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1. The CHORUS experiment to search for nu(mu)->nu(tau) oscillation

Author

E. Eskut, A. Kayis, G. Onengut, R. vanDantzig, J. Konijn, R. G. C. , C. A. F., J. W. E., J. L. Visschers, A. S. Ayan, E. Pesen, M. SerinZeyrek, R. Sever, P. Tolun, M. T. Zeyrek, N. Armenise, F. Cassol, M. G. Catanesi, M. T. Muciaccia, E. Radicioni, S. Simone, L. Vivolo, D. Eckstein, P. Lendermann, A. MeyerSievers, T. Patzak, K. Winter, P. Righini, B. Saitta, P. Annis, M. Gruwe, C. Mommaert, M. VanderDonckt, B. VandeVyver, P. Vilain, G. Wilquet, E. DiCapua, M. Ferroni, C. Luppi, S. Ricciardi, Y. Ishii, T. Kawamura, M. Kazuno, S. Ogawa, H. Shibuya, R. Beyer, J. Brunner, G. Carnevale, J. P. Fabre, R. Ferreira, W. Flegel, R. Gurin, M. deJong, M. Litmaath, L. Ludovici, D. Macina, R. M. Drees, H. Meinhard, E. Niu, H. Overas, J. Panman, F. Riccardi, A. Rozanov, D. Saltzberg, G. Stefanini, R. Tzenov, C. Weinheimer, H. T. Wong, P. Zucchelli, J. Goldberg, K. Hoepfner, H. Chikawa, E. Arik, I. Birol, A. A. Mailov, C. H. Hahn, H. I. Jang, J. Y. Kim, S. N. Kim, I. G. Park, M. S. Park, J. S. Song, C. S. Yoon, K. Kodama, N. Ushida, S. Aoki, T. Hara, G. Brooijmans, D. Favart, G. Gregoire, J. Herin, V. Lemaitre, A. Artamonov, V. Epstein, P. Gorbunov, V. Khovansky, V. Shamanov, V. Smirnitsky, D. Bonekamper, D. Frekers, D. Rondeshagen, T. Wolff, K. Hoshino, M. Kobayashi, M. Komatzu, Y. Kotaka, T. Kozaki, M. Miyanishi, M. Nakamura, T. Nakano, K. Niu, K. Niwa, Y. Obayashi, O. Sato, T. Toshito, S. Buontempo, L. Casagrande, A. G. Cocco, N. DAmbrosio, A. Ereditato, F. MarchettiStasi, M. Messina, P. Migliozzi, S. Sorrentino, P. Strolin, K. Nakamura, T. Okusawa, T. Yoshida, A. Capone, D. DePedis, S. DiLiberto, U. Dore, P. F. Loverre, A. Maslennikov, M. A. Mazzoni, F. Meddi, G. Piredda, R. Santacesaria, A. D. Bartolomeo, C. Bozza, G. Grella, G. Iovane, G. Romano, G. Rosa, Y. Sato, I. Tezuka, FIORILLO, GIULIANA, GARUFI, FABIO, PALLADINO, VITTORIO, E., Eskut, A., Kayi, G., Onengut, R., Vandantzig, J., Konijn, R. G. C., C. A. F., J. W., E., J. L., Visscher, A. S., Ayan, E., Pesen, M., Serinzeyrek, R., Sever, P., Tolun, M. T., Zeyrek, N., Armenise, F., Cassol, M. G., Catanesi, M. T., Muciaccia, E., Radicioni, S., Simone, L., Vivolo, D., Eckstein, P., Lendermann, A., Meyersiever, T., Patzak, K., Winter, P., Righini, B., Saitta, P., Anni, M., Gruwe, C., Mommaert, M., Vanderdonckt, B., Vandevyver, P., Vilain, G., Wilquet, E., Dicapua, M., Ferroni, C., Luppi, S., Ricciardi, Y., Ishii, T., Kawamura, M., Kazuno, S., Ogawa, H., Shibuya, R., Beyer, J., Brunner, G., Carnevale, J. P., Fabre, R., Ferreira, W., Flegel, R., Gurin, M., Dejong, M., Litmaath, L., Ludovici, D., Macina, R. M., Dree, H., Meinhard, E., Niu, H., Overa, J., Panman, F., Riccardi, A., Rozanov, D., Saltzberg, G., Stefanini, R., Tzenov, C., Weinheimer, H. T., Wong, P., Zucchelli, J., Goldberg, K., Hoepfner, H., Chikawa, E., Arik, I., Birol, A. A., Mailov, C. H., Hahn, H. I., Jang, J. Y., Kim, S. N., Kim, I. G., Park, M. S., Park, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, G., Brooijman, D., Favart, G., Gregoire, J., Herin, V., Lemaitre, A., Artamonov, V., Epstein, P., Gorbunov, V., Khovansky, V., Shamanov, V., Smirnitsky, D., Bonekamper, D., Freker, D., Rondeshagen, T., Wolff, K., Hoshino, M., Kobayashi, M., Komatzu, Y., Kotaka, T., Kozaki, M., Miyanishi, M., Nakamura, T., Nakano, K., Niu, K., Niwa, Y., Obayashi, O., Sato, T., Toshito, S., Buontempo, L., Casagrande, A. G., Cocco, N., Dambrosio, A., Ereditato, Fiorillo, Giuliana, Garufi, Fabio, F., Marchettistasi, M., Messina, P., Migliozzi, Palladino, Vittorio, S., Sorrentino, P., Strolin, K., Nakamura, T., Okusawa, T., Yoshida, A., Capone, D., Depedi, S., Diliberto, U., Dore, P. F., Loverre, A., Maslennikov, M. A., Mazzoni, F., Meddi, G., Piredda, R., Santacesaria, A. D., Bartolomeo, C., Bozza, G., Grella, G., Iovane, G., Romano, G., Rosa, Y., Sato, and I., Tezuka

Subjects
CALIBRATION, ELECTRON-SCATTERING, LIMITS, HYBRID EXPERIMENT, PARTICLES, NEUTRINO-ELECTRON, CALORIMETER, PERFORMANCE, READOUT, DETECTOR
Abstract

A new experimental apparatus, designed principally for a high sensitivity search for nu( --> mu(tau) oscillation, has been successfully constructed and made operational by the CHORUS Collaboration for the CERN-WA95 experiment. It consists of a large emulsion target, a scintillating fiber tracker system with optoelectronics read-out, an air-core magnet, a set of trigger hodoscopes, a calorimeter based on the lead/scintillating-fiber technique, and a muon spectrometer. The design, construction and performance of the entire apparatus and of the different detectors are described.

Published
1997

2. Test results of the streamer-tube system of the CHARM II neutrino detector

Author

J. P. DEWULF, D. GEIREGAT, P. VILAIN, F. BERGSMA, C. BUSI, A. CAPONE, T. DELBAR, D. DEPEDIS, A. EREDITATO, W. FLEGEL, B. FRIEND, W. D. GLESSING, H. GROTE, A. KING, G. LEBEE, C. NIEUWENHUIS, J. PANMAN, A. SEIDEN, K. WINTER, V. ZACEK, T. BAUCHE, F. W. BUSSER, L. GERLAND, F. NIEBERGALL, H. RIEGE, J. SCHUTT, P. STAHELIN, A. TADSEN, J. L. DOUMONT, G. GREGOIRE, T. MOUTHUY, P. GORBUNOV, E. A. GRIGORIEV, V. JEMANOV, V. D. KHOVANSKY, M. KUBANTSEV, A. ROSANOV, D. BRAUN, H. HERBERT, W. LIPPICH, A. STAUDE, M. CARIA, C. GATTO, F. GRANCAGNOLO, R. IASEVOLI, V. PALLADINO, P. PARASCANDOLO, P. STROLIN, G. BASTI, E. DICAPUA, U. DORE, S. GUERRA, P. F. LOVERRE, G. PIREDDA, R. SANTACESARIA, D. ZANELLO, GORINI, Edoardo, J. P., Dewulf, D., Geiregat, P., Vilain, F., Bergsma, C., Busi, A., Capone, T., Delbar, D., Depedi, A., Ereditato, W., Flegel, B., Friend, W. D., Glessing, H., Grote, A., King, G., Lebee, C., Nieuwenhui, J., Panman, A., Seiden, K., Winter, V., Zacek, T., Bauche, F. W., Busser, L., Gerland, F., Niebergall, H., Riege, J., Schutt, P., Stahelin, A., Tadsen, J. L., Doumont, G., Gregoire, T., Mouthuy, P., Gorbunov, E. A., Grigoriev, V., Jemanov, V. D., Khovansky, M., Kubantsev, A., Rosanov, D., Braun, Gorini, Edoardo, H., Herbert, W., Lippich, A., Staude, M., Caria, C., Gatto, F., Grancagnolo, R., Iasevoli, V., Palladino, P., Parascandolo, P., Strolin, G., Basti, E., Dicapua, U., Dore, S., Guerra, P. F., Loverre, G., Piredda, R., Santacesaria, and D., Zanello

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Detector, Particle detector, Anode, Calorimeter, Nuclear physics, Optics, Neutrino detector, High Energy Physics::Experiment, Charm (quantum number), Electronics, Detectors and Experimental Techniques, business, Instrumentation, Electronic circuit
Abstract

The CHARM II Collaboration is building a massive, fine-grained and low-density detector for the study of neutrino-electron scattering. Its target calorimeter consists of 441 detector planes with 155 232 plastic streamer tubes with digital readout of the wires and analog readout of external pickup strips. At the time of this report, about 25% of the calorimeter planes were equipped with electronics. Results on the performance of these tubes are presented as obtained with cosmic-rays and with electron and pion beams. We have also investigated the use of water vapour as an additive to the gas to suppress coating of the anode wires. The use of water would be of particular importance when using the tubes in a high-rate environment.

Published
1986
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3. Status report on CHORUS experiment at CERN

Author

B. Saitta, J. S. Song, M. Serin-Zeyrek, Shigeki Aoki, N. Armenise, A. Ereditato, Kimio Niwa, P. Gorbunov, H. Øverås, W. Flegel, C.A.F.J. van der Poel, J. L. Visschers, Alfredo G. Cocco, E. Eskut, M. de Jong, M. Kazuno, G. Grella, I. Tezuka, P. Zucchelli, J. Konijn, Ramazan Sever, Jürgen Brunner, D. Rondeshagen, V. Khovansky, I. G. Park, Osamu Sato, M. Gruwe, K. Niu, Denis Favart, C. Luppi, D. Macina, R. Meijer Drees, Kazuma Nakazawa, R. Beyer, P. F. Loverre, R. Santacesaria, K. Winter, T. Patzak, V. Shamanov, H. Chikawa, P. Lendermann, G. Grégoire, G. Romano, Antonio Capone, Yoshihiro Sato, Franco Meddi, K. Hoshino, G. Rosa, Gaston Wilquet, P. Tolun, Pierre Vilain, Makoto Kobayashi, D. Bonekämper, M. T. Muciaccia, H. Shibuya, L. Michel, G. Piredda, K.S. Chung, S. Di Liberto, Jean-Paul Fabre, F. Marchetti-Stasi, K. Nakamura, I. T. Lim, M. G. Catanesi, E. Di Capua, R. Ferreira, Vincent Lemaitre, Toshiyuki Nakano, S. Ricciardi, T. Hara, J. Panman, V. Smirnitsky, Y. Nakamura, M. Nakamura, D. De Pedis, Koichi Kodama, E. Arik, Gulsen Onengut, J. Y. Kim, M.A. Mazzoni, Salvatore Buontempo, Henry T. Wong, U. Dore, C. Mommaert, C. H. Hahn, D. Frekers, Alexandre Rozanov, S. Simone, T. Okusawa, P. Strolin, E. Pesen, G. Stefanini, M. Teranaka, A. Mailov, Mehmet Zeyrek, P. Migliozzi, A. Artamonov, G. Fiorillo, V. Palladino, X. Lauwerys, N. Ushida, F. Riccardi, Kerstin Hoepfner, E., Arik, N., Armenise, S., Aoki, A., Artamonov, R., Beyer, J., Brunner, S., Buontempo, M. G., Catanesi, H., Chikawa, K. S., Chung, A., Cocco, A., Capone, M., Dejong, D., Depedi, E., Dicapua, S., Diliberto, U., Dore, A., Ereditato, E., Eskut, J. P., Fabre, D., Favart, R., Ferreira, Fiorillo, Giuliana, W., Flegel, D., Freker, P., Gorbunov, G., Gregoire, G., Grella, M., Gruwe, C. H., Hahn, T., Hara, K., Hoepfner, K., Hoshino, M., Kazuno, J. Y., Kim, M., Kobayashi, K., Kodama, J., Konijn, V., Khovansky, X., Lauwery, V., Lemaitre, P., Lendermann, I. T., Lim, C., Luppi, P. F., Loverre, D., Macina, A. A., Mailov, F., Marchettistasi, M. A., Mazzoni, F., Meddi, R. M., Dree, L., Michel, P., Migliozzi, C., Mommaert, M. T., Muciaccia, K., Nakamura, M., Nakamura, Y., Nakamura, T., Nakano, K., Nakazawa, K., Niu, K., Niwa, T., Okusawa, G., Onengut, H., Overa, Palladino, Vittorio, J., Panman, I. G., Park, T., Patzak, E., Pesen, G., Piredda, F., Riccardi, S., Ricciardi, G., Romano, D., Rondeshagen, G., Rosa, A., Rozanov, B., Saitta, R., Santacesaria, O., Sato, Y., Sato, M., Serinzeyrek, R., Sever, V., Shamanov, H., Shibuya, S., Simone, V., Smirnitsky, J. S., Song, G., Stefanini, P., Strolin, M., Teranaka, I., Tezuka, P., Tolun, N., Ushida, C. A., F., P., Vilain, J. L., Visscher, G., Wilquet, K., Winter, H., Wong, M. T., Zeyrek, P., Zucchelli, and Other Research IHEF (IoP, FNWI)

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, WA95/CHORUS, biology, Physics::Instrumentation and Detectors, Oscillation, Detector, Chorus, WA95/CHORUS, neutrino oscillation, Neutrino beam, Status report, biology.organism_classification, Physics::Accelerator Physics, neutrino oscillation, High Energy Physics::Experiment, Wide band, Instrumentation, Order of magnitude
Abstract

The WA95/CHORUS experiment at CERN is a dedicated nu(mu)-nu(tau) oscillation search experiment. Using the wide band neutrino beam of the CERN-SPS accelerator, with an exposure of 2.4 X 10(19) protons on the target, this experiment will explore the domain of small mixing angles down to sin(2) 2 theta(mu tau) approximate to 3 X 10(-4) for mass differences Delta m(2) > 1 eV(2), more than one order of magnitude better than the current limits. The conceptual design of the CHORUS experiment and data on the detector performances are reported.

Published
1995
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4. 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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5. The high resolution calorimeter of the CHORUS experiment

Author

P. F. Loverre, Franco Meddi, C. Luppi, G. Fiorillo, R. Santacesaria, S. Ricciardi, U. Dore, B. Saitta, D. Depedis, Antonio Ereditato, E. Mazzucato, S. Buontempo, A. Capone, G. Piredda, D. Macina, P. Zucchelli, V. Palladino, P. Strolin, E. Di Capua, M. A. Mazzoni, F. Riccardi, S., Buontempo, A., Capone, D., Depedi, E., Dicapua, U., Dore, A., Ereditato, Fiorillo, Giuliana, P. F., Loverre, C., Luppi, D., Macina, M. A., Mazzoni, E., Mazzucato, F., Meddi, Palladino, Vittorio, G., Piredda, F., Riccardi, S., Ricciardi, B., Saitta, R., Santacesaria, P., Strolin, and P., Zucchelli

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, Physics::Instrumentation and Detectors, Detector, Tracking (particle physics), Atomic and Molecular Physics, and Optics, Particle detector, Calorimeter, Nuclear physics, Measuring instrument, High Energy Physics::Experiment, Neutrino, Neutrino oscillation
Abstract

The CHORUS Collaboration is presently building a new detector for the search of nu(mu)-nu(tau) oscillations on the CERN neutrino beam, this experiment being sensitive to a mixing angle an order of magnitude smaller than previous experiments. The basic components of the CHORUS ''hybrid'' detector are an active target made of nuclear emulsions (for the direct observation of the decay of tau-leptons), an air-core spectrometer with scintillating fiber tracking, a lead-scintillator (fibers and strips) calorimeter (with mu-tracking provided by planes of limited streamer tubes) and a muon spectrometer, consisting of iron toroids and drift chambers. We report here on the design of the calorimeter and on the tests performed on prototype modules.

Published
1993
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6. Construction and Test of Calorimeter Modules For the Chorus Experiment

Author

Alfredo G. Cocco, C. Luppi, D. De Pedis, R. Santacesaria, E. Di Capua, Matteo Ferroni, P. Strolin, P. Migliozzi, V. Palladino, S. Buontempo, Piero Zucchelli, U. Dore, Biagio Saitta, G. Fiorillo, S. Ricciardi, F. Marchetti-Stasi, G. Piredda, F. Riccardi, Antonio Capone, Antonio Ereditato, D. Macina, P. Righini, M.A. Mazzoni, P. F. Loverre, S., Buontempo, A., Capone, A. G., Cocco, D., Depedi, E., Dicapua, U., Dore, A., Ereditato, M., Ferroni, Fiorillo, Giuliana, P. F., Loverre, C., Luppi, D., Macina, F., Marchettistasi, M. A., Mazzoni, P., Migliozzi, Palladino, Vittorio, G., Piredda, F., Riccardi, S., Ricciardi, P., Righini, B., Saitta, R., Santacesaria, P., Strolin, and P., Zucchelli

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Oscillation, STRIPS, Scintillator, law.invention, NO, Nuclear physics, law, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Detectors and Experimental Techniques, Neutrino oscillation, Instrumentation, DETECTOR
Abstract

The construction of modules and the assembly of the calorimeter for CHORUS, an experiment that searches for nu(mu) nu(tau) oscillation, have been completed. Within the experiment, the calorimeter is required to measure the energy of hadronic showers produced in neutrino interactions with a resolution of similar to 30%/root E(GeV). To achieve this performance, the technique, developed in recent years, of embedding scintillating fibers of 1 mm diameter into a lead matrix has been adopted for the most upstream part of the calorimeter. A more conventional system, of alternating layers of lead and scintillator strips, was used for the rest. Details of module construction as well as results obtained when modules were exposed to electron and muon beams are presented.

Published
1994

7. Construction and Test of Modules of the Chorus Calorimeter

Author

U. Dore, A. G. Cocco, B. Saitta, P. Migliozzi, S. Di Liberto, Franco Meddi, C. Luppi, Antonio Ereditato, D. Macina, D. Depedis, G. Fiorillo, V. Palladino, R. Santacesaria, P. Zucchelli, P. F. Loverre, A. Capone, G. Piredda, E. Di Capua, F. Riccardi, S. Ricciardi, M.A. Mazzoni, P. Strolin, S. Buontempo, F. Marchetti-Stasi, S., Buontempo, A., Capone, A. G., Cocco, D., Depedi, E., Dicapua, S., Diliberto, U., Dore, A., Ereditato, Fiorillo, Giuliana, P. F., Loverre, C., Luppi, D., Macina, F., Marchettistasi, M. A., Mazzoni, F., Meddi, P., Migliozzi, Palladino, Vittorio, G., Piredda, F., Riccardi, S., Ricciardi, B., Saitta, R., Santacesaria, P., Strolin, and P., Zucchelli

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, Physics::Instrumentation and Detectors, Detector, Particle detector, Calorimeter, Nuclear physics, Measuring instrument, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Instrumentation, Lepton
Abstract

The CHORUS Collaboration is presently building a new detector for the search of ν μ - ν τ oscillations in the CERN neutrino beam, the experiment being sensitive to a mixing angle an order of magnitude smaller than the present limit. The basic components of the CHORUS “hybrid” detector are an active target made of nuclear emulsions, an air core spectrometer with scintillating fiber tracking, a high resolution calorimeter and a muon spectrometer. An account is given here of the design of the 110-tons compensating calorimeter, made of 1 mm diameter scintillating fibers embedded in a lead matrix, and of the test results from the first modules produced.

Published
1994

8. 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

9. 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

10. 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

11. Calibration and performance of the CHARM-II detector

Author

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

Subjects
Physics, Nuclear and High Energy Physics, NEUTRINO-ELECTRON-SCATTERING, Large Hadron Collider, Muon, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Detector, Electron, Nuclear physics, Pion, Neutrino detector, Physics::Accelerator Physics, High Energy Physics::Experiment, Charm (quantum number), CALORIMETER, Detectors and Experimental Techniques, Nuclear Experiment, Instrumentation
Abstract

The neutrino detector CHARM-II at CERN, consisting of a large target calorimeter equipped with streamer tubes and a muon spectrometer, has been exposed to a test beam of electrons, pions and muons with momenta between 2 and 60 GeV/c in order to study the digital response of the streamer tubes, the analog response of the pickup strips and the momentum resolution of the muon spectrometer. Methods have been developed to carry the calibration results in space from the impact point of the test beam to the bulk of the detector and in time from the test beam period to all the data taking periods between 1987 and 1991, The number of hits along muon tracks was used to parametrize the dependence on fluctuations of temperature, tube voltage and gas composition. Curves and formulae are presented showing the energy response and the energy resolution for the different beam particles. The test beam data have been used to optimize and calibrate algorithms for the kinematical reconstruction of electron showers and for their extraction from the vast background of hadronic showers.

Published
1993

12. Measurement of Differential Cross-sections For Muon-neutrino Electron-scattering

Author

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

Subjects
Physics, Coupling constant, Scattering cross-section, Nuclear and High Energy Physics, Particle physics, Detector, Neutrino beam, Nuclear physics, High Energy Physics::Experiment, Muon neutrino, Charm (quantum number), Nuclear Experiment, Electron scattering, Particle Physics - Experiment, Differential (mathematics)
Abstract

We report on a study of the differential cross section dσ/dy for the processes of elastic νμ- and ν μ - electron scattering. The data on which this analysis is based were recorded between 1987 and 1990 with the CHARM II detector in the wide band neutrino beam at the CERN-SPS. For the first time the shapes of these y-distributions have been determined in a model-independent way. A fit to the data yields for the squares of the neutral coupling constants the ratio gR2/gL2=0.60 ± 0.19 (stat.) ± 0.09 (syst.).

Published
1993

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. TEST-RESULTS AND CONDITIONING PROCEDURE OF A LIMITED STREAMER-TUBE CALORIMETER

Author

A. Tadsen, M. Kubantsev, E. Gorini, M. Caria, B. Friend, D. Braun, Antonio Ereditato, P. Parascandolo, F. Niebergall, V. Jemanov, T. Delbar, W. Lippich, S. Guerra, V. Zacek, G. Piredda, Alistair King, E. Di Capua, H. Riege, D. De Pedis, D. Zanello, G. Basti, J. P. Dewulf, A. Rosanov, F. Grancagnolo, K. Winter, V. Khovansky, Pierre Vilain, G. Grégoire, P. F. Loverre, F. W. Büsser, P. Gorbunov, D. Geiregat, G. Lebée, F. Bergsma, C. Busi, J. L. Doumount, V. Palladino, W. Flegel, A. Staude, H. Grote, C. Gatto, P. Stähelin, U. Dore, J. Schütt, R. Santacesaria, J. Panman, T. Mouthuy, L. Gerland, C. Nieuwenhuis, E. Grigoriev, Abraham Seiden, R. Iasevoli, W. Glessing, P. Strolin, T. Bauche, H. Herbert, A. Capone, J. P., Dewulf, D., Geiregat, P., Vilain, F., Bergsma, C., Busi, A., Capone, T., Delbar, D., Depedi, A., Ereditato, W., Flegel, B., Friend, W. D., Glessing, H., Grote, A., King, G., Lebee, C., Nieuwenhui, J., Panman, A., Seiden, K., Winter, V., Zacek, T., Bauche, F. W., Busser, L., Gerland, F., Niebergall, H., Riege, J., Schutt, P., Stahelin, A., Tadsen, J. L., Doumount, G., Gregoire, T., Mouthuy, P., Gorbunov, E. A., Grigoriev, V., Jemanov, V. D., Khovansky, M., Kubantsev, A., Rosanov, D., Braun, H., Herbert, W., Lippich, A., Staude, M., Caria, C., Gatto, Gorini, Edoardo, F., Grancagnolo, R., Iasevoli, V., Palladino, P., Parascandolo, P., Strolin, G., Basti, E., Dicapua, U., Dore, S., Guerra, P. F., Loverre, G., Piredda, R., Santacesaria, and D., Zanello

Subjects
Nuclear physics, Physics, Elastic scattering, Nuclear and High Energy Physics, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Detector, High Energy Physics::Experiment, Tube (fluid conveyance), Charm (quantum number), Electron, Instrumentation, Beam (structure)
Abstract

The CHARM II Collaboration has built a massive, fine-grained calorimeter for the study of the elastic scattering {A figure is presented} short description of the detector will be followed by the presentation of some results obtained by exposing 40 of the 441 planes of the calorimeter to a beam of electrons and pions. Comments will be given about the conditioning procedure followed for the 154560 limited streamer tubes which compose the active part of the calorimeter.

Published
1988

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