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14 results on '"Payre, P."'

1. The Positioning System of the ANTARES Neutrino Telescope

Author

Adrián-Martínez, S., Ageron, M., Aguilar, J. A., Samarai, I. Al, Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J. -J., Baret, B., Basa, S., Bertin, V., Biagi, S., Bigi, A., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouhou, B., Bouwhuis, M. C., Brunner, J., Busto, J., Camarena, F., Capone, A., Carloganu, C., Carminati, G., Carr, J., Cecchini, S., Charif, Z., Charvis, Ph., Chiarusi, T., Circella, M., Coniglione, R., Costantini, H., Coyle, P., Curtil, C., De Bonis, G., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Enzenhöfer, A., Ernenwein, J. -P., Escoffier, S., Fermani, P., Ferri, M., Flaminio, V., Folger, F., Fritsch, U., Fuda, J. -L., Galatá, S., Gay, P., Giacomelli, G., Giordano, V., Gómez-González, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Hartman, J., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Herold, B., Hößl, J., Hsu, C. C., de Jong, M., Kadler, M., Kalekin, O., Kappes, A., Katz, U., Kavatsyuk, O., Keller, P., Kooijman, P., Kopper, C., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamare, P., Larosa, G., Lattuada, D., Lefévre, D., Van Suu, A. Le, Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Mangano, S., Marcelin, M., Margiotta, A., Martínez-Mora, J. A., Meli, A., Montaruli, T., Moscoso, L., Motz, H., Neff, M., Nezri, E., Niess, V., Palioselitis, D., Păvălaş, G. E., Payet, K., Payre, P., Petrovic, J., Piattelli, P., Picot-Clemente, N., Popa, V., Pradier, T., Presani, E., Racca, C., Real, D., Reed, C., Riccobene, G., Richardt, C., Richter, R., Rivière, C., Robert, A., Roensch, K., Rostovtsev, A., Ruiz-Rivas, J., Rujoiu, M., Russo, G. V., Salesa, F., Samtleben, D. F. E., Schöck, F., Schuller, J. -P., Schüssler, F., Seitz, T., Shanidze, R., Simeone, F., Spies, A., Spurio, M., Steijger, J. J. M., Stolarczyk, Th., Sánchez-Losa, A., Taiuti, M., Tamburini, C., Toscano, S., Vallage, B., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Wagner, S., Wijnker, G., Wilms, J., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

The ANTARES neutrino telescope, located 40km off the coast of Toulon in the Mediterranean Sea at a mooring depth of about 2475m, consists of twelve detection lines equipped typically with 25 storeys. Every storey carries three optical modules that detect Cherenkov light induced by charged secondary particles (typically muons) coming from neutrino interactions. As these lines are flexible structures fixed to the sea bed and held taut by a buoy, sea currents cause the lines to move and the storeys to rotate. The knowledge of the position of the optical modules with a precision better than 10cm is essential for a good reconstruction of particle tracks. In this paper the ANTARES positioning system is described. It consists of an acoustic positioning system, for distance triangulation, and a compass-tiltmeter system, for the measurement of the orientation and inclination of the storeys. Necessary corrections are discussed and the results of the detector alignment procedure are described.

Published
2012
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2. Contributions to the 32nd International Cosmic Ray Conference (ICRC 2011) by the ANTARES collaboration

Author

Adrián-Martínez, S., Aguilar, J. A., Samarai, I. Al, Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J-J., Baret, B., Basa, S., Bertin, V., Biagi, S., Bigi, A., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouhou, B., Bouwhuis, M. C., Brunner, J., Busto, J., Camarena, F., Capone, A., Carloganu, C., Carminati, G., Carr, J., Cecchini, S., Charif, Z., Charvis, Ph., Chiarusi, T., Circella, M., Costantini, H., Coyle, P., Creusto, A., Curtil, C., De Bonis, G., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Enzenhöfer, A., Ernenwein, J-P., Escoffier, S., Fermani, P., Ferri, M., Flaminio, V., Folger, F., Fritsch, U., Fuda, J-L., Galatà, S., Gay, P., Giacomelli, G., Giordano, V., Gómez-González, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Hartman, J., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Herold, B., Hößl, J., Hsu, C. C., de Jong, M., Kadler, M., Kalekin, O., Kappes, A., Katz, U., Kavatsyuk, O., Kooijman, P., Kopper, C., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamare, P., Larosa, G., Lattuada, D., Lefèvre, D., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Mangano, S., Marcelin, M., Margiotta, A., Martínez-Mora, J. A., Meli, A., Montaruli, T., Morganti, M., Moscoso, L., Motz, H., Neff, M., Nezri, E., Palioselitis, D., Pavalas, G. E., Payet, K., Payre, P., Petrovic, J., Piattelli, P., Picot-Clemente, N., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Riccobene, G., Richardt, C., Richter, R., Rivière, C., Robert, A., Roensch, K., Rostovtsev, A., Ruiz-Rivas, J., Rujoiu, M., Russo, G. V., Salesa, F., Sapienza, P., Schöck, F., Schuller, J-P., Schüssler, F., Seitz, T., Shanidze, R., Simeone, F., Spies, A., Spurio, M., Steijger, J. J. M., Stolarczyk, Th., Sánchez-Losa, A., Taiuti, M., Tamburini, C., Toscano, S., Vallage, B., Vallée, C., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Wagner, S., Wijnker, G., Wilms, J., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The ANTARES detector, completed in 2008, is the largest neutrino telescope in the Northern hemisphere. It is located at a depth of 2.5 km in the Mediterranean Sea, 40 km off the Toulon shore. The scientific scope of the experiment is very broad, being the search for astrophysical neutrinos the main goal. In this paper we collect the 22 contributions of the ANTARES collaboration to the 32nd International Cosmic Ray Conference (ICRC 2011). At this stage of the experiment the scientific output is very rich and the contributions included in these proceedings cover the main physics results (steady point sources, correlations with GRBs, diffuse fluxes, target of opportunity programs, dark matter, exotic physics, oscillations, etc.) and some relevant detector studies (water optical properties, energy reconstruction, moon shadow, accoustic detection, etc.), Comment: 93 pages, collection of proceedings to ICRC2011 by ANTARES collaboration

Published
2011
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3. Acoustic and optical variations during rapid downward motion episodes in the deep north-western Mediterranean Sea

Author

van Haren, H., Taupier-Letage, I., Aguilar, J. A., Albert, A., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J. -J., Auer, R., Baret, B., Basa, S., Bazzotti, M., Bertin, V., Biagi, S., Bigongiari, C., Bou-Cabof, M., Bouwhuis, M. C., Brown, A., Brunner, J., Busto, J., Camarena, F., Capone, A., Carminati, G., Carr, J., Castel, D., Castorina, E., Cavasinni, V., Cecchini, S., Charvis, Ph., Chiarusi, T., Circella, M., Coniglione, R., Costantini, H., Cottini, N., Coyleh, P., Curtil, C., De Bonis, G., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., Emanuele, U., Ernenwein, J. -P., Escoffier, S., Fehr, F., Flaminio, V., Fratini, K., Fritsch, U., Fuda, J. -L., Giacomelli, G., Gómez-González, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Hößl, J., de Jong, M., Kalantar-Nayestanakia, N., Kalekin, O., Kappes, A., Katz, U., Kooijman, P., Kopper, C., Kouchner, A., Kretschmer, W., Lahmann, R., Lamare, P., Lambard, G., Laros, G., Laschinsky, H., Lefèvre, D., Lelaizant, G., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Lucarelli, F., Lyons, K., Mangano, S., Marcelin, M., Margiotta, A., Martinez-Mora, J. A., Maurin, G., Mazure, A., Melissas, M., Montaruli, T., Morganti, M., Moscoso, L., Motz, H., Naumann, C., Neff, M., Ostasch, R., Palioselitis, G., Păvălaş, G. E., Payre, P., Petrovic, J., Piattelli, P., Picot-Clemente, N., Picqu, C., Pillet, R., Popa, V., Pradier, T., Presani, E., Racca, C., Radu, A., Reed, C., Riccobene, G., Richardt, C., Rujoiu, M., Russo, G. V., Sales, F., Schoeck, F., Schuller, J. -P., Shanidze, R., Simeone, F., Spurio, M., Steijger, J. J. M., Stolarczyk, Th., Tamburini, C., Tasca, L., Toscano, S., Vallage, B., Van Elewyck, V., Vecchi, M., Vernin, P., Wijnker, G., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zúñiga, J.

Subjects
Physics - Geophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

An Acoustic Doppler Current Profiler (ADCP) was moored at the deep-sea site of the ANTARES neutrino telescope near Toulon, France, thus providing a unique opportunity to compare high-resolution acoustic and optical observations between 70 and 170 m above the sea bed at 2475 m. The ADCP measured downward vertical currents of magnitudes up to 0.03 m s-1 in late winter and early spring 2006. In the same period, observations were made of enhanced levels of acoustic reflection, interpreted as suspended particles including zooplankton, by a factor of about 10 and of horizontal currents reaching 0.35 m s-1. These observations coincided with high light levels detected by the telescope, interpreted as increased bioluminescence. During winter 2006 deep dense-water formation occurred in the Ligurian subbasin, thus providing a possible explanation for these observations. However, the 10-20 days quasi-periodic episodes of high levels of acoustic reflection, light and large vertical currents continuing into the summer are not direct evidence of this process. It is hypothesized that the main process allowing for suspended material to be moved vertically later in the year is local advection, linked with topographic boundary current instabilities along the rim of the 'Northern Current'., Comment: 30 pages, 7 figures

Published
2011
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4. Search for Neutrino Emission from Gamma-Ray Flaring Blazars with the ANTARES Telescope

Author

Adrián-Martínez, S., Samarai, I. Al, Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Astraatmadja, T., Aubert, J-J., Baret, B., Basa, S., Bertin, V., Biagi, S., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouhou, B., Bouwhuis, M. C., Brunner, J., Busto, J., Camarena, F., Capone, A., Cârloganu, C., Carminati, G., Carr, J., Cecchini, S., Charif, Z., Charvis, Ph., Chiarusi, T., Circella, M., Core, L., Costantini, H., Coyle, P., Creusot, A., Curtil, C., De Bonis, G., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Enzenhöfer, A., Ernenwein, J-P., Escoffier, S., Fehn, K., Fermani, P., Ferri, M., Ferry, S., Flaminio, V., Folger, F., Fritsch, U., Fuda, J-L., Galatà, S., Gay, P., Geyer, K., Giacomelli, G., Giordano, V., Gómez-González, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Hartman, J., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Herold, B., Hößl, J., Hsu, C. C., de Jong, M., Kadler, M., Kalekin, O., Kappes, A., Katz, U., Kavatsyuk, O., Kooijman, P., Kopper, C., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lambard, G., Larosa, G., Lattuada, D., Lefèvre, D., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Louis, F., Mangano, S., Marcelin, M., Margiotta, A., Martínez-Mora, J. A., Meli, A., Montaruli, T., Morganti, N., Moscoso, L., Motz, H., Neff, M., Nezri, E., Palioselitis, D., Păvălaş, G. E., Payet, K., Payre, P., Petrovic, J., Piattelli, P., Picot-Clemente, N., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Riccobene, G., Richardt, C., Richter, R., Rivière, C., Robert, A., Roensch, K., Rostovtsev, A., Ruiz-Rivas, J., Rujoiu, M., Russo, G. V., Salesa, F., Samtleben, D. F. E., Sapienza, P., Schöck, F., Schuller, J-P., Schüssler, F., Seitz, T., Shanidze, R., Simeone, F., Spies, A., Spurio, M., Steijger, J. M., Stolarczyk, Th., Sánchez-Losa, A., Taiuti, M., Tamburini, C., Toscano, S., Vallage, B., Vallée, C., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Visser, E., Wagner, S., Wijnker, G., Wilms, J., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The ANTARES telescope is well-suited to detect neutrinos produced in astrophysical transient sources as it can observe a full hemisphere of the sky at all times with a high duty cycle. Radio-loud active galactic nuclei with jets pointing almost directly towards the observer, the so-called blazars, are particularly attractive potential neutrino point sources. The all-sky monitor LAT on board the Fermi satellite probes the variability of any given gamma-ray bright blazar in the sky on time scales of hours to months. Assuming hadronic models, a strong correlation between the gamma-ray and the neutrino fluxes is expected. Selecting a narrow time window on the assumed neutrino production period can significantly reduce the background. An unbinned method based on the minimization of a likelihood ratio was applied to a subsample of data collected in 2008 (61 days live time). By searching for neutrinos during the high state periods of the AGN light curve, the sensitivity to these sources was improved by about a factor of two with respect to a standard time-integrated point source search. First results on the search for neutrinos associated with ten bright and variable Fermi sources are presented., Comment: Submitted to Astroparticle Physics 16 pages, 7 figures

Published
2011
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5. Measurement of the Group Velocity of Light in Sea Water at the ANTARES Site

Author

Adrián-Martínez, S., Samarai, I. Al, Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J-J., Baret, B., Basa, S., Bertin, V., Biagi, S., Bigi, A., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouhou, B., Bouwhuis, M. C., Brunner, J., Busto, J., Camarena, F., Capone, A., Carloganu, C., Carminati, G., Carr, J., Cecchini, S., Charif, Z., Charvis, Ph., Chiarusi, T., Circella, M., Costantini, H., Coyle, P., Curtil, C., De Bonis, G., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Enzenhöfer, A., Ernenwein, J-P., Escoffier, S., Fermani, P., Ferri, M., Flaminio, V., Folger, F., Fritsch, U., Fuda, J-L., Galatá, S., Gay, P., Geyer, K., Giacomelli, G., Giordano, V., Gómez-González, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Hartman, J., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Herold, B., Hößl, J., Hsu, C. C., de Jong, M., Kadler, M., Kalekin, O., Kappes, A., Katz, U., Kavatsyuk, O., Kooijman, P., Kopper, C., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamare, P., Larosa, G., Lattuada, D., Lefévre, D., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Mangano, S., Marcelin, M., Margiotta, A., Martínez-Mora, J. A., McMillan, J. E., Meli, A., Montaruli, T., Moscoso, L., Motz, H., Neff, M., Nezri, E., Palioselitis, D., Păvălaş, G. E., Payet, K., Payre, P., Petrovic, J., Piattelli, P., Picot-Clemente, N., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Riccobene, G., Richardt, C., Richter, R., Riviére, C., Robert, A., Roensch, K., Rostovtsev, A., Ruiz-Rivas, J., Rujoiu, M., Russo, G. V., Salesa, F., Samtleben, D. F. E., Sapienza, P., Schöck, F., Schuller, J-P., Schüssler, F., Seitz, T., Shanidze, R., Simeone, F., Spies, A., Spurio, M., Steijger, J. J. M., Stolarczyk, Th., Sánchez-Losa, A., Taiuti, M., Tamburini, C., Thompson, L. F., Toscano, S., Vallage, B., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Wagner, S., Wijnker, G., Wilms, J., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zúñiga, J.

Subjects
High Energy Physics - Experiment
Abstract

The group velocity of light has been measured at eight different wavelengths between 385 nm and 532 nm in the Mediterranean Sea at a depth of about 2.2 km with the ANTARES optical beacon systems. A parametrisation of the dependence of the refractive index on wavelength based on the salinity, pressure and temperature of the sea water at the ANTARES site is in good agreement with these measurements., Comment: 14 pages, 5 figures

Published
2011
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6. Search for Relativistic Magnetic Monopoles with the ANTARES Neutrino Telescope

Author

ANTARES Collaboration, Adrián-Martínez, S., Aguilar, J. A., Samarai, I. Al, Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J-J., Baret, B., Basa, S., Bertin, V., Biagi, S., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouhou, B., Bouwhuis, M. C., Brunner, J., Busto, J., Camarena, F., Capone, A., Cârloganu, C., Carminati, G., Carr, J., Cecchini, S., Charif, Z., Charvis, Ph., Chiarusi, T., Circella, M., Costantini, H., Coyle, P., Curtil, C., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Enzenhöfer, A., Ernenwein, J-P., Escoffier, S., Fermani, P., Ferri, M., Flaminio, V., Folger, F., Fritsch, U., Fuda, J-L., Galatà, S., Gay, P., Giacomelli, G., Giordano, V., Gómez-González, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Hartman, J., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Herold, B., Hößl, J., Hsu, C. C., de Jong, M., Kadler, M., Kalekin, O., Kappes, A., Katz, U., Kavatsyuk, O., Kooijman, P., Kopper, C., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamare, P., Larosa, G., Lattuada, D., Lefèvre, D., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Mangano, S., Marcelin, M., Margiotta, A., Martínez-Mora, J. A., Meli, A., Montaruli, T., Morganti, M., Moscoso, L., Motz, H., Neff, M., Nezri, E., Palioselitis, D., Păvălaş, G. E., Payet, K., Payre, P., Petrovic, J., Piattelli, P., Picot-Clemente, N., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Riccobene, G., Richardt, C., Richter, R., Rivière, C., Robert, A., Roensch, K., Rostovtsev, A., Ruiz-Rivas, J., Rujoiu, M., Russo, G. V., Salesa, F., Sapienza, P., Schöck, F., Schuller, J-P., Schüssler, F., Seitz, T., Shanidze, R., Simeone, F., Spies, A., Spurio, M., Steijger, J. J. M., Stolarczyk, Th., Sánchez-Losa, A., Taiuti, M., Tamburini, C., Toscano, S., Vallage, B., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Wagner, S., Wijnker, G., Wilms, J., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Magnetic monopoles are predicted in various unified gauge models and could be produced at intermediate mass scales. Their detection in a neutrino telescope is facilitated by the large amount of light emitted compared to that from muons. This paper reports on a search for upgoing relativistic magnetic monopoles with the ANTARES neutrino telescope using a data set of 116 days of live time taken from December 2007 to December 2008. The one observed event is consistent with the expected atmospheric neutrino and muon background, leading to a 90% C.L. upper limit on the monopole flux between 1.3E-17 and 8.9E-17 cm-2.s-1.sr-1 for monopoles with velocity beta greater than 0.625.

Published
2011
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7. First Search for Point Sources of High Energy Cosmic Neutrinos with the ANTARES Neutrino Telescope

Author

Antares Collaboration, Adrián-Martínez, S., Aguilar, J. A., Samarai, I. Al, Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J-J., Baret, B., Basa, S., Bertin, V., Biagi, S., Bigi, A., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouhou, B., Bouwhuis, M. C., Brunner, J., Busto, J., Camarena, F., Capone, A., Carloganu, C., Carminati, G., Carr, J., Cecchini, S., Charif, Z., Charvis, Ph., Chiarusi, T., Circella, M., Coniglione, R., Costantini, H., Coyle, P., Curtil, C., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Enzenhöfer, A., Ernenwein, J-P., Escoffier, S., Fermani, P., Ferri, M., Flaminio, V., Folger, F., Fritsch, U., Fuda, J-L., Galatà, S., Gay, P., Giacomelli, G., Giordano, V., Gómez-González, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Hartman, J., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Herold, B., Hößl, J., Hsu, C. C., de Jong, M., Kadler, M., Kalekin, O., Kappes, A., Katz, U., Kavatsyuk, O., Kooijman, P., Kopper, C., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamare, P., Larosa, G., Lattuada, D., Lefèvre, D., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Mangano, S., Marcelin, M., Margiotta, A., Martínez-Mora, J. A., Meli, A., Montaruli, T., Moscoso, L., Motz, H., Neff, M., Nezri, E., Palioselitis, D., Pavalas, G. E., Payet, K., Payre, P., Petrovic, J., Piattelli, P., Picot-Clemente, N., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Richardt, C., Richter, R., Rivière, C., Robert, A., Roensch, K., Rostovtsev, A., Ruiz-Rivas, J., Rujoiu, M., Russo, G. V., Salesa, F., Samtleben, D. F. E., Sapienza, P., Schöck, F., Schuller, J-P., Schüssler, F., Seitz, T., Shanidze, R., Simeone, F., Spies, A., Spurio, M., Steijger, J. J. M., Stolarczyk, Th., Sánchez-Losa, A., Taiuti, M., Tamburini, C., Toscano, S., Vallage, B., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Wagner, S., Wijnker, G., Wilms, J., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Results are presented of a search for cosmic sources of high energy neutrinos with the ANTARES neutrino telescope. The data were collected during 2007 and 2008 using detector configurations containing between 5 and 12 detection lines. The integrated live time of the analyzed data is 304 days. Muon tracks are reconstructed using a likelihood-based algorithm. Studies of the detector timing indicate a median angular resolution of 0.5 +/- 0.1 degrees. The neutrino flux sensitivity is 7.5 x 10-8 ~ (E/GeV)^-2 GeV^-1 s^-1 cm^-2 for the part of the sky that is always visible (declination < -48 degrees), which is better than limits obtained by previous experiments. No cosmic neutrino sources have been observed., Comment: 4 figures, submitted to ApJL

Published
2011
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8. A method for detection of muon induced electromagnetic showers with the ANTARES detector

Author

Aguilar, J. A., Samarai, I. Al., Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J. J., Baret, B., Basa, S., Bertin, V., Biagi, S., Bigi, A., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouhou, B., Bouwhuis, M. C., Brunner, J., Busto, J., Camarena, F., Capone, A., Carloganu, C., Carminati, G., Carr, J., Cecchini, S., Charif, Z., Charvis, P., Chiarusi, T., Circella, M., Coniglione, R., Costantini, H., Coyle, P., Curtil, C., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Enzenhöfer, A., Ernenwein, J. P., Escoffier, S., Fermani, P., Ferri, M., Flaminio, V., Folger, F., Fritsch, U., Fuda, J. L., Galatà, S., Gay, P., Giacomelli, G., Giordano, V., Gómez-González, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Hartman, J., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Herold, B., Hößl, J., Hsu, C. C., de Jong, M., Kadler, M., Kalekin, O., Kappes, A., Katz, U., Kavatsyuk, O., Kooijman, P., Kopper, C., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamare, P., Larosa, G., Lattuada, D., Lefèvre, D., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Mangano, S., Marcelin, M., Margiotta, A., Martinez-Mora, J. A., Meli, A., Montaruli, T., Moscoso, L., Motz, H., Neff, M., Nezri, E., Palioselitis, D., Păvălaş, G. E., Payet, K., Payre, P., Petrovic, J., Piattelli, P., Picot-Clemente, N., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Richardt, C., Richter, R., Rivière, C., Robert, A., Roensch, K., Rostovtsev, A., Ruiz-Rivas, J., Rujoiu, M., Russo, G. V., Salesa, F., Sapienza, P., Schöck, F., Schuller, J. P., Schüssler, F., Shanidze, R., Simeone, F., Spies, A., Spurio, M., Steijger, J. J. M., Stolarczyk, T., Sánchez-Losa, A., Taiuti, M., Tamburini, C., Toscano, S., Vallage, B., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Wijnker, G., Wilms, J., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

The primary aim of ANTARES is neutrino astronomy with upward going muons created in charged current muon neutrino interactions in the detector and its surroundings. Downward going muons are background for neutrino searches. These muons are the decay products of cosmic-ray collisions in the Earth's atmosphere far above the detector. This paper presents a method to identify and count electromagnetic showers induced along atmospheric muon tracks with the ANTARES detector. The method is applied to both cosmic muon data and simulations and its applicability to the reconstruction of muon event energies is demonstrated., Comment: 20 pages, 7 figures

Published
2011
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9. A Fast Algorithm for Muon Track Reconstruction and its Application to the ANTARES Neutrino Telescope

Author

ANTARES collaboration, Aguilar, J. A., Samarai, I. Al, Albert, A., Andre, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J-J., Auer, R., Baret, B., Basa, S., Bazzotti, M., Bertin, V., Biagi, S., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouwhuis, M. C., Brown, A. M., Brunner, J., Busto, J., Camarena, F., Capone, A., Carloganu, C., Carminati, G., Carr, J., Cecchini, S., Charvis, Ph., Chiarusi, T., Circella, M., Coniglione, R., Costantini, H., Cottini, N., Coyle, P., Curtil, C., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Ernenwein, J-P., Escoffier, S., Fehr, F., Flaminio, V., Fritsch, U., Fuda, J-L., Galata, S., Gay, P., Giacomelli, G., Gomez-Gonzalez, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Heijboer, A. J., Hello, Y., Hernandez-Rey, J. J., Herold, B., Hößl, J., Hsu, C. C., de Jong, M., Kadler, M., Kalantar-Nayestanaki, N., Kalekin, O., Kappes, A., Katz, U., Kooijman, P., Kopper, C., Kouchner, A., Kulikovskiy, V., Lahmann, R., Lamare, P., Larosa, G., Lefevre, D., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Lucarelli, F., Mangano, S., Marcelin, M., Margiotta, A., Martinez-Mora, J. A., Mazure, A., Meli, A., Montaruli, T., Morganti, M., Moscoso, L., Motz, H., Naumann, C., Neff, M., Palioselitis, D., Pavalas, G. E., Payre, P., Petrovic, J., Picot-Clemente, N., Picq, C., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Riccobene, G., Richardt, C., Richter, R., Rostovtsev, A., Rujoiu, M., Russo, G. V., Salesa, F., Sapienza, P., Schöck, F., Schuller, J-P., Shanidze, R., Simeone, F., Spiess, A., Spurio, M., Steijger, J. J. M., Stolarczyk, Th., Taiuti, M., Tamburini, C., Tasca, L., Toscano, S., Vallage, B., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Wijnker, G., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zuniga, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Experiment, Physics - Data Analysis, Statistics and Probability
Abstract

An algorithm is presented, that provides a fast and robust reconstruction of neutrino induced upward-going muons and a discrimination of these events from downward-going atmospheric muon background in data collected by the ANTARES neutrino telescope. The algorithm consists of a hit merging and hit selection procedure followed by fitting steps for a track hypothesis and a point-like light source. It is particularly well-suited for real time applications such as online monitoring and fast triggering of optical follow-up observations for multi-messenger studies. The performance of the algorithm is evaluated with Monte Carlo simulations and various distributions are compared with that obtained in ANTARES data.

Published
2011
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10. The ANTARES Telescope Neutrino Alert System

Author

Ageron, M., Aguilar, J. A., Samarai, I. Al, Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J-J., Baret, B., Basa, S., Bertin, V., Biagi, S., Bigi, A., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouhou, B., Bouwhuis, M. C., Brunner, J., Busto, J., Camarena, F., Capone, A., Cârloganu, C., Carminati, G., Carr, J., Cecchini, S., Charif, Z., Charvis, Ph., Chiarusi, T., Circella, M., Coniglione, R., Costantini, H., Coyle, P., Curtil, C., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Enzenöfer, A., Ernenwein, J-P., Escoffier, S., Fermani, P., Ferri, M., Flaminio, V., Folger, F., Fritsch, U., Fuda, J-L., Galatà, S., Gay, P., Giacomelli, G., Giordano, V., Gòmez-González, J., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Hartman, J., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Herold, B., Hößl, J., Hsu, C. C., de Jong, M., Kadler, M., Kalekin, O., Kappes, A., Katz, U., Kavatsyuk, O., Kooijman, P., Kopper, C., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamar, P., Larosa, G., Lattuada, D., Lefèvre, D., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Mangano, S., Marcelin, M., Margiotta, A., Martínez-Mora, J. A., Meli, A., Montaruli, T., Moscoso, L., Motz, H., Neff, M., Nezri, E., Palioselitis, D., Păvălaş, G. E., Payet, K., Payre, P., Petrovic, J., Piattelli, P., Picot-Clemente, N., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Richardt, C., Richter, R., Rivière, C., Robert, A., Roensch, K., Rostovtsev, A., Ruiz-Rivas, J., Rujoiu, M., Russo, G. V., Salesa, F., Sapienza, P., Schöck, F., Schuller, J-P., Schüssler, F., Shanidze, R., Simeone, F., Spies, A., Spuriol, M., Steijger, J. J. M., Stolarczyk, Th., Sànchez-Losa, A., Taiuti, M., Tamburini, C., Toscano, S., Vallage, B., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Wijnker, G., Wilms, J., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zùñiga, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

The ANTARES telescope has the capability to detect neutrinos produced in astrophysical transient sources. Potential sources include gamma-ray bursts, core collapse supernovae, and flaring active galactic nuclei. To enhance the sensitivity of ANTARES to such sources, a new detection method based on coincident observations of neutrinos and optical signals has been developed. A fast online muon track reconstruction is used to trigger a network of small automatic optical telescopes. Such alerts are generated for special events, such as two or more neutrinos, coincident in time and direction, or single neutrinos of very high energy., Comment: 17 pages, 9 figures submitted to Astroparticle Physics

Published
2011
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11. Time Calibration of the ANTARES Neutrino Telescope

Author

The ANTARES Collaboration, Aguilar, J. A., Samarai, I. Al, Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J. J., Auer, R., Baret, B., Basa, S., Bazzotti, M., Bertin, V., Biagi, S., Bigongiari, C., Bou-Cabo, M., Bouwhuis, M. C., Brown, A. M., Brunner, J., Busto, J., Camarena, F., Capone, A., Carloganu, C., Carminati, G., Carr, J., Cecchini, S., Charvis, Ph., Chiarusi, T., Circella, M., Costantini, H., Cottini, N., Coyle, P., Curtil, C., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., Emanuele, U., Ernenwein, J. P., Escoffier, S., Fehr, F., Flaminio, V., Fritsch, U., Fuda, J. L., Galata, S., Gay, P., Giacomelli, G., Gómez-González, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Herold, B., Hössl, J., Hsu, C. C., de Jong, M., Kadler, M., Kalantar-Nayestanaki, N., Kalekin, O., Kappes, A., Katz, U., Kooijman, P., Kopper, C., Kouchner, A., Kulikovskiy, V., Lahmann, R., Lamare, P., Larosa, G., Lefèvre, D., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Lucarelli, F., Mangano, S., Marcelin, M., Margiotta, A., Martinez-Mora, J. A., Mazure, A., Montaruli, T., Morganti, M., Moscoso, L., Motz, H., Naumann, C., Neff, M., Palioselitis, D., Pavalas, G. E., Payre, P., Petrovic, J., Piattelli, P., Picot-Clemente, N., Picq, C., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Riccobene, G., Richardt, C., Rujoiu, M., Russo, G. V., Salesa, F., Sapienza, P., Schöck, F., Schuller, J. P., Shanidze, R., Simeone, F., Spies, A., Spurio, M., Steijger, J. J. M., Stolarczyk, Th., Taiuti, M., Tamburini, C., Tasca, L., Toscano, S., Vallage, B., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Wijnker, G., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The ANTARES deep-sea neutrino telescope comprises a three-dimensional array of photomultipliers to detect the Cherenkov light induced by upgoing relativistic charged particles originating from neutrino interactions in the vicinity of the detector. The large scattering length of light in the deep sea facilitates an angular resolution of a few tenths of a degree for neutrino energies exceeding 10 TeV. In order to achieve this optimal performance, the time calibration procedures should ensure a relative time calibration between the photomultipliers at the level of about 1ns. The methods developed to attain this level of precision are described., Comment: 23 pages, 20 figures, accepted by Astropart. Phys

Published
2010
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12. Search for a diffuse flux of high-energy $\nu_\mu$ with the ANTARES neutrino telescope

Author

ANTARES Collaboration, Aguilar, J. A., Samarai, I. Al, Albert, A., André, M., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J-J., Auer, R., Baret, B., Basa, S., Bazzotti, M., Bertin, V., Biagi, S., Bigongiari, C., Bogazzi, C., Bou-Cabo, M., Bouwhuis, M. C., Brown, A. M., Brunner, J., Busto, J., Camarena, F., Capone, A., Carloganu, C., Carminati, G., Carr, J., Cecchini, S., Charvis, Ph., Chiarusi, T., Circella, M., Coniglione, R., Costantini, H., Cottini, N., Coyle, P., Curtil, C., Decowski, M. P., Dekeyser, I., Deschamps, A., Donzaud, C., Dornic, D., Dorosti, Q., Drouhin, D., Eberl, T., Emanuele, U., Ernenwein, J-P., Escoffier, S., Fehr, F., Flaminio, V., Folger, F., Fritsch, U., Fuda, J-L., Galata, S., Gay, P., Giacomelli, G., Gomez-Gonzalez, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Heijboer, A. J., Hello, Y., Hernandez-Rey, J. J., Herold, B., Hossl, J., Hsu, C. C., de Jong, M., Kadler, M., Kalantar-Nayestanaki, N., Kalekin, O., Kappes, A., Katz, U., Kooijman, P., Kopper, C., Kouchner, A., Kulikovskiy, V., Lahmann, R., Lamare, P., Larosa, G., Lefèvre, D., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Lucarelli, F., Mangano, S., Marcelin, M., Margiotta, A., Martinez-Mora, J. A., Mazure, A., Meli, A., Montaruli, T., Morganti, M., Moscoso, L., Motz, H., Naumann, C., Neff, M., Palioselitis, D., Pavalas, G. E., Payre, P., Petrovic, J., Piattelli, P., Picot-Clemente, N., Picq, C., Popa, V., Pradier, T., Presani, E., Racca, C., Reed, C., Riccobene, G., Richardt, C., Roensch, K., Rostovtsev, A., Rujoiu, M., Russo, G. V., Salesa, F., Sapienza, P., Schock, F., Schuller, J-P., Shanidze, R., Simeone, F., Spies, A., Spurio, M., Steijger, J. J. M., Stolarczyk, Th., Taiuti, M., Tamburini, C., Tasca, L., Toscano, S., Vallage, B., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Wijnker, G., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zuniga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

A search for a diffuse flux of astrophysical muon neutrinos, using data collected by the ANTARES neutrino telescope is presented. A $(0.83\times 2\pi)$ sr sky was monitored for a total of 334 days of equivalent live time. The searched signal corresponds to an excess of events, produced by astrophysical sources, over the expected atmospheric neutrino background. The observed number of events is found compatible with the background expectation. Assuming an $E^{-2}$ flux spectrum, a 90% c.l. upper limit on the diffuse $\nu_\mu$ flux of $E^2\Phi_{90%} = 5.3 \times 10^{-8} \ \mathrm{GeV\ cm^{-2}\ s^{-1}\ sr^{-1}} $ in the energy range 20 TeV - 2.5 PeV is obtained. Other signal models with different energy spectra are also tested and some rejected., Comment: 14 pages, 6 figures

Published
2010
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13. AMADEUS - The Acoustic Neutrino Detection Test System of the ANTARES Deep-Sea Neutrino Telescope

Author

ANTARES collaboration, Aguilar, J. A., Samarai, I. Al, Albert, A., Anghinolfi, M., Anton, G., Anvar, S., Ardid, M., Jesus, A. C. Assis, Astraatmadja, T., Aubert, J. -J., Auer, R., Barbarito, E., Baret, B., Basa, S., Bazzotti, M., Bertin, V., Biagi, S., Bigongiari, C., Bou-Cabo, M., Bouwhuis, M. C., Brown, A., Brunner, J., Busto, J., Camarena, F., Capone, A., Cârloganu, C., Carminati, G., Carr, J., Cassano, B., Castorina, E., Cavasinni, V., Cecchini, S., Ceres, A., Charvis, Ph., Chiarusi, T., Sen, N. Chon, Circella, M., Coniglione, R., Costantini, H., Cottini, N., Coyle, P., Curtil, C., De Bonis, G., Decowski, M. P., Dekeyser, I., Deschamps, A., Distefano, C., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., Emanuele, U., Ernenwein, J. -P., Escoffier, S., Fehr, F., Fiorello, C., Flaminio, V., Fritsch, U., Fuda, J. -L., Gay, P., Giacomelli, G., Gómez-González, J. P., Graf, K., Guillard, G., Halladjian, G., Hallewell, G., van Haren, H., Heijboer, A. J., Heine, E., Hello, Y., Hernández-Rey, J. J., Herold, B., Hößl, J., de Jong, M., Kalantar-Nayestanaki, N., Kalekin, O., Kappes, A., Katz, U., Keller, P., Kooijman, P., Kopper, C., Kouchner, A., Kretschmer, W., Lahmann, R., Lamare, P., Lambard, G., Larosa, G., Laschinsky, H., Provost, H. Le, Lefèvre, D., Lelaizant, G., Lim, G., Presti, D. Lo, Loehner, H., Loucatos, S., Louis, F., Lucarelli, F., Mangano, S., Marcelin, M., Margiotta, A., Martinez-Mora, J. A., Mazure, A., Mongelli, M., Montaruli, T., Morganti, M., Moscoso, L., Motz, H., Naumann, C., Neff, M., Ostasch, R., Palioselitis, D., Pavalas, G. E., Payre, P., Petrovic, J., Picot-Clemente, N., Picq, C., Popa, V., Pradier, T., Presani, E., Racca, C., Radu, A., Reed, C., Riccobene, G., Richardt, C., Rujoiu, M., Ruppi, M., Russo, G. V., Salesa, F., Sapienza, P., Schöck, F., Schuller, J. -P., Shanidze, R., Simeone, F., Spurio, M., Steijger, J. J. M., Stolarczyk, Th., Taiuti, M., Tamburini, C., Tasca, L., Toscano, S., Vallage, B., Van Elewyck, V., Vannoni, G., Vecchi, M., Vernin, P., Wijnker, G., de Wolf, E., Yepes, H., Zaborov, D., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The AMADEUS (ANTARES Modules for the Acoustic Detection Under the Sea) system which is described in this article aims at the investigation of techniques for acoustic detection of neutrinos in the deep sea. It is integrated into the ANTARES neutrino telescope in the Mediterranean Sea. Its acoustic sensors, installed at water depths between 2050 and 2300 m, employ piezo-electric elements for the broad-band recording of signals with frequencies ranging up to 125 kHz. The typical sensitivity of the sensors is around -145 dB re 1V/muPa (including preamplifier). Completed in May 2008, AMADEUS consists of six "acoustic clusters", each comprising six acoustic sensors that are arranged at distances of roughly 1 m from each other. Two vertical mechanical structures (so-called lines) of the ANTARES detector host three acoustic clusters each. Spacings between the clusters range from 14.5 to 340 m. Each cluster contains custom-designed electronics boards to amplify and digitise the acoustic signals from the sensors. An on-shore computer cluster is used to process and filter the data stream and store the selected events. The daily volume of recorded data is about 10 GB. The system is operating continuously and automatically, requiring only little human intervention. AMADEUS allows for extensive studies of both transient signals and ambient noise in the deep sea, as well as signal correlations on several length scales and localisation of acoustic point sources. Thus the system is excellently suited to assess the background conditions for the measurement of the bipolar pulses expected to originate from neutrino interactions., Comment: 36 pages, 19 figures; v3: Line numbers removed (no changes to text)

Published
2010
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14. Search for neutral Higgs bosons decaying into four taus at LEP2

Author

ALEPH Collaboration, Schael, S., Barate, R., Brunelière, R., De Bonis, I., Decamp, D., Goy, C., Jézéquel, S., Lees, J. -P., Martin, F., Merle, E., Minard, M. -N., Pietrzyk, B., Bravo, B. Trocmé S., Casado, M. P., Chmeissani, M., Crespo, J. M., Fernandez, E., Fernandez-Bosman, M., Garrido, Ll., Martinez, M., Pacheco, A., Ruiz, H., Colaleo, A., Creanza, D., De Filippis, N., de Palma, M., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Tricomi, A., Huang, G. Zito X., Lin, J., Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Barklow, T., Buchmüller, O., Cattaneo, M., Clerbaux, B., Drevermann, H., Forty, R. W., Frank, M., Gianotti, F., Hansen, J. B., Harvey, J., Hutchcroft, D. E., Janot, P., Jost, B., Kado, M., Mato, P., Moutoussi, A., Ranjard, F., Rolandi, L., Schlatter, D., Teubert, F., Valassi, A., Monteil, I. Videau S., Pallin, D., Pascolo, J. M., Perret, P., Hansen, J. D., Hansen, J. R., Hansen, P. H., Kraan, A. C., Kyriakis, B. S. Nilsson A., Markou, C., Simopoulou, E., Vayaki, A., Blondel, K. Zachariadou A., Brient, J. -C., Machefert, F., Rougé, A., Videau, H., Ciulli, V., Focardi, E., Parrini, G., Antonelli, A., Antonelli, M., Bencivenni, G., Bossi, F., Capon, G., Cerutti, F., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, G. P., Passalacqua, L., Kennedy, J., Lynch, J. G., Negus, P., O'Shea, V., Thompson, A. S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E. E., Putzer, A., Stenzel, H., Tittel, K., Wunsch, M., Beuselinck, R., Cameron, W., Davies, G., Dornan, P. J., Girone, M., Marinelli, N., Nowell, J., Rutherford, S. A., Sedgbeer, J. K., Thompson, J. C., White, R., Ghete, V. M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Bouhova-Thacker, E., Bowdery, C. K., Clarke, D. P., Ellis, G., Finch, A. J., Foster, F., Hughes, G., Jones, R. W. L., Pearson, M. R., Robertson, N. A., Sloan, T., Smizanska, M., van der Aa, O., Delaere, C., Leibenguth, G., Blumenschein, V. Lemaitre U., Hölldorfer, F., Jakobs, K., Kayser, F., Müller, A. -S., Renk, B., Sander, H. -G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Bonissent, T. Ziegler A., Coyle, P., Curtil, C., Ealet, A., Fouchez, D., Payre, P., Tilquin, A., Ragusa, F., David, A., Dietl, H., Ganis, G., Hüttmann, K., Lütjens, G., Moser, W. Männer H. -G., Settles, R., Villegas, M., Wolf, G., Beacham, J., Yavin, K. Cranmer I., Boucrot, J., Callot, O., Davier, M., Duflot, L., Grivaz, J. -F., Heusse, Ph., Jacholkowska, A., Serin, L., Veille, J. -J., Azzurri, P., Bagliesi, G., Boccali, T., Foà, L., Giammanco, A., Giassi, A., Ligabue, F., Messineo, A., Palla, F., Sanguinetti, G., Sciabà, A., Sguazzoni, G., Spagnolo, P., Tenchini, R., Venturi, A., Awunor, P. G. Verdini O., Blair, G. A., Cowan, G., Garcia-Bellido, A., Green, M. G., Medcalf, T., Misiejuk, A., Strong, J. A., Teixeira-Dias, P., Clifft, R. W., Edgecock, T. R., Norton, P. R., Tomalin, I. R., Bloch-Devaux, J. J. Ward B., Boumediene, D., Colas, P., Fabbro, B., Lançon, E., Lemaire, M. -C., Locci, E., Perez, P., Rander, J., Tuchming, B., Vallage, B., Litke, A. M., Taylor, G., Booth, C. N., Cartwright, S., Combley, F., Hodgson, P. N., Lehto, M., Thompson, L. F., Böhrer, A., Brandt, S., Grupen, C., Hess, J., Ngac, A., Borean, G. Prange C., Giannini, G., He, H., Putz, J., Rothberg, J., Armstrong, S. R., Berkelman, K., Ferguson, D. P. S., Gao, Y., González, S., Hayes, O. J., Hu, H., Jin, S., Kile, J., McNamara III, P. A., Nielsen, J., Pan, Y. B., von Wimmersperg-Toeller, J. H., Wiedenmann, W., Wu, J., Wu, Sau Lan, Wu, X., Zobernig, G., and Dissertori, G.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

A search for the production and non-standard decay of a Higgs boson, h, into four taus through intermediate pseudoscalars, a, is conducted on 683 pb-1 of data collected by the ALEPH experiment at centre-of-mass energies from 183 to 209 GeV. No excess of events above background is observed, and exclusion limits are placed on the combined production cross section times branching ratio, \xi^2 = \sigma(e+e- --> Zh)/\sigma_{SM}(e+e- --> Zh) x B(h --> aa)x B(a --> \tau^+\tau^-)^2. For mh < 107 GeV/c2 and 4 < ma < 10 GeV/c2, \xi^2 > 1 is excluded at the 95% confidence level., Comment: 18 pages, 16 figures

Published
2010
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