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14 results on '"W., Lippich"'

1. Search for heavy isosinglet neutrinos

Author

Baki Akkuş, S. Ricciardi, P. Stähelin, J. Panman, V. Zacek, T. Layda, Alexandre Rozanov, L. Gerland, G. Grégoire, U. Dore, A. Nathaniel, P. F. Loverre, T. Voss, F. W. Büsser, W. Lippich, A. Frenkel-Rambaldi, Ramazan Sever, H. Øverås, G. Rädel, V. Palladino, F. Marchetti-Stasi, R. Santacesaria, C. Foos, T. Mouthuy, K. Winter, M. Serin-Zeyrek, J. Vogt, E. Di Capua, R. Beyer, A. Maslennikov, D. De Pedis, K. Hiller, A. Capone, P. Strolin, G. Fiorillo, F. Niebergall, A. G. Cocco, W. Flegel, Pierre Vilain, P. Gorbunov, Denis Favart, G. Zacek, E. Knoops, H. Grote, A. Staude, E.A. Grigoriev, V. Khovansky, Antonio Ereditato, B. Saitta, R. Nahnhauer, E. Arik, Vincent Lemaitre, G. Piredda, S. Petrak, D. Macina, Gaston Wilquet, P. Tolun, H. E. Roloff, P., Vilain, G., Wilquet, S., Petrak, R., Beyer, W., Flegel, H., Grote, T., Mouthuy, H., Overa, J., Panman, K., Winter, G., Zacek, V., Zacek, F. W., Busser, C., Foo, L., Gerland, T., Layda, F., Niebergall, G., Radel, P., Stahelin, T., Vo, D., Favart, G., Gregoire, E., Knoop, V., Lemaitre, P., Gorbunov, E., Grigoriev, V., Khovansky, A., Maslennikov, A., Rozanov, W., Lippich, A., Nathaniel, A., Staude, J., Vogt, A. G., Cocco, A., Ereditato, Fiorillo, Giuliana, F., Marchettistasi, Palladino, Vittorio, P., Strolin, A., Capone, D., Depedi, U., Dore, A., Frenkelrambaldi, P. F., Loverre, D., Macina, G., Piredda, R., Santacesaria, E., Dicapua, S., Ricciardi, B., Saitta, B., Akku, E., Arik, M., Serinzeyrek, R., Sever, P., Tolun, K., Hiller, R., Nahnhauer, H. E., Roloff, Vilain, P., Wilquet, G., Petrak, S., Beyer, R., Flegel, W., Grote, H., Mouthuy, T., Øveras, H., Panman, J., Winter, K., Zacek, G., Zacek, V., Büsser, F. W., Foos, C., Gerland, L., Layda, T., Niebergall, F., Rädel, G., Stähelin, P., Voss, T., Favart, D., Grégoire, G., Knoops, E., Lemaître, V., Gorbunov, P., Grigoriev, E., Khovansky, V., Maslennikov, A., Rozanov, A., Lippich, W., Nathaniel, A., Staude, A., Vogt, J, Cocco, ALFREDO GIUSEPPE, Ereditato, A, Marchetti Stasi, F, Strolin, P, Capone, A, De Pedis, D, Dore, U, Frenkel Rambaldi, A, Loverre P., F, Macina, D, Piredda, G, Santacesaria, R, Di Capua, E, Ricciardi, S, Saitta, B, Akkus, B, Arik, E, Serin Zeyrek, M, Sever, R, Tolun, P, Hiller, K, Nahnhauer, R, and Roloff, H. E.

Subjects
Physics, Particle physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, Solar neutrino problem, Cosmic neutrino background, Nuclear physics, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino astronomy, Neutrino, Nuclear Experiment, Neutrino oscillation, Particle Physics - Experiment
Abstract

A new search for decays of heavy isosinglet neutrinos produced by neutral-current neutrino interactions in the CERN wide-band neutrino beam has been conducted by the CHARM-II Collaboration. We searched for heavy neutrinos created by scattering muon neutrinos on nucleons and decaying into μ + μ − ν μ . Production and decay of heavy neutrinos would appear as double events in the detector. Each double event candidate was tested wheather the measured quantities are compatible with the kinematics of this process. No event passed this test. The analysis is based on 2 × 10 7 neutral-current neutrino events collected from 1987–1991. The experiment is sensitive to heavy neutrinos in the mass range 0.3–2.4 GeV/ c 2 . The best limit for the mixing parameter is | U μi | 2 −5 for a mass around 2 GeV/ c 2 . The analysis improve order of magnitude previous results derived from wide-band neutrino beam exposures of the CHARM detector.

Published
1995
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2. Constraints on additional Z bosons derived from neutrino-electron scattering measurements

Author

J. Vogt, A. G. Cocco, D. De Pedis, P. Strolin, P. Gorbunov, Antonio Ereditato, H. E. Roloff, R. Beyer, Denis Favart, Ramazan Sever, T. Mouthuy, W. Flegel, R. Nahnhauer, H. Grote, Alexandre Rozanov, G. Rädel, G. Fiorillo, A. Staude, C. Foos, G. Zacek, E.A. Grigoriev, V. Khovansky, H. Øverås, D. Macina, E. Knoops, Vincent Lemaitre, K. Hiller, Gaston Wilquet, P. Tolun, Pierre Vilain, E. Di Capua, U. Dore, G. Piredda, B. Saitta, A. Capone, J. Panman, L. Gerland, A. Maslennikov, Baki Akkuş, T. Layda, A. Nathaniel, T. Voss, W. Lippich, A. Frenkel-Rambaldi, K. Winter, V. Palladino, R. Santacesaria, F. Marchetti-Stasi, E. Arik, G. Grégoire, P. F. Loverre, F. W. Büsser, S. Ricciardi, P. Stähelin, V. Zacek, M. Serin-Zeyrek, F. Niebergall, P., Vilain, G., Wilquet, R., Beyer, W., Flegel, H., Grote, T., Mouthuy, H., Overa, J., Panman, A., Rozanov, K., Winter, G., Zacek, V., Zacek, F. W., Busser, C., Foo, L., Gerland, T., Layda, F., Niebergall, G., Radel, P., Stahelin, T., Vo, D., Favart, G., Gregoire, E., Knoop, V., Lemaitre, P., Gorbunov, E., Grigoriev, V., Khovansky, A., Maslennikov, W., Lippich, A., Nathaniel, A., Staude, J., Vogt, A. G., Cocco, A., Ereditato, Fiorillo, Giuliana, F., Marchettistasi, Palladino, Vittorio, P., Strolin, A., Capone, D., Depedi, U., Dore, A., Frenkelrambaldi, P. F., Loverre, D., Macina, G., Piredda, R., Santacesaria, E., Dicapua, S., Ricciardi, B., Saitta, B., Akku, E., Arik, M., Serinzeyrek, R., Sever, P., Tolun, K., Hiller, R., Nahnhauer, and H. E., Roloff

Subjects
GAUGE BOSONS, Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Physics::Instrumentation and Detectors, Scattering, High Energy Physics::Phenomenology, Elementary particle, Supersymmetry, Nuclear physics, LIMITS, ELASTIC-SCATTERING, SEARCH, High Energy Physics::Experiment, VECTOR-BOSON, Charm (quantum number), Neutrino, MASSES, DETECTOR, Electron scattering, Particle Physics - Experiment, Boson
Abstract

We report new constraints on the existence of additional Z bosons derived from neutrino-electron scattering data. The analysis is based on data taken by the CHARM II Collaboration during five years of exposure of the detector to the wide band neutrino beam at CERN. The limits on the mass of these new particles are evaluated in the framework of E 6 superstring-inspired theories and Left-Right symmetric models. Limits on the so-called Z 1 are also reported.

Published
1994
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3. Flavour universality of neutrino couplings with the z

Author

M. Serin-Zeyrek, T. Voss, F. Niebergall, A. Frenkel-Rambaldi, A. G. Cocco, Alexandre Rozanov, G. Fiorillo, Denis Favart, G. Grégoire, P. F. Loverre, Pierre Vilain, R. Beyer, R. Nahnhauer, F. W. Büsser, E. Arik, T. Layda, Baki Akkuş, E.A. Grigoriev, S. Ricciardi, P. Stähelin, V. Zacek, V. Khovansky, V. Palladino, J. Vogt, G. Zacek, U. Dore, A. Capone, A. Maslennikov, P. Gorbunov, C. Foos, A. Nathaniel, A. Staude, E. Knoops, Ramazan Sever, W. Lippich, K. Winter, E. Di Capua, G. Rädel, F. Marchetti-Stasi, D. De Pedis, H. Øverås, P. Strolin, Vincent Lemaitre, B. Saitta, J. Panman, Antonio Ereditato, K. Hiller, T. Mouthuy, W. Flegel, H. Grote, G. Piredda, R. Santacesaria, L. Gerland, D. Macina, Gaston Wilquet, P. Tolun, H. E. Roloff, P., Vilain, G., Wilquet, R., Beyer, W., Flegel, H., Grote, T., Mouthuy, H., Overa, J., Panman, A., Rozanov, K., Winter, G., Zacek, F. W., Busser, V., Zacek, C., Foo, L., Gerland, T., Layda, F., Niebergall, G., Radel, P., Stahelin, T., Vo, D., Favart, G., Gregoire, E., Knoop, V., Lemaitre, P., Gorbunov, E., Grigoriev, V., Khovansky, A., Maslennikov, W., Lippich, A., Nathaniel, A., Staude, J., Vogt, A. G., Cocco, A., Ereditato, Fiorillo, Giuliana, F., Marchettistasi, Palladino, Vittorio, P., Strolin, A., Capone, D., Depedi, U., Dore, A., Frenkelrambaldi, P. F., Loverre, D., Macina, G., Piredda, R., Santacesaria, E., Dicapua, S., Ricciardi, B., Saitta, B., Akku, E., Arik, M., Serinzeyrek, R., Sever, P., Tolun, K., Hiller, R., Nahnhauer, and H. E., Roloff

Subjects
Coupling, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, Flavour, Elementary particle, Universality (dynamical systems), Nuclear physics, High Energy Physics::Experiment, Muon neutrino, ELECTRON, Neutrino, Neutrino oscillation, Particle Physics - Experiment
Abstract

We are reporting the first experimental result of the coupling of the muon neutrino with the Z. This result is in good agreement with the average value of the coupling of the three neutrino families as derived from the invisible decay width of the Z. We also determined gντ assuming Nν=3.

Published
1994
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4. Experimental search for muonic photons

Author

A. Nathaniel, W. Lippich, R. Santacesaria, E.A. Grigoriev, T. Voss, S. Ricciardi, Pierre Vilain, H. E. Roloff, M. Serin-Zeyrek, P. Stähelin, W. Flegel, V. Zacek, J. Vogt, G. Grégoire, F. W. Büsser, V. A. Ilyin, F. Niebergall, D. De Pedis, Antonio Capone, Denis Favart, G. Zacek, P. Gorbunov, A. Staude, D. Macina, Gaston Wilquet, P. Tolun, Ramazan Sever, G. Piredda, G. Rädel, T. Layda, H. Øverås, Vincent Lemaitre, K. Hiller, C. Foos, E. Arik, V. Palladino, K. Winter, Lev B Okun, R. Beyer, P. F. Loverre, Antonio Ereditato, T. Mouthuy, J. Panman, B. Saitta, R. Nahnhauer, Alfredo G. Cocco, E. Knoops, A. Maslennikov, U. Dore, V. Khovansky, F. Marchetti-Stasi, E. Di Capua, P. Strolin, A. Frenkel-Rambaldi, Alexandre Rozanov, G. Fiorillo, L. Gerland, Baki Akkuş, B., Akku, E., Arik, R., Beyer, F. W., Busser, A., Capone, A. G., Cocco, D. D., Pedi, E. D., Capua, U., Dore, A., Ereditato, D., Favart, Fiorillo, Giuliana, W., Flegel, C., Foo, A., Frenkel Rambaldi, L., Gerland, P., Gorbunov, G., Gregoire, E., Grigoriev, K., Hiller, V., Ilyin, V., Khovansky, E., Knoop, T., Layda, V., Lemaitre, W., Lippich, P. F., Loverre, D., Macina, F., Marchetti Stasi, A., Maslennikov, T., Mouthuy, R., Nahnhauer, A., Nathaniel, F., Niebergall, L., Okun, H., Overa, Palladino, Vittorio, J., Panman, G., Piredda, G., Radel, S., Ricciardi, H., Roloff, A., Rozanov, B., Saitta, R., Santacesaria, M., Serin Zeyrek, R., Sever, P., Stahelin, A., Staude, P., Strolin, P., Tolun, P., Vilain, J., Vogt, T., Vo, G., Wilquet, K., Winter, G., Zacek, and V., Zacek

Subjects
Physics, Coupling constant, Nuclear and High Energy Physics, Particle physics, Photon, Large Hadron Collider, Muon, Anomalous magnetic dipole moment, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Nuclear physics, Muon neutrino, High Energy Physics::Experiment, Charm (quantum number), Neutrino, DETECTOR, Particle Physics - Experiment
Abstract

We report new limits on the production of muonic photons in the CERN neutrino beam. The results are based on the analysis of neutrino production of dimuons in the CHARM II detector. A 90% CL limit on the coupling constant of muonic photons, alpha(mu)/alpha(

Published
1998

5. Experimental study of electromagnetic properties of the muon neutrino in neutrino-electron scattering

Author

S. Ricciardi, P. Stähelin, V. Zacek, R. Beyer, V. Khovansky, C. Foos, D. De Pedis, A. Maslennikov, Baki Akkuş, A. Frenkel-Rambaldi, Alexandre Rozanov, R. Santacesaria, E.A. Grigoriev, H. Øverås, W. Flegel, A. Staude, G. Rädel, E. Arik, K. Hiller, M. Serin-Zeyrek, P. Strolin, Pierre Vilain, H. E. Roloff, L. Gerland, Antonio Ereditato, G. Grégoire, F. W. Büsser, J. Vogt, F. Niebergall, E. Knoops, G. Fiorillo, G. Zacek, Antonio Capone, Denis Favart, F. Marchetti-Stasi, P. Gorbunov, D. Macina, B. Saitta, U. Dore, Vincent Lemaitre, Ramazan Sever, J. Panman, Gaston Wilquet, P. Tolun, V. Palladino, A. Nathaniel, T. Mouthuy, W. Lippich, R. Nahnhauer, Alfredo G. Cocco, E. Di Capua, T. Layda, G. Piredda, K. Winter, P. F. Loverre, T. Voss, P., Vilain, G., Wilquet, R., Beyer, W., Flegel, T., Mouthuy, H., Overa, J., Panman, K., Winter, G., Zacek, V., Zacek, F. W., Busser, C., Foo, L., Gerland, T., Layda, F., Niebergall, G., Radel, P., Stahelin, T., Vo, D., Favart, G., Gregoire, E., Knoop, V., Lemaitre, P., Gorbunov, E., Grigoriev, V., Khovansky, A., Maslennikov, A., Rozanov, W., Lippich, A., Nathaniel, A., Staude, J., Vogt, A. G., Cocco, A., Ereditato, Fiorillo, Giuliana, F., Marchettistasi, Palladino, Vittorio, P., Strolin, A., Capone, D., Depedi, U., Dore, A., Frenkelrambaldi, P. F., Loverre, D., Macina, G., Piredda, R., Santacesaria, E., Dicapua, S., Ricciardi, B., Saitta, B., Akku, E., Arik, M., Serinzeyrek, R., Sever, P., Tolun, K., Hiller, R., Nahnhauer, and H. E., Roloff

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Magnetic moment, Physics::Instrumentation and Detectors, Scattering, High Energy Physics::Phenomenology, Electric form factor, Nuclear physics, Charge radius, High Energy Physics::Experiment, Muon neutrino, Charm (quantum number), Neutrino, Electron scattering, Particle Physics - Experiment
Abstract

We report new bounds on electromagnetic properties of the muon neutrino obtained from a study of neutrino-electron scattering. The results are based on the analysis of differential cross section data collected with the CHARM II detector. The 90% C.L. limit on the magnetic moment of the muon-neutrino mu(nu mu) < 3 . 10(-9) mu(B) confirms limits obtained at much lower energies. The limit on the anomalous charge radius of the muon neutrino \[r(2)]anom\ < 6.0 . 10(-33) cm(2) improves earlier results by nearly a factor three.

Published
1994

6. Search For Muon To Electron Neutrino Oscillations

Author

J. Vogt, W. Flegel, T. Mouthuy, P. Gorbunov, F. Marchetti-Stasi, A. Staude, Ramazan Sever, C. Foos, Antonio Capone, Alfredo G. Cocco, Pierre Vilain, E. Knoops, U. Dore, R. Nahnhauer, A. Frenkel-Rambaldi, Alexandre Rozanov, G. Piredda, D. De Pedis, Gaston Wilquet, B. Saitta, T. Voss, G. Rädel, G. Grégoire, P. F. Loverre, Denis Favart, P. Tolun, G. Fiorillo, H. Øverås, F. W. Büsser, Baki Akkuş, Antonio Ereditato, A. Nathaniel, D. Macina, P. Strolin, E. Di Capua, R. Santacesaria, Vincent Lemaitre, E.A. Grigoriev, W. Lippich, H. E. Roloff, K. Hiller, K. Winter, M. Serin-Zeyrek, V. Palladino, A. Maslennikov, E. Arik, R. Beyer, F. Niebergall, V. Khovansky, L. Gerland, T. Layda, J. Panman, S. Ricciardi, P. Stähelin, V. Zacek, Mehmet Zeyrek, G. Zacek, P., Vilain, G., Wilquet, R., Beyer, W., Flegel, T., Mouthuy, H., Overa, J., Panman, A., Rozanov, K., Winter, G., Zacek, V., Zacek, F. W., Busser, C., Foo, L., Gerland, T., Layda, F., Niebergall, G., Radel, P., Stahelin, T., Vo, D., Favart, G., Gregoire, E., Knoop, V., Lemaitre, P., Gorbunov, E., Grigoriev, V., Khovansky, A., Maslennikov, W., Lippich, A., Nathaniel, A., Staude, J., Vogt, A. G., Cocco, A., Ereditato, Fiorillo, Giuliana, F., Marchettistasi, Palladino, Vittorio, P., Strolin, A., Capone, D., Depedi, U., Dore, A., Frenkelrambaldi, P. F., Loverre, D., Macina, G., Piredda, R., Santacesaria, E., Dicapua, S., Ricciardi, B., Saitta, B., Akku, E., Arik, M., Serinzeyrek, R., Sever, P., Tolun, M. T., Zeyrek, K., Hiller, R., Nahnhauer, and H. E., Roloff

Subjects
Physics, Particle physics, Muon, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Flux, Nuclear physics, SCATTERING, High Energy Physics::Experiment, Charm (quantum number), Neutrino, Neutrino oscillation, Engineering (miscellaneous), Electron neutrino, DETECTOR, Particle Physics - Experiment, Charged current, Bar (unit)
Abstract

A search for upsilon(mu) --> upsilon(e) and ($) over bar upsilon(mu) --> ($) over bar upsilon(e) oscillations has been carried out with the CHARM LI detector exposed to the CERN wide band neutrino beam. The data were collected over five years, alternating beams mainly composed of muon-neutrinos and muon-antineutrinos. The number of interactions of upsilon(e) and ($) over bar upsilon(e) observed is comparable with the number of events expected from flux calculations. For large squared mass differences the upper limits obtained on the mixing angle are sin(2)2 theta < 9.4.10(-3) for upsilon(mu) oscillating to upsilon(e) and sin(2)2 theta < 4.8.10(-3) for ($) over bar upsilon(mu) to ($) over bar upsilon(e) at the 90% confidence level. Combining neutrino and antineutrino data the upper limit is 5.6.10(-3).

Published
1994

7. New Results On Inverse Muon Decay and Low Multiplicity Reactions

Author

D. Macina, D. De Pedis, P. Strolin, A. Maslennikov, Gaston Wilquet, R. Nahnhauer, P. Tolun, Vincent Lemaitre, G. Piredda, B. Eckart, H. E. Roloff, T. Voss, U. Dore, A. Staude, Pierre Vilain, A. Frenkel-Rambaldi, G. Fiorillo, Alexandre Rozanov, L. Gerland, W. Flegel, Baki Akkuş, H. Grote, R. Beyer, V. Khovansky, J. Panman, S. Ricciardi, E.A. Grigoriev, K. Winter, H. Øverrås, V. Palladino, E. Knoops, A. Capone, E. Di Capua, C. Foos, R. Santacesaria, G. Grégoire, P. F. Loverre, F. W. Büsser, G. Zacek, M. Caria, K. Hiller, A. Nathaniel, W. Lippich, Antonio Ereditato, P. Stähelin, V. Zacek, B. Saitta, Ramazan Sever, T. Mouthuy, A. G. Cocco, Denis Favart, M. Serin-Zeyrek, F. Niebergall, J. Vogt, T. Layda, P. Gorbunov, G. Rädel, E. Arik, B., Akku, E., Arik, R., Beyer, F. W., Busser, A., Capone, M., Caria, A. G., Cocco, D., Depedi, E., Dicapua, U., Dore, B., Eckart, A., Ereditato, D., Favart, Fiorillo, Giuliana, W., Flegel, C., Foo, A., Frenkelrambaldi, L., Gerland, P., Gorbunov, G., Gregoire, E., Grigoriev, H., Grote, K., Hiller, V., Khovansky, E., Knoop, T., Layda, V., Lemaitre, W., Lippich, P. F., Loverre, D., Macina, A., Maslennikov, T., Mouthuy, R., Nahnhauer, A., Nathaniel, F., Niebergall, H., Overa, Palladino, Vittorio, J., Panman, G., Piredda, G., Radel, S., Ricciardi, H. E., Roloff, A., Rozanov, B., Saitta, R., Santacesaria, M., Serinzeyrek, R., Sever, P., Stahelin, A., Staude, P., Strolin, P., Tolun, P., Vilain, J., Vogt, T., Vo, G., Wilquet, K., Winter, G., Zacek, and V., Zacek

Subjects
Elastic scattering, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Electroweak interaction, Atomic and Molecular Physics, and Optics, Nuclear physics, Pion, NEUTRINO-ELECTRON SCATTERING, Neutrino detector, High Energy Physics::Experiment, Neutrino, Electron scattering, Charged current
Abstract

New results on inverse muon decay and coherent charged pion production by neutrinos are presented. The data come from the CHARM-II neutrino detector operated at the CERN wide-band neutrino beam. High-statistics data samples of 14500 inverse muon decay events and 3500 νμe elastic scattering events allow the determination of the electroweak parameters from the ratio of the cross-sections of neutral-to-charged-current neutrino electron scattering. The best fit values of the electroweak mixing angle sin 2 Ω w and the relative coupling strength ϱ of neutral and charged current are: sin 2 Ω w = 0.237 ± 0.014 and ϱ = 0.987 ± 0.042 . In the second topic, coherent single charged pion production was measured in neutrino and antineutrino beams. The measured cross-sections, averaged over the wide-band beam spectra and the glass target nuclei composition, are: σ(νμA → μ−π+A) = (51 ± 10) × 10−40 cm2 nucleus and σ( ν μ A → μ + π − A) = (43 ± 9) × 10 −40 cm 2 nucleus. The energy dependence shows the expected flattering of the cross-sections at high energy.

Published
1993

8. Neutral Current Coupling-constants From Neutrino-electron Scattering

Author

Ramazan Sever, Baki Akkuş, A. Maslennikov, T. Mouthuy, A. Staude, E. Knoops, G. Zacek, T. Layda, L. Gerland, P. Strolin, D. De Pedis, R. Nahnhauer, Alfredo G. Cocco, S. Ricciardi, G. Rädel, K. Winter, J. Panman, G. Grégoire, P. F. Loverre, M. Caria, F. W. Büsser, Denis Favart, Antonio Capone, P. Stähelin, E. Arik, V. Zacek, V. Palladino, D. Macina, J. Vogt, E.A. Grigoriev, Gaston Wilquet, V. Khovansky, H. Øverås, P. Gorbunov, H. Grote, K. Hiller, G. Piredda, B. Eckart, Antonio Ereditato, C. Foos, E. Di Capua, U. Dore, Vincent Lemaitre, Pierre Vilain, M. Serin-Zeyrek, T. Voss, G. Fiorillo, B. Saitta, F. Niebergall, W. Flegel, A. Nathaniel, W. Lippich, A. Frenkel-Rambaldi, Alexandre Rozanov, R. Beyer, R. Santacesaria, P. Tolun, H. E. Roloff, B., Akku, E., Arik, R., Beyer, F. W., Busser, A., Capone, M., Caria, A. G., Cocco, D., Depedi, E., Dicapua, U., Dore, B., Eckart, A., Ereditato, D., Favart, Fiorillo, Giuliana, W., Flegel, C., Foo, A., Frenkelrambaldi, L., Gerland, P., Gorbunov, G., Gregoire, E., Grigoriev, H., Grote, K., Hiller, V., Khovansky, E., Knoop, T., Layda, V., Lemaitre, W., Lippich, P. F., Loverre, D., Macina, A., Maslennikov, T., Mouthuy, R., Nahnhauer, A., Nathaniel, F., Niebergall, H., Overa, Palladino, Vittorio, J., Panman, G., Piredda, G., Radel, S., Ricciardi, H. E., Roloff, A., Rozanov, B., Saitta, R., Santacesaria, M., Serinzeyrek, R., Sever, P., Stahelin, A., Staude, P., Strolin, P., Tolun, P., Vilain, J., Vogt, T., Vo, G., Wilquet, K., Winter, G., Zacek, and V., Zacek

Subjects
Physics, Coupling constant, Nuclear and High Energy Physics, Large Hadron Collider, Neutral current, Physics::Instrumentation and Detectors, Scattering, Detector, Weinberg angle, Atomic and Molecular Physics, and Optics, Nuclear physics, ELASTIC-SCATTERING, High Energy Physics::Experiment, Atomic physics, Neutrino, Electron scattering
Abstract

We are reporting on a determination of neutral current coupling constants from a study of differential cross sections of muon-(anti)neutrino electron scattering. The results were obtained with the CHARM-II detector which was exposed to the CERN wide band neutrino beam in the years 1987 to 1991. A total of about 3000 ve and 3000 v e scattering events were observed. We present a preliminary value of sin2φw determined with the ratio of neutrino and antineutrino electron scattering cross-sections, based on the full data sample, and we give a determination of the effective vector and axial-vector neutral current coupling constants and the first measurement of the shape of the y-distributions based on 80% of the total statistics.

Published
1993

9. Coherent single charged pion production by neutrinos

Author

T. Voss, A. Staude, R. Beyer, R. Santacesaria, E.A. Grigoriev, D. De Pedis, J. Panman, E. Arik, T. Mouthuy, K. Winter, B. Saitta, A. Maslennikov, Pierre Vilain, R. Nahnhauer, L. Gerland, S. Ricciardi, F. Marchetti-Stasi, G. Rädel, P. Stähelin, C. Foos, A. G. Cocco, G. Fiorillo, Antonio Capone, G. Piredda, Denis Favart, V. Palladino, V. Zacek, D. Macina, M. Serin-Zeyrek, J. Vogt, E. Knoops, P. Strolin, A. Frenkel-Rambaldi, Baki Akkuş, Alexandre Rozanov, A. Nathaniel, G. Grégoire, P. F. Loverre, P. Gorbunov, F. W. Büsser, F. Niebergall, W. Lippich, V. Khovansky, E. Di Capua, T. Layda, U. Dore, H. Øverås, K. Hiller, G. Zacek, Vincent Lemaitre, W. Flegel, H. Grote, H. E. Roloff, Gaston Wilquet, P. Tolun, Ramazan Sever, Antonio Ereditato, P., Vilain, G., Wilquet, R., Beyer, W., Flegel, H., Grote, T., Mouthuy, H., Overa, J., Panman, A., Rozanov, K., Winter, G., Zacek, V., Zacek, F. W., Busser, C., Foo, L., Gerland, T., Layda, F., Niebergall, G., Radel, P., Stahelin, T., Vo, D., Favart, G., Gregoire, E., Knoop, V., Lemaitre, P., Gorbunov, E., Grigoriev, V., Khovansky, A., Maslennikov, W., Lippich, A., Nathaniel, A., Staude, J., Vogt, A. G., Cocco, A., Ereditato, Fiorillo, Giuliana, F., Marchettistasi, Palladino, Vittorio, P., Strolin, A., Capone, D., Depedi, U., Dore, A., Frenkelrambaldi, P. F., Loverre, D., Macina, G., Piredda, R., Santacesaria, E., Dicapua, S., Ricciardi, B., Saitta, B., Akku, E., Arik, M., Serinzeyrek, R., Sever, P., Tolun, K., Hiller, R., Nahnhauer, and H. E., Roloff

Subjects
PI-0 PRODUCTION, Physics, Nuclear and High Energy Physics, Particle physics, ELECTRON SCATTERING, NUCLEI, Physics::Instrumentation and Detectors, Scattering, High Energy Physics::Phenomenology, Detector, MESONS, PI+, lcsh:QC1-999, Charged particle, Nuclear physics, Pion, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, Phenomenology (particle physics), lcsh:Physics, Particle Physics - Experiment
Abstract

We report on a measurement of coherent single charged pion production in neutrino-nucleus scattering. The analysis is based on data taken with the CHARM II detector in beams of muon-neutrinos and -antineutrinos. The event numbers amount to N(μ−π) = 748 and N(μ+π) = 631. Cross sections and their dependence on the neutrino energy are determined. The results are in agreement with the predictions of models based on the PCAC hypothesis.

Published
1993

10. NEUTRAL CURRENT COUPLING-CONSTANTS FROM NEUTRINO-ELECTRON AND ANTINEUTRINO-ELECTRON SCATTERING

Author

G. Fiorillo, K. Winter, W. Flegel, G. Piredda, B. Eckart, D. Macina, G. Rädel, A. Staude, A. Nathaniel, R. Beyer, G. Zacek, J. Vogt, J. Panman, H. Grote, A. Maslennikov, E.A. Grigoriev, G. Wilguet, W. Lippich, P. Gorbunov, Antonio Ereditato, V.D. Khovansky, E. Knoops, Pierre Vilain, T. Layda, A. G. Cocco, Vincent Lemaitre, Denis Favart, F. Niebergall, U. Dore, H. Øverås, T. Mouthuy, V. Palladino, M. Caria, G. Grégoire, P. F. Loverre, F. W. Büsser, R. Santacesaria, P. Stähelin, V. Zacek, E. Di Capua, C. Foos, L. Gerland, A. Capone, D. De Pedis, P. Strolin, Alexandre Rozanov, T. Voss, A. Frenkel-Rambaldi, P., Vilain, G., Wilquet, W., Flegel, H., Grote, T., Mouthuy, H., Overa, J., Panman, A., Rozanov, K., Winter, G., Zacek, V., Zacek, R., Beyer, F. W., Busser, C., Foo, L., Gerland, T., Layda, F., Niebergall, G., Radel, P., Stahelin, T., Vo, D., Favart, G., Gregoire, E., Knoop, V., Lemaitre, P., Gorbunov, E., Grigoriev, V., Khovansky, A., Maslennikov, W., Lippich, A., Nathaniel, A., Staude, J., Vogt, M., Caria, A. G., Cocco, B., Eckart, A., Ereditato, Fiorillo, Giuliana, Palladino, Vittorio, P., Strolin, A., Capone, D., Depedi, E., Dicapua, U., Dore, A., Frenkelrambaldi, P. F., Loverre, D., Macina, G., Piredda, and R., Santacesaria

Subjects
Coupling constant, Physics, Nuclear and High Energy Physics, Muon, Neutral current, Physics::Instrumentation and Detectors, Scattering, Weinberg angle, Electron, Nuclear physics, ELASTIC-SCATTERING, High Energy Physics::Experiment, Neutrino, Atomic physics, Electron scattering, Particle Physics - Experiment
Abstract

We are reporting on a determination of neutral current coupling constants from a study of differential cross sections of muon- (anti)neutrino-electron scattering. The results were obtained with the CHARM-II detector which was exposed to the CERN wide band neutrino beam in the years 1987–1990. A total of about 2100 ve and 2200 ve scattering events were observed. From a comparison between the data and predicted event distributions, the effective vector and axial-vector neutral current coupling constants of the electron were determined to be g e v =−0.025±0.019 and g e A =−0.503±0.018.

Published
1992

11. ELECTROWEAK PARAMETERS FROM NEUTRINO-ELECTRON SCATTERING

Author

A. Maslennikov, H. Øverås, H. Grote, P. F. Loverre, K. Winter, Antonio Capone, R. Santacesaria, G. Rädel, E.A. Grigoriev, M. Caria, R. Beyer, Alfredo G. Cocco, E. Knoops, Francesco Marchetti-Stasi, J. Vogt, Vincent Lemaitre, T. Voss, V. Palladino, Gaston Wilquet, E. DiCapua, A. Staude, P. Gorbunov, A. Frenkel-Rambaldi, P. Stähelin, T. Mouthuy, V. Zacek, B. Eckart, Denis Favart, C. Foos, U. Dore, J. Panman, G. Fiorillo, V.D. Khovansky, P. Strolin, D. Depedis, W. Flegel, T. Layda, F. Niebergall, Alexandre Rozanov, Pierre Vilain, Antonio Ereditato, A. Nathaniel, G. Piredda, W. Lippich, G. Zacek, G. Grégoire, F. W. Büsser, L. Gerland, and D. Macina

Subjects
Physics, Particle physics, Electroweak interaction, Technicolor, Neutrino, Electron scattering
Published
1993
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12. An improved determination of the electroweak mixing angle from muon-neutrino electron scattering

Author

E. Gorini, F. Niebergall, A. Maslennikov, Alexandre Rozanov, E. Di Capua, C. Foos, G. Grégoire, P. F. Loverre, W. Flegel, F. W. Büsser, U. Dore, V. Khovansky, Pierre Vilain, H. Grote, D. Geiregat, H. Øverås, T. Mouthuy, K. Winter, G. Zacek, Antonio Ereditato, Gaston Wilquet, R. Beyer, P. Gorbunov, G. Piredda, B. Eckart, L. Gerland, V. Palladino, R. Iasevoli, F. Grancagnolo, U. Binder, E. Knoops, P. Stähelin, A. Tadsen, H. Burkard, V. Zacek, Denis Favart, A. Nathaniel, M. Caria, W. Lippich, D. Zanello, E. Grigoriev, G. Rädel, J. Panman, T. Layda, T. Voss, A. Frenkel-Rambaldi, A. Staude, Th. Delbar, A. Capone, R. Santacesaria, D. De Pedis, and P. Strolin

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Scattering, Electroweak interaction, Radiative transfer, Weinberg angle, Muon neutrino, Charm (quantum number), Neutrino, Electron scattering, Particle Physics - Experiment
Abstract

We are reporting an improved determination of the electroweak mixing angle sin2Θw from the ratio of νμe to ν μ e scattering cross sections. The CHARM II detector was exposed to neutrino and antineutrino wide band beams at the 450 GeV CERN SPS. Including new data collected in 1989 we have obtained 1316 ± 56 νμe and 1453 ± 62 ν μ e events. From the ratio of the visible cross sections we determined sin2Θ0=0.239 ± 0.009(stat) ± 0.007(syst) without radiative corrections and g V e g A e =0.047 ± 0.046 . Combining this last result with recent results on gAe at LEP we obtain gVe= −0.023 ± 0.023.

Published
1991

13. Experimental results obtained from a low-Z, fine-grained electromagnetic calorimeter

Author

A. Rosanov, F. Grancagnolo, E. Knoops, R. Santacesaria, E.A. Grigoriev, B. Emsens, T. Delbar, T. Mouthuy, A. Capone, E. Di Capua, C. Foos, Pierre Vilain, D. De Pedis, D. Zanello, P. Strolin, R. Beyer, L. Gerland, H. Øverås, G. Zacek, A. Tadsen, P. Stähelin, H. Burkard, V. Zacek, Antonio Ereditato, A. Staude, A. Nathaniel, W. Flegel, W. Lippich, U. Binder, T. Bauche, K. de Winter, E. Gorini, P. Gorbunov, F. Niebergall, V. Palladino, P. F. Loverre, F. W. Büsser, A. Maslennikov, D. Favart, Volker Blobel, V. Khovansky, J. Panman, Gaston Wilquet, G. Grégoire, H. Grote, A. Rambaldi-Frenkel, M. Caria, G. Piredda, U. Dore, D. Geiregat, C. Nieuwenhuis, F. Bergsma, R. Iasevoli, K. Winter, K., Dewinter, D., Geiregat, P., Vilain, G., Wilquet, F., Bergsma, U., Binder, H., Burkard, A., Capone, A., Ereditato, W., Flegel, H., Grote, C., Nieuwenhui, H., Overa, V., Palladino, J., Panman, G., Piredda, K., Winter, G., Zacek, V., Zacek, T., Bauche, R., Beyer, V., Blobel, F. W., Busser, C., Foo, L., Gerland, F., Niebergall, P., Stahelin, A., Tadsen, T., Delbar, B., Emsen, D., Favart, G., Gregoire, E., Knoop, T., Mouthuy, P., Gorbunov, E., Grigoriev, V., Khovansky, A., Maslennikov, A., Rosanov, W., Lippich, A., Nathaniel, A., Staude, M., Caria, Gorini, Edoardo, F., Grancagnolo, R., Iasevoli, P., Strolin, D., Depedi, E., Dicapua, U., Dore, P. F., Loverre, A., Rambaldifrenkel, R., Santacesaria, and D., Zanello

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Calorimeter (particle physics), Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Detector, Electron, Nuclear physics, Pion, Scintillation counter, High Energy Physics::Experiment, Angular resolution, Neutrino, Detectors and Experimental Techniques, Nuclear Experiment, Instrumentation
Abstract

We report on experimental results obtained with the neutrino target calorimeter of the CHARM II detector. The experiment is being performed at CERN and its aim is to measure sin2θw, the electroweak mixing parameter, via the study of neutrino-electron scattering. The detector, installed on the SPS neutrino wide-band beam line, consists of a glass calorimeter instrumented with plastic streamer tubes and scintillation counters, and of a muon spectrometer. The performance of the calorimeter has been explored during a test run with electron and pion beams. Results concerning the detector response, the energy and angular resolution, and the e π separation are presented here.

Published
1988

14. A New Determination of the Electroweak Mixing Angle From Muon-neutrino Electron-scattering

Author

A. Tadsen, R. Santacesaria, A. Nathaniel, W. Lippich, Antonio Ereditato, G. Grégoire, P. F. Loverre, F. W. Büsser, Volker Blobel, W. Flegel, A. Rosanov, H. Grote, P. Stähelin, V. Zacek, T. Layda, F. Grancagnolo, H. Burkard, Pierre Vilain, Gaston Wilquet, D. De Pedis, D. Geiregat, B. Eckart, F. Bergsma, D. Zanello, T. Mouthuy, V. Palladino, V. Khovansky, J. Panman, A. Maslennikov, T. Voss, P. Gorbunov, C. Foos, A. Staude, G. Rädel, Y. Eisenberg, Denis Favart, E. Knoops, R. Iasevoli, G. Zacek, Th. Delbar, E. Gorini, Antonio Capone, E. Di Capua, M. Caria, F. Niebergall, L. Gerland, H. Øverås, U. Dore, E. Grigoriev, R. Beyer, A. Frenkel-Rambaldi, G. Piredda, K. Winter, U. Binder, P. Strolin, D., Geiregat, P., Vilain, G., Wilquet, F., Bergsma, U., Binder, H., Burkard, Y., Eisenberg, W., Flegel, H., Grote, T., Mouthuy, H., Overa, J., Panman, R., Santacesaria, K., Winter, G., Zacek, V., Zacek, R., Beyer, V., Blobel, F. W., Busser, C., Foo, L., Gerland, T., Layda, F., Niebergall, G., Radel, P., Stahelin, A., Tadsen, T., Vo, T., Delbar, D., Favart, G., Gregoire, E., Knoop, P., Gorbunov, E., Grigoriev, V., Khovansky, A., Maslennikov, A., Rosanov, W., Lippich, A., Nathaniel, A., Staude, M., Caria, B., Eckart, A., Ereditato, Gorini, Edoardo, F., Grancagnolo, R., Iasevoli, V., Palladino, P., Strolin, A., Capone, D., Depedi, E., Dicapua, U., Dore, A., Frenkelrambaldi, P. F., Loverre, G., Piredda, and D., Zanello

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle decay, Particle physics, Pion, Muon, Radiative transfer, Weinberg angle, Muon neutrino, Neutrino, Particle Physics - Experiment, Lepton
Abstract

We are reporting on a new determination of sin2ϑw from the ratio of v μ e to v e scattering cross sections. A new detector designed for this purpose was exposed tothe Wide Band Neutrino Beamof the 450 GeV (CERN SPS. An analysis of data taken in 1987 and 1988 is presented based on 762 vμe and 1017 v e events. From the ratio of σ( v μ e ) to σ( v μ e ) we determined sin2ϑw=0.233±0.012 (stat) ± 0.008 (syst) without radiative correction. With radiative correction for mt=mH=100 GeV we find sin2ϑw=0.232±0.012(stat)±0.008(syst).

Published
1989

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