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34 results on '"Y. Declais"'

1. 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

2. 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
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3. 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
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4. Limits on neutrino oscillations from the CHOOZ experiment

Author

M. Apollonio, M. Laiman, L. E. Price, B. Lefievre, Giovanni Santin, V. N. Vyrodov, J. Steele, M. D. Skorokhvatov, D. Kryn, R. Pazzi, A. A. Sabelnikov, Y. Kozlov, S. Riley, A. V. Martemyanov, H. W. Sobel, M. Obolensky, Donato Nicolo, G. Pieri, S. Tomshaw, G. Giannini, A. Baldini, B. D. Dieterle, H. de Kerret, S. V. Sukhotin, Fabrizio Cei, W. R. Kropp, D. Veron, Y. Declais, I. N. Machulin, C. Bemporad, R. Reeder, L. A. Mikaelyan, L. Foresti, M. Grassi, R. Steinberg, A.V. Etenko, C. E. Lane, J. George, V. P. Martemyanov, E. Caffau, Institut de Physique Nucléaire de Lyon (IPNL), 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)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CHOOZ, 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), and Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Normalization (statistics), Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Detector, FOS: Physical sciences, Flux, CHOOZ, 01 natural sciences, 7. Clean energy, Spectral line, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Positron, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Sensitivity (control systems), 010306 general physics, Neutrino oscillation
Abstract

We present new results based on the entire CHOOZ data sample. We find (at 90% confidence level) no evidence for neutrino oscillations in the anti_nue disappearance mode, for the parameter region given by approximately Delta m**2 > 7 x 10**-4 eV^2 for maximum mixing, and sin**2(2 theta) = 0.10 for large Delta m**2. Lower sensitivity results, based only on the comparison of the positron spectra from the two different-distance nuclear reactors, are also presented; these are independent of the absolute normalization of the anti_nue flux, the cross section, the number of target protons and the detector efficiencies., 19 pages, 11 figures, Latex file

Published
1999
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5. Study of reactor antineutrino interaction with proton at Bugey nuclear power plant

Author

H. de Kerret, Y. Kozlov, B. Lefievre, S. V. Sukhotin, M. D. Skorokhvatov, I. N. Machulin, V.P. Martemianov, A.V. Etenko, V. Vyrodov, M. Obolensky, L. A. Mikaelyan, Y. Declais, 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), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and BOMBAR, Claudine

Subjects
Physics, Nuclear and High Energy Physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Proton, 010308 nuclear & particles physics, 7. Clean energy, 01 natural sciences, law.invention, Nuclear physics, Cross section (physics), law, 0103 physical sciences, Nuclear power plant, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Neutron, Atomic physics, 010306 general physics, Electron neutrino, Particle Physics - Experiment, Integral method
Abstract

We report on a high precision measurement at 15m from a 2800 MWth reactor in which 300 000 events of electron antineutrino interactions with proton have been detected using an integral method. The cross section of the neutron inverse beta-decay process has been measured with an accuracy of 1.4%. The ratio of measured cross section to the expected one in the standard V-A theory of weak interactions is: σ ⨍ /σ V−A = 98.7% ± 1.4% ± 2.7% = 0.987 ± 0.030 .

Published
1994
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6. Design and construction of INGRID neutrino beam monitor for T2K neutrino experiment

Author

D. Autiero, A. K. Ichikawa, M. Otani, L. Chaussard, O. Ferreira, M. Besnier, Masashi Yokoyama, N. Nagai, M. Gonin, Tsuyoshi Nakaya, O. Drapier, F. Moreau, A. Minamino, D. Orme, C. Bronner, P. D. Tran, Y. Declais, K. Nitta, 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), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), OPERA, 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)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, Particle physics, Neutrino oscillation, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Beam monitor, Neutrino beam, Scintillator, Tracking (particle physics), 7. Clean energy, 01 natural sciences, 030218 nuclear medicine & medical imaging, Nuclear physics, 03 medical and health sciences, 0302 clinical medicine, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Instrumentation, Physics, T2K, 010308 nuclear & particles physics, Detector, T2K experiment, Neutrino detector, Measurements of neutrino speed, Beam direction, Physics::Accelerator Physics, High Energy Physics::Experiment, Neutrino, Beam (structure)
Abstract

International audience; The INGRID(Interactive Neutrino GRID) detector is designed to measure the neutrino beam direction with a precision better than 1 mrad for T2K experiment. INGRID consists of 16 modules and placed around the beam center at 280 m downstream of the proton beam target. The module is a sandwich of iron targets and scintillator tracking planes which consist of X–Y layers. We have constructed all scintillator tracking planes and measured light yield of all scintillators. Currently we install 1st module into the detector hall and cosmic events are observed. INGRID is ready for 1st neutrino event from April 2009.

Published
2008
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7. Limits on electrochemically induced fusion of deuterium by neutron flux measurements

Author

J. Favier, R. Durand, J. Bouchez, J.P. Wuethrick, R. Aleksan, H. de Kerret, Y. Declais, H. Pessard, M. Obolensky, E. Kajfasz, Johann Collot, Elemer Nagy, M. Avenier, M. C. Cousinou, G. Bagieu, R. Faure, F. Pierre, Y. Dufour, E. Lesquoy, J.F. Cavaignac, D.H. Koang, B. Lefievre, J. Mallet, A. Stutz, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-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), 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 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
Physics, Nuclear and High Energy Physics, Electrolysis, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Analytical chemistry, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Scintillator, 01 natural sciences, 7. Clean energy, law.invention, Nuclear physics, Deuterium, Neutron generator, law, Neutron flux, 0103 physical sciences, Neutron cross section, Nuclear fusion, Neutron, Nuclear Experiment, 010306 general physics
Abstract

Limits on the neutron flux produced by electrochemically induced nuclear fusion reactions have been set using a very efficient and low background detector based on 6 Li doped liquid scintillator to detect the 2.45 MeV neutron. These limits are of the order of 50 neutrons/h for differet electrolysis experimental conditions and are at least 30 times lower than the claimed positive results of Fleischmann and Pons, and of Jones et al.

Published
1990
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8. Search for neutrino oscillations on a long base-line at the CHOOZ nuclear power station

Author

M. Apollonio, D. Veron, M. Laiman, A. V. Martemyanov, S. Tomshaw, I. N. Machulin, J. Steele, M. D. Skorokhvatov, V. N. Vyrodov, S. V. Sukhotin, C. Bemporad, Giovanni Santin, Henry W. Sobel, R. Reeder, L. Foresti, D. Kryn, S. Riley, R. Steinberg, Y. Declais, A.V. Etenko, G. Pieri, V. P. Martemyanov, Donato Nicolo, G. Giannini, Y. Kozlov, R. Pazzi, E. Caffau, H. de Kerret, M. Obolensky, A. Baldini, B. D. Dieterle, L. A. Mikaelyan, B. Lefievre, W. R. Kropp, C. E. Lane, J. George, Fabrizio Cei, A. A. Sabelnikov, L. E. Price, M. Grassi, Institut de Physique Nucléaire de Lyon (IPNL), 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)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CHOOZ, 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), and Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Calibration (statistics), Detector, Monte Carlo method, FOS: Physical sciences, CHOOZ, 01 natural sciences, Stability (probability), High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Neutrino oscillation, Engineering (miscellaneous), Electron neutrino, Event reconstruction
Abstract

This final article about the CHOOZ experiment presents a complete description of the electron antineutrino source and detector, the calibration methods and stability checks, the event reconstruction procedures and the Monte Carlo simulation. The data analysis, systematic effects and the methods used to reach our conclusions are fully discussed. Some new remarks are presented on the deduction of the confidence limits and on the correct treatment of systematic errors., 41 pages, 59 figures, Latex file, accepted for publication by Eur.Phys.J.C

Published
2003
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9. Neutrino-induced deuteron disintegration experiment

Author

Y. Declais, M. D. Skorokhvatov, S. Riley, Z. D. Greenwood, W. R. Kropp, L. R. Price, A.V. Etenko, Frederick Reines, H. W. Sobel, 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), and Flores, Sylvie

Subjects
Physics, Coupling constant, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Hadron, FOS: Physical sciences, Weinberg angle, Weak interaction, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Neutrino scattering, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], High Energy Physics - Experiment (hep-ex), Deuterium, [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, Atomic physics, Neutrino, 010306 general physics
Abstract

Cross sections for the disintegration of the deuteron via neutral-current (NCD) and charged-current (CCD) interactions with reactor antineutrinos are measured to be 6.08 +/- 0.77 x 10^(-45) cm-sq and 9.83 +/- 2.04 x 10^(-45) cm-sq per neutrino, respectively, in excellent agreement with current calculations. Since the experimental NCD value depends upon the CCD value, if we use the theoretical value for the CCD reaction, we obtain the improved value of 5.98 +/- 0.54 x 10^(-45) for the NCD cross section. The neutral-current reaction allows a unique measurement of the isovector-axial vector coupling constant in the hadronic weak interaction (beta). In the standard model, this constant is predicted to be exactly 1, independent of the Weinberg angle. We measure a value of beta^2 = 1.01 +/- 0.16. Using the above improved value for the NCD cross section, beta^2 becomes 0.99 +/- 0.10., Comment: 22pages, 9 figures

Published
1999

10. Comparison of anti-neutrino reactor spectrum models with the Bugey 3 measurements

Author

Jean-Pierre Cussonneau, J. Favier, A. Stutz, J. Bouchez, J.P. Wuthrick, G. Bagieu, R. Brissot, F. Pierre, E. Kajfasz, J. Mallet, R. Aleksan, Elemer Nagy, D.H. Koang, E. Lesquoy, Y. Dufour, M. Avenier, M. Obolensky, Y. Declais, H. Pessard, B. Lefievre, H. de Kerret, B. Achkar, M. C. Cousinou, Johann Collot, J.F. Cavaignac, A. Metref, F. Garciaz, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-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), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-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 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
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Spectrum (functional analysis), 7. Clean energy, 01 natural sciences, Spectral line, Nuclear physics, Nuclear reactor core, Beta (plasma physics), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Neutrino, 010306 general physics, Neutrino oscillation
Abstract

The Bugey 3 neutrino oscillation experiment has provided high statistics neutrino energy spectra recorded at 15 and 40 meters from a nuclear reactor core. Assuming no oscillations, the measured spectra favor a model of reactor spectrum based on the beta spectra measured at ILL.

Published
1996
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11. The Bugey 3 neutrino detector

Author

R. Potheau, J. Ballansat, Y. Dufour, R Aleksan, E. Kajfasz, A Commerçon, L Giacobone, F Pierre, M Obolensky, J Boucher, J Poinsignon, E Lesquoy, J. Berger, J.-F Thomas, J. Favier, F Garciaz, J Bouchez, R Bazzoli, R Provasi, D.H Koang, M. Avenier, Elemer Nagy, R Brissot, B Achkar, G Bagieu, D Jourde, J.P. Jobez, A Oriboni, J Mallet, P. Besson, A. Stutz, M Bouriant, S Ait-Boubker, Y Declais, M. C. Cousinou, J. Thion, B. Camberlin, P Ollive, J Mullié, M Abbes, G Daguin-Moynot, B Guerre-Chaley, B Lefièvre, J.P Cussonneau, Johann Collot, F Léon, H. de Kerret, G Farrache, H. Pessard, Ch Barnoux, Th Desanlis, M. Bermond, P. Charvin, M. Billault, J.F Cavaignac, J.P Wuthrick, J.-M. Dubois, Y. Gally, A Metref, A Menthe, Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-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), 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 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
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Monte Carlo method, Scintillator, 7. Clean energy, 01 natural sciences, Nuclear physics, Neutrino detector, Nuclear reactor core, 0103 physical sciences, Electromagnetic shielding, Neutron, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Neutrino, 010306 general physics, Neutrino oscillation, Instrumentation
Abstract

The Bugey 3 experiment, designed to measure oscillations of reactor neutrinos, has used 3 identical detection modules, each of 600 liters, filled with a new 6 Li-loaded liquid scintillator. These modules were located in two shielding bunkers, respectively 15 and 40 m away from the reactor core. We describe here the mechanical characteristics of these modules, their shielding, the associated electronics, the trigger, the acquisition systems, the calibration and monitoring of these detectors, and the Monte Carlo simulations of their response to particles. We conclude on the overall performance of this new detection technique which has allowed the recording of 120000 neutrino interactions with good neutron efficiency (49%), low background (2.5 evts/hr) and good energy resolution (4% at 4.4 MeV).

Published
1996
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12. Search for the electron-positron decay of axions and axionlike particles at a nuclear power reactor at bugey

Author

C. Hagner, Franz von Feilitzsch, M. Altmann, E. Kajfasz, Lothar Oberauer, Y. Declais, 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 BOMBAR, Claudine

Subjects
Physics, Particle physics, Physics and Astronomy (miscellaneous), [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Branching fraction, Isoscalar, Elementary particle, Electron, 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Positron emission, Quantum field theory, 010306 general physics, Engineering (miscellaneous), Axion, Boson
Abstract

A search for the decay of isoscalar penetrating particles into ane + e-pair has been performed at the nuclear power reactor Bugey 5, situated close to Lyon (France). The detector set-up, consisting of an arrangement of large-area multiwire proportional chambers, and the data analysis are described. No excess of decay events over background has been observed. For standard axions, therefrom, stringent upper limits for the branching ratio 〈Γ a /Γ γ , averaged over the entire reactor gamma spectrum of magnetic multipolarity, have been obtained. Analysis in terms of the decay χ→e ++e − of a more general axionlike boson χ yields new constraints for the decay constantf χ which enhance existing laboratory limits considerably.

Published
1995

13. Exclusive $\rho^0$ production in deep inelastic muon-proton scattering

Author

C. Broll, H.E. Montgomery, Claus Goessling, J. Gayler, J. Drees, H. E. Stier, H. Peschel, J. Favier, E. Gabathuler, H. Wahlen, M. Whalley, G. Bassompierre, J. Williamson, A.M. Osborne, E. Boehm, B. Korzen, L. Urban, G.R. Court, T. J. Sloan, H. Forsbach, F.W. Brasse, C. Best, F. Combley, M. Maire, W. Stockhausen, S.C. Brown, P. Payre, H. Pessard, W. Mohr, J. McNicholas, J. Haas, M. Leenen, D. Williams, Joshua Thompson, R. Gamet, J.H. Cobb, Y. Declais, Stephen Wimpenny, M. C. Edwards, Uwe Pietrzyk, M. Schneegans, K. Ham Acher, M. Henckes, U. Dosselli, A. W. Edwards, G. D'Agostini, K. Moser, J.M. Thenard, W.S.C. Williams, M. Villers, K. Rith, Cristiana Peroni, P. R. Norton, J. Nassalski, C. Benchouk, V. Korbel, W.D. Dau, J. J. Aubert, G. Coignet, Ulrich Landgraf, X. De Bouard, K.H. Becks, J. Carr, W. Flauger, P.J. Hayman, Adam C. Schneider, J.K. Davies, R.P. Mount, M.I. Ferrero, V. Gerhardt, E. Nagy, R. W. Clifft, 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, Nuclear and High Energy Physics, Particle physics, Muon, Photon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Spin states, 010308 nuclear & particles physics, Vector meson dominance, 01 natural sciences, Helicity, Nuclear physics, Transverse plane, Cross section (physics), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Particle Physics - Experiment
Abstract

Exclusive ϱ0 production has been measured in 120, 200 and 280 GeV muon-proton interactions at high Q2 (1 GeV2 < Q2 < 25 GeV2) and W (6 GeV < W < 19 GeV). The photoproduction cross section decreases as 1/Q4. A shallow t distribution, typical of a hard scattering process is observed and the ϱ0 is found to be dominantly in the helicity zero spin state. The ϱ0s are mainly produced by transverse photons and s-channel helicity conservation seems to be invalid. The data cannot be described by the vector meson dominance model. These data show that at high Q2 even exclusive ϱ0 muoproduction is a hard scattering process and that the soft hadron-like properties of the photon have disappeared.

Published
1985

14. 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

15. $\rho^{0}$ 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

16. 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

17. 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

18. Large drift tube arrays with external delay line readout

Author

J. Favier, Y. Declais, G. Perrot, C. Broll, A. Charveys, M. Moynot, M. Lebeau, 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, Drift tube, Muon, 010308 nuclear & particles physics, business.industry, General Engineering, 01 natural sciences, Standard deviation, chemistry.chemical_compound, Optics, chemistry, [PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 0103 physical sciences, Bakelite, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Line (text file), 010306 general physics, business, Image resolution, Electrical conductor
Abstract

We describe here the construction and performance of 2 m long, 5 cm diameter, circular drift tubes made of 1 mm thick bakelite paper coated inside with conductive paint. The longitudinal coordinate is read out with an external delay line system. The measured spatial resolution obtained from the drift time is close to 180 μm (one standard deviation). A system of 1100 tubes has been built for a muon experiment.

Published
1983

19. 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

20. 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

21. 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

22. 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

23. A search for axions at a power reactor

Author

A. Hoummada, G. Girardi, B. Vignon, H. Pessard, D.H. Koang, J.F. Cavaignac, Y. Declais, B. Ost, J.M. Thenard, H. de Kerret, Richard Wilson, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), 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), 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
Coupling constant, Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Niobium, chemistry.chemical_element, Power reactor, 01 natural sciences, Nuclear physics, Formalism (philosophy of mathematics), chemistry, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Experimental methods, 010306 general physics, Axion
Abstract

A search has been conducted for the axion at the Bugey reactor which is owned and operated by Electricite de France. The axion production should be proportional to the magnetic transition of np capture, and be detectable by its decay into 2γ rays. No signal was observed in this measurement. Also no axion signal was seen from a single proton magnetic transition of 97Nb. Using those two results, the axion can be excluded with a mass up to 1 MeV in the Peccei-Quinn formalism.

Published
1983

24. A SEARCH FOR THE DECAY D0-]MU+MU(-)

Author

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

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Scattering, Branching fraction, 0103 physical sciences, High resolution, High Energy Physics::Experiment, 010306 general physics, 01 natural sciences
Abstract

μ+μ− pairs have been observed in deep inelastic muon-nucleon scattering and their masses measured with high resolution. No significant signal was observed at the D0 mass. These data allow an upper limit of 3.4 × 10−4 (90% confidence level) to be placed on the branching ratio for the decay mode D0 → μ+μ−.

Published
1985

25. New experimental limits on radiative neutrino decay

Author

Y. Declais, J. Bouchez, B. Pichard, J.P. Soirat, Michel Spiro, 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, Nuclear and High Energy Physics, Photomultiplier, Range (particle radiation), Particle physics, Photon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Solar neutrino, Solar neutrino problem, 01 natural sciences, 7. Clean energy, Nuclear physics, Wavelength, 13. Climate action, 0103 physical sciences, Radiative transfer, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Neutrino, 010306 general physics
Abstract

We have searched for radiative decays of electron-antineutrinos produced by a nuclear reactor giving photons with wavelenghts in the sensitivity range of a photomultiplier. The absence of signal puts stringent limits on such a decay, and excludes it as an explanation for the solar neutrino problem, even for nearly degenerate masseigenstates, provided that Δm / m > 3 × 10 −7 . No previous limits, including those coming from SN 1987A, could exclude such as explanation for small values of Δm / m .

Published
1988

26. D0 production in deep inelastic muon scattering on hydrogen and deuterium

Author

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

Inclusive D 0 ( D 0 ) production in deep inelastic scattering of 280 GeV and 240 GeV muons on hydrogen and deuterium targets has been measured; differential cross sections are given and the total cross sections extrapolated to Q 2 = 0. They are compared with the results of photoproduction experiments and with measurements of the muoproduction of charm detected indirectly by multimuon events.

Published
1986

27. A comparison of proton, antiproton and meson distributions in final states of deep inelastic muon scattering

Author

F.W. Brasse, W.S.C. Williams, A.M. Osborne, T. J. Sloan, L. Urban, Uwe Pietrzyk, A. W. Edwards, J.M. Thenard, M. Leenen, P. R. Norton, W. Flauger, Joshua Thompson, R. W. Clifft, M. C. Edwards, Cristiana Peroni, M. Schneegans, H. E. Stier, Stephen Wimpenny, U. Dosselli, H. Forsbach, S.C. Brown, F. Combley, M. Maire, V. Korbel, W. Stockhausen, J. Favier, W. Mohr, H. Pessard, M. Villers, G. D'Agostini, P.J. Hayman, J. Carr, G. Coignet, Jennifer S. Haas, D. Williams, M. Henckes, Claus Goessling, Klaus Hamacher, M. Whalley, C. Benchouk, J. Nassalski, E. Nagy, J.H. Cobb, J. McNicholas, G.R. Court, R. Gamet, H. Minssieux, J.G. Williamson, J. J. Aubert, K. Rith, X. De Bouard, E. Gabathuler, C. Best, J. Drees, Ulrich Landgraf, W.D. Dau, G. Bassompierre, E. Boehm, K.H. Becks, P. Payre, Richard Mount, Y. Declais, K. Moser, J.K. Davies, M.I. Ferrero, V. Gerhardt, H. Wahlen, C. Broll, H.E. Montgomery, J. Gayler, 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, Quark, Nuclear and High Energy Physics, Particle physics, Muon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Proton, Meson, 010308 nuclear & particles physics, High Energy Physics::Lattice, High Energy Physics::Phenomenology, Nuclear Theory, Jet (particle physics), 01 natural sciences, Gluon, Baryon, Nuclear physics, Antiproton, 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

New results on the forward produced protons and antiprotons in high energy muon-nucleon scattering are presented. Their W 2 , z and p 2 T dependences are compared with those of the other charged hadrons. Significant differences are observed which can be related to the flavour content of the target and to a difference between the baryon content of quark and gluon jets.

Published
1984

28. Balance of transverse momentum of hadrons produced in deep inelastic muon-proton scattering

Author

C. Broll, E. Böhm, H.E. Montgomery, L. Urban, D. Williams, J.H. Cobb, P. Payre, J. Gayler, J. McNicholas, S.C. Brown, H. Forscbach, Claus Gössling, Cristiana Peroni, Richard Mount, M. C. Edwards, M. Henckes, R. Gamet, F.W. Brasse, J. Favier, P. Dalpiaz, M. Villers, P.F. Dalpiaz, Y. Declais, Klaus Hamacher, E. Nagy, F. Combley, M. Maire, C. Best, R. W. Clifft, Ulrich Landgraf, V. Korbel, M. Leenen, K. Moser, Joshua Thompson, Uwe Pietrzyk, Stephen Wimpenny, M. Schneegans, M. Whalley, A.M. Osborne, U. Dosselli, A. W. Edwards, T. J. Sloan, J.M. Thenard, K.H. Becks, H. Wahlen, H. Pessard, G. D'Agostini, P. R. Norton, G.R. Court, J.K. Davies, W.S.C. Williams, H. E. Stier, J. Carr, G. Bassompierre, M.I. Ferrero, P.J. Hayman, V. Gerhardt, J. Nassalski, P. Gregory, G. Coignet, H. Minssieux, W.D. Dau, W. Flauger, W. Stockhausen, Jennifer S. Haas, W. Mohr, J. Drees, K. Rith, R.W. Dobinson, J. J. Aubert, J. M. Crespo, L. Massonnet, X. De Bouard, E. Gabathuler, 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, Particle physics, Muon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Elementary particle, Parton, Inelastic scattering, Deep inelastic scattering, 01 natural sciences, Gluon, 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

Data are presented on the balance of transverse momenta of final state charged hadrons in 280 GeV muon-proton scattering. In particular the way in which the transverse momentum of either leading particles (z > 0.5) f high pT particles (pT2 > 2 GeV2) is compensated by further hadrons in the forward hemisphere is studied. The results are consistent with a QCD based model. The agreement is achieved by including in the model the emission of soft gluons and assuming that the partons have a distribution of primordial transverse momentum with 〈kT2〉 {reversed tilde equals} 0.2 GeV2, a value considerably less then found in previous analyses. © 1982.

Published
1982

29. Measurement of the real part of the forward amplitude in $K^{-}n$ and $K^{+}n$ elastic scattering at 10 GeV/c and a new $K^{\pm}n$ dispersion relation

Author

Jacques Séguinot, M. Ferro-Luzzi, J.M. Perreau, T. Ypsilantis, Peter Jenni, Y. Declais, Paul Baillon, 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 BOMBAR, Claudine

Subjects
Physics, Elastic scattering, Nuclear and High Energy Physics, Large Hadron Collider, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering length, 01 natural sciences, Scattering amplitude, Amplitude, Dispersion relation, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Particle Physics - Experiment
Abstract

CERN. A NEW DISPERSION RELATION FIT TO ALL EXISTING K+ N AND K- N DATA FROM THRESHOLD TO 150 GEV/C IS GIVEN.

Published
1977

30. Hadron production in 200 GeV $\mu$-copper and $\mu$-carbon deep inelastic interactions

Author

J. M. Crespo, E. Böhm, C. Best, M. Whalley, L. Massonnet, L. Urban, G.R. Court, M. Henckes, Claus Gössling, P. Payre, M. Villers, P.F. Dalpiaz, A.M. Osborne, T. J. Sloan, H. Forsbach, Richard Mount, H. Pessard, F.W. Brasse, K.H. Becks, J. Favier, J.G. Williamson, E. Gabathuler, A. Arvidson, S.C. Brown, Y. Declais, C. Broll, H.E. Montgomery, D. Williams, Klaus Hamacher, J. Gayler, K. Moser, M. Leenen, J.H. Cobb, G. Bassompierre, Cristiana Peroni, Joshua Thompson, R. Gamet, Uwe Pietrzyk, M. C. Edwards, A. W. Edwards, Stephen Wimpenny, M. Schneegans, J.M. Thenard, P.J. Hayman, U. Dosselli, J.K. Davies, P. R. Norton, M.I. Ferrero, J. J. Aubert, J. Nassalski, R.W. Dobinson, G. D'Agostini, V. Gerhardt, W.S.C. Williams, H. Wahlen, X. De Bouard, G. Coignet, V. Korbel, J. McNicholas, J. Carr, P. Dalpiaz, H. Minssieux, W. Stockhausen, Jennifer S. Haas, W.D. Dau, C. Benchouk, F. Combley, M. Maire, W. Mohr, E. Nagy, R. W. Clifft, W. Flauger, Ulrich Landgraf, H. E. Stier, P. Gregory, K. Rith, J. Drees, 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, Nuclear and High Energy Physics, Particle physics, Muon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, Hadron, Absorption cross section, chemistry.chemical_element, Virtual particle, Parton, 7. Clean energy, 01 natural sciences, Copper, Nuclear physics, Fragmentation (mass spectrometry), chemistry, 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 measurements of the z and p T 2 distribution of hadrons produced in the interactions of 200 GeV muons with copper and carbon nuclei are shown in different x Bj and virtual photon energy intervals. Effects of the jet scattering are seen at the lowest virtual photon energies while for energies above 70 GeV there is no evidence of these effects. Comparison with a theoretical model indicates that at high jet energies the parton fragmentation distance is greater than the nuclear radius and that the parton absorption cross section is less than 10 mb.

Published
1984

31. Charm production in deep inelastic muon-iron interactions at 200 geV/c

Author

H. Pessard, W.D. Dau, C. Benchouk, H. E. Stier, M. Whalley, Claus Goessling, F. Combley, M. Maire, Silvia Maselli, G.R. Court, J.K. Davies, E. Nagy, J. Favier, V. Korbel, J. Williamson, R.P. Mount, J. Nassalski, K.H. Becks, K. Rith, U. Dosselli, M.I. Ferrero, H. Forsbach, K. Moser, S.C. Brown, Klaus Hamacher, L. Urban, C. Best, W.S.C. Williams, P. Payre, H. Wahlen, V. Gerhardt, W. Mohr, D. Williams, J. J. Aubert, J. Carr, M. Leenen, F.W. Brasse, J.H. Cobb, Joshua Thompson, W. Stockhausen, M. Schneegans, X. De Bouard, M. Henckes, J. Drees, R. W. Clifft, G. Coignet, G. D'Agostini, J. McNicholas, Y. Declais, E. Gabathuler, Uwe Pietrzyk, Stephen Wimpenny, Michele Arneodo, G. Bassompierre, Ulrich Landgraf, A. W. Edwards, J.M. Thenard, J. Haas, P. R. Norton, M. C. Edwards, A.M. Osborne, W. Flauger, T. J. Sloan, C. Broll, H.E. Montgomery, Cristiana Peroni, J. Gayler, P.J. Hayman, E. Boehm, R. Gamet, 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, Scattering cross-section, Particle physics, Photon, Muon, Physics and Astronomy (miscellaneous), [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Virtual particle, Parity (physics), 01 natural sciences, Gluon, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

Dimuon and trimuon events have been studied in deep inelastic muon scattering on an iron target at an incident muon energy of 200 GeV. The events are shown to originate mainly from charm production. Comparison of the measured cross sections with data taken at higher muon energies shows that charm production originates predominantly from transverse virtual photons. Within the framework of the photon gluon fusion model this indicates that the parity of the gluon is odd. © 1987 Springer-Verlag.

Published
1987

32. A measurement of the difference between the single-nucleon cross sections for j/$\psi$ muoproduction in iron and in H$_2$, D$_2$ targets

Author

J. Favier, J. McNicholas, V. Korbel, M. Leenen, Uwe Pietrzyk, Joshua Thompson, H. Wahlen, F. Combley, Klaus Hamacher, A. W. Edwards, M. Maire, F.W. Brasse, M. Schneegans, Stephen Wimpenny, R. W. Clifft, J.M. Thenard, Cristiana Peroni, W. Stockhausen, P. R. Norton, K.H. Becks, M. Villers, G.R. Court, G. D'Agostini, J. Carr, H. E. Stier, C. Broll, Jennifer S. Haas, H.E. Montgomery, W.S.C. Williams, J.G. Williamson, E. Gabathuler, H. Pessard, K. Rith, Richard Mount, G. Bassompierre, L. Urban, M. Henckes, J. Gayler, P.J. Hayman, H. Forsbach, R. Gamet, Y. Declais, Ulrich Landgraf, W.D. Dau, S.C. Brown, W. Mohr, C. Benchouk, D. Williams, J.H. Cobb, E. Nagy, J. Drees, K. Moser, C. Best, M. C. Edwards, A.M. Osborne, T. J. Sloan, U. Dosselli, E. Boehm, M. Walley, I. G. Bird, W. Flauger, G. Coignet, J. Nassalski, Claus Goessling, P. Payre, J.K. Davies, M.I. Ferrero, V. Gerhardt, J. J. Aubert, X. De Bouard, 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, Systematic error, Nuclear and High Energy Physics, Range (particle radiation), Hydrogen, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, chemistry.chemical_element, 01 natural sciences, 7. Clean energy, Gluon, Nuclear physics, Deuterium, chemistry, 0103 physical sciences, Energy spectrum, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Atomic physics, 010306 general physics, Nucleon, Particle Physics - Experiment
Abstract

The cross sections for J ψ production have been measured in interactions of 280 GeV μ + on hydrogen and deuterium (H, D) and also in interactions of 250 GeV μ + on iron. The single-nucleon cross sections in iron are found to be larger than those in H, D. The mean ratio of the iron to H, D photoproduction cross sections in the range 60 v GeV is 1.45 ±0.12 (statistical) ±0.22 (systematic error). Within the framework of the photon-gluon fusion model, this indicates that the gluon density per nucleon is ∼45% larger in iron than in H, D in the range 0.026 x Q 2 eff ∼M 2 J ψ .

Published
1985

33. A large multi-cell threshold gas cherenkov counter

Author

J.M. Thenard, L. Urban, P. Payre, Y. Declais, G. Bassompierre, J.J. Aubert, 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, Muon, Large Hadron Collider, 010308 nuclear & particles physics, Cherenkov detector, Scattering, chemistry.chemical_element, General Medicine, 01 natural sciences, law.invention, European Muon Collaboration, Nuclear physics, Neon, Pion, chemistry, law, [PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 0103 physical sciences, High Energy Physics::Experiment, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Atomic physics, 010306 general physics, Cherenkov radiation
Abstract

A large multi-cell threshold gas Cherenkov counter consisting of 78 cells has been built for use in a high energy muon scattering experiment at CERN (European Muon Collaboration). It is used with neon, nitrogen or a mixture of these two gases, allowing the pion threshold to be varied between 6 and 20 GeV/ c . The sensitive region of the counter has a length of 4.0 m and entrance and exit windows of 1.1 × 2.4 m 2 and 2.4 × 5.0 m 2 , respectively.

Published
1981

34. Momentum measurement by the Multiple Coulomb Scattering method in the OPERA lead emulsion target

Author

Toshiyuki Nakano, G. De Lellis, M. Paniccia, Akitaka Ariga, Kunihiro Morishima, N. Agafonova, Shigeki Aoki, M. S. Vladimirov, K. Pretzl, Amina Zghiche, Mario Stipčević, B. D. Park, S. Zemskova, A. Di Crescenzo, O. Egorov, Satoru Takahashi, Ante Ljubičić, M. Nakamura, L. Chaussard, Yoshihiro Sato, M. T. Muciaccia, M. Hierholzer, C. Göllnitz, Alessandro Paoloni, C. S. Yoon, Antonio Ereditato, J. Yoshida, A. M. Guler, H. Schroeder, A. V. Bagulya, A. M. Anokhina, N. G. Polukhina, L. Stanco, S. Dmitrievski, Björn Wonsak, C. Sirignano, A. Trabelsi, U. Kose, M. Chernyavskiy, L. Patrizii, G. Mandrioli, H. Kubota, D. Autiero, Anselmo Meregaglia, N. Di Marco, B. Klicek, R. Rescigno, L. Scotto Lavina, S. Dusini, F. Dal Corso, F. Brunet, V. Tioukov, I. Rostovtseva, A. Badertscher, A. Longhin, N. I. Starkov, J. Marteau, G. Shoziyoev, A. Garfagnini, S. Ogawa, G. Grella, A. Bertolin, V. Pilipenko, Y. Nonoyama, Masahiro Komatsu, G. Romano, Y. A. Gornushkin, Koichi Kodama, R. Brugnera, E. Pennacchio, Naotaka Naganawa, A. Schembri, F. Meisel, R. Zimmermann, Cristiano Bozza, J. S. Song, T. Matsuo, J. Lenkeit, Maximiliano Sioli, M. Kimura, N. M. Okateva, P. F. Loverre, D. Duchesneau, André Rubbia, G. Giacomelli, Pierre Vilain, Caren Hagner, U. Moser, P. Strolin, Marcos Dracos, I. Kreslo, K Kazuyama, J. Goldberg, Osamu Sato, V. Nikitina, Alexander Olshevskiy, R. I. Enikeev, G. Rosa, Timur Dzhatdoev, M. Besnier, A. Ben Dhahbi, A. Russo, O. G. Ryazhskaya, Krešimir Jakovčić, F. Terranova, M. Tenti, F. Pupilli, I. G. Park, M. Spinetti, C. Pistillo, S. Tufanli, V. G. Ryasny, K. Hoshino, T. Strauss, Guillaume Lutter, K. Manai, Tomoko Ariga, M. De Serio, K. Hamada, Dmitry V. Naumov, Luigi Salvatore Esposito, A. Sheshukov, S. Miyamoto, M. Giorgini, A. Hollnagel, Seok Kim, M. Pozzato, Alessandra Pastore, I. Tezuka, V. F. Yakushev, T. Yoshioka, G. Sirri, M. Ieva, V. A. Matveev, Ivano Lippi, Artem Chukanov, J. Favier, L. A. Goncharova, O Altinok, T. Fukuda, J. L. Vuilleumier, P. Del Amo Sanchez, Kimio Niwa, A. Cazes, Gaston Wilquet, P. Tolun, S. Buontempo, J. Ebert, F. Di Capua, S. Simone, Hiroki Rokujo, G. Brunetti, Dmitry Golubkov, J. Knuesel, T. Tran, Nobuko Kitagawa, C. Gustavino, W. Schmidt-Parzefall, Torben Ferber, T. Hara, P. Migliozzi, F. Juget, H. Ishida, H. Pessard, F. Grianti, T. Brugière, R. A. Fini, V. Chiarella, A. S. Malgin, E. Medinaceli, P. Monacelli, A. B. Aleksandrov, D. Frekers, T. M. Roganova, N. Mauri, Y. Déclais, Nicola D'Ambrosio, Tatsuhiro Naka, L. Votano, D. Di Ferdinando, S. Mikado, Yu. Zaitsev, M. Kamiscioglu, C Lazzaro, Cécile Jollet, H. Shibuya, 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), 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 Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), OPERA, N. AGAFONOVA, A. ALEKSANDROV, O. ALTINOK, A. ANOKHINA, S. AOKI, A. ARIGA, T. ARIGA, D. AUTIERO, A. BADERTSCHER, A. BAGULYA, A. BEN DHAHBI, A. BERTOLIN, M. BESNIER, C. BOZZA, T. BRUGIERE, R. BRUGNERA, F. BRUNET, G. BRUNETTI, S. BUONTEMPO, A. CAZES, L. CHAUSSARD, M. CHERNYAVSKIY, V. CHIARELLA, A. CHUKANOV, N. D’AMBROSIO, F. DAL CORSO, G. DE LELLIS, P. DEL AMO SANCHEZ, Y. DECLAIS, M. DE SERIO, F. DI CAPUA, A. DI CRESCENZO, D. DI FERDINANDO, N. DI MARCO, S. DMITRIEVSKI, M. DRACOS, D. DUCHESNEAU, S. DUSINI, T. DZHATDOEV, J. EBERT, O. EGOROV, R. ENIKEEV, A. EREDITATO, L. S. ESPOSITO, J. FAVIER, T. FERBER, R. A. FINI, D. FREKERS, T. FUKUDA, A. GARFAGNINI, G. GIACOMELLI, M. GIORGINI, C. GOLLNITZ, J. GOLDBERG, D. GOLUBKOV, L. GONCHAROVA, Y. GORNUSHKIN, G. GRELLA, F. GRIANTI, A. M. GULER, C. GUSTAVINO, C. HAGNER, K. HAMADA, T. HARA, M. HIERHOLZER, A. HOLLNAGEL, K. HOSHINO, M. IEVA, H. ISHIDA, K. JAKOVCIC, C. JOLLET, F. JUGET, M. KAMISCIOGLU, K. KAZUYAMA, S. H. KIM, M. KIMURA, N. KITAGAWA, B. KLICEK, J. KNUESEL, K. KODAMA, M. KOMATSU, U. KOSE, I. KRESLO, H. KUBOTA, C. LAZZARO, J. LENKEIT, I. LIPPI, A. LJUBICIC, A. LONGHIN, P. LOVERRE, G. LUTTER, A. MALGIN, G. MANDRIOLI, K. MANAI, J. MARTEAU, T. MATSUO, V. MATVEEV, N. MAURI, E. MEDINACELI, F. MEISEL, A. MEREGAGLIA, P. MIGLIOZZI, S. MIKADO, S. MIYAMOTO, P. MONACELLI, K. MORISHIMA, U. MOSER, M. T. MUCIACCIA, N. NAGANAWA, T. NAKA, M. NAKAMURA, T. NAKANO, D. NAUMOV, V. NIKITINA, K. NIWA, Y. NONOYAMA, S. OGAWA, N. OKATEVA, A. OLSHEVSKIY, M. PANICCIA, A. PAOLONI, B. D. PARK, I. G. PARK, A. PASTORE, L. PATRIZII, E. PENNACCHIO, H. PESSARD, K. PRETZL, V. PILIPENKO, C. PISTILLO, N. POLUKHINA, M. POZZATO, F. PUPILLI, R. RESCIGNO, T. ROGANOVA, H. ROKUJO, G. ROMANO, G. ROSA, I. ROSTOVTSEVA, A. RUBBIA, A. RUSSO, V. RYASNY, O. RYAZHSKAYA, O. SATO, Y. SATO, A. SCHEMBRI, W. SCHMIDT-PARZEFALL, H. SCHROEDER, L. SCOTTO LAVINA, A. SHESHUKOV, H. SHIBUYA, G. SHOZIYOEV, S. SIMONE, M. SIOLI, C. SIRIGNANO, G. SIRRI, J. S. SONG, M. SPINETTI, L. STANCO, N. STARKOV, M. STIPCEVIC, T. STRAUSS, P. STROLIN, S. TAKAHASHI, M. TENTI, F. TERRANOVA, I. TEZUKA, V. TIOUKOV, P. TOLUN, A. TRABELSI, T. TRAN, S. TUFANLI, P. VILAIN, M. VLADIMIROV, L. VOTANO, J. L. VUILLEUMIER, G. WILQUET, B. WONSAK, V. YAKUSHEV, C. S. YOON, T. YOSHIOKA, J. YOSHIDA, Y. ZAITSEV, S. ZEMSKOVA, A. ZGHICHE, R. ZIMMERMANN, DIP. DI FISICA, DIPARTIMENTO DI FISICA E ASTRONOMIA 'AUGUSTO RIGHI', Facolta' di SCIENZE MATEMATICHE FISICHE e NATURALI, Da definire, AREA MIN. 02 - Scienze fisiche, Agafonova, N, Aleksandrov, A, Altinok, O, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Bagulya, A, Ben Dhahbi, A, Bertolin, A, Besnier, M, Bozza, C, Brugière, T, Brugnera, R, Brunet, F, Brunetti, G, Buontempo, S, Cazes, A, Chaussard, L, Chernyavskiy, M, Chiarella, V, Chukanov, A, D'Ambrosio, N, Dal Corso, F, De Lellis, G, del Amo Sanchez, P, Déclais, Y, De Serio, M, Di Capua, F, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, S. Esposito, L, Favier, J, Ferber, T, A. Fini, R, Frekers, D, Fukuda, T, Garfagnini, A, Giacomelli, G, Giorgini, M, Göllnitz, C, Goldberg, J, Golubkov, D, Goncharova, L, Gornushkin, Y, Grella, G, Grianti, F, M. Guler, A, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hollnagel, A, Hoshino, K, Ieva, M, Ishida, H, Jakovcic, K, Jollet, C, Juget, F, Kamiscioglu, M, Kazuyama, K, H. Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Kubota, H, Lazzaro, C, Lenkeit, J, Lippi, I, Ljubicic, A, Longhin, A, Loverre, P, Lutter, G, Malgin, A, Mandrioli, G, Manai, K, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, T. Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Naumov, D, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Okateva, N, Olshevskiy, A, Paniccia, M, Paoloni, A, D. Park, B, G. Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pretzl, K, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pupilli, F, Rescigno, R, Roganova, T, Rokujo, H, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Schmidt Parzefall, W, Schroeder, H, Scotto Lavina, L, Sheshukov, A, Shibuya, H, Shoziyoev, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, S. Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Trabelsi, A, Tran, T, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, L. Vuilleumier, J, Wilquet, G, Wonsak, B, Yakushev, V, S. Yoon, C, Yoshioka, T, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, DE LELLIS, Giovanni, DI CRESCENZO, Antonia, and Strolin, PAOLO EMILIO

Subjects
Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Monte Carlo method, FOS: Physical sciences, General Physics and Astronomy, 01 natural sciences, High Energy Physics - Experiment, Momentum, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, 0103 physical sciences, NEUTRINO, NUCLEAR EMULSION, PARTICLE DETECTORS, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear emulsion, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Detectors and Experimental Techniques, 010306 general physics, Nuclear Experiment, Physics, Instrumentation et méthodes en physique, Muon, 010308 nuclear & particles physics, Detector, Instrumentation and Detectors (physics.ins-det), nuclear emulsions, Monte Carlo models, Charged particle, 3. Good health, Neutrino
Abstract

A new method of momentum measurement of charged particles through multiple Coulomb scattering (MCS) in the OPERA lead-emulsion target is presented. It is based on precise measurements of track angular deviations carried out thanks to the very high resolution of nuclear emulsions. The algorithm has been tested with Monte Carlo pions. The results are found to describe within the expected uncertainties the data obtained from test beams. We also present a comparison of muon momenta evaluated through MCS in the OPERA lead-emulsion target with those determined by the electronic detectors for neutrino-charged current interaction events. The two independent measurements agree within the experimental uncertainties, and the results validate the algorithm developed for the emulsion detector of OPERA. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft., 0, arXiv:1106.6211v1 [physics.ins-det], SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2012
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