscope, [PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, business, Image resolution, Beam (structure)
Abstract

We describe a set of multi-element beam hodoscope counters with a 0.6 mm spatial resolution, very high efficiency and the capability of handling the high intensity beams of the SPS.

Published
1979

47. Indication for neutrino oscillation from a high statistics experiment at the Bugey reactor

Author

J.F. Cavaignac, H. de Kerret, J.M. Thenard, D.H. Koang, H. Pessard, A. Hoummada, B. Vignon, Y. Declais, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, Energy spectrum, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Power reactor, Electron, 010306 general physics, Neutrino oscillation, 7. Clean energy, 01 natural sciences
Abstract

The energy spectrum of electron antineutrinos has been measured at two distances, 13.6 and 18.3. meters, from the core of a PWR power reactor at Bugey (France). About 63 000 antineutrino events have been recorded using the inverse β-decay reaction ν e+p→n+e+. We observe a difference in the counting rates between the two positions. The compatibility of the results with solutions in a two-neutrino oscillations analysis is discussed.

Published
1984

48. MEASUREMENTS OF THE NUCLEON STRUCTURE FUNCTIONS F2N IN DEEP INELASTIC MUON SCATTERING FROM DEUTERIUM AND COMPARISON WITH THOSE FROM HYDROGEN AND IRON

Author

J. Drees, H. Wahlen, L. Urban, A.M. Osborne, T. J. Sloan, H. E. Stier, Uwe Pietrzyk, F. Combley, M. Henckes, J.H. Cobb, H. Pessard, F.W. Brasse, C. Best, M. Maire, A. W. Edwards, J.M. Thenard, K. Rith, M. Leenen, J. Favier, P. R. Norton, Joshua Thompson, Claus Goessling, R.W. Dobinson, C. Broll, Klaus Hamacher, Cristiana Peroni, M. Schneegans, H.E. Montgomery, E. Boehm, P. B. Renton, M. Whalley, J. Gayler, K. Moser, G. D'Agostini, W.D. Dau, S.C. Brown, J.G. Williamson, E. Gabathuler, G. Bassompierre, R. Gamet, W. Stockhausen, W.S.C. Williams, Jennifer S. Haas, Ulrich Landgraf, P.J. Hayman, J.K. Davies, P. Payre, M.I. Ferrero, V. Gibson, V. Gerhardt, V. Korbel, R. W. Clifft, J. Carr, J. J. Aubert, U. Dosselli, X. De Bouard, G. Coignet, W. Mohr, K.H. Becks, Stephen Wimpenny, Richard Mount, Y. Declais, M. C. Edwards, J. McNicholas, W. Flauger, 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
Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Muon, Hydrogen, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, chemistry.chemical_element, Inelastic scattering, 01 natural sciences, Nuclear physics, Deuterium, chemistry, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Neutron, Atomic physics, 010306 general physics, Nucleon, Particle Physics - Experiment
Abstract

PLAB=280 GEV. THESE DATA OFF DEUTERIUM TARGET REPLACE THE PREVIOUSLY PUBLISHED DATA (REC-ID=591) BY THE EMC . THIS COMPLETES THE FIRST PHASE OF THE NA2 EXPERIMENT. IN THE PAPER THE DEUTERIUM DATA ARE COMBINED WITH THEIR MEASUREMENTS TO PRODUCE NEUTRON STRUCTURE FUNCTIONS AS WELL AS THE DIFFERENCES F2(P)-F2(N) AS WELL AS THE RATIO F2(N)/F2(P). THESE ARE ALL INCLUDED IN THIS RECORD.

Published
1987

49. A search for higher twist effects in the hadronic distributions in deep inelastic muon proton scattering

Author

W.S.C. Williams, M. Edwards, J. Favier, P.J. Hayman, F. Combley, M. Maire, E. Gabathuler, M. Villers, T. J. Sloan, J. Drees, M. I. Ferrero, P. Payre, J. Williamson, A. W. Edwards, J.M. Thenard, G. Bassompierre, Ulrich Landgraf, Claus Gössling, P. R. Norton, F.W. Brasse, C. Best, K.H. Becks, V. Korbel, L. Urban, U. Dosselli, W.D. Dau, M. Leenen, Stephen Wimpenny, J. C. Thompson, R. Gamet, C. Benchouk, R. W. Clifft, C. Broll, Adam C. Schneider, H.E. Montgomery, M. Schneegans, J. Gayler, M. Whalley, J. Carr, Richard Mount, A.M. Osborne, H. Forsbach, M. Henckes, C. Peroni, S.C. Brown, J.K. Davies, H. Pessard, Klaus Hamacher, J. Haas, G.R. Court, J. McNicholas, G. D'Agostini, D. Williams, V. Gerhardt, U. Pietrzyk, H. E. Stier, B. Korzen, W. Stockhausen, J.H. Cobb, H. Peschel, G. Coignet, E. Böhm, K. Rith, Y. Declais, J. J. Aubert, E. Nagy, X. De Bouard, W. Mohr, H. Wahlen, W. Flauger, K. Moser, J. Nassalski, BOMBAR, Claudine, 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), and EMC

Subjects
Physics, Particle physics, Muon, Physics and Astronomy (miscellaneous), [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Nuclear Theory, Momentum transfer, Hadron, Inelastic scattering, 01 natural sciences, Nuclear physics, Proton scattering, 0103 physical sciences, Transverse momentum, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Accelerator Physics, High Energy Physics::Experiment, Angular dependence, Twist, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

The hadronic distributions in Q2, y, z, pT and φ{symbol} in deep inelastic muon proton scattering have been studied to search for higher twist effects in the hadronic final state. The expected effects are not observed. © 1986 Springer-Verlag.

Published
1986

50. Charge and transverse momentum correlations in deep inelastic muon-proton scattering

Author

J. Krüger, M. Whalley, M. Pötsch, F. Dengler, A.M. Osborne, S. Kullander, J. S. Chima, Hans Calén, B. Poensgen, J. Favier, T. J. Sloan, P. Malecki, H. Hruck, J. Pettingale, I. Derado, F. Grard, A. S. Johnson, W. Mohr, Silvia Maselli, I. G. Bird, G. Coignet, Jozsef Toth, C. Pascaud, J. G. Loken, Cristiana Peroni, Christopher Bee, Roland Windmolders, H. E. Stier, E. Böhm, W. Flauger, A. Arvidson, M. Jaffre, Michael Düren, P.J. Hayman, M.I. Ferrero, M. Scholz, G. Kellner, P. Grafström, F. Janata, P. Payre, J. J. Aubert, J. Figiel, F. G. Oakham, H. Pessard, M. Scheer, Michele Arneodo, P. Ribarics, S.C. Brown, W.S.C. Williams, F. Combley, M. Maire, R. Gamet, A. W. Edwards, F. J. Hasert, X. De Bouard, G. Jancso, J. Ciborowski, G. D' Agostini, J.M. Thenard, A. Jacholkowska, J. Beaufays, L. Urban, M. Schouten, P. R. Norton, M. Adwards, B. Pietrzyk, E. M. Kabuss, Ph. Heusse, Ulrich Landgraf, J. Foster, Joshua Thompson, S. Wheeler, G. Berghoff, J. Coughlan, F.W. Brasse, A. de la Torre, J. Nassalski, M. Studt, M. Schneegans, A. Manz, G. Eszes, C. Benchouk, A. Schlagböhmer, Gy. Wolf, N. Geddes, C. Broll, H.E. Montgomery, P. B. Renton, Geoffrey Taylor, E. Hagberg, E. Gabathuler, T. Dreyer, V. Korbel, J. Gayler, T. Ernst, B. Badelek, J. Haas, V. Eckardt, N. Schmitz, H. Schiemann, W. Wallucks, K. Schultze, Stephen Wimpenny, D. Lanske, T. Schröder, Kr Long, J. Gajewski, E. Nagy, D. Blurn, S. Dahlgren, R. W. Clifft, H. M. Braun, J. Drees, B. Pawlik, E. Rondio, F. Montanet, and K. Rith

Subjects
Physics, Muon, Physics and Astronomy (miscellaneous), Scattering, Hadron, Virtual particle, Elementary particle, Hadronization, Nuclear physics, High Energy Physics::Experiment, Rapidity, Decay product, Atomic physics, Nuclear Experiment, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

Correlations between charged hadrons are investigated in a 280 GeV muon-proton scattering experiment. Although most of the observed particles are decay products it is shown that the correlations found originate in the fragmentation process and are not due simply to resonance production. Correlations are demonstrated between hadrons close in rapidity with respect to their charges and to the directions of their momentum components perpendicular to the virtual photon axis. Such short range correlations are predicted by the standard hadronization models.

Published
1986

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