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1. Results from the Fr??jus experiment on nucleon decay modes with charged leptons

Author

University of Michigan, 48109-1120, Ann Arbor, Michigan, USA; Bergische Universit??t-Gesamthochschule Wuppertal, W-5600, Wuppertal, Germany, Laboratoire de l'Acc??l??rateur Lin??aire, Centre d'Orsay, B??timent 200, F-91405, Orsay, France, DPhPE, CEN-Saclay, F-91191, Gif-sur-Yvette Cedex, France, Bergische Universit??t-Gesamthochschule Wuppertal, W-5600, Wuppertal, Germany, LPNHE-Ecole Polytechnique, Route de Saclay, F-91128, Plaiseau, France, I. Physikalisches Institut der RWTH Aachen, W-5100, Aachen, Germany, Bergische Universit??t-Gesamthochschule Wuppertal, W-5600, Wuppertal, Germany; Fakult??t f??r Physik, Universit??t Freiburg, Germany, Laboratoire de l'Acc??l??rateur Lin??aire, Centre d'Orsay, B??timent 200, F-91405, Orsay, France; Laboratoire GANIL, F-14021, Caen, France, Laboratoire de l'Acc??l??rateur Lin??aire, Centre d'Orsay, B??timent 200, F-91405, Orsay, France; L.P.C., Universit?? de Caen, F-14021, Caen, France, Fisher Controls GmbH, Solingen, Germany; Bergische Universit??t-Gesamthochschule Wuppertal, W-5600, Wuppertal, Germany, DPhPE, CEN-Saclay, F-91191, Gif-sur-Yvette Cedex, France; Istituto di Fisica, Universit?? di Milano, I-20133, Milano, Italy, Ann Arbor, M??ller, R., Blum, D., Eschstruth, P., Moscoso, L., Ernwein, J., Longuemare, C., Wintgen, P., Kuznik, B., Glicenstein, J. F., Mosca, L., Degrange, B., Arpesella, C., Roy, Ph., Berger, Ch., Fr??hlich, M., Dudelzak, B., Meyer, H., Laplanche, F., Becker, J., Jullian, S., Jacobi, B., Schubnell, Michael, L??ffler, J., Daum, H. J., Lalanne, D., Becker, K. H., Benadjal, Y., M??nch, H., Paulot, C., Perdereau, O., Chardin, G., Wei, Y., Szklarz, G., Nguyen-Khac, U., Behr, L., Tisserant, S., Bareyre, P., Barloutaud, R., Schleper, P., Raupach, F., Borg, A., Nisius, R., Bourdarios, C., University of Michigan, 48109-1120, Ann Arbor, Michigan, USA; Bergische Universit??t-Gesamthochschule Wuppertal, W-5600, Wuppertal, Germany, Laboratoire de l'Acc??l??rateur Lin??aire, Centre d'Orsay, B??timent 200, F-91405, Orsay, France, DPhPE, CEN-Saclay, F-91191, Gif-sur-Yvette Cedex, France, Bergische Universit??t-Gesamthochschule Wuppertal, W-5600, Wuppertal, Germany, LPNHE-Ecole Polytechnique, Route de Saclay, F-91128, Plaiseau, France, I. Physikalisches Institut der RWTH Aachen, W-5100, Aachen, Germany, Bergische Universit??t-Gesamthochschule Wuppertal, W-5600, Wuppertal, Germany; Fakult??t f??r Physik, Universit??t Freiburg, Germany, Laboratoire de l'Acc??l??rateur Lin??aire, Centre d'Orsay, B??timent 200, F-91405, Orsay, France; Laboratoire GANIL, F-14021, Caen, France, Laboratoire de l'Acc??l??rateur Lin??aire, Centre d'Orsay, B??timent 200, F-91405, Orsay, France; L.P.C., Universit?? de Caen, F-14021, Caen, France, Fisher Controls GmbH, Solingen, Germany; Bergische Universit??t-Gesamthochschule Wuppertal, W-5600, Wuppertal, Germany, DPhPE, CEN-Saclay, F-91191, Gif-sur-Yvette Cedex, France; Istituto di Fisica, Universit?? di Milano, I-20133, Milano, Italy, Ann Arbor, M??ller, R., Blum, D., Eschstruth, P., Moscoso, L., Ernwein, J., Longuemare, C., Wintgen, P., Kuznik, B., Glicenstein, J. F., Mosca, L., Degrange, B., Arpesella, C., Roy, Ph., Berger, Ch., Fr??hlich, M., Dudelzak, B., Meyer, H., Laplanche, F., Becker, J., Jullian, S., Jacobi, B., Schubnell, Michael, L??ffler, J., Daum, H. J., Lalanne, D., Becker, K. H., Benadjal, Y., M??nch, H., Paulot, C., Perdereau, O., Chardin, G., Wei, Y., Szklarz, G., Nguyen-Khac, U., Behr, L., Tisserant, S., Bareyre, P., Barloutaud, R., Schleper, P., Raupach, F., Borg, A., Nisius, R., and Bourdarios, C.

Abstract

Lower limits on the nucleon lifetime in channels containing at least one positron or muon are given. The analysis is based on 4 years of data taking with the Fr??jus detector. Various approaches to determine the background from atmospheric neutrinos are discussed and two different nuclear models are used in event simulations. The limits obtained range from 10 31 years for p ??? e + K *0 to 1.5??10 32 years for p ??? e + K *0 to 1.5??10 32 years for p ??? ?? + ?? .

Published
2006

2. Mrk 421, Mrk 501, and 1ES 1426+428 at 100 GeV with the CELESTE Cherenkov Telescope

Author

Smith, D. A., Brion, E., Britto, R., Bruel, P., Gordo, J. Bussons, Dumora, D., Durand, E., Eschstruth, P., Espigat, P., Holder, J., Jacholkowska, A., Lavalle, J., Gallou, R. Le, Lott, B., Manseri, H., Munz, F., Nuss, E., Piron, F., Rannot, R. C., Reposeur, T., Sako, T., Smith, D. A., Brion, E., Britto, R., Bruel, P., Gordo, J. Bussons, Dumora, D., Durand, E., Eschstruth, P., Espigat, P., Holder, J., Jacholkowska, A., Lavalle, J., Gallou, R. Le, Lott, B., Manseri, H., Munz, F., Nuss, E., Piron, F., Rannot, R. C., Reposeur, T., and Sako, T.

Abstract

We have measured the gamma-ray fluxes of the blazars Mrk 421 and Mrk 501 in the energy range between 50 and 350 GeV (1.2 to 8.3 x 10^25 Hz). The detector, called CELESTE, used first 40, then 53 heliostats of the former solar facility "Themis" in the French Pyrenees to collect Cherenkov light generated in atmospheric particle cascades. The signal from Mrk 421 is often strong. We compare its flux with previously published multi-wavelength studies and infer that we are straddling the high energy peak of the spectral energy distribution. The signal from Mrk 501 in 2000 was weak (3.4 sigma). We obtain an upper limit on the flux from 1ES 1426+428 of less than half that of the Crab flux near 100 GeV. The data analysis and understanding of systematic biases have improved compared to previous work, increasing the detector's sensitivity., Comment: 15 pages, 14 figures, accepted to A&A (July 2006) August 19 -- corrected error in author list

Published
2006
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3. Radioelectric Field Features of Extensive Air Showers Observed with CODALEMA

Author

Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Ravel, O., Saugrin, T., Valcares, S., Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Ravel, O., Saugrin, T., and Valcares, S.

Abstract

Based on a new approach to the detection of radio transients associated with extensive air showers induced by ultra high energy cosmic rays, the experimental apparatus CODALEMA is in operation, measuring about 1 event per day corresponding to an energy threshold ~ 5. 10^16 eV. Its performance makes possible for the first time the study of radio-signal features on an event-by-event basis. The sampling of the magnitude of the electric field along a 600 meters axis is analyzed. It shows that the electric field lateral spread is around 250 m (FWHM). The possibility to determine with radio both arrival directions and shower core positions is discussed., Comment: Accepted for publication in Astroparticle Physics

Published
2006
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6. Mrk 421, Mrk 501, and 1ES 1426+428 at 100 GeV with the CELESTE Cherenkov Telescope

Author

Smith, D. A., Brion, E., Britto, R., Bruel, P., Gordo, J. Bussons, Dumora, D., Durand, E., Eschstruth, P., Espigat, P., Holder, J., Jacholkowska, A., Lavalle, J., Gallou, R. Le, Lott, B., Manseri, H., Munz, F., Nuss, E., Piron, F., Rannot, R. C., Reposeur, T., Sako, T., Smith, D. A., Brion, E., Britto, R., Bruel, P., Gordo, J. Bussons, Dumora, D., Durand, E., Eschstruth, P., Espigat, P., Holder, J., Jacholkowska, A., Lavalle, J., Gallou, R. Le, Lott, B., Manseri, H., Munz, F., Nuss, E., Piron, F., Rannot, R. C., Reposeur, T., and Sako, T.

Abstract

We have measured the gamma-ray fluxes of the blazars Mrk 421 and Mrk 501 in the energy range between 50 and 350 GeV (1.2 to 8.3 x 10^25 Hz). The detector, called CELESTE, used first 40, then 53 heliostats of the former solar facility "Themis" in the French Pyrenees to collect Cherenkov light generated in atmospheric particle cascades. The signal from Mrk 421 is often strong. We compare its flux with previously published multi-wavelength studies and infer that we are straddling the high energy peak of the spectral energy distribution. The signal from Mrk 501 in 2000 was weak (3.4 sigma). We obtain an upper limit on the flux from 1ES 1426+428 of less than half that of the Crab flux near 100 GeV. The data analysis and understanding of systematic biases have improved compared to previous work, increasing the detector's sensitivity., Comment: 15 pages, 14 figures, accepted to A&A (July 2006) August 19 -- corrected error in author list

Published
2006
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7. Radioelectric Field Features of Extensive Air Showers Observed with CODALEMA

Author

Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Ravel, O., Saugrin, T., Valcares, S., Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Ravel, O., Saugrin, T., and Valcares, S.

Abstract

Based on a new approach to the detection of radio transients associated with extensive air showers induced by ultra high energy cosmic rays, the experimental apparatus CODALEMA is in operation, measuring about 1 event per day corresponding to an energy threshold ~ 5. 10^16 eV. Its performance makes possible for the first time the study of radio-signal features on an event-by-event basis. The sampling of the magnitude of the electric field along a 600 meters axis is analyzed. It shows that the electric field lateral spread is around 250 m (FWHM). The possibility to determine with radio both arrival directions and shower core positions is discussed., Comment: Accepted for publication in Astroparticle Physics

Published
2006
Full Text
View/download PDF

8. Features of radio-detected Extensive Air Shower with CODALEMA

Author

Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Ravel, O., Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., and Ravel, O.

Abstract

Some performances of the present CODALEMA experiment, set up to analyse radio-detected Extensive Air Shower (EAS) events, are presented. Characteristics of the EAS electric field distribution sampled on a 600~m long axis are discussed., Comment: 4 pages, 3 figures, proceeding des rencontres de l'astrophysique francaise, Strasbourg, 2005

Published
2005

9. Radio Detection of Extensive Air Showers with CODALEMA

Author

Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Ravel, O., Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., and Ravel, O.

Abstract

The principle and performances of the CODALEMA experimental device, set up to study the possibility of high energy cosmic rays radio detection, are presented. Radio transient signals associated to cosmic rays have been identified, for which arrival directions and shower's electric field topologies have been extracted from the antenna signals. The measured rate, about 1 event per day, corresponds to an energy threshold around 5.10^16 eV. These results allow to determine the perspectives offered by the present experimental design for radiodetection of UHECR at a larger scale., Comment: 4 pages and 3 figures. To appear in the Proceedings of the 29th ICRC, Pune (2005)

Published
2005

10. Radio Detection of Cosmic Ray Air Showers with Codalema

Author

Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Ravel, O., Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., and Ravel, O.

Abstract

Studies of the radio detection of Extensive Air Showers is the goal of the demonstrative experiment CODALEMA. Previous analysis have demonstrated that detection around $5.10^{16}$ eV was achieved with this set-up. New results allow for the first time to study the topology of the electric field associated to EAS events on a event by event basis., Comment: 6 pages, 4 figures Proceedings of the Rencontres de Moriond, Very High Energy Phenomena in the Universe, La Thuile, Italy (March 12-19, 2005)

Published
2005

11. Radio-Detection Signature of High Energy Cosmic Rays by the CODALEMA Experiment

Author

Ardouin, D., Bellétoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Rahmani, A., Ravel, O., Ardouin, D., Bellétoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Rahmani, A., and Ravel, O.

Abstract

Taking advantage of recent technical progress which has overcome some of the difficulties encountered in the 1960's in the radio detection of extensive air showers induced by ultra high energy cosmic rays (UHECR), a new experimental apparatus (CODALEMA) has been built and operated. We will present the characteristics of this device and the analysis techniques that have been developed for observing electrical transients associated with cosmic rays. We find a collection of events for which both time and arrival direction coincidences between particle and radio signals are observed. The counting rate corresponds to shower energies $\geq 5\times 10^{16}$ eV. The performance level which has been reached considerably enlarges the perspectives for studying UHECR events using radio detection., Comment: merge of astro-ph/0504240 and astro-ph/0504297 into one paper

Published
2005
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12. Evidence for Radio Detection of Extensive Air Showers Induced by Ultra High Energy Cosmic Rays

Author

Ardouin, D., Bellétoile, A., Charrier, D., Dallier, R., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Ravel, O., Lecacheux, A., Denis, L., Eschstruth, P., Monnier-Ragaigne, D., Ardouin, D., Bellétoile, A., Charrier, D., Dallier, R., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Ravel, O., Lecacheux, A., Denis, L., Eschstruth, P., and Monnier-Ragaigne, D.

Abstract

Firm evidence for a radio emission counterpart of cosmic ray air showers is presented. By the use of an antenna array set up in coincidence with ground particle detectors, we find a collection of events for which both time and arrival direction coincidences between particle and radio signals are observed. The counting rate corresponds to shower energies $\gtrsim 5\times 10^{16}$ eV. These results open overwhelming perspectives to complete existing detection methods for the observation of ultra high-energy cosmic rays., Comment: 4 pages, 4 figures

Published
2005

13. Radio Detection of Cosmic Ray Air Showers with Codalema

Author

Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Ravel, O., Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., and Ravel, O.

Abstract

Studies of the radio detection of Extensive Air Showers is the goal of the demonstrative experiment CODALEMA. Previous analysis have demonstrated that detection around $5.10^{16}$ eV was achieved with this set-up. New results allow for the first time to study the topology of the electric field associated to EAS events on a event by event basis., Comment: 6 pages, 4 figures Proceedings of the Rencontres de Moriond, Very High Energy Phenomena in the Universe, La Thuile, Italy (March 12-19, 2005)

Published
2005

14. Radio-Detection Signature of High Energy Cosmic Rays by the CODALEMA Experiment

Author

Ardouin, D., Bellétoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Rahmani, A., Ravel, O., Ardouin, D., Bellétoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Rahmani, A., and Ravel, O.

Abstract

Taking advantage of recent technical progress which has overcome some of the difficulties encountered in the 1960's in the radio detection of extensive air showers induced by ultra high energy cosmic rays (UHECR), a new experimental apparatus (CODALEMA) has been built and operated. We will present the characteristics of this device and the analysis techniques that have been developed for observing electrical transients associated with cosmic rays. We find a collection of events for which both time and arrival direction coincidences between particle and radio signals are observed. The counting rate corresponds to shower energies $\geq 5\times 10^{16}$ eV. The performance level which has been reached considerably enlarges the perspectives for studying UHECR events using radio detection., Comment: merge of astro-ph/0504240 and astro-ph/0504297 into one paper

Published
2005
Full Text
View/download PDF

15. Evidence for Radio Detection of Extensive Air Showers Induced by Ultra High Energy Cosmic Rays

Author

Ardouin, D., Bellétoile, A., Charrier, D., Dallier, R., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Ravel, O., Lecacheux, A., Denis, L., Eschstruth, P., Monnier-Ragaigne, D., Ardouin, D., Bellétoile, A., Charrier, D., Dallier, R., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Ravel, O., Lecacheux, A., Denis, L., Eschstruth, P., and Monnier-Ragaigne, D.

Abstract

Firm evidence for a radio emission counterpart of cosmic ray air showers is presented. By the use of an antenna array set up in coincidence with ground particle detectors, we find a collection of events for which both time and arrival direction coincidences between particle and radio signals are observed. The counting rate corresponds to shower energies $\gtrsim 5\times 10^{16}$ eV. These results open overwhelming perspectives to complete existing detection methods for the observation of ultra high-energy cosmic rays., Comment: 4 pages, 4 figures

Published
2005

16. Features of radio-detected Extensive Air Shower with CODALEMA

Author

Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Ravel, O., Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., and Ravel, O.

Abstract

Some performances of the present CODALEMA experiment, set up to analyse radio-detected Extensive Air Shower (EAS) events, are presented. Characteristics of the EAS electric field distribution sampled on a 600~m long axis are discussed., Comment: 4 pages, 3 figures, proceeding des rencontres de l'astrophysique francaise, Strasbourg, 2005

Published
2005

17. Radio Detection of Extensive Air Showers with CODALEMA

Author

Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Ravel, O., Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., and Ravel, O.

Abstract

The principle and performances of the CODALEMA experimental device, set up to study the possibility of high energy cosmic rays radio detection, are presented. Radio transient signals associated to cosmic rays have been identified, for which arrival directions and shower's electric field topologies have been extracted from the antenna signals. The measured rate, about 1 event per day, corresponds to an energy threshold around 5.10^16 eV. These results allow to determine the perspectives offered by the present experimental design for radiodetection of UHECR at a larger scale., Comment: 4 pages and 3 figures. To appear in the Proceedings of the 29th ICRC, Pune (2005)

Published
2005

18. Radio Detection of Cosmic Ray Extensive Air Showers: present status of the CODALEMA experiment

Author

Belletoile, A., Ardouin, D., Charrier, D., Dallier, Richard, Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Rahmani, A., Ravel, O., Belletoile, A., Ardouin, D., Charrier, D., Dallier, Richard, Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Rahmani, A., and Ravel, O.

Abstract

Data acquisition and analysis for the CODALEMA experiment, in operation for more than one year, has provided improved knowledge of the characteristics of this new device. At the same time, an important effort has been made to develop processing techniques for extracting transient signals from data containing interference., Comment: september 2004

Published
2004

19. Radiodetection of Cosmic Ray Extensive Air Showers

Author

Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaiggne, D., Rahmani, A., Ravel, O., Collaboration, the Codalema, Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaiggne, D., Rahmani, A., Ravel, O., and Collaboration, the Codalema

Abstract

We present the characteristics and performance of a demonstration experiment devoted to the observation of ultra high- energy cosmic ray extensive air showers using a radiodetection technique. In a first step, one antenna narrowed band filtered acting as trigger, with a 4 $\sigma$ threshold above sky background-level, was used to tag any radio transient in coincidence on the antenna array. Recently, the addition of 4 particle detectors has allowed us to observe cosmic ray events in coincidence with antennas.

Published
2004
Full Text
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21. Radiodetection of Cosmic Ray Extensive Air Showers

Author

Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaiggne, D., Rahmani, A., Ravel, O., Collaboration, the Codalema, Ardouin, D., Belletoile, A., Charrier, D., Dallier, R., Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lamblin, J., Lautridou, P., Lecacheux, A., Monnier-Ragaiggne, D., Rahmani, A., Ravel, O., and Collaboration, the Codalema

Abstract

We present the characteristics and performance of a demonstration experiment devoted to the observation of ultra high- energy cosmic ray extensive air showers using a radiodetection technique. In a first step, one antenna narrowed band filtered acting as trigger, with a 4 $\sigma$ threshold above sky background-level, was used to tag any radio transient in coincidence on the antenna array. Recently, the addition of 4 particle detectors has allowed us to observe cosmic ray events in coincidence with antennas.

Published
2004
Full Text
View/download PDF

22. Radio Detection of Cosmic Ray Extensive Air Showers: present status of the CODALEMA experiment

Author

Belletoile, A., Ardouin, D., Charrier, D., Dallier, Richard, Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Rahmani, A., Ravel, O., Belletoile, A., Ardouin, D., Charrier, D., Dallier, Richard, Denis, L., Eschstruth, P., Gousset, T., Haddad, F., Lautridou, P., Lecacheux, A., Monnier-Ragaigne, D., Rahmani, A., and Ravel, O.

Abstract

Data acquisition and analysis for the CODALEMA experiment, in operation for more than one year, has provided improved knowledge of the characteristics of this new device. At the same time, an important effort has been made to develop processing techniques for extracting transient signals from data containing interference., Comment: september 2004

Published
2004

23. Measurement of the Crab Flux Above 60 GeV with the CELESTE Cherenkov Telescope

Author

De Naurois, M., Holder, J., Bazer-Bachi, R., Bergeret, H., Bruel, P., Cordier, A., Debiais, G., Dezalay, J-P., Dumora, D., Durand, E., Eschstruth, P., Espigat, P., Fabre, B., Fleury, P., Herault, N., Hrabovsky, M., Incerti, S., Gallou, R. Le, Munz, F., Musquere, A., Olive, J-F., Pare, E., Quebert, J., Rannot, R. C., Reposeur, T., Rob, L., Roy, P., Sako, T., Schovanek, P., Smith, D. A., Snabre, P., Volte, A., De Naurois, M., Holder, J., Bazer-Bachi, R., Bergeret, H., Bruel, P., Cordier, A., Debiais, G., Dezalay, J-P., Dumora, D., Durand, E., Eschstruth, P., Espigat, P., Fabre, B., Fleury, P., Herault, N., Hrabovsky, M., Incerti, S., Gallou, R. Le, Munz, F., Musquere, A., Olive, J-F., Pare, E., Quebert, J., Rannot, R. C., Reposeur, T., Rob, L., Roy, P., Sako, T., Schovanek, P., Smith, D. A., Snabre, P., and Volte, A.

Abstract

We have converted the former solar electrical plant THEMIS (French Pyrenees) into an atmospheric Cherenkov detector called CELESTE, which records gamma rays above 30 GeV (7E24 Hz). Here we present the first sub-100 GeV detection by a ground based telescope of a gamma ray source, the Crab nebula, in the energy region between satellite measurements and imaging atmospheric Cherenkov telescopes. At our analysis threshold energy of 60 +/- 20 GeV we measure a gamma ray rate of 6.1 +/- 0.8 per minute. Allowing for 30% systematic uncertainties and a 30% error on the energy scale yields an integral gamma ray flux of I(E>60 GeV) = 6.2^{+5.3}_{-2.3} E-6 photons m^-2 s^-1. The analysis methods used to obtain the gamma ray signal from the raw data are detailed. In addition, we determine the upper limit for pulsed emission to be <12% of the Crab flux at the 99% confidence level, in the same energy range. Our result indicates that if the power law observed by EGRET is attenuated by a cutoff of form e^{-E/E_0} then E_0 < 26 GeV. This is the lowest energy probed by a Cherenkov detector and leaves only a narrow range unexplored beyond the energy range studied by EGRET., Comment: 34 pages, accepted by the Astrophysical Journal

Published
2001
Full Text
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24. Measurement of the Crab Flux Above 60 GeV with the CELESTE Cherenkov Telescope

Author

De Naurois, M., Holder, J., Bazer-Bachi, R., Bergeret, H., Bruel, P., Cordier, A., Debiais, G., Dezalay, J-P., Dumora, D., Durand, E., Eschstruth, P., Espigat, P., Fabre, B., Fleury, P., Herault, N., Hrabovsky, M., Incerti, S., Gallou, R. Le, Munz, F., Musquere, A., Olive, J-F., Pare, E., Quebert, J., Rannot, R. C., Reposeur, T., Rob, L., Roy, P., Sako, T., Schovanek, P., Smith, D. A., Snabre, P., Volte, A., De Naurois, M., Holder, J., Bazer-Bachi, R., Bergeret, H., Bruel, P., Cordier, A., Debiais, G., Dezalay, J-P., Dumora, D., Durand, E., Eschstruth, P., Espigat, P., Fabre, B., Fleury, P., Herault, N., Hrabovsky, M., Incerti, S., Gallou, R. Le, Munz, F., Musquere, A., Olive, J-F., Pare, E., Quebert, J., Rannot, R. C., Reposeur, T., Rob, L., Roy, P., Sako, T., Schovanek, P., Smith, D. A., Snabre, P., and Volte, A.

Abstract

We have converted the former solar electrical plant THEMIS (French Pyrenees) into an atmospheric Cherenkov detector called CELESTE, which records gamma rays above 30 GeV (7E24 Hz). Here we present the first sub-100 GeV detection by a ground based telescope of a gamma ray source, the Crab nebula, in the energy region between satellite measurements and imaging atmospheric Cherenkov telescopes. At our analysis threshold energy of 60 +/- 20 GeV we measure a gamma ray rate of 6.1 +/- 0.8 per minute. Allowing for 30% systematic uncertainties and a 30% error on the energy scale yields an integral gamma ray flux of I(E>60 GeV) = 6.2^{+5.3}_{-2.3} E-6 photons m^-2 s^-1. The analysis methods used to obtain the gamma ray signal from the raw data are detailed. In addition, we determine the upper limit for pulsed emission to be <12% of the Crab flux at the 99% confidence level, in the same energy range. Our result indicates that if the power law observed by EGRET is attenuated by a cutoff of form e^{-E/E_0} then E_0 < 26 GeV. This is the lowest energy probed by a Cherenkov detector and leaves only a narrow range unexplored beyond the energy range studied by EGRET., Comment: 34 pages, accepted by the Astrophysical Journal

Published
2001
Full Text
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25. Prototype Tests for the CELESTE Solar Array Gamma--Ray Telescope

Author

Giebels, B., Bazer-Bachi, R., Bergeret, H., Cordier, A., Debiais, G., De Naurois, M., Dezalay, J. P., Dumora, D., Eschstruth, P., Espigat, P., Fabre, B., Fleury, P., Ghesquière, C., Herault, N., Malet, I., Merkel, B., Meynadier, C., Palatka, M., Paré, E., Procureur, J., Punch, M., Québert, J., Ragan, K., Rob, L., Schovanek, P., Smith, D. A., Vrana, J., Giebels, B., Bazer-Bachi, R., Bergeret, H., Cordier, A., Debiais, G., De Naurois, M., Dezalay, J. P., Dumora, D., Eschstruth, P., Espigat, P., Fabre, B., Fleury, P., Ghesquière, C., Herault, N., Malet, I., Merkel, B., Meynadier, C., Palatka, M., Paré, E., Procureur, J., Punch, M., Québert, J., Ragan, K., Rob, L., Schovanek, P., Smith, D. A., and Vrana, J.

Abstract

The CELESTE experiment will be an Atmospheric Cherenkov detector designed to bridge the gap in energy sensitivity between current satellite and ground-based gamma-ray telescopes, 20 to 300 GeV. We present test results made at the former solar power plant, Themis, in the French Pyrenees. The tests confirm the viability of using a central tower heliostat array for Cherenkov wavefront sampling., Comment: LaTeX2e,30 pages including 14 figures, accepted for publication by Nuclear Instruments & Methods Section A

Published
1998
Full Text
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26. Prototype Tests for the CELESTE Solar Array Gamma--Ray Telescope

Author

Giebels, B., Bazer-Bachi, R., Bergeret, H., Cordier, A., Debiais, G., De Naurois, M., Dezalay, J. P., Dumora, D., Eschstruth, P., Espigat, P., Fabre, B., Fleury, P., Ghesquière, C., Herault, N., Malet, I., Merkel, B., Meynadier, C., Palatka, M., Paré, E., Procureur, J., Punch, M., Québert, J., Ragan, K., Rob, L., Schovanek, P., Smith, D. A., Vrana, J., Giebels, B., Bazer-Bachi, R., Bergeret, H., Cordier, A., Debiais, G., De Naurois, M., Dezalay, J. P., Dumora, D., Eschstruth, P., Espigat, P., Fabre, B., Fleury, P., Ghesquière, C., Herault, N., Malet, I., Merkel, B., Meynadier, C., Palatka, M., Paré, E., Procureur, J., Punch, M., Québert, J., Ragan, K., Rob, L., Schovanek, P., Smith, D. A., and Vrana, J.

Abstract

The CELESTE experiment will be an Atmospheric Cherenkov detector designed to bridge the gap in energy sensitivity between current satellite and ground-based gamma-ray telescopes, 20 to 300 GeV. We present test results made at the former solar power plant, Themis, in the French Pyrenees. The tests confirm the viability of using a central tower heliostat array for Cherenkov wavefront sampling., Comment: LaTeX2e,30 pages including 14 figures, accepted for publication by Nuclear Instruments & Methods Section A

Published
1998
Full Text
View/download PDF

27. The Pierre Auger Observatory

Author

Zavrtanik, D., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M.T., Epele, L.N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S.J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., ROvero, A., Clay, R.W., Dawson, B.R., Pace, R., Riordan, D., Thornton, G.J., Wild, N.R., Boutonnet, C., Brunet, J-M., Capdevielle, J-N., Cohen, F., Courty, B., Guglielmi, L., Jaeger, J-J., Revenu, Benoît, Tristram, G., Waisbard, J., Bertou, X., Billoir, P., Boratav, M., Castera, A., Dagoret-Campagne, S., Deligny, O., Lachaud, C., Letessier-Selvon, A., Genolini, B., Lefebvre, F., Lhenry-Yvon, I., Trung, T.N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J.N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., jouniaux, O., Lavigne, B., Lodygensky, O., Rypko, J., Urban, M., Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Kern, H., Klages, H.O., Kleinfeller, J., Mathes, H.J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Kampert, K.H., Keilhauer, B., Argiro, S., Camin, D.V., Guerard, C., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, M., Clark, P., de Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R., Cronin, J.W., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Matthews, J.M., McEwen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Roberts, M., Allison, P., Beatty, J., Coutu, S., DuVernois, M., Cassiday, G., Fick, B., Sommers, P., Anchordoqui, L., Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S., Aguirre, C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D.Q., Darriulat, P., Chung, N., Dzung, N.T., Dinh, P.N., Phuong, P.T., Thuan, V.V., Zavrtanik, D., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M.T., Epele, L.N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S.J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., ROvero, A., Clay, R.W., Dawson, B.R., Pace, R., Riordan, D., Thornton, G.J., Wild, N.R., Boutonnet, C., Brunet, J-M., Capdevielle, J-N., Cohen, F., Courty, B., Guglielmi, L., Jaeger, J-J., Revenu, Benoît, Tristram, G., Waisbard, J., Bertou, X., Billoir, P., Boratav, M., Castera, A., Dagoret-Campagne, S., Deligny, O., Lachaud, C., Letessier-Selvon, A., Genolini, B., Lefebvre, F., Lhenry-Yvon, I., Trung, T.N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J.N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., jouniaux, O., Lavigne, B., Lodygensky, O., Rypko, J., Urban, M., Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Kern, H., Klages, H.O., Kleinfeller, J., Mathes, H.J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Kampert, K.H., Keilhauer, B., Argiro, S., Camin, D.V., Guerard, C., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, M., Clark, P., de Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R., Cronin, J.W., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Matthews, J.M., McEwen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Roberts, M., Allison, P., Beatty, J., Coutu, S., DuVernois, M., Cassiday, G., Fick, B., Sommers, P., Anchordoqui, L., Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S., Aguirre, C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D.Q., Darriulat, P., Chung, N., Dzung, N.T., Dinh, P.N., Phuong, P.T., and Thuan, V.V.

28. The Pierre Auger Observatory

Author

Zavrtanik, D., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M.T., Epele, L.N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S.J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., Rovero, A., Clay, R.W., Dawson, B.R., Pace, R., Riordan, D., Thornton, G.J., Wild, N.R., Boutonnet, C., Brunet, J-M., Capdevielle, J-N., Cohen, F., Courty, B., Guglielmi, L., Jaeger, J-J., Revenu, B., Tristram, G., Waisbard, J., Bertou, X., Billoir, P., Boratav, M., Castera, A., Dagoret-Campagne, S., Deligny, O., Lachaud, C., Letessier-Selvon, A., Genolini, B., Lefebvre, F., Lhenry-Yvon, I., Trung, T.N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J.N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., Jouniaux, O., Lavigne, B., Lodygensky, O., Rypko, J., Urban, M., Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Keilhauer, B., Kern, H., Klages, H.O., Kleinfeller, J., Mathes, H.J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Guerard, C., Kampert, K.H., Argiro, S., Camin, D.V., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, M., Clark, P., de Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R., Cronin, J.W., Fick, B., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Matthews, J.M., McEwen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Roberts, M., Allison, P., Beatty, J., Coutu, S., DuVernois, M., Cassiday, G., Sommers, P., Anchordoqui, L., Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S., Aguirre, C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D.Q., Darriulat, P., Chung, N., Dzung, N.T., Dinh, P.N., Phuong, P.T., Thuan, V.V., Zavrtanik, D., Altmann, E., Alvarez, P., Bauleo, P., Bonifazi, C., Etchegoyen, A., Eusebi, R., Fazzini, N., Ferrero, A., Filevich, A., Reguera, A., Cillis, A., Dova, M.T., Epele, L.N., Grunfeld, C., Mariazzi, A., Martinez, N., Roulet, E., Sciutto, S.J., Veiga, A., Allekotte, I., Avila, G., Masperi, L., Orsaria, M., Rovero, A., Clay, R.W., Dawson, B.R., Pace, R., Riordan, D., Thornton, G.J., Wild, N.R., Boutonnet, C., Brunet, J-M., Capdevielle, J-N., Cohen, F., Courty, B., Guglielmi, L., Jaeger, J-J., Revenu, B., Tristram, G., Waisbard, J., Bertou, X., Billoir, P., Boratav, M., Castera, A., Dagoret-Campagne, S., Deligny, O., Lachaud, C., Letessier-Selvon, A., Genolini, B., Lefebvre, F., Lhenry-Yvon, I., Trung, T.N., Parizot, E., Pouthas, J., Suomijarvi, T., Albert, J.N., Arnault, C., Bilhaut, R., Cordier, A., Cormier, E., Eschstruth, P., Jouniaux, O., Lavigne, B., Lodygensky, O., Rypko, J., Urban, M., Bluemer, H., Bollmann, E., Csabo, T., Grindler, A., Gumbsheimer, R., Heck, D., Hucker, H., Keilhauer, B., Kern, H., Klages, H.O., Kleinfeller, J., Mathes, H.J., Matussek, P., Michel-Piper, I., Risse, M., Schleif, G., Thouw, T., Balzer, M., Berg, R., Bormann, D., Gemmeke, H., Giraud, H., Kleifges, M., Kopmann, A., Kunka, N., Menchikov, A., Osswald, B., Remmel, U., Tscherniakhovski, D., Barenthien, N., Guerard, C., Kampert, K.H., Argiro, S., Camin, D.V., Ambrosio, M., Bernardini, C., Facal, P., Filosofi, R., Fois, M., Matthiae, G., Privitera, P., Salina, G., Borreani, G., Cester, R., Menichetti, E., Pastrone, N., Aramo, C., Cangiano, E., Fonte, R., Insolia, A., Raia, G., Gora, D., Homola, P., Kutschera, M., Ostrowski, M., Wilczynska, B., Wilczynski, H., Arcon, I., Filipcic, A., Zavrtanik, M., Clark, P., de Bruijn, L., Knapp, J., Lloyd-Evans, J., Patel, M., Tunnicliffe, V., Walker, P., Watson, A., Arisaka, K., Bonushkin, Y., Kubic, J., Slater, W., Tripathi, A., Brack, J., Hofman, G., Ristinen, R., Harton, J., Sites, J., Warner, D., Wilson, R., Cronin, J.W., Fick, B., Gibbs, K., Albrow, M., Andrews, R., Berman, E., Hoffer, D., Glass, H., Hojvat, C., Mantsch, P., Mazur, P., Spinka, H., Voyvodic, L., Matthews, J.M., McEwen, M., Meyhandan, R., Darling, J., Dorofeev, A., Nemiroff, B., Nitz, D., Rafert, B., Ruotsala, S., Szadkowski, Z., Trombley, M., Dieterle, B., Matthews, J., Riley, S., Roberts, M., Allison, P., Beatty, J., Coutu, S., DuVernois, M., Cassiday, G., Sommers, P., Anchordoqui, L., Machacek, M., Paul, T., Swain, J., Taylor, L., Akhperjanian, A., Chilingarian, A., Hovsepian, G., Mnatzakanian, E., Sahakian, V., Ter-Antonian, S., Aguirre, C., Bustos, R., Choque, K., Ticona, A., Ticona, R., Velarde, A., Thieu, D.Q., Darriulat, P., Chung, N., Dzung, N.T., Dinh, P.N., Phuong, P.T., and Thuan, V.V.

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