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1. Observation of nu_tau appearance in the CNGS beam with the OPERA experiment

Author

OPERA Collaboration, Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Asada, T., Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Buonaura, A., Buontempo, S., Buttne, B., Chernyavsky, M., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. Del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Fini, R. A., Fukuda, T., Galati, G., Garfagnini, A., Giacomelli, G., Goellnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Guler, M., Gustavino, C., Hagner, C., Hara, T., Hayakawa, T., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Katsuragawa, T., Kawada, J., Kawahara, H., Kim, J. H., Kim, S. H., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malenica, M., Malgin, A., Mandrioli, G., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Meyer, M., Mikado, S., Miyanishi, M., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. D., Park, I. G., Pasqualini, L., Pastore, A., Patrizii, L., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pupilli, F., Roda, M., Roganova, T., Rokujo, H., Rosa, G., Ryazhskaya, O., Sato, O., Schembri, A., Shakiryanova, I., Shchedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Umemoto, A., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yoon, C. S., Yaguchi, I., Yoshimoto, M., Zemskova, S., and Zghiche, A.

Subjects
High Energy Physics - Experiment
Abstract

The OPERA experiment is searching for nu_mu -> nu_tau oscillations in appearance mode i.e. via the direct detection of tau leptons in nu_tau charged current interactions. The evidence of nu_mu -> nu_tau appearance has been previously reported with three nu_tau candidate events using a sub-sample of data from the 2008-2012 runs. We report here a fourth nu_tau candidate event, with the tau decaying into a hadron, found after adding the 2012 run events without any muon in the final state to the data sample. Given the number of analysed events and the low background, nu_mu -> nu_tau oscillations are established with a significance of 4.2sigma., Comment: Submitted to Progress of Theoretical and Experimental Physics (PTEP)

Published
2014
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2. Determination of the muon charge sign with the dipolar spectrometers of the OPERA experiment

Author

OPERA Collaboration, Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Buonaura, A., Buontempo, S., Büttner, B., Chernyavsky, M., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. Del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Fini, R. A., Fukuda, T., Galati, G., Garfagnini, A., Giacomelli, G., Goellnitz, C., Goldberg, J., Goloubkov, D., Gornushkin, Y., Grella, G., Guler, M., Gustavino, C., Hagner, C., Hara, T., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Kawada, J., Kim, J. H., Kim, S. H., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Malenica, M., Mandrioli, G., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Meyer, M., Mikado, S., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. D., Park, I. G., Pasqualini, L., Pastore, A., Patrizii, L., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pupilli, F., Roda, M., Rokujo, H., Roganova, T., Rosa, G., Rostovtseva, I., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Shakiryanova, I., Shchedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yoon, C. S., Zaitsev, Y., Zemskova, S., and Zghiche, A.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The OPERA long-baseline neutrino-oscillation experiment has observed the direct appearance of $\nu_\tau$ in the CNGS $\nu_\mu$ beam. Two large muon magnetic spectrometers are used to identify muons produced in the $\tau$ leptonic decay and in $\nu_\mu^{CC}$ interactions by measuring their charge and momentum. Besides the kinematic analysis of the $\tau$ decays, background resulting from the decay of charmed particles produced in $\nu_\mu^{CC}$ interactions is reduced by efficiently identifying the muon track. A new method for the charge sign determination has been applied, via a weighted angular matching of the straight track-segments reconstructed in the different parts of the dipole magnets. Results obtained for Monte Carlo and real data are presented. Comparison with a method where no matching is used shows a significant reduction of up to 40\% of the fraction of wrongly determined charges., Comment: 10 pages. Improvements in the text

Published
2014

3. Procedure for short-lived particle detection in the OPERA experiment and its application to charm decays

Author

Agafonova, N., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Buonaura, A., Buontempo, S., Buttner, B., Chernyavsky, M., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. Del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Fini, R. A., Fukuda, T., Galati, G., Garfagnini, A., Giacomelli, G., Gollnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Guler, M., Gustavino, C., Hagner, C., Hara, T., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Kawada, J., Kim, J. H., Kim, S. H., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Malenica, M., Mandrioli, G., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Mikado, S., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. D., Park, I. G., Pasqualini, L., Pastore, A., Patrizii, L., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pupilli, F., Roda, M., Rokujo, H., Roganova, T., Rosa, G., Ryazhskaya, O., Sato, O., Schembri, A., Shakiryanova, I., Shchedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strauss, T., Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yoon, C. S., Zemskova, S., and Zghiche, A.

Subjects
High Energy Physics - Experiment
Abstract

The OPERA experiment, designed to perform the first observation of $\nu_\mu \rightarrow \nu_\tau$ oscillations in appearance mode through the detection of the $\tau$ leptons produced in $\nu_\tau$ charged current interactions, has collected data from 2008 to 2012. In the present paper, the procedure developed to detect $\tau$ particle decays, occurring over distances of the order of 1 mm from the neutrino interaction point, is described in detail. The results of its application to the search for charmed hadrons are then presented as a validation of the methods for $\nu_\tau$ appearance detection.

Published
2014
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4. Measurement of TeV atmospheric muon charge ratio with the full OPERA data

Author

Agafonova, N., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Buonaura, A., Buontempo, S., Buettner, B., Chernyavsky, M., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. Del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Fini, R. A., Fukuda, T., Galati, G., Garfagnini, A., Giacomelli, G., Goellnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Guler, M., Gustavino, C., Hagner, C., Hara, T., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Kawada, J., Kim, J. H., Kim, S. H., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Malenica, M., Mandrioli, G., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Mikado, S., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. D., Park, I. G., Pasqualini, L., Pastore, A., Patrizii, L., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pupilli, F., Roda, M., Rokujo, H., Roganova, T., Rosa, G., Ryazhskaya, O., Sato, O., Schembri, A., Shakiryanova, I., Shchedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yoon, C. S., Zemskova, S., and Zghiche, A.

Subjects
High Energy Physics - Experiment
Abstract

The OPERA detector, designed to search for $\nu_{\mu} \to \nu_{\tau}$ oscillations in the CNGS beam, is located in the underground Gran Sasso laboratory, a privileged location to study TeV-scale cosmic rays. For the analysis here presented, the detector was used to measure the atmospheric muon charge ratio in the TeV region. OPERA collected charge-separated cosmic ray data between 2008 and 2012. More than 3 million atmospheric muon events were detected and reconstructed, among which about 110000 multiple muon bundles. The charge ratio $R_{\mu} \equiv N_{\mu^+}/N_{\mu^-}$ was measured separately for single and for multiple muon events. The analysis exploited the inversion of the magnet polarity which was performed on purpose during the 2012 Run. The combination of the two data sets with opposite magnet polarities allowed minimizing systematic uncertainties and reaching an accurate determination of the muon charge ratio. Data were fitted to obtain relevant parameters on the composition of primary cosmic rays and the associated kaon production in the forward fragmentation region. In the surface energy range 1-20 TeV investigated by OPERA, $R_{\mu}$ is well described by a parametric model including only pion and kaon contributions to the muon flux, showing no significant contribution of the prompt component. The energy independence supports the validity of Feynman scaling in the fragmentation region up to $200$ TeV/nucleon primary energy., Comment: 8 pages, 2 figures, 4 tables

Published
2014
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5. Evidence for $\nu_\mu \to \nu_\tau$ appearance in the CNGS neutrino beam with the OPERA experiment

Author

Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Asada, T., Autiero, D., Dhahbi, A. Ben, Badertscher, A., Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Brunet, F., Brunetti, G., Buonaura, A., Buontempo, S., Buettner, B., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. Del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Favier, J., Ferber, T., Ferone, G., Fini, R. A., Fukuda, T., Galati, G., Garfagnini, A., Giacomelli, G., Goellnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gustavino, C., Hagner, C., Hakamata, K., Hara, T., Hayakawa, T., Hierholzer, M., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Ishikawa, M., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Katsuragawa, T., Kawada, J., Kawahara, H., Kim, J. H., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Migliozzi, P., Mikado, S., Miyanishi, M., Miyashita, E., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roda, M., Rokujo, H., Roganova, T., Rosa, G., Rostovtseva, I., Rubbia, A., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Schmidt-Parzefal, W., Shakiryanova, I., Shchedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yoon, C. S., Yoshida, J., Yoshimoto, M., Zaitsev, Y., Zemskova, S., and Zghiche, A.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The OPERA experiment is designed to search for $\nu_{\mu} \rightarrow \nu_{\tau}$ oscillations in appearance mode i.e. through the direct observation of the $\tau$ lepton in $\nu_{\tau}$ charged current interactions. The experiment has taken data for five years, since 2008, with the CERN Neutrino to Gran Sasso beam. Previously, two $\nu_{\tau}$ candidates with a $\tau$ decaying into hadrons were observed in a sub-sample of data of the 2008-2011 runs. Here we report the observation of a third $\nu_\tau$ candidate in the $\tau^-\to\mu^-$ decay channel coming from the analysis of a sub-sample of the 2012 run. Taking into account the estimated background, the absence of $\nu_{\mu} \rightarrow \nu_{\tau}$ oscillations is excluded at the 3.4 $\sigma$ level., Comment: 9 pages, 5 figures, 1 tables

Published
2014
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6. New results on $\nu_\mu \to \nu_\tau$ appearance with the OPERA experiment in the CNGS beam

Author

OPERA Collaboration, Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Asada, T., Autiero, D., Badertscher, A., Dhahbi, A. Ben, Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Brunetti, G., Buettner, B., Buontempo, S., Chaussard, L., Chernyavskiy, M., Chiarella, V., Chukanov, A., Consiglio, L., D'Ambrosio, N., Sanchez, P. Del Amo, De Lellis, G., De Serio, M., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Ebert, J., Ereditato, A., Favier, J., Ferber, T., Fini, R. A., Fukuda, T., Garfagnini, A., Giacomelli, G., Goellnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Grianti, F., Guler, A. M., Gustavino, C., Hagner, C., Hakamata, K., Hara, T., Hayakawa, T., Hierholzer, M., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Ishikawa, M., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Katsuragawa, T., Kawahara, H., Kawada, J., Kim, J. H., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Migliozzi, P., Mikado, S., Minotti, A., Miyanishi, M., Miyashita, E., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roda, M., Roganova, T., Rokujo, H., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Schmidt-Parzefall, W., Shakiryanova, I., Schcedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tolun, P., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yoon, C. S., Yoshida, J., Yoshimoto, M., Zaitsev, Y., Zemskova, S., and Zghiche, A.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The OPERA neutrino experiment is designed to perform the first observation of neutrino oscillations in direct appearance mode in the $\nu_\mu \to \nu_\tau$ channel, via the detection of the $\tau$-leptons created in charged current $\nu_\tau$ interactions. The detector, located in the underground Gran Sasso Laboratory, consists of an emulsion/lead target with an average mass of about 1.2 kt, complemented by electronic detectors. It is exposed to the CERN Neutrinos to Gran Sasso beam, with a baseline of 730 km and a mean energy of 17 GeV. The observation of the first $\nu_\tau$ candidate event and the analysis of the 2008-2009 neutrino sample have been reported in previous publications. This work describes substantial improvements in the analysis and in the evaluation of the detection efficiencies and backgrounds using new simulation tools. The analysis is extended to a sub-sample of 2010 and 2011 data, resulting from an electronic detector-based pre-selection, in which an additional $\nu_\tau$ candidate has been observed. The significance of the two events in terms of a $\nu_\mu \to \nu_\tau$ oscillation signal is of 2.40 $\sigma$., Comment: 33 pages, 12 figures, 5 tables. Prepared for submission to JHEP

Published
2013

7. Search for $\nu_\mu \rightarrow \nu_e$ oscillations with the OPERA experiment in the CNGS beam

Author

OPERA collaboration, Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Dhahbi, A. Ben, Bertolin, A., Bozza, C., Brugnera, R., Brunet, F., Brunetti, G., Buettner, B., Buontempo, S., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Ferber, T., Fini, R. A., Fukuda, T., Garfagnini, A., Giacomelli, G., Goellnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Grianti, F., Guler, A. M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Juget, F., Kamiscioglu, C., Kamiscioglu, M., Kawada, J., Kim, J. H., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Mancini-Terracciano, C., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F. W., Meregaglia, A., Migliozzi, P., Mikado, S., Minotti, A., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Niwa, K., Ogawa, S., Okateva, N., Olchevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roda, M., Roganova, T., Rokujo, H., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Sato, O., Sato, Y., Schchedrina, T., Schembri, A., Schmidt-Parzefall, W., Shakiryanova, I., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tolun, P., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. -L., Wilquet, G., Wonsak, B., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., and Zghiche, A.

Subjects
High Energy Physics - Experiment
Abstract

A first result of the search for \numu $\rightarrow$ \nue oscillations in the OPERA experiment, located at the Gran Sasso Underground Laboratory, is presented. The experiment looked for the appearance of \nue in the CNGS neutrino beam using the data collected in 2008 and 2009. Data are compatible with the non-oscillation hypothesis in the three-flavour mixing model. A further analysis of the same data constrains the non-standard oscillation parameters $\theta_{new}$ and $\Delta m^2_{new}$ suggested by the LSND and MiniBooNE experiments. For large $\Delta m^{2}_{new}$ values ($>$0.1 eV$^{2}$), the OPERA 90% C.L. upper limit on sin$^{2}(2\theta_{new})$ based on a Bayesian statistical method reaches the value $7.2 \times 10^{-3}$.

Published
2013

8. Measurement of the neutrino velocity with the OPERA detector in the CNGS beam using the 2012 dedicated data

Author

The OPERA Collaboration, Adam, T., Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Dhahbi, A. Ben, Beretta, M., Bertolin, A., Bozza, C., Brugière, T., Brugnera, R., Brunet, F., Brunetti, G., Buettner, B., Buontempo, S., Carlus, B., Cavanna, F., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Esposito, L. S., Favier, J., Felici, G., Ferber, T., Fini, R. A., Fukuda, T., Garfagnini, A., Giacomelli, G., Girerd, C., Goellnitz, C., Goldberg, J., Golubkov, D., Gornushkin, Y., Grella, G., Grianti, F., Guerin, C., Guler, A. M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hollnagel, A., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Kawada, J., Kim, J. H., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Mancini-Terracciano, C., Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Migliozzi, P., Mikado, S., Monacelli, P., Montesi, M. C., Morishima, K., Moser, U., Muciaccia, M. T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Ogawa, S., Olchevsky, A., Ozaki, K., Palamara, O., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roda, M., Roganova, T., Rokujo, H., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Schmidt-Parzefall, W., Schuler, J., Shakiryanova, I., Sheshukov, A., Shibuya, H., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strauss, T., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tolun, P., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Wurtz, J., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

In spring 2012 CERN provided two weeks of a short bunch proton beam dedicated to the neutrino velocity measurement over a distance of 730 km. The OPERA neutrino experiment at the underground Gran Sasso Laboratory used an upgraded setup compared to the 2011 measurements, improving the measurement time accuracy. An independent timing system based on the Resistive Plate Chambers was exploited providing a time accuracy of $\sim$1 ns. Neutrino and anti-neutrino contributions were separated using the information provided by the OPERA magnetic spectrometers. The new analysis profited from the precision geodesy measurements of the neutrino baseline and of the CNGS/LNGS clock synchronization. The neutrino arrival time with respect to the one computed assuming the speed of light in vacuum is found to be $\delta t_\nu \equiv TOF_c - TOF_\nu= (0.6 \pm 0.4\ (stat.) \pm 3.0\ (syst.))$ ns and $\delta t_{\bar{\nu}} \equiv TOF_c - TOF_{\bar{\nu}} = (1.7 \pm 1.4\ (stat.) \pm 3.1\ (syst.))$ ns for $\nu_{\mu}$ and $\bar{\nu}_{\mu}$, respectively. This corresponds to a limit on the muon neutrino velocity with respect to the speed of light of $-1.8 \times 10^{-6} < (v_{\nu}-c)/c < 2.3 \times 10^{-6}$ at 90% C.L. This new measurement confirms with higher accuracy the revised OPERA result., Comment: 14 pages, 4 figures

Published
2012
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9. Determination of a time-shift in the OPERA set-up using high energy horizontal muons in the LVD and OPERA detectors

Author

Agafonova, N. Yu., Antonioli, P., Ashikhmin, V. V., Bari, G., Bressan, E., Evans, L., Garbini, M., Giusti, P., Malguin, A. S., Persiani, R., Ryasny, V. G., Ryazhskaya, O. G., Sartorelli, G., Scapparone, E., Selvi, M., Shakirianova, I. R., Votano, L., Wenninger, H., Yakushev, V. F., Zichichi, A., Agafonova, N., Alexandrov, A., Bertolin, A., Brugnera, R., Buttner, B., Chiarella, V., Chukanov, A., D'Ambrosio, N., De Lellis, G., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Dusini, S., Ebert, J., Ereditato, A., Ferber, T., Fini, R. A., Garfagnini, A., Giacomelli, G., Göllnitz, C., Gornushkin, Y., Grianti, F., Gustavino, C., Hagner, C., Hierholzer, M., Hollnagel, A., Jakovcic, K., Jollet-Meregaglia, C., Klicek, B., Kose, U., Lenkeit, J., Ljubicic, A., Longhin, A., Malgin, A., Mandrioli, G., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Muciaccia, M. T., Naumov, D., Olshevsky, A., Paoloni, A., Pastore, A., Patrizii, L., Pozzato, M., Pupilli, F., Rosa, G., Rostovtseva, I., Russo, A., Ryazhskaya, O., Schembri, A., Shakirianova, I., Sheshukov, A., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Stipcevic, M., Tenti, M., Terranova, F., Tioukov, V., Wonsak, B., Yakushev, V., Zaitsev, Y., and Zemskova, S.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology, Physics - Instrumentation and Detectors
Abstract

The purpose of this work is to report the measurement of a time-shift in the OPERA set-up in a totally independent way from Time Of Flight (TOF) measurements of CNGS neutrino events. The LVD and OPERA experiments are both installed in the same laboratory: LNGS. The relative position of the two detectors, separated by an average distance of ~ 160 m, allows the use of very high energy horizontal muons to cross-calibrate the timing systems of the two detectors, using a TOF technique which is totally independent from TOF of CNGS neutrino events. Indeed, the OPERA-LVD direction lies along the so-called "Teramo anomaly", a region in the Gran Sasso massif where LVD has established, many years ago, the existence of an anomaly in the mountain structure, which exhibits a low m. w. e. thickness for horizontal directions. The "abundant" high-energy horizontal muons (nearly 100 per year) going through LVD and OPERA exist because of this anomaly in the mountain orography. The total live time of the data in coincidence correspond to 1200 days from mid 2007 until March 2012. The time coincidence study of LVD and OPERA detectors is based on 306 cosmic horizontal muon events and shows the existence of a negative time shift in the OPERA set-up of the order of deltaT(AB) = - (73 \pm 9) ns when two calendar periods, A and B, are compared. This result shows a systematic effect in the OPERA timing system from August 2008 until December 2011. The size of the effect is comparable with the neutrino velocity excess recently measured by OPERA. It is probably interesting not to forget that with the MRPC technology developed by the ALICE Bologna group the TOF world record accuracy of 20 ps was reached. That technology can be implemented at LNGS for a high precision determination of TOF with the CNGS neutrino beams of an order of magnitude smaller than the value of the OPERA systematic effect.

Published
2012

10. Measurement of the neutrino velocity with the OPERA detector in the CNGS beam

Author

The OPERA Collaboration, Adam, T., Agafonova, N., Aleksandrov, A., Altinok, O., Sanchez, P. Alvarez, Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Dhahbi, A. Ben, Bertolin, A., Bozza, C., Brugiere, T., Brugnera, R., Brunet, F., Brunetti, G., Buontempo, S., Carlus, B., Cavanna, F., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., Colosimo, G., Crespi, M., D'Ambrosio, N., De Lellis, G., De Serio, M., Declais, Y., Sanchez, P. del Amo, Di Capua, F., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Efthymiopoulos, I., Egorov, O., Ereditato, A., Esposito, L. S., Favier, J., Ferber, T., Fini, R. A., Fukuda, T., Garfagnini, A., Giacomelli, G., Giorgini, M., Giovannozzi, M., Girerd, C., Goldberg, J., Gollnitz, C., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Gschwendtner, E., Guerin, C., Guler, A. M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Enikeev, R., Hierholzer, M., Hollnagel, A., Ieva, M., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Jones, M., Juget, F., Kamiscioglu, M., Kawada, J., Kim, S. H., Kimura, M., Kiritsis, E., Kitagawa, N., Klicek, B., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Mazzoni, A., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Missiaen, D., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Nitti, F., Ogawa, S., Okateva, N., Olchevsky, A., Palamara, O., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Riguzzi, F., Roganova, T., Rokujo, H., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sato, O., Sato, Y., Sahnoun, Z., Schembri, A., Schuler, J., Lavina, L. Scotto, Serrano, J., Shakiryanova, I., Sheshukov, A., Shibuya, H., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S., Stipcevic, M., Strauss, T., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Tran, N. T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. -L., Wilquet, G., Wonsak, B., Wurtz, J., Yakushev, V., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., and Zghiche, A.

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

The OPERA neutrino experiment at the underground Gran Sasso Laboratory has measured the velocity of neutrinos from the CERN CNGS beam over a baseline of about 730 km. The measurement is based on data taken by OPERA in the years 2009, 2010 and 2011. Dedicated upgrades of the CNGS timing system and of the OPERA detector, as well as a high precision geodesy campaign for the measurement of the neutrino baseline, allowed reaching comparable systematic and statistical accuracies. An arrival time of CNGS muon neutrinos with respect to the one computed assuming the speed of light in vacuum of (6.5 +/- 7.4(stat.)((+8.3)(-8.0)sys.))ns was measured corresponding to a relative difference of the muon neutrino velocity with respect to the speed of light (v-c)/c =(2.7 +/-3.1(stat.)((+3.4)(-3.3)(sys.))x10^(-6). The above result, obtained by comparing the time distributions of neutrino interactions and of protons hitting the CNGS target in 10.5 microseconds long extractions, was confirmed by a test performed at the end of 2011 using a short bunch beam allowing to measure the neutrino time of flight at the single interaction level., Comment: 34 pages, 22 figures This version replaces all previous ones

Published
2011
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11. Measurement of the atmospheric muon charge ratio with the OPERA detector

Author

OPERA Collaboration, Agafonova, N., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Bagulya, A., Bertolin, A., Besnier, M., Bick, D., Boyarkin, V., Bozza, C., Brugière, T., Brugnera, R., Brunetti, G., Buontempo, S., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Cozzi, M., D'Amato, G., Corso, F. Dal, D'Ambrosio, N., De Lellis, G., D'eclais, Y., De Serio, M., Di Capua, F., Di Ferdinando, D., Di Giovanni, A., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Felici, G., Ferber, T., Fini, R., Frekers, D., Fukuda, T., Fukushima, C., Galkin, V. I., Garfagnini, A., Giacomelli, G., Giorgini, M., Goellnitz, C., Goldberg, J., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hoshino, K., Ieva, M., Jakovcic, K., Jollet, C., Juget, F., Kazuyama, M., Kim, S. H., Kimura, M., Klicek, B., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Kubota, H., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Lutter, G., Malgin, A., Mandrioli, G., Marotta, A., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Naumov, D., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Olchevski, A., Oldorf, C., Orlova, G., Osedlo, V., Paniccia, M., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Policastro, G., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, F., Rescigno, R., Roganova, T., Rokujo, H., Romano, G., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Parzefall, W. Schmidt, Schroeder, H., Lavina, L. Scotto, Sheshukov, A., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Tran, T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yakushev, V., Yoon, C. S., Yoshioka, T., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.

Subjects
High Energy Physics - Experiment
Abstract

The OPERA detector at the Gran Sasso underground laboratory (LNGS) was used to measure the atmospheric muon charge ratio in the TeV energy region. We analyzed 403069 atmospheric muons corresponding to 113.4 days of livetime during the 2008 CNGS run. We computed separately the muon charge ratio for single and for multiple muon events in order to select different energy regions of the primary cosmic ray spectrum and to test the charge ratio dependence on the primary composition. The measured charge ratio values were corrected taking into account the charge-misidentification errors. Data have also been grouped in five bins of the "vertical surface energy". A fit to a simplified model of muon production in the atmosphere allowed the determination of the pion and kaon charge ratios weighted by the cosmic ray energy spectrum., Comment: 14 pages, 10 figures

Published
2010

12. The OPERA experiment

Author

Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Buonaura, A., Buontempo, S., Büttner, B., Chernyavsky, M., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Del Amo Sanchez, P., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Fini, R.A., Fukuda, T., Galati, G., Garfagnini, A., Giacomelli, G., Göllnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Guler, M., Gustavino, C., Hagner, C., Hara, T., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Kawada, J., Kim, J.H., Kim, S.H., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Malenica, M., Mandrioli, G., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Mikado, S., Monacelli, P., Montesi, M.C., Morishima, K., Muciaccia, M.T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B.D., Park, I.G., Pasqualini, L., Pastore, A., Patrizii, L., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pupilli, F., Roda, M., Rokujo, H., Roganova, T., Rosa, G., Ryazhskaya, O., Sato, O., Schembri, A., Shakiryanova, I., Shchedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S.M., Stipcevic, M., Strauss, T., Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J.L., Wilquet, G., Wonsak, B., Yoon, C.S., Zemskova, S., and Zghiche, A.

Published
2015
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14. Measurement of the neutrino velocity with the OPERA detector in the CNGS beam

Author

Adam, T., Agafonova, N., Aleksandrov, A., Altinok, O., Alvarez Sanchez, P., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Ben Dhahbi, A., Bertolin, A., Bozza, C., Brugière, T., Brugnera, R., Brunet, F., Brunetti, G., Buontempo, S., Carlus, B., Cavanna, F., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., Colosimo, G., Crespi, M., D’Ambrosio, N., De Lellis, G., De Serio, M., Déclais, Y., del Amo Sanchez, P., Di Capua, F., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Efthymiopoulos, I., Egorov, O., Ereditato, A., Esposito, L. S., Favier, J., Ferber, T., Fini, R. A., Fukuda, T., Garfagnini, A., Giacomelli, G., Giorgini, M., Giovannozzi, M., Girerd, C., Goldberg, J., Göllnitz, C., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Gschwendtner, E., Guerin, C., Guler, A. M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Enikeev, R., Hierholzer, M., Hollnagel, A., Ieva, M., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Jones, M., Juget, F., Kamiscioglu, M., Kawada, J., Kim, S. H., Kimura, M., Kiritsis, E., Kitagawa, N., Klicek, B., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Mazzoni, A., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Missiaen, D., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Nitti, F., Ogawa, S., Okateva, N., Olchevsky, A., Palamara, O., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Riguzzi, F., Roganova, T., Rokujo, H., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sato, O., Sato, Y., Sahnoun, Z., Schembri, A., Schuler, J., Scotto Lavina, L., Serrano, J., Shakiryanova, I., Sheshukov, A., Shibuya, H., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S., Stipcevic, M., Strauss, T., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Trani, N. T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J.-L., Wilquet, G., Wonsak, B., Wurtz, J., Yakushev, V., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., and The OPERA collaboration

Published
2012
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15. Measurement of the atmospheric muon charge ratio with the OPERA detector

Author

Agafonova, N., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Bagulya, A., Bertolin, A., Besnier, M., Bick, D., Boyarkin, V., Bozza, C., Brugière, T., Brugnera, R., Brunetti, G., Buontempo, S., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Cozzi, M., D’Amato, G., Dal Corso, F., D’Ambrosio, N., De  Lellis, G., Déclais, Y., De  Serio, M., Di  Capua, F., Di  Ferdinando, D., Di  Giovanni, A., Di  Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Felici, G., Ferber, T., Fini, R., Frekers, D., Fukuda, T., Fukushima, C., Galkin, V. I., Garfagnini, A., Giacomelli, G., Giorgini, M., Goellnitz, C., Goldberg, J., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hoshino, K., Ieva, M., Jakovcic, K., Jollet, C., Juget, F., Kazuyama, M., Kim, S. H., Kimura, M., Klicek, B., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Kubota, H., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Lutter, G., Malgin, A., Mandrioli, G., Marotta, A., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Naumov, D., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Olchevski, A., Oldorf, C., Orlova, G., Osedlo, V., Paniccia, M., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Policastro, G., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, F., Rescigno, R., Roganova, T., Rokujo, H., Romano, G., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Schmidt Parzefall, W., Schroeder, H., Scotto Lavina, L., Sheshukov, A., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Tran, T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yakushev, V., Yoon, C. S., Yoshioka, T., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.

Published
2010
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17. Measurement of the neutrino velocity with the OPERA detector in the CNGS beam

Author

The OPERA Collaboration, Adam, T., Agafonova, N., Aleksandrov, A., Altinok, O., Sanchez, P. Alvarez, Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Dhahbi, A. Ben, Bertolin, A., Bozza, C., Brugiere, T., Brugnera, R., Brunet, F., Brunetti, G., Buontempo, S., Carlus, B., Cavanna, F., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., Colosimo, G., Crespi, M., D'Ambrosio, N., De Lellis, G., De Serio, M., Declais, Y., Sanchez, P. del Amo, Di Capua, F., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Efthymiopoulos, I., Egorov, O., Ereditato, A., Esposito, L. S., Favier, J., Ferber, T., Fini, R. A., Fukuda, T., Garfagnini, A., Giacomelli, G., Giorgini, M., Giovannozzi, M., Girerd, C., Goldberg, J., Gollnitz, C., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Gschwendtner, E., Guerin, C., Guler, A. M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Enikeev, R., Hierholzer, M., Hollnagel, A., Ieva, M., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Jones, M., Juget, F., Kamiscioglu, M., Kawada, J., Kim, S. H., Kimura, M., Kiritsis, E., Kitagawa, N., Klicek, B., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Mazzoni, A., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Missiaen, D., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Nitti, F., Ogawa, S., Okateva, N., Olchevsky, A., Palamara, O., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Riguzzi, F., Roganova, T., Rokujo, H., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sato, O., Sato, Y., Sahnoun, Z., Schembri, A., Schuler, J., Lavina, L. Scotto, Serrano, J., Shakiryanova, I., Sheshukov, A., Shibuya, H., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S., Stipcevic, M., Strauss, T., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Tran, N. T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. -L., Wilquet, G., Wonsak, B., Wurtz, J., Yakushev, V., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., Adam, T., Agafonova, N., Aleksandrov, A., Altinok, O., Alvarez Sanchez, P., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Ben Dhahbi, A., Bertolin, A., Bozza, C., Brugière, T., Brugnera, R., Brunet, F., Brunetti, G., Buontempo, S., Carlus, B., Cavanna, F., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., Colosimo, G., Crespi, M., D’Ambrosio, N., De Lellis, G., De Serio, M., Déclais, Y., del Amo Sanchez, P., DI CAPUA, Francesco, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Efthymiopoulos, I., Egorov, O., Ereditato, A., Esposito, L. S., Favier, J., Ferber, T., Fini, R. A., Fukuda, T., Garfagnini, A., Giacomelli, G., Giorgini, M., Giovannozzi, M., Girerd, C., Goldberg, J., Göllnitz, C., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Gschwendtner, E., Guerin, C., Guler, A. M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Enikeev, R., Hierholzer, M., Hollnagel, A., Ieva, M., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Jones, M., Juget, F., Kamiscioglu, M., Kawada, J., Kim, S. H., Kimura, M., Kiritsis, E., Kitagawa, N., Klicek, B., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Mazzoni, A., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Missiaen, D., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Nitti, F., Ogawa, S., Okateva, N., Olchevsky, A., Palamara, O., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Riguzzi, F., Roganova, T., Rokujo, H., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sato, O., Sato, Y., Sahnoun, Z., Schembri, A., Schuler, J., Scotto Lavina, L., Serrano, J., Shakiryanova, I., Sheshukov, A., Shibuya, H., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S., Stipcevic, M., Strauss, T., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Trani, N. T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Wurtz, J., Yakushev, V., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., DE LELLIS, Giovanni, DI CRESCENZO, Antonia, T. ADAM, N. AGAFONOVA, A. ALEKSANDROV, O. ALTINOK, P. ALVAREZ SANCHEZ, A. ANOKHINA, S. AOKI, A. ARIGA, T. ARIGA, D. AUTIERO, A. BADERTSCHER, A. BEN DHAHBI, A. BERTOLIN, C. BOZZA, T. BRUGI ERE, R. BRUGNERA, F. BRUNET, G. BRUNETTI, S. BUONTEMPO, B. CARLUS, F. CAVANNA, A. CAZES, L. CHAUSSARD, M. CHERNYAVSKY, V. CHIARELLA, A. CHUKANOV, G. COLOSIMO, M. CRESPI, N. D'AMBROSIO, G. DE LELLIS, M. DE SERIO, Y. D ECLAIS, P. DEL AMO SANCHEZ, F. DI CAPUA, A. DI CRESCENZO, D. DI FERDINANDO, N. DI MARCO, S. DMITRIEVSKY, M. DRACOS, D. DUCHESNEAU, S. DUSINI, T. DZHATDOEV, J. EBERT, I. EFTHYMIOPOULOS, O. EGOROV, A. EREDITATO, L.S. ESPOSITO, J. FAVIER, T. FERBER, R. A. FINI, T. FUKUDA, A. GARFAGNINI, G. GIACOMELLI, M. GIORGINI, M. GIOVANNOZZI, C. GIRERD, J. GOLDBERG, C. GOLLNITZ, D. GOLUBKOV, L. GONCHAROVA, Y. GORNUSHKIN, G. GRELLA, F. GRIANTI, E. GSCHWENDTNER, C. GUERIN, A. M. GULER, C. GUSTAVINO, C. HAGNER, K. HAMADA, T. HARA, R. ENIKEEV, M. HIERHOLZER, A. HOLLNAGEL, M. IEVA, H. ISHIDA, K. ISHIGURO, K. JAKOVCIC, C. JOLLET, M. JONES, F. JUGET, M. KAMISCIOGLU, J. KAWADA, S. H. KIM, M. KIMURA, E. KIRITSIS, N. KITAGAWA, B. KLICEK, J. KNUESEL, K. KODAMA, M. KOMATSU, U. KOSE, I. KRESLO, C. LAZZARO, J. LENKEIT, A. LJUBICIC, A. LONGHIN, A. MALGIN, G. MANDRIOLI, J. MARTEAU, T. MATSUO, V. MATVEEV, N. MAURI, A. MAZZONI, E. MEDINACELI, F. MEISEL, A. MEREGAGLIA, P. MIGLIOZZI, S. MIKADO, D. MISSIAEN, P. MONACELLI, K. MORISHIMA, U. MOSER, M. T. MUCIACCIA, N. NAGANAWA, T. NAKA, M. NAKAMURA, T. NAKANO, Y. NAKATSUKA, D. NAUMOV, V. NIKITINA, F. NITTI, S. OGAWA, N. OKATEVA, A. OLCHEVSKY, O. PALAMARA, A. PAOLONI, B. D. PARK, I. G. PARK, A. PASTORE, L. PATRIZII, E. PENNACCHIO, H. PESSARD, C. PISTILLO, N. POLUKHINA, M. POZZATO, K. PRETZL, F. PUPILLI, R. RESCIGNO, F. RIGUZZI, T. ROGANOVA, H. ROKUJO, G. ROSA, I. ROSTOVTSEVA, A. RUBBIA, A. RUSSO, V. RYASNY, O. RYAZHSKAYA, O. SATO, Y. SATO, Z. SAHNOUN, A. SCHEMBRI, J. SCHULER, L. SCOTTO LAVINA, J. SERRANO, I. SHAKIRYANOVA, A. SHESHUKOV, H. SHIBUYA, G. SHOZIYOEV, S. SIMONE, M. SIOLI, C. SIRIGNANO, G. SIRRI, J. S. SONG, M. SPINETTI, L. STANCO, N. STARKOV, S. STELLACCI, M. STIPCEVIC, T. STRAUSS, S. TAKAHASHI, M. TENTI, F. TERRANOVA, I. TEZUKA, V. TIOUKOV, P. TOLUN, N.T. TRAN, S. TUFANLI, P. VILAIN, M. VLADIMIROV, L. VOTANO, J. L. VUILLEUMIER, G. WILQUET, B. WONSAK, J. WURTZ, V. YAKUSHEV, C. S. YOON, J. YOSHIDA, Y. ZAITSEV, S. ZEMSKOVAT, A. ZGHICHEN, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), OPERA, Adam, T, Agafonova, N, Aleksandrov, A, Altinok, O, Alvarez Sanchez, P, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Ben Dhahbi, A, Bertolin, A, Bozza, C, Brugière, T, Brugnera, R, Brunet, F, Brunetti, G, Buontempo, S, Carlus, B, Cavanna, F, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chukanov, A, Colosimo, G, Crespi, M, D’Ambrosio, N, De Lellis, G, De Serio, M, Déclais, Y, del Amo Sanchez, P, Di Capua, F, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievsky, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Efthymiopoulos, I, Egorov, O, Ereditato, A, Esposito, L, Favier, J, Ferber, T, Fini, R, Fukuda, T, Garfagnini, A, Giacomelli, G, Giorgini, M, Giovannozzi, M, Girerd, C, Goldberg, J, Göllnitz, C, Golubkov, D, Goncharova, L, Gornushkin, Y, Grella, G, Grianti, F, Gschwendtner, E, Guerin, C, Guler, A, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Enikeev, R, Hierholzer, M, Hollnagel, A, Ieva, M, Ishida, H, Ishiguro, K, Jakovcic, K, Jollet, C, Jones, M, Juget, F, Kamiscioglu, M, Kawada, J, Kim, S, Kimura, M, Kiritsis, E, Kitagawa, N, Klicek, B, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Malgin, A, Mandrioli, G, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Mazzoni, A, Medinaceli, E, Meisel, F, Meregaglia, A, Migliozzi, P, Mikado, S, Missiaen, D, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Nakatsuka, Y, Naumov, D, Nikitina, V, Nitti, F, Ogawa, S, Okateva, N, Olchevsky, A, Palamara, O, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Pupilli, F, Rescigno, R, Riguzzi, F, Roganova, T, Rokujo, H, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sato, O, Sato, Y, Sahnoun, Z, Schembri, A, Schuler, J, Scotto Lavina, L, Serrano, J, Shakiryanova, I, Sheshukov, A, Shibuya, H, Shoziyoev, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stellacci, S, Stipcevic, M, Strauss, T, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Trani, N, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Wurtz, J, Yakushev, V, Yoon, C, Yoshida, J, Zaitsev, Y, Zemskova, S, and Zghiche, A

Subjects
velocity, Particle physics, Nuclear and High Energy Physics, Neutrino detectors and telescopes, NEUTRINO VELOCITY, Physics::Instrumentation and Detectors, GPS, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, neutrino, OPERA, CNGS, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Physics, Geodesy, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Muon neutrino, 010306 general physics, Physics, Muon, Large Hadron Collider, 010308 nuclear & particles physics, Massless particle, High Energy Physics - Phenomenology, NEUTRINOS, Physique des particules élémentaires, PARTICLE PHYSICS, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Energy source, Particle Physics - Experiment, Lepton
Abstract

The OPERA neutrino experiment at the underground Gran Sasso Laboratory has measured the velocity of neutrinos from the CERN CNGS beam over a baseline of about 730 km. The measurement is based on data taken by OPERA in the years 2009, 2010 and 2011. Dedicated upgrades of the CNGS timing system and of the OPERA detector, as well as a high precision geodesy campaign for the measurement of the neutrino baseline, allowed reaching comparable systematic and statistical accuracies. An arrival time of CNGS muon neutrinos with respect to the one computed assuming the speed of light in vacuum of (6:5 ± 7:4 (stat:) +8.34 -8.0(sys:)) ns was measured corresponding to a relative difference of the muon neutrino velocity with respect to the speed of light (v - c)=c = (2:7 ± 3:1 (stat:) +3.4 -3:3 (sys:)) × 10 -6. The above result, obtained by comparing the time distributions of neutrino interactions and of protons hitting the CNGS target in 10.5 μs long extractions, was confirmed by a test performed at the end of 2011 using a short bunch beam allowing to measure the neutrino time of ight at the single interaction level., 0, arXiv-1109.4897v4, info:eu-repo/semantics/published

Published
2012

18. Wie effektiv sind Bildungssysteme? Zur Untersuchung von Entwicklungen in PIRLS mit value-added-Modellen

Author

Lenkeit, J. and Educational Sciences (RICDE, FMG)

Abstract

From an educational effectiveness perspective, research based on international large scale assessments has been limited as it neglects to take contextual conditions of educational systems into account. Further, methodological challenges of cross-sectional studies have yet prevented investigations from a longitudinal effectiveness perspective. The paper investigates how effectively educational systems grow, i.e. change, in their performance by applying a methodological approach known from school effectiveness research that captures changes at the country level within repeated cross-sectional data designs. Data from the Progress in International Reading Literacy Study (PIRLS) 2001 to 2006 trend systems is analyzed with hierarchical linear modeling. Effectiveness measures of achievement status in 2006 and of change from 2001 to 2006 are investigated and compared. Results suggest that there are systems which exceed their expected outcomes (status and change) as well as systems which stay below what could have been expected, changing the picture of “high” and “low” performing systems, when contextual conditions and prior performances are taken into account. The study contributes to methodological developments of educational effectiveness research in cross-national assessments. Its results provide complementary information for policymakers to further look at policies, practices, and structures that have favored effectiveness.

Published
2016

19. Evidence for numu->nutau appearance in the CNGS neutrino beam with the OPERA experiment

Author

Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Asada, T., Autiero, D., Ben Dhahbi, A., Badertscher, A., Bender, D., Bertolin, Alessandro, Bozza, C., Brugnera, Riccardo, Brunet, F., Brunetti, G., Buonaura, A., Buontempo, S., Büttner, B., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., Consiglio, L., D’Ambrosio, N., De Lellis, G., De Serio, M., Del Amo Sanchez, P., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, Stefano, Dzhatdoev, T., Ebert, J., Ereditato, A., Favier, J., Ferber, T., Ferone, G., Fini, R. . A., Fukuda, T., Galati, G., Garfagnini, Alberto, Giacomelli, G., Goellnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gustavino, C., Hagner, C., Hakamata, K., Hara, T., Hayakawa, T., Hierholzer, M., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Ishikawa, M., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Katsuragawa, T., Kawada, J., Kawahara, H., Kim, J. . H., Kim, S. . H., Kimura, M., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., MEDINACELI VILLEGAS, Eduardo, Meregaglia, A., Migliozzi, P., Mikado, S., Miyanishi, M., Miyashita, E., Monacelli, P., Montesi, M. . C., Morishima, K., Muciaccia, M. . T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. . D., Park, I. . G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roda, Marco, Rokujo, H., Roganova, T., Rosa, G., Rostovtseva, I., Rubbia, A., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Schmidt Parzefal, W., Shakiryanova, I., Shchedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, Chiara, Sirri, G., Spinetti, M., Stanco, Luca, Starkov, N., Stellacci, S. . M., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. . L., Wilquet, G., Wonsak, B., Yoon, C. . S., Yoshida, J., Yoshimoto, M., Zaitsev, Y., Zemskova, S., Zghiche, A., Agafonova, N, Aleksandrov, A, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Asada, T, Autiero, D, Ben Dhahbi, A, Badertscher, A, Bender, D, Bertolin, A, Bozza, C, Brugnera, R, Brunet, F, Brunetti, G, Buonaura, A, Buontempo, S, Büttner, B, Chaussard, L, Chernyavsky, M, Chiarella, V, Chukanov, A, Consiglio, L, D'Ambrosio, N, De Lellis, G, De Serio, M, Del Amo Sanchez, P, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Ereditato, A, Favier, J, Ferber, T, Ferone, G, Fini, R, Fukuda, T, Galati, G, Garfagnini, A, Giacomelli, G, Goellnitz, C, Goldberg, J, Gornushkin, Y, Grella, G, Grianti, F, Guler, M, Gustavino, C, Hagner, C, Hakamata, K, Hara, T, Hayakawa, T, Hierholzer, M, Hollnagel, A, Hosseini, B, Ishida, H, Ishiguro, K, Ishikawa, M, Jakovcic, K, Jollet, C, Kamiscioglu, C, Kamiscioglu, M, Katsuragawa, T, Kawada, J, Kawahara, H, Kim, J, Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Lauria, A, Lenkeit, J, Ljubicic, A, Longhin, A, Loverre, P, Malgin, A, Mandrioli, G, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meregaglia, A, Migliozzi, P, Mikado, S, Miyanishi, M, Miyashita, E, Monacelli, P, Montesi, M, Morishima, K, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Nakatsuka, Y, Niwa, K, Ogawa, S, Okateva, N, Olshevsky, A, Omura, T, Ozaki, K, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pistillo, C, Podgrudkov, D, Polukhina, N, Pozzato, M, Pretzl, K, Pupilli, F, Rescigno, R, Roda, M, Rokujo, H, Roganova, T, Rosa, G, Rostovtseva, I, Rubbia, A, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Schmidt-Parzefal, W, Shakiryanova, I, Shchedrina, T, Sheshukov, A, Shibuya, H, Shiraishi, T, Shoziyoev, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Spinetti, M, Stanco, L, Starkov, N, Stellacci, S, Stipcevic, M, Strauss, T, Strolin, P, Suzuki, K, Takahashi, S, Tenti, M, Terranova, F, Tioukov, V, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yoon, C, Yoshida, J, Yoshimoto, M, Zaitsev, Y, Zemskova, S, and Zghiche, A

Subjects
neutrino
Abstract

The OPERA experiment is designed to search for νμ→ντ oscillations in appearance mode, i.e., through the direct observation of the τ lepton in ντ-charged current interactions. The experiment has taken data for five years, since 2008, with the CERN Neutrino to Gran Sasso beam. Previously, two ντ candidates with a τ decaying into hadrons were observed in a subsample of data of the 2008-2011 runs. Here we report the observation of a third ντ candidate in the τ-→μ- decay channel coming from the analysis of a subsample of the 2012 run. Taking into account the estimated background, the absence of νμ→ντ oscillations is excluded at the 3.4σ level. © 2014 American Physical Society.

Published
2014

20. Measurement of the TeV atmospheric muon charge ratio with the complete OPERA data set

Author

Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Buonaura, A., Buontempo, S., Büttner, B., Chernyavsky, M., Chukanov, A., Consiglio, L., D’Ambrosio, N., De Lellis, G., De Serio, M., Del Amo Sanchez, P., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Fini, R.A., Fukuda, T., Galati, G., Garfagnini, A., Giacomelli, G., Göllnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Guler, M., Gustavino, C., Hagner, C., Hara, T., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Kawada, J., Kim, J.H., Kim, S.H., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Malenica, M., Mandrioli, G., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Mikado, S., Monacelli, P., Montesi, M.C., Morishima, K., Muciaccia, M.T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B.D., Park, I.G., Pasqualini, L., Pastore, A., Patrizii, L., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pupilli, F., Roda, M., Rokujo, H., Roganova, T., Rosa, G., Ryazhskaya, O., Sato, O., Schembri, A., Shakiryanova, I., Shchedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S.M., Stipcevic, M., Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J.L., Wilquet, G., Wonsak, B., Yoon, C.S., Zemskova, S., Zghiche, A., N., Agafonova, Aleksandrov, A., A., Anokhina, S., Aoki, A., Ariga, T., Ariga, D., Bender, A., Bertolin, C., Bozza, R., Brugnera, Buonaura, Annarita, S., Buontempo, B., B?ttner, M., Chernyavsky, A., Chukanov, L., Consiglio, N., D?ambrosio, DE LELLIS, Giovanni, M., De Serio, P., Del Amo Sanchez, DI CRESCENZO, Antonia, D., Di Ferdinando, N., Di Marco, S., Dmitrievski, M., Draco, D., Duchesneau, S., Dusini, T., Dzhatdoev, J., Ebert, A., Ereditato, R. A., Fini, T., Fukuda, Galati, Giuliana, A., Garfagnini, G., Giacomelli, C., G?llnitz, J., Goldberg, Y., Gornushkin, G., Grella, M., Guler, C., Gustavino, C., Hagner, T., Hara, A., Hollnagel, Hosseini, Behzad, H., Ishida, K., Ishiguro, K., Jakovcic, C., Jollet, C., Kamiscioglu, M., Kamiscioglu, J., Kawada, J. H., Kim, S. H., Kim, N., Kitagawa, B., Klicek, K., Kodama, M., Komatsu, U., Kose, I., Kreslo, Lauria, Adele, J., Lenkeit, A., Ljubicic, A., Longhin, P., Loverre, A., Malgin, M., Malenica, G., Mandrioli, T., Matsuo, V., Matveev, N., Mauri, E., Medinaceli, A., Meregaglia, S., Mikado, P., Monacelli, Montesi, MARIA CRISTINA, K., Morishima, M. T., Muciaccia, N., Naganawa, T., Naka, M., Nakamura, T., Nakano, Y., Nakatsuka, K., Niwa, S., Ogawa, N., Okateva, A., Olshevsky, T., Omura, K., Ozaki, A., Paoloni, B. D., Park, I. G., Park, L., Pasqualini, A., Pastore, L., Patrizii, H., Pessard, C., Pistillo, D., Podgrudkov, N., Polukhina, M., Pozzato, F., Pupilli, M., Roda, H., Rokujo, T., Roganova, G., Rosa, O., Ryazhskaya, O., Sato, A., Schembri, I., Shakiryanova, T., Shchedrina, A., Sheshukov, H., Shibuya, T., Shiraishi, G., Shoziyoev, S., Simone, M., Sioli, C., Sirignano, G., Sirri, M., Spinetti, L., Stanco, N., Starkov, S. M., Stellacci, M., Stipcevic, P., Strolin, S., Takahashi, M., Tenti, F., Terranova, V., Tioukov, S., Tufanli, P., Vilain, M., Vladimirov, L., Votano, J. L., Vuilleumier, G., Wilquet, B., Wonsak, C. S., Yoon, S., Zemskova, A., Zghiche, Agafonova, N, Aleksandrov, A, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Bender, D, Bertolin, A, Bozza, C, Brugnera, R, Buonaura, A, Buontempo, S, Büttner, B, Chernyavsky, M, Chukanov, A, Consiglio, L, D’Ambrosio, N, De Lellis, G, De Serio, M, Del Amo Sanchez, P, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Ereditato, A, Fini, R, Fukuda, T, Galati, G, Garfagnini, A, Giacomelli, G, Göllnitz, C, Goldberg, J, Gornushkin, Y, Grella, G, Guler, M, Gustavino, C, Hagner, C, Hara, T, Hollnagel, A, Hosseini, B, Ishida, H, Ishiguro, K, Jakovcic, K, Jollet, C, Kamiscioglu, C, Kamiscioglu, M, Kawada, J, Kim, J, Kim, S, Kitagawa, N, Klicek, B, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Lauria, A, Lenkeit, J, Ljubicic, A, Longhin, A, Loverre, P, Malgin, A, Malenica, M, Mandrioli, G, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meregaglia, A, Mikado, S, Monacelli, P, Montesi, M, Morishima, K, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Nakatsuka, Y, Niwa, K, Ogawa, S, Okateva, N, Olshevsky, A, Omura, T, Ozaki, K, Paoloni, A, Park, B, Park, I, Pasqualini, L, Pastore, A, Patrizii, L, Pessard, H, Pistillo, C, Podgrudkov, D, Polukhina, N, Pozzato, M, Pupilli, F, Roda, M, Rokujo, H, Roganova, T, Rosa, G, Ryazhskaya, O, Sato, O, Schembri, A, Shakiryanova, I, Shchedrina, T, Sheshukov, A, Shibuya, H, Shiraishi, T, Shoziyoev, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Spinetti, M, Stanco, L, Starkov, N, Stellacci, S, Stipcevic, M, Strolin, P, Takahashi, S, Tenti, M, Terranova, F, Tioukov, V, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yoon, C, Zemskova, S, Zghiche, A, N. Agafonova, A. Aleksandrov, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, D. Bender, A. Bertolin, C. Bozza, R. Brugnera, A. Buonaura, S. Buontempo, B. Buettner, M. Chernyavsky, A. Chukanov, L. Consiglio, N. D'Ambrosio, G. D. Lelli, M. D. Serio, P. D. Amo, A. D. Crescenzo, D. D. Ferdinando, N. D. Marco, S. Dmitrievski, M. Draco, D. Duchesneau, S. Dusini, T. Dzhatdoev, J. Ebert, A. Ereditato, R. A. Fini, T. Fukuda, G. Galati, A. Garfagnini, G. Giacomelli, C. Goellnitz, J. Goldberg, Y. Gornushkin, G. Grella, M. Guler, C. Gustavino, C. Hagner, T. Hara, A. Hollnagel, B. Hosseini, H. Ishida, K. Ishiguro, K. Jakovcic, C. Jollet, C. Kamiscioglu, M. Kamiscioglu, J. Kawada, J. H. Kim, S. H. Kim, N. Kitagawa, B. Klicek, K. Kodama, M. Komatsu, U. Kose, I. Kreslo, A. Lauria, J. Lenkeit, A. Ljubicic, A. Longhin, P. Loverre, A. Malgin, M. Malenica, G. Mandrioli, T. Matsuo, V. Matveev, N. Mauri, E. Medinaceli, A. Meregaglia, S. Mikado, P. Monacelli, M. C. Montesi, K. Morishima, M. T. Muciaccia, N. Naganawa, T. Naka, M. Nakamura, T. Nakano, Y. Nakatsuka, K. Niwa, S. Ogawa, N. Okateva, A. Olshevsky, T. Omura, K. Ozaki, A. Paoloni, B. D. Park, I. G. Park, L. Pasqualini, A. Pastore, L. Patrizii, H. Pessard, C. Pistillo, D. Podgrudkov, N. Polukhina, M. Pozzato, F. Pupilli, M. Roda, H. Rokujo, T. Roganova, G. Rosa, O. Ryazhskaya, O. Sato, A. Schembri, I. Shakiryanova, T. Shchedrina, A. Sheshukov, H. Shibuya, T. Shiraishi, G. Shoziyoev, S. Simone, M. Sioli, C. Sirignano, G. Sirri, M. Spinetti, L. Stanco, N. Starkov, S. M. Stellacci, M. Stipcevic, P. Strolin, S. Takahashi, M. Tenti, F. Terranova, V. Tioukov, S. Tufanli, P. Vilain, M. Vladimirov, L. Votano, J. L. Vuilleumier, G. Wilquet, B. Wonsak, C. S. Yoon, S. Zemskova, and A. Zghiche

Subjects
ratio, cosmic-ray muons, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, OPERA, spectrum, atmospheric, muon, charge, MUON SPECTROMETER, cosmic rays, UNDERGROUND PHYSICS, oscillation, neutrino detectors and telescopes, High Energy Physics::Experiment, Engineering (miscellaneous), ATMOSPHERIC MUONS
Abstract

The OPERA detector, designed to search for nu(mu) -> nu(tau) oscillations in the CNGS beam, is located in the underground Gran Sasso laboratory, a privileged location to study TeV-scale cosmic rays. For the analysis here presented, the detector was used to measure the atmospheric muon charge ratio in the TeV region. OPERA collected charge-separated cosmic ray data between 2008 and 2012. More than 3 million atmospheric muon events were detected and reconstructed, among which about 110000 multiple muon bundles. The charge ratio R-mu = N-mu+/N-mu- was measured separately for single and for multiple muon events. The analysis exploited the inversion of the magnet polarity which was performed on purpose during the 2012 Run. The combination of the two data sets with opposite magnet polarities allowed minimizing systematic uncertainties and reaching an accurate determination of the muon charge ratio. Data were fitted to obtain relevant parameters on the composition of primary cosmic rays and the associated kaon production in the forward fragmentation region. In the surface energy range 1-20 TeV investigated by OPERA, R-mu is well described by a parametric model including only pion and kaon contributions to themuon flux, showing no significant contribution of the prompt component. The energy independence supports the validity of Feynman scaling in the fragmentation region up to 200 TeV/nucleon primary energy.

Published
2014

22. The detection of neutrino interactions in the emulsion/lead target of the OPERA experiment

Author

Agafonova, N, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Arrabito, L, Autiero, D, Badertscher, A, Bagulya, A, Bersani Greggio, F, Bertolin, A, Besnier, M, Bick, D, Boyarkin, V, Bozza, C, Brugière, T, Brugnera, R, Brunetti, G, Buontempo, S, Carrara, E, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chon-Sen, N, Chukanov, A, Cozzi, M, D'Amato, G, Dal Corso, F, D'Ambrosio, N, De Lellis, G, Déclais, Y, De Serio, M, Di Capua, F, Di Ferdinando, D, Di Giovanni, A, Di Marco, N, Di Troia, C, Dmitrievski, S, Dominjon, A, Dracos, M, Duchesneau, D, Dusini, S, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Felici, G, Ferber, T, Fini, R, Frekers, D, Fukuda, T, Fukushima, C, Galkin, V, Garfagnini, A, Giacomelli, G, Giorgini, M, Goellnitz, C, Goeltzenlichter, T, Goldberg, J, Golubkov, D, Gornushkin, Y, Grella, G, Grianti, F, Guler, M, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hoshino, K, Ieva, M, Jakovcic, K, Janutta, B, Jollet, C, Juget, F, Kazuyama, M, Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Knuesel, J, Kodama, K, Kolev, D, Komatsu, M, Kose, U, Krasnoperov, A, Kreslo, I, Krumstein, Z, Kubota, H, Kutsenov, V, Kuznetsov, V, Laktineh, I, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Lutter, G, Malgin, A, Manai, K, Mandrioli, G, Marotta, A, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Messina, M, Migliozzi, P, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Nikitina, V, Niwa, K, Nonoyama, Y, Nozdrin, A, Ogawa, S, Olchevski, A, Orlova, G, Osedlo, V, Ossetski, D, Paniccia, M, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Rescigno, R, Rizhikov, D, Roganova, T, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sadovski, A, Sato, O, Sato, Y, Saveliev, V, Schembri, A, Schmidt Parzefall, W, Schroeder, H, Schütz, H, Schuler, J, Scotto Lavina, L, Shibuya, H, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Sugonyaev, V, Takahashi, S, Tereschenko, V, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Tsarev, V, Tsenov, R, Tufanli, S, Ushida, N, Verguilov, V, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yakushev, V, Yoon, C, Yoshioka, T, Yoshida, J, Zaitsev, Y, Zghiche, A, Zimmermann, R, Agafonova, N., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Arrabito, L., Autiero, D., Badertscher, A., Bagulya, A., Bersani Greggio, F., Bertolin, A., Besnier, M., Bick, D., Boyarkin, V., Bozza, C., Brugière, T., Brugnera, R., Brunetti, G., Buontempo, S., Carrara, E., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Cozzi, M., D'amato, G., Dal Corso, F., D'ambrosio, N., De Lellis, G., Déclais, Y., De Serio, M., Di Capua, F., Di Ferdinando, D., Di Giovanni, A., Di Marco, N., Di Troia, C., Dmitrievski, S., Dominjon, A., Dracos, M., Duchesneau, D., Dusini, S., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Felici, G., Ferber, T., Fini, R., Frekers, D., Fukuda, T., Fukushima, C., Galkin, V. I., Galkin, V. A., Garfagnini, A., Giacomelli, G., Giorgini, M., Goellnitz, C., Goeltzenlichter, T., Goldberg, J., Golubkov, D., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hoshino, K., Ieva, M., Jakovcic, K., Janutta, B., Jollet, C., Juget, F., Kazuyama, M., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Knuesel, J., Kodama, K., Kolev, D., Komatsu, M., Kose, U., Krasnoperov, A., Kreslo, I., Krumstein, Z., Kubota, H., Kutsenov, V. V., Kuznetsov, V. A., Laktineh, I., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Lutter, G., Malgin, A., Manai, K., Mandrioli, G., Marotta, A., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F., Meregaglia, A., Messina, M., Migliozzi, P., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nikitina, V., Niwa, K., Nonoyama, Y., Nozdrin, A., Ogawa, S., Olchevski, A., Orlova, G., Osedlo, V., Ossetski, D., Paniccia, M., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, F., Rescigno, R., Rizhikov, D., Roganova, T., Romano, G., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sadovski, A., Sato, O., Sato, Y., Saveliev, V., Schembri, A., Schmidt Parzefall, W., Schroeder, H., Schütz, H. U., Schuler, J., Scotto Lavina, L., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Sugonyaev, V., Takahashi, S., Tereschenko, V., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Tsarev, V., Tsenov, R., Tufanli, S., Ushida, N., Verguilov, V., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yakushev, V., Yoon, C. S., Yoshioka, T., Yoshida, J., Zaitsev, Y., Zghiche, A., Zimmermann, R., Agafonova, N, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Arrabito, L, Autiero, D, Badertscher, A, Bagulya, A, Bersani Greggio, F, Bertolin, A, Besnier, M, Bick, D, Boyarkin, V, Bozza, C, Brugière, T, Brugnera, R, Brunetti, G, Buontempo, S, Carrara, E, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chon-Sen, N, Chukanov, A, Cozzi, M, D'Amato, G, Dal Corso, F, D'Ambrosio, N, De Lellis, G, Déclais, Y, De Serio, M, Di Capua, F, Di Ferdinando, D, Di Giovanni, A, Di Marco, N, Di Troia, C, Dmitrievski, S, Dominjon, A, Dracos, M, Duchesneau, D, Dusini, S, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Felici, G, Ferber, T, Fini, R, Frekers, D, Fukuda, T, Fukushima, C, Galkin, V, Garfagnini, A, Giacomelli, G, Giorgini, M, Goellnitz, C, Goeltzenlichter, T, Goldberg, J, Golubkov, D, Gornushkin, Y, Grella, G, Grianti, F, Guler, M, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hoshino, K, Ieva, M, Jakovcic, K, Janutta, B, Jollet, C, Juget, F, Kazuyama, M, Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Knuesel, J, Kodama, K, Kolev, D, Komatsu, M, Kose, U, Krasnoperov, A, Kreslo, I, Krumstein, Z, Kubota, H, Kutsenov, V, Kuznetsov, V, Laktineh, I, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Lutter, G, Malgin, A, Manai, K, Mandrioli, G, Marotta, A, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Messina, M, Migliozzi, P, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Nikitina, V, Niwa, K, Nonoyama, Y, Nozdrin, A, Ogawa, S, Olchevski, A, Orlova, G, Osedlo, V, Ossetski, D, Paniccia, M, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Rescigno, R, Rizhikov, D, Roganova, T, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sadovski, A, Sato, O, Sato, Y, Saveliev, V, Schembri, A, Schmidt Parzefall, W, Schroeder, H, Schütz, H, Schuler, J, Scotto Lavina, L, Shibuya, H, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Sugonyaev, V, Takahashi, S, Tereschenko, V, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Tsarev, V, Tsenov, R, Tufanli, S, Ushida, N, Verguilov, V, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yakushev, V, Yoon, C, Yoshioka, T, Yoshida, J, Zaitsev, Y, Zghiche, A, Zimmermann, R, Agafonova, N., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Arrabito, L., Autiero, D., Badertscher, A., Bagulya, A., Bersani Greggio, F., Bertolin, A., Besnier, M., Bick, D., Boyarkin, V., Bozza, C., Brugière, T., Brugnera, R., Brunetti, G., Buontempo, S., Carrara, E., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Cozzi, M., D'amato, G., Dal Corso, F., D'ambrosio, N., De Lellis, G., Déclais, Y., De Serio, M., Di Capua, F., Di Ferdinando, D., Di Giovanni, A., Di Marco, N., Di Troia, C., Dmitrievski, S., Dominjon, A., Dracos, M., Duchesneau, D., Dusini, S., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Felici, G., Ferber, T., Fini, R., Frekers, D., Fukuda, T., Fukushima, C., Galkin, V. I., Galkin, V. A., Garfagnini, A., Giacomelli, G., Giorgini, M., Goellnitz, C., Goeltzenlichter, T., Goldberg, J., Golubkov, D., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hoshino, K., Ieva, M., Jakovcic, K., Janutta, B., Jollet, C., Juget, F., Kazuyama, M., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Knuesel, J., Kodama, K., Kolev, D., Komatsu, M., Kose, U., Krasnoperov, A., Kreslo, I., Krumstein, Z., Kubota, H., Kutsenov, V. V., Kuznetsov, V. A., Laktineh, I., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Lutter, G., Malgin, A., Manai, K., Mandrioli, G., Marotta, A., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F., Meregaglia, A., Messina, M., Migliozzi, P., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nikitina, V., Niwa, K., Nonoyama, Y., Nozdrin, A., Ogawa, S., Olchevski, A., Orlova, G., Osedlo, V., Ossetski, D., Paniccia, M., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, F., Rescigno, R., Rizhikov, D., Roganova, T., Romano, G., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sadovski, A., Sato, O., Sato, Y., Saveliev, V., Schembri, A., Schmidt Parzefall, W., Schroeder, H., Schütz, H. U., Schuler, J., Scotto Lavina, L., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Sugonyaev, V., Takahashi, S., Tereschenko, V., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Tsarev, V., Tsenov, R., Tufanli, S., Ushida, N., Verguilov, V., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yakushev, V., Yoon, C. S., Yoshioka, T., Yoshida, J., Zaitsev, Y., Zghiche, A., and Zimmermann, R.

Abstract

The OPERA neutrino detector in the underground Gran Sasso Laboratory (LNGS) was designed to perform the first detection of neutrino oscillations in appearance mode through the study of Î1⁄2Î1⁄4→ Î1⁄2Ï„oscillations. The apparatus consists of an emulsion/lead target complemented by electronic detectors and it is placed in the high energy long-baseline CERN to LNGS beam (CNGS) 730 km away from the neutrino source. Runs with CNGS neutrinos were successfully carried out in 2007 and 2008 with the detector fully operational with its related facilities for the emulsion handling and analysis. After a brief description of the beam and of the experimental setup we report on the collection, reconstruction and analysis procedures of first samples of neutrino interaction events. © 2009 IOP Publishing Ltd and SISSA.

Published
2009

23. Emulsion sheet doublets as interface trackers for the OPERA experiment

Author

Anokhina, A, Aoki, S, Ariga, A, Arrabito, L, Autiero, D, Badertscher, A, Bay, F, Greggio, F, Bertolin, A, Besnier, M, Bick, D, Bozza, C, Brugiere, T, Brugnera, R, Brunetti, G, Buontempo, S, Carrara, E, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chon-Sen, N, Chukanov, A, Consiglio, L, Cozzi, M, Cuha, V, Dal Corso, F, D'Amato, G, D'Ambrosio, N, De Lellis, G, Déclais, Y, De Serio, M, Di Capua, F, Di Ferdinando, D, Di Giovanni, A, Di Marco, N, Di Troia, C, Dmitrievski, S, Dominjon, A, Dracos, M, Duchesneau, D, Dusini, S, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Felici, G, Ferber, T, Fini, R, Frekers, D, Fukuda, T, Galkin, V, Garfagnini, A, Giacomelli, G, Giorgini, M, Goellnitz, C, Goldberg, J, Golubkov, D, Gornushkin, Y, Grella, G, Grianti, F, Guler, M, Gusev, G, Gustavino, C, Hagner, C, Hara, T, Hierholzer, M, Hiramatsu, S, Hoshino, K, Ieva, M, Jakovcic, K, Janicsko Csathy, J, Janutta, B, Jollet, C, Juget, F, Kawai, T, Kazuyama, M, Kim, S, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Laktineh, I, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Lutter, G, Manai, K, Mandrioli, G, Marotta, A, Marteau, J, Matsuo, T, Matsuoka, H, Mauri, N, Meisel, F, Meregaglia, A, Messina, M, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakamura, T, Nakano, T, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Osedlo, V, Ossetski, D, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Roganova, T, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryazhskaya, O, Ryzhikov, D, Sato, O, Sato, Y, Saveliev, V, Sazhina, G, Schembri, A, Scotto Lavina, L, Shibuya, H, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Sugonyaev, V, Taira, Y, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Tsarev, V, Tufanli, S, Ushida, N, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yoon, C, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Anokhina, A., Aoki, S., Ariga, A., Arrabito, L., Autiero, D., Badertscher, A., Bay, F., Greggio, F. Bersani, Bertolin, A., Besnier, M., Bick, D., Bozza, C., Brugiere, T., Brugnera, R., Brunetti, G., Buontempo, S., Carrara, E., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Consiglio, L., Cozzi, M., Cuha, V., Dal Corso, F., D'Amato, G., D'Ambrosio, N., De Lellis, G., Déclais, Y., De Serio, M., Di Capua, F., Di Ferdinando, D., Di Giovanni, A., Di Marco, N., Di Troia, C., Dmitrievski, S., Dominjon, A., Dracos, M., Duchesneau, D., Dusini, S., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Felici, G., Ferber, T., Fini, R., Frekers, D., Fukuda, T., Galkin, V. I., Galkin, V. A., Garfagnini, A., Giacomelli, G., Giorgini, M., Goellnitz, C., Goldberg, J., Golubkov, D., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gusev, G., Gustavino, C., Hagner, C., Hara, T., Hierholzer, M., Hiramatsu, S., Hoshino, K., Ieva, M., Jakovcic, K., Janicsko Csathy, J., Janutta, B., Jollet, C., Juget, F., Kawai, T., Kazuyama, M., Kim, S. H., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Laktineh, I., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Lutter, G., Manai, K., Mandrioli, G., Marotta, A., Marteau, J., Matsuo, T., Matsuoka, H., Mauri, N., Meisel, F., Meregaglia, A., Messina, M., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakamura, T., Nakano, T., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Osedlo, V., Ossetski, D., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, Fabio, Roganova, T., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Ryzhikov, D., Sato, O., Sato, Y., Saveliev, V., Sazhina, G., Schembri, A., Scotto Lavina, L., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Sugonyaev, V., Taira, Y., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Tsarev, V., Tufanli, S., Ushida, N., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., Zimmermann, R., Anokhina, A, Aoki, S, Ariga, A, Arrabito, L, Autiero, D, Badertscher, A, Bay, F, Greggio, F, Bertolin, A, Besnier, M, Bick, D, Bozza, C, Brugiere, T, Brugnera, R, Brunetti, G, Buontempo, S, Carrara, E, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chon-Sen, N, Chukanov, A, Consiglio, L, Cozzi, M, Cuha, V, Dal Corso, F, D'Amato, G, D'Ambrosio, N, De Lellis, G, Déclais, Y, De Serio, M, Di Capua, F, Di Ferdinando, D, Di Giovanni, A, Di Marco, N, Di Troia, C, Dmitrievski, S, Dominjon, A, Dracos, M, Duchesneau, D, Dusini, S, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Felici, G, Ferber, T, Fini, R, Frekers, D, Fukuda, T, Galkin, V, Garfagnini, A, Giacomelli, G, Giorgini, M, Goellnitz, C, Goldberg, J, Golubkov, D, Gornushkin, Y, Grella, G, Grianti, F, Guler, M, Gusev, G, Gustavino, C, Hagner, C, Hara, T, Hierholzer, M, Hiramatsu, S, Hoshino, K, Ieva, M, Jakovcic, K, Janicsko Csathy, J, Janutta, B, Jollet, C, Juget, F, Kawai, T, Kazuyama, M, Kim, S, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Laktineh, I, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Lutter, G, Manai, K, Mandrioli, G, Marotta, A, Marteau, J, Matsuo, T, Matsuoka, H, Mauri, N, Meisel, F, Meregaglia, A, Messina, M, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakamura, T, Nakano, T, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Osedlo, V, Ossetski, D, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Roganova, T, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryazhskaya, O, Ryzhikov, D, Sato, O, Sato, Y, Saveliev, V, Sazhina, G, Schembri, A, Scotto Lavina, L, Shibuya, H, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Sugonyaev, V, Taira, Y, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Tsarev, V, Tufanli, S, Ushida, N, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yoon, C, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Anokhina, A., Aoki, S., Ariga, A., Arrabito, L., Autiero, D., Badertscher, A., Bay, F., Greggio, F. Bersani, Bertolin, A., Besnier, M., Bick, D., Bozza, C., Brugiere, T., Brugnera, R., Brunetti, G., Buontempo, S., Carrara, E., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Consiglio, L., Cozzi, M., Cuha, V., Dal Corso, F., D'Amato, G., D'Ambrosio, N., De Lellis, G., Déclais, Y., De Serio, M., Di Capua, F., Di Ferdinando, D., Di Giovanni, A., Di Marco, N., Di Troia, C., Dmitrievski, S., Dominjon, A., Dracos, M., Duchesneau, D., Dusini, S., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Felici, G., Ferber, T., Fini, R., Frekers, D., Fukuda, T., Galkin, V. I., Galkin, V. A., Garfagnini, A., Giacomelli, G., Giorgini, M., Goellnitz, C., Goldberg, J., Golubkov, D., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gusev, G., Gustavino, C., Hagner, C., Hara, T., Hierholzer, M., Hiramatsu, S., Hoshino, K., Ieva, M., Jakovcic, K., Janicsko Csathy, J., Janutta, B., Jollet, C., Juget, F., Kawai, T., Kazuyama, M., Kim, S. H., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Laktineh, I., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Lutter, G., Manai, K., Mandrioli, G., Marotta, A., Marteau, J., Matsuo, T., Matsuoka, H., Mauri, N., Meisel, F., Meregaglia, A., Messina, M., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakamura, T., Nakano, T., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Osedlo, V., Ossetski, D., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, Fabio, Roganova, T., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Ryzhikov, D., Sato, O., Sato, Y., Saveliev, V., Sazhina, G., Schembri, A., Scotto Lavina, L., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Sugonyaev, V., Taira, Y., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Tsarev, V., Tufanli, S., Ushida, N., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.

Abstract

New methods for efficient and unambiguous interconnection between electronic position sensitive detectors and target units based on nuclear photographic emulsion films have been developed. The application to the OPERA experiment,that aims at detecting VÎ1⁄4⇋VÏ„oscillations in the CNGS neutrino beam,is reported in this paper. In order to reduce background due to latent tracks collected before installation in the detector,on-site large-scale treatments of the emulsions (“refreshing”) have been applied. Changeable Sheet (CSd) packages,each made of a doublet of emulsion films,have been designed,assembled and coupled to the OPERA target units (“ECC bricks”). A device has been built to print X-ray spots for accurate interconnection both within the CSd and between the CSd and the related ECC brick. Sample emulsion films have been extensively scanned with state-of-the-art automated optical microscopes. Efficient track-matching and powerful background rejection have been achieved in tests with electronically tagged penetrating muons. Further improvement of in-doublet film alignment was obtained by matching the pattern of low-energy electron tracks. The commissioning of the overall OPERA alignment procedure is in progress

Published
2008

24. Study of the effects induced by lead on the emulsion films of the OPERA experiment

Author

Anokhina, A, Aoki, S, Ariga, A, Arrabito, L, Autiero, D, Badertscher, A, Bay, F, Bergnoli, A, Bersani Greggio, F, Besnier, M, Bick, D, Bozza, C, Brugiere, T, Brugnera, R, Brunetti, G, Buontempo, S, Carrara, E, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chon-Sen, N, Chukanov, A, Consiglio, L, Cozzi, M, Dal Corso, F, D'Amato, G, D'Ambrosio, N, De Lellis, G, Déclais, Y, De Serio, M, Di Capua, F, Di Ferdinando, D, Di Giovanni, A, Di Marco, N, Di Troia, C, Dmitrievski, S, Dominjon, A, Dracos, M, Duchesneau, D, Dulach, B, Dusini, S, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Felici, G, Ferber, T, Fini, R, Franceschi, A, Fukuda, T, Fukushima, C, Galkin, V, Garfagnini, A, Giacomelli, G, Giorgini, M, Goellnitz, C, Golubkov, D, Gornoushkin, Y, Grella, G, Grianti, F, Guler, M, Gusev, G, Gustavino, C, Hagner, C, Hara, T, Hierholzer, M, Hiramatsu, S, Hoshino, K, Ieva, M, Jakovcic, K, Janicsko Csathy, J, Janutta, B, Jollet, C, Juget, F, Kawai, T, Kazuyama, M, Kim, S, Kimura, M, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Laktineh, I, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Lutter, G, Manai, K, Mandrioli, G, Manzoor, S, Marotta, A, Marteau, J, Matsuoka, H, Mauri, N, Meisel, F, Meregaglia, A, Messina, M, Migliozzi, P, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakamura, T, Nakano, T, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Osedlo, V, Ossetski, D, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Roganova, T, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryazhskaya, O, Ryzhikov, D, Sato, Y, Sato, O, Saveliev, V, Sazhina, G, Schembri, A, Scotto Lavina, L, Shibuya, H, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Sugonyaev, V, Taira, Y, Takahashi, S, Tenti, M, Terranova, F, Tioukov, V, Togo, V, Tolun, P, Tsarev, V, Tufanli, S, Ushida, N, Valieri, C, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Wurtz, J, Yoon, C, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Anokhina, A., Aoki, S., Ariga, A., Arrabito, L., Autiero, D., Badertscher, A., Bay, F., Bergnoli, A., Bersani Greggio, F., Besnier, M., Bick, D., Bozza, C., Brugiere, T., Brugnera, R., Brunetti, G., Buontempo, S., Carrara, E., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Consiglio, L., Cozzi, M., Dal Corso, F., D'Amato, G., D'Ambrosio, N., De Lellis, G., Déclais, Y., De Serio, M., Di Capua, F., Di Ferdinando, D., Di Giovanni, A., Di Marco, N., Di Troia, C., Dmitrievski, S., Dominjon, A., Dracos, M., Duchesneau, D., Dulach, B., Dusini, S., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Felici, G., Ferber, T., Fini, R., Franceschi, A., Fukuda, T., Fukushima, C., Galkin, V. I., Galkin, V. A., Garfagnini, A., Giacomelli, G., Giorgini, M., Goellnitz, C., Golubkov, D., Gornoushkin, Y., Grella, G., Grianti, F., Guler, M., Gusev, G., Gustavino, C., Hagner, C., Hara, T., Hierholzer, M., Hiramatsu, S., Hoshino, K., Ieva, M., Jakovcic, K., Janicsko Csathy, J., Janutta, B., Jollet, C., Juget, F., Kawai, T., Kazuyama, M., Kim, S. H., Kimura, M., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Laktineh, I., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Lutter, G., Manai, K., Mandrioli, G., Manzoor, S., Marotta, A., Marteau, J., Matsuoka, H., Mauri, N., Meisel, F., Meregaglia, A., Messina, M., Migliozzi, P., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakamura, T., Nakano, T., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Osedlo, V., Ossetski, D., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, Fabio, Roganova, T., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Ryzhikov, D., Sato, Y., Sato, O., Saveliev, V., Sazhina, G., Schembri, A., Scotto Lavina, L., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Sugonyaev, V., Taira, Y., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Togo, V., Tolun, P., Tsarev, V., Tufanli, S., Ushida, N., Valieri, C., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Wurtz, J., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., Zimmermann, R., Anokhina, A, Aoki, S, Ariga, A, Arrabito, L, Autiero, D, Badertscher, A, Bay, F, Bergnoli, A, Bersani Greggio, F, Besnier, M, Bick, D, Bozza, C, Brugiere, T, Brugnera, R, Brunetti, G, Buontempo, S, Carrara, E, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chon-Sen, N, Chukanov, A, Consiglio, L, Cozzi, M, Dal Corso, F, D'Amato, G, D'Ambrosio, N, De Lellis, G, Déclais, Y, De Serio, M, Di Capua, F, Di Ferdinando, D, Di Giovanni, A, Di Marco, N, Di Troia, C, Dmitrievski, S, Dominjon, A, Dracos, M, Duchesneau, D, Dulach, B, Dusini, S, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Felici, G, Ferber, T, Fini, R, Franceschi, A, Fukuda, T, Fukushima, C, Galkin, V, Garfagnini, A, Giacomelli, G, Giorgini, M, Goellnitz, C, Golubkov, D, Gornoushkin, Y, Grella, G, Grianti, F, Guler, M, Gusev, G, Gustavino, C, Hagner, C, Hara, T, Hierholzer, M, Hiramatsu, S, Hoshino, K, Ieva, M, Jakovcic, K, Janicsko Csathy, J, Janutta, B, Jollet, C, Juget, F, Kawai, T, Kazuyama, M, Kim, S, Kimura, M, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Laktineh, I, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Lutter, G, Manai, K, Mandrioli, G, Manzoor, S, Marotta, A, Marteau, J, Matsuoka, H, Mauri, N, Meisel, F, Meregaglia, A, Messina, M, Migliozzi, P, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakamura, T, Nakano, T, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Osedlo, V, Ossetski, D, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Roganova, T, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryazhskaya, O, Ryzhikov, D, Sato, Y, Sato, O, Saveliev, V, Sazhina, G, Schembri, A, Scotto Lavina, L, Shibuya, H, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Sugonyaev, V, Taira, Y, Takahashi, S, Tenti, M, Terranova, F, Tioukov, V, Togo, V, Tolun, P, Tsarev, V, Tufanli, S, Ushida, N, Valieri, C, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Wurtz, J, Yoon, C, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Anokhina, A., Aoki, S., Ariga, A., Arrabito, L., Autiero, D., Badertscher, A., Bay, F., Bergnoli, A., Bersani Greggio, F., Besnier, M., Bick, D., Bozza, C., Brugiere, T., Brugnera, R., Brunetti, G., Buontempo, S., Carrara, E., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Consiglio, L., Cozzi, M., Dal Corso, F., D'Amato, G., D'Ambrosio, N., De Lellis, G., Déclais, Y., De Serio, M., Di Capua, F., Di Ferdinando, D., Di Giovanni, A., Di Marco, N., Di Troia, C., Dmitrievski, S., Dominjon, A., Dracos, M., Duchesneau, D., Dulach, B., Dusini, S., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Felici, G., Ferber, T., Fini, R., Franceschi, A., Fukuda, T., Fukushima, C., Galkin, V. I., Galkin, V. A., Garfagnini, A., Giacomelli, G., Giorgini, M., Goellnitz, C., Golubkov, D., Gornoushkin, Y., Grella, G., Grianti, F., Guler, M., Gusev, G., Gustavino, C., Hagner, C., Hara, T., Hierholzer, M., Hiramatsu, S., Hoshino, K., Ieva, M., Jakovcic, K., Janicsko Csathy, J., Janutta, B., Jollet, C., Juget, F., Kawai, T., Kazuyama, M., Kim, S. H., Kimura, M., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Laktineh, I., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Lutter, G., Manai, K., Mandrioli, G., Manzoor, S., Marotta, A., Marteau, J., Matsuoka, H., Mauri, N., Meisel, F., Meregaglia, A., Messina, M., Migliozzi, P., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakamura, T., Nakano, T., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Osedlo, V., Ossetski, D., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, Fabio, Roganova, T., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Ryzhikov, D., Sato, Y., Sato, O., Saveliev, V., Sazhina, G., Schembri, A., Scotto Lavina, L., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Sugonyaev, V., Taira, Y., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Togo, V., Tolun, P., Tsarev, V., Tufanli, S., Ushida, N., Valieri, C., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Wurtz, J., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.

Abstract

The OPERA neutrino oscillation experiment is based on the use of the Emulsion Cloud Chamber (ECC). In the OPERA ECC, nuclear emulsion films acting as very high precision tracking detectors are interleaved with lead plates providing a massive target for neutrino interactions. We report on studies related to the effects occurring from the contact between emulsion and lead. A low radioactivity lead is required in order to minimize the number of background tracks in emulsions and to achieve the required performance in the reconstruction of neutrino events. It was observed that adding other chemical elements to the lead, in order to improve the mechanical properties, may significantly increase the level of radioactivity on the emulsions. A detailed study was made in order to choose a lead alloy with good mechanical properties and an appropriate packing technique so as to have a low enough effective radioactivity. © 2008 IOP Publishing Ltd and SISSA.

Published
2008

25. Observation of a first v(tau) candidate in the OPERA experiment in the CNGS beam

Author

Agafonova, N, Aleksandrov, A, Altinok, O, Ambrosio, M, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Bagulya, A, Bendhabi, A, Bertolin, A, Besnier, M, Bick, D, Boyarkin, V, Bozza, C, Brugière, T, Brugnera, R, Brunet, F, Brunetti, G, Buontempo, S, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chon-Sen, N, Chukanov, A, Ciesielski, R, Dal Corso, F, D'Ambrosio, N, Declais, Y, del Amo Sanchez, P, De Lellis, G, De Serio, M, Di Capua, F, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Di Giovanni, A, Dmitrievsky, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L. S, Favier, J, Ferber, T, Fini, R. A, Frekers, D, Fukuda, T, Galkin, V, Garfagnini, A, Giacomelli, G, Giorgini, M, Goldberg, J, Göllnitz, C, Golubkov, D, Goncharova, L, Gornushkin, Y, Grella, G, Grianti, F, Guler, A. M, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hoshino, K, Ieva, M, Ishida, H, Ishiguro, K, Jakovcic, K, Jollet, C, Juget, F, Kamiscioglu, M, Kawada, J, Kazuyama, M, Kim, S. H, Kimura, M, Kitagawa, N, Klicek, B, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Kubota, H, Lazzaro, C, Lenkeit, J, Lippi, I, Ljubicic, A, Longhin, A, Lutter, G, Malgin, A, Mandrioli, G, Mannai, K, Marotta, A, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M. T, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Nakatsuka, Y, Naumov, D, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Olchevsky, A, Omura, T, Orlova, G, Osedlo, V, Paniccia, M, Paoloni, A, Park, B. D, Park, I. G, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Repellin, J. P, Rescigno, R, Roganova, T, Rokujo, H, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sakatani, Y, Sato, O, Sato, Y, Schembri, A, Schmidt-Parzefall, W, Schroeder, H, Scotto Lavina, L, Sheshukov, A, Shibuya, H, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J. S, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Suzuki, K, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Trabelsi, A, Tran, T, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J. -L, Wilquet, G, Wonsak, B, Yakushev, V, Yoon, C. S, Yoshida, J, Yoshioka, T, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Agafonova, N, Aleksandrov, A, Altinok, O, Ambrosio, M, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Bagulya, A, Bendhabi, A, Bertolin, A, Besnier, M, Bick, D, Boyarkin, V, Bozza, C, Brugière, T, Brugnera, R, Brunet, F, Brunetti, G, Buontempo, S, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chon-Sen, N, Chukanov, A, Ciesielski, R, Dal Corso, F, D'Ambrosio, N, Declais, Y, del Amo Sanchez, P, De Lellis, G, De Serio, M, Di Capua, F, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Di Giovanni, A, Dmitrievsky, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Ferber, T, Fini, R, Frekers, D, Fukuda, T, Galkin, V, Garfagnini, A, Giacomelli, G, Giorgini, M, Goldberg, J, Göllnitz, C, Golubkov, D, Goncharova, L, Gornushkin, Y, Grella, G, Grianti, F, Guler, A, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hoshino, K, Ieva, M, Ishida, H, Ishiguro, K, Jakovcic, K, Jollet, C, Juget, F, Kamiscioglu, M, Kawada, J, Kazuyama, M, Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Kubota, H, Lazzaro, C, Lenkeit, J, Lippi, I, Ljubicic, A, Longhin, A, Lutter, G, Malgin, A, Mandrioli, G, Mannai, K, Marotta, A, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Nakatsuka, Y, Naumov, D, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Olchevsky, A, Omura, T, Orlova, G, Osedlo, V, Paniccia, M, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Repellin, J, Rescigno, R, Roganova, T, Rokujo, H, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sakatani, Y, Sato, O, Sato, Y, Schembri, A, Schmidt-Parzefall, W, Schroeder, H, Scotto Lavina, L, Sheshukov, A, Shibuya, H, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Suzuki, K, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Trabelsi, A, Tran, T, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yakushev, V, Yoon, C, Yoshida, J, Yoshioka, T, Zaitsev, Y, Zemskova, S, Zghiche, A, and Zimmermann, R

Subjects
CNGS, Oscillation, Neutrino, OPERA, Appearance, Tau
Abstract

The OPERA neutrino detector in the underground Gran Sasso Laboratory (LNGS) has been designed to perform the first detection of neutrino oscillations in direct appearance mode through the study of the v(mu) -> v(tau) channel. The hybrid apparatus consists of an emulsion/lead target complemented by electronic detectors and it is placed in the high energy long-baseline CERN to LNGS beam (CNGS) 730 km away from the neutrino source. Runs with CNGS neutrinos were successfully carried out in 2008 and 2009. After a brief description of the beam, the experimental setup and the procedures used for the analysis of the neutrino events, we describe the topology and kinematics of a first candidate v(tau) charged-current event satisfying the kinematical selection criteria. The background calculations and their cross-check are explained in detail and the significance of the event is assessed. (C) 2010 Elsevier B.V. All rights reserved

Published
2010

26. Observation of a first of a first ντ candidate event in the OPERA experiment in the CNGS beam

Author

Agafonova, N., Aleksandrov, A., Altinok, O., Ambrosio, M., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Bagulya, A., Bendhabi, A., Bertolin, A., Besnier, M., Bick, D., Boyarkin, V., Bozza, C., Brugière, T., Brugnera, R., Brunet, F., Brunetti, G., Buontempo, S., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon Sen, N., Chukanov, A., Ciesielski, R., Corso, F. Dal, D'Ambrosio, N., Declais, Y., del Amo Sanchez, P., De Lellis, G., De Serio, M., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Di Giovanni, A., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Ferber, T., Fini, R. A., Frekers, D., Fukuda, T., Galkin, V., Garfagnini, A., Giacomelli, G., Giorgini, M., Goldberg, J., Göllnitz, C., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Guler, A. M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hoshino, K., Ieva, M., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Juget, F., Kamiscioglu, M., Kawada, J., Kazuyama, M., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Kubota, H., Lazzaro, C., Lenkeit, J., Lippi, I., Ljubicic, A., Longhin, A., Lutter, G., Malgin, A., Mandrioli, G., Mannai, K., Marotta, A., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Olchevsky, A., Omura, T., Orlova, G., Osedlo, V., Paniccia, M., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, F., Repellin, J. P., Rescigno, R., Roganova, T., Rokujo, H., Romano, G., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sakatani, Y., Sato, O., Sato, Y., Schembri, A., Schmidt Parzefall, W., Schroeder, H., Scotto Lavina, L., Sheshukov, A., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Trabelsi, A., Tran, T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yakushev, V., Yoon, C. S., Yoshida, J., Yoshioka, T., Zaitsev, Y., Zemskova, S., Zghiche, A., Zimmermann, R., DI CAPUA, FRANCESCO, Agafonova, N., Aleksandrov, A., Altinok, O., Ambrosio, M., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Bagulya, A., Bendhabi, A., Bertolin, A., Besnier, M., Bick, D., Boyarkin, V., Bozza, C., Brugière, T., Brugnera, R., Brunet, F., Brunetti, G., Buontempo, S., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon Sen, N., Chukanov, A., Ciesielski, R., Corso, F. Dal, D'Ambrosio, N., Declais, Y., del Amo Sanchez, P., De Lellis, G., De Serio, M., DI CAPUA, Francesco, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Di Giovanni, A., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Ferber, T., Fini, R. A., Frekers, D., Fukuda, T., Galkin, V., Garfagnini, A., Giacomelli, G., Giorgini, M., Goldberg, J., Göllnitz, C., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Guler, A. M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hoshino, K., Ieva, M., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Juget, F., Kamiscioglu, M., Kawada, J., Kazuyama, M., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Kubota, H., Lazzaro, C., Lenkeit, J., Lippi, I., Ljubicic, A., Longhin, A., Lutter, G., Malgin, A., Mandrioli, G., Mannai, K., Marotta, A., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Olchevsky, A., Omura, T., Orlova, G., Osedlo, V., Paniccia, M., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, F., Repellin, J. P., Rescigno, R., Roganova, T., Rokujo, H., Romano, G., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sakatani, Y., Sato, O., Sato, Y., Schembri, A., Schmidt Parzefall, W., Schroeder, H., Scotto Lavina, L., Sheshukov, A., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Trabelsi, A., Tran, T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yakushev, V., Yoon, C. S., Yoshida, J., Yoshioka, T., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.

Subjects
CNGS, Oscillation, Neutrino, OPERA, Appearance, Tau
Abstract

The OPERA neutrino detector in the underground Gran Sasso Laboratory (LNGS) has been designed to perform the first detection of neutrino oscillations in direct appearance mode through the study of the νμ→ντ channel. The hybrid apparatus consists of an emulsion/lead target complemented by electronic detectors and it is placed in the high energy long-baseline CERN to LNGS beam (CNGS) 730 km away from the neutrino source. Runs with CNGS neutrinos were successfully carried out in 2008 and 2009. After a brief description of the beam, the experimental setup and the procedures used for the analysis of the neutrino events, we describe the topology and kinematics of a first candidate ?? charged-current event satisfying the kinematical selection criteria. The background calculations and their cross-check are explained in detail and the significance of the event is assessed.

Published
2010

27. The Angular Matching Method for the Muon Charge Sign Measurement in the OPERA Experiment

Author

Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Buonaura, A., Buontempo, S., Buttner, B., Chernyavsky, M., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., del Amo Sanchez, P., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Fini, R.A., Fukuda, T., Galati, G., Garfagnini, A., Giacomelli, G., Gollnitz, C., Goldberg, J., Goloubkov, D., Gornushkin, Y., Grella, G., Guler, M., Gustavino, C., Hagner, C., Hara, T., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Kawada, J., Kim, J.H., Kim, S.H., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Malenica, M., Mandrioli, G., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Meyer, M., Mikado, S., Monacelli, P., Montesi, M.C., Morishima, K., Muciaccia, M.T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B.D., Park, I.G., Pasqualini, L., Pastore, A., Patrizii, L., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pupilli, F., Roda, M., Rokujo, H., Roganova, T., Rosa, G., Rostovtseva, I., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Shakiryanova, I., Shchedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S.M., Stipcevic, M., Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J.L., Wilquet, G., Wonsak, B., Yoon, C.S., Zaitsev, Y., Zemskova, S., and Zghiche, A.

Subjects
Physics::Instrumentation and Detectors, High Energy Physics::Experiment, Detectors and Experimental Techniques
Abstract

The long baseline neutrino oscillation experiment OPERA is searching for $\nu_{\tau}$ appearance in the CNGS beam of $\nu_{\mu}$. The task of the two muon spectrometers of the OPERA detector is to clarify the signature of a muonic $\tau$ decay ($\mu^{-}$) and to reduce background originating from charmed particles produced in $\nu_{\mu}$ interactions ($\mu^{+}$). Based on geometric considerations a method called angular matching method is developed which allows to improve the charge sign determination. In a realistic beam Monte Carlo simulation it is shown that the fraction of misidentified muon charges can be reduced by 39%. A first estimation of the fraction of misidentified muon charges with tracks crossing one spectrometer is presented and compared with real data. Furthermore the potential of the new method is demonstrated as it can lead to an improvement of one order of magnitude concerning the fraction of misidentified muon charges. The OPERA long-baseline neutrino-oscillation experiment has observed the direct appearance of ν(τ) in the CNGS ν(μ) beam. Two large muon magnetic spectrometers are used to identify muons produced in the τ leptonic decay and in ν(μ) CC interactions by measuring their charge and momentum. Besides the kinematic analysis of the τ decays, background resulting from the decay of charmed particles produced in ν(μ) CC interactions is reduced by efficiently identifying the muon track. A new method for the charge sign determination has been applied, via a weighted angular matching of the straight track-segments reconstructed in the different parts of the dipole magnets. Results obtained for Monte Carlo and real data are presented. Comparison with a method where no matching is used shows a significant reduction of up to 40% of the fraction of wrongly determined charges. The OPERA long-baseline neutrino-oscillation experiment has observed the direct appearance of $\nu_\tau$ in the CNGS $\nu_\mu$ beam. Two large muon magnetic spectrometers are used to identify muons produced in the $\tau$ leptonic decay and in $\nu_\mu^{CC}$ interactions by measuring their charge and momentum. Besides the kinematic analysis of the $\tau$ decays, background resulting from the decay of charmed particles produced in $\nu_\mu^{CC}$ interactions is reduced by efficiently identifying the muon track. A new method for the charge sign determination has been applied, via a weighted angular matching of the straight track-segments reconstructed in the different parts of the dipole magnets. Results obtained for Monte Carlo and real data are presented. Comparison with a method where no matching is used shows a significant reduction of up to 40\% of the fraction of wrongly determined charges.

Published
2014

28. Evidence for νμ→ντ appearance in the CNGS neutrino beam with the OPERA experiment

Author

Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Asada, T., Autiero, D., Ben Dhahbi, A., Badertscher, A., Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Brunet, F., Brunetti, G., Buonaura, A., Buontempo, S., Buttner, B., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Del Amo Sanchez, P., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Favier, J., Ferber, T., Ferone, G., Fini, R. a., Fukuda, T., Galati, G., Garfagnini, A., Giacomelli, G., Goellnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gustavino, C., Hagner, C., Hakamata, K., Hara, T., Hayakawa, T., Hierholzer, M., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Ishikawa, M., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Katsuragawa, T., Kawada, J., Kawahara, H., Kim, J. h., Kim, S. h., Kimura, M., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, Pier Ferruccio, Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Migliozzi, P., Mikado, S., Miyanishi, M., Miyashita, E., Monacelli, P., Montesi, M. c., Morishima, K., Muciaccia, M. t., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. d., Park, I. g., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roda, M., Rokujo, H., Roganova, T., Rosa, Giovanni, Rostovtseva, I., Rubbia, A., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Schmidt Parzefal, W., Shakiryanova, I., Shchedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. m., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. l., Wilquet, G., Wonsak, B., Yoon, C. s., Yoshida, J., Yoshimoto, M., Zaitsev, Y., Zemskova, S., and Zghiche, A.

Subjects
neutrino oscillation
Published
2014

29. Evidence for $��_��\to ��_��$ appearance in the CNGS neutrino beam with the OPERA experiment

Author

Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Asada, T., Autiero, D., Dhahbi, A. Ben, Badertscher, A., Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Brunet, F., Brunetti, G., Buonaura, A., Buontempo, S., Buettner, B., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. Del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Favier, J., Ferber, T., Ferone, G., Fini, R. A., Fukuda, T., Galati, G., Garfagnini, A., Giacomelli, G., Goellnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gustavino, C., Hagner, C., Hakamata, K., Hara, T., Hayakawa, T., Hierholzer, M., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Ishikawa, M., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Katsuragawa, T., Kawada, J., Kawahara, H., Kim, J. H., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Migliozzi, P., Mikado, S., Miyanishi, M., Miyashita, E., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roda, M., Rokujo, H., Roganova, T., Rosa, G., Rostovtseva, I., Rubbia, A., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Schmidt-Parzefal, W., Shakiryanova, I., Shchedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yoon, C. S., Yoshida, J., Yoshimoto, M., Zaitsev, Y., Zemskova, S., and Zghiche, A.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det)
Abstract

The OPERA experiment is designed to search for $��_�� \rightarrow ��_��$ oscillations in appearance mode i.e. through the direct observation of the $��$ lepton in $��_��$ charged current interactions. The experiment has taken data for five years, since 2008, with the CERN Neutrino to Gran Sasso beam. Previously, two $��_��$ candidates with a $��$ decaying into hadrons were observed in a sub-sample of data of the 2008-2011 runs. Here we report the observation of a third $��_��$ candidate in the $��^-\to��^-$ decay channel coming from the analysis of a sub-sample of the 2012 run. Taking into account the estimated background, the absence of $��_�� \rightarrow ��_��$ oscillations is excluded at the 3.4 $��$ level., 9 pages, 5 figures, 1 tables

Published
2014
Full Text
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30. Emulsion sheet doublets as interface trackers for the OPERA experiment

Author

Anokhina, A., Aoki, S., Ariga, A., Arrabito, L., Autiero, D., Badertscher, A., Bay, F., Greggio, F.Bersani, Bertolin, A., Besnier, M., Bick, D., Bozza, C., Brugiere, T., Brugnera, R., Brunetti, G., Buontempo, S., Carrara, E., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Consiglio, L., Cozzi, M., Cuha, V., Dal Corso, F., D'Amato, G., D'Ambrosio, N., De Lellis, G., Declais, Y., De Serio, M., Di Capua, F., Di Ferdinando, D., Di Giovanni, A., Di Marco, N., Di Troia, C., Dmitrievski, S., Dominjon, A., Dracos, Marcos, Duchesneau, D., Dusini, S., Ebert, J., Egorov, O., Enikeev, R., Ereditato, Antonio, Esposito, L.S., Favier, J., Felici, G., Ferber, T., Fini, R., Frekers, D., Fukuda, T., Galkin, V.I., Galkin, V.A., Garfagnini, A., Giacomelli, G., Giorgini, M., Goellnitz, C., Goldberg, J., Golubkov, D., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gusev, G., Gustavino, C., Hagner, Caren, Hara, T., Hierholzer, M., Hiramatsu, S., Hoshino, Kaoru, Ieva, M., Jakovcic, K., Janicsko Csathy, J., Janutta, B., Jollet, C., Juget, F., Kawai, T., Kazuyama, M., Kim, S.H., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Laktineh, I., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, Andrea, Lutter, G., Manai, K., Mandrioli, G., Marotta, A., Marteau, J., Matsuo, T., Matsuoka, H., Mauri, N., Meisel, F., Meregaglia, A., Messina, M., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, Piero, Morishima, Kunihiro, Moser, U., Muciaccia, Maria Teresa, Naganawa, N., Naka, T., Nakamura, M., Nakamura, T., Nakano, T., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Osedlo, V., Ossetski, D., Paoloni, A., Park, B.D., Park, I.G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, Klaus P., Publichenko, P., Pupilli, F., Roganova, T., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Ryzhikov, D., Sato, O., Sato, Y., Saveliev, V., Sazhina, G., Schembri, A., Scotto Lavina, L., Shibuya, H., Simone, S., Sioli, Max, Sirignano, C., Sirri, G., Song, J.S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, Paolo Emilio, Sugonyaev, V., Taira, Y., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Tsarev, V., Tufanli, S., Ushida, N., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J.L., Wilquet, G., Wonsak, B., Wurtz, J., Yoon, C.S., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, Amina, Zimmermann, R., Anokhina, A, Aoki, S, Ariga, A, Arrabito, L, Autiero, D, Badertscher, A, Bay, F, Greggio, F, Bertolin, A, Besnier, M, Bick, D, Bozza, C, Brugiere, T, Brugnera, R, Brunetti, G, Buontempo, S, Carrara, E, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chon-Sen, N, Chukanov, A, Consiglio, L, Cozzi, M, Cuha, V, Dal Corso, F, D'Amato, G, D'Ambrosio, N, De Lellis, G, Déclais, Y, De Serio, M, Di Capua, F, Di Ferdinando, D, Di Giovanni, A, Di Marco, N, Di Troia, C, Dmitrievski, S, Dominjon, A, Dracos, M, Duchesneau, D, Dusini, S, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Felici, G, Ferber, T, Fini, R, Frekers, D, Fukuda, T, Galkin, V, Garfagnini, A, Giacomelli, G, Giorgini, M, Goellnitz, C, Goldberg, J, Golubkov, D, Gornushkin, Y, Grella, G, Grianti, F, Guler, M, Gusev, G, Gustavino, C, Hagner, C, Hara, T, Hierholzer, M, Hiramatsu, S, Hoshino, K, Ieva, M, Jakovcic, K, Janicsko Csathy, J, Janutta, B, Jollet, C, Juget, F, Kawai, T, Kazuyama, M, Kim, S, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Laktineh, I, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Lutter, G, Manai, K, Mandrioli, G, Marotta, A, Marteau, J, Matsuo, T, Matsuoka, H, Mauri, N, Meisel, F, Meregaglia, A, Messina, M, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakamura, T, Nakano, T, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Osedlo, V, Ossetski, D, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Roganova, T, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryazhskaya, O, Ryzhikov, D, Sato, O, Sato, Y, Saveliev, V, Sazhina, G, Schembri, A, Scotto Lavina, L, Shibuya, H, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Sugonyaev, V, Taira, Y, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Tsarev, V, Tufanli, S, Ushida, N, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yoon, C, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), OPERA, A. ANOKHINA, S. AOKI, A. ARIGA, L. ARRABITO, D. AUTIERO, A. BADERTSCHER, F. BAY, F. BERSANI GREGGIO, A. BERTOLIN, M. BESNIER, D. BICK, C. BOZZA, T. BRUGIERE, R. BRUGNERA, G. BRUNETTI, S. BUONTEMPO, E. CARRARA, A. CAZES, L. CHAUSSARD, M. CHERNYAVSKY, V. CHIARELLA, N. CHON-SEN, A. CHUKANOV, L. CONSIGLIO, M. COZZI, V. CUHA, F. DAL CORSO, G. D’AMATO, N. D’AMBROSIO, G. DE LELLIS, Y. DÉCLAIS, M. DE SERIO, F. DI CAPUA, D. DI FERDINANDO, A. DI GIOVANNI, N. DI MARCO, C. DI TROIA, S. DMITRIEVSKI, A. DOMINJON, M. DRACOS, D. DUCHESNEAU, S. DUSINI, J. EBERT, O. EGOROV, R. ENIKEEV, A. EREDITATO, L.S. ESPOSITO, J. FAVIER, G. FELICI, T. FERBER, R. FINI, D. FREKERS, T. FUKUDA, V.I. GALKIN, V.A. GALKIN, A. GARFAGNINI, G. GIACOMELLI, M. GIORGINI, C. GOELLNITZ, J. GOLDBERG, D. GOLUBKOV, Y. GORNUSHKIN, G. GRELLA, F. GRIANTI, M. GULER, G. GUSEV, C. GUSTAVINO, C. HAGNER, T. HARA, M. HIERHOLZER, S. HIRAMATSU, K. HOSHINO, M. IEVA, K. JAKOVCIC, J. JANICSKO CSATHY, B. JANUTTA, C. JOLLET, F. JUGET, T. KAWAI, M. KAZUYAMA, S. H. KIM, J. KNUESEL, K. KODAMA, M. KOMATSU, U. KOSE, I. KRESLO, I. LAKTINEH, C. LAZZARO, J. LENKEIT, A. LJUBICIC, A. LONGHIN, G. LUTTER, K. MANAI, G. MANDRIOLI, A. MAROTTA, J. MARTEAU, T. MATSUO, H. MATSUOKA, N. MAURI, F. MEISEL, A. MEREGAGLIA, M. MESSINA, P. MIGLIOZZI, S. MIKADO, S. MIYAMOTO, P. MONACELLI, K. MORISHIMA, U. MOSER, M.T. MUCIACCIA, N. NAGANAWA, T. NAKA, M. NAKAMURA, T. NAKAMURA, T. NAKANO, V. NIKITINA, K. NIWA, Y. NONOYAMA, S. OGAWA, V. OSEDLO, D. OSSETSKI, A. PAOLONI, B.D. PARK, I.G. PARK, A. PASTORE, L. PATRIZII, E. PENNACCHIO, H. PESSARD, V. PILIPENKO, C. PISTILLO, N. POLUKHINA, M. POZZATO, K. PRETZL, P. PUBLICHENKO, F. PUPILLI, T. ROGANOVA, G. ROSA, I. ROSTOVTSEVA, A. RUBBIA, A. RUSSO, O. RYAZHSKAYA, D. RYZHIKOV, O. SATO, Y. SATO, V. SAVELIEV, G. SAZHINA, A. SCHEMBRI, L. SCOTTO LAVINA, H. SHIBUYA, S. SIMONE, M. SIOLI, C. SIRIGNANO, G. SIRRI, J. S. SONG, M. SPINETTI, L. STANCO, N. STARKOV, M. STIPCEVIC, T. STRAUSS, P. STROLIN, V. SUGONYAEV, Y. TAIRA, S. TAKAHASHI, M. TENTI, F. TERRANOVA, I. TEZUKA, V. TIOUKOV, P. TOLUN, V. TSAREV, S. TUFANLI, N. USHIDA, P. VILAIN, M. VLADIMIROV, L. VOTANO, J.L. VUILLEUMIER, G. WILQUET, B. WONSAK, C. S. YOON, J. YOSHIDA, Y. ZAITSEV, S. ZEMSKOVA, A. ZGHICHE, R. ZIMMERMANN, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), and Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Physics - Instrumentation and Detectors, Materials science, Microscope, FISICA DEL NEUTRINO, FOS: Physical sciences, Electron, 01 natural sciences, law.invention, Optics, law, Tau neutrino, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Detectors and Experimental Techniques, EMULSIONI NUCLEARI, Photographic emulsion, 010306 general physics, Instrumentation, Mathematical Physics, Interconnection, Detector design and construction technologies and material, 010308 nuclear & particles physics, business.industry, Detector, Instrumentation and Detectors (physics.ins-det), Sample (graphics), Particle tracking detector, Detector alignment and calibration methods (Lasers,Sources,Particle-beams), Large detector systems for particle and astroparticle physic, RIVELATORI IBRIDI, RIVELATORI DI PARTICELLE ELEMENTARI, Neutrino, business
Abstract

New methods for efficient and unambiguous interconnection between electronic counters and target units based on nuclear photographic emulsion films have been developed. The application to the OPERA experiment, that aims at detecting oscillations between mu neutrino and tau neutrino in the CNGS neutrino beam, is reported in this paper. In order to reduce background due to latent tracks collected before installation in the detector, on-site large-scale treatments of the emulsions ("refreshing") have been applied. Changeable Sheet (CSd) packages, each made of a doublet of emulsion films, have been designed, assembled and coupled to the OPERA target units ("ECC bricks"). A device has been built to print X-ray spots for accurate interconnection both within the CSd and between the CSd and the related ECC brick. Sample emulsion films have been extensively scanned with state-of-the-art automated optical microscopes. Efficient track-matching and powerful background rejection have been achieved in tests with electronically tagged penetrating muons. Further improvement of in-doublet film alignment was obtained by matching the pattern of low-energy electron tracks. The commissioning of the overall OPERA alignment procedure is in progress., Comment: 19 pages, 19 figures

Published
2008

31. Emulsion sheet doublets as interface trackers for the OPERA experiment

Author

Anokhina, A. w, Aoki, S. q, Ariga, A. y, Arrabito, L. s, Autiero, D. s, Badertscher, A. al, Bay, F. a, Greggio, F. G. ai, Bertolin, A. ad, Besnier, M. b, Bick, D. n, Bozza, C. ag, Brugiere, T. s, Brugnera, R. ae, Brunetti, G. h, Buontempo, S. z, Carrara, E. ae, Cazes, A. k, Chaussard, L. s, Chernyavsky, M. v, Chiarella, V. k, Chon Sen, N. ah, Chukanov, A. z, Consiglio, L. h, Cozzi, M. h, Cuha, V. a, Dal Corso, F. ad, D'Amato, G. ag, D'Ambrosio, N. c, De Lellis, G. aa, Déclais, Y. s, De Serio, M. e, z, Di Ferdinando, D. g, Di Giovanni, A. r, Di Marco, N. r, Di Troia, C. k, Dmitrievski, S. j, Dominjon, A. s, Dracos, M. ah, Duchesneau, D. b, Dusini, S. ad, Ebert, J. n, Egorov, O. u, Enikeev, R. t, Ereditato, A. f, Esposito, L. S. c, Favier, J. b, Felici, G. k, Ferber, T. n, Fini, R. e, Frekers, D. x, Fukuda, T. y, Galkin, V. I. w, Galkin, V. A. ac, Garfagnini, A. ae, Giacomelli, G. h, Giorgini, M. h, Goellnitz, C. n, Goldberg, J. m, Golubkov, D. u, Gornushkin, Y. j, Grella, Grianti, F. ai, Guler, M. a, Gusev, G. v, Gustavino, C. c, Hagner, C. n, Hara, T. q, Hierholzer, M. n, Hiramatsu, S. y, Hoshino, K. y, Ieva, M. e, Jakovcic, K. ak, Janicsko Csathy, J. ab, Janutta, B. n, Jollet, C. ah, Juget, F. ab, Kawai, T. y, Kazuyama, M. y, Kim, S. H. oam, Knuesel, J. f, Kodama, K. p, Komatsu, M. y, Kose, U. a, Kreslo, I. f, Laktineh, I. s, Lazzaro, C. al, Lenkeit, J. n, Ljubicic, A. ak, Longhin, Lutter, G. ab, Manai, K. s, Mandrioli, G. g, Marotta, A. z, Marteau, J. s, Matsuo, T. l, Matsuoka, H. y, Mauri, N. h, Meisel, Meregaglia, A. ah, Messina, M. f, Migliozzi, P. z, Mikado, S. lan, Miyamoto, S. y, Monacelli, P. r, Morishima, K. y, Moser, U. f, Muciaccia, M. T. d, Naganawa, N. y, Naka, T. y, Nakamura, M. y, Nakamura, T. y, Nakano, T. y, Nikitina, V. w, Niwa, K. y, Nonoyama, Y. y, Ogawa, S. l, Osedlo, V. w, Ossetski, D. ac, Paoloni, A. k, Park, B. D. o, Park, I. G. o, Pastore, A. d, Patrizii, L. g, Pennacchio, E. s, Pessard, H. b, Pilipenko, V. x, Pistillo, C. f, Polukhina, N. v, Pozzato, M. h, Pretzl, K. f, Publichenko, P. w, Pupilli, F. r, Roganova, T. w, Rosa, G. af, Rostovtseva, I. u, Rubbia, Russo, A. z, Ryazhskaya, O. t, Ryzhikov, Sato, O. y, Sato, Y. aj, Saveliev, V. ac, Sazhina, G. w, Schembri, A. c, Scotto Lavina, L. z, Shibuya, H. l, Simone, S. d, Sioli, M. h, Sirignano, Sirri, G. g, Song, J. S. o, Spinetti, M. k, Stanco, L. ad, Starkov, N. v, Stipcevic, M. ak, Strauss, T. al, Strolin, P. aa, Sugonyaev, V. ad, Taira, Y. y, Takahashi, S. y, Tenti, M. h, Terranova, F. k, Tezuka, I. aj, Tioukov, V. z, Tolun, P. a, Tsarev, V. v, Tufanli, S. a, Ushida, N. p, Vilain, P. i, Vladimirov, M. v, Votano, L. k, Vuilleumier, J. L. ab, Wilquet, G. i, Wonsak, B. n, Yoon, C. S. o, Yoshida, J. y, Zaitsev, Y. u, Zemskova, S. j, Zghiche, A. b, Zimmermann, R. n., DI CAPUA, FRANCESCO, Anokhina, A. w, Aoki, S. q, Ariga, A. y, Arrabito, L., Autiero, D., Badertscher, A., Al, Bay, F. a, Greggio, F. G., Ai, Bertolin, A., Ad, Besnier, M. b, Bick, D. n, Bozza, C., Ag, Brugiere, T., Brugnera, R., Ae, Brunetti, G. h, Buontempo, S. z, Carrara, E., Ae, Cazes, A. k, Chaussard, L., Chernyavsky, M. v, Chiarella, V. k, Chon, Sen, N., Ah, Chukanov, A. z, Consiglio, L. h, Cozzi, M. h, Cuha, V. a, Dal, Corso, F., Ad, D'Amato, G., Ag, D'Ambrosio, N. c, De, Lelli, G., Aa, Déclais, Y., De, Serio, M., E., DI CAPUA, Francesco, Z, Di, Ferdinando, D., G., Di, Giovanni, A., R., Di, Marco, N., R., Di, Troia, C. k, Dmitrievski, S. j, Dominjon, A. s, Draco, M., Ah, Duchesneau, D. b, Dusini, S., Ad, Ebert, J. n, Egorov, O. u, Enikeev, R. t, Ereditato, A. f, Esposito, L. S. c, Favier, J. b, Felici, G. k, Ferber, T. n, Fini, R. e, Frekers, D. x, Fukuda, T. y, Galkin, V. I. w, Galkin, V. A., Ac, Garfagnini, A., Ae, Giacomelli, G. h, Giorgini, M. h, Goellnitz, C. n, Goldberg, J. m, Golubkov, D. u, Gornushkin, Y. j, Grella, Grianti, F., Ai, Guler, M. a, Gusev, G. v, Gustavino, C. c, Hagner, C. n, Hara, T. q, Hierholzer, M. n, Hiramatsu, S. y, Hoshino, K. y, Ieva, M. e, Jakovcic, K., Ak, Janicsko, Csathy, J., Ab, Janutta, B. n, Jollet, C., Ah, Juget, F., Ab, Kawai, T. y, Kazuyama, M. y, Kim, S. H., Oam, Knuesel, J. f, Kodama, K. p, Komatsu, M. y, Kose, U. a, Kreslo, I. f, Laktineh, I., Lazzaro, C., Al, Lenkeit, J. n, Ljubicic, A., Ak, Longhin, Lutter, G., Ab, Manai, K., Mandrioli, G. g, Marotta, A. z, Marteau, J., Matsuo, T. l, Matsuoka, H. y, Mauri, N. h, Meisel, Meregaglia, A., Ah, Messina, M. f, Migliozzi, P. z, Mikado, S., Lan, Miyamoto, S. y, Monacelli, P. r, Morishima, K. y, Moser, U. f, Muciaccia, M. T. d, Naganawa, N. y, Naka, T. y, Nakamura, M. y, Nakamura, T. y, Nakano, T. y, Nikitina, V. w, Niwa, K. y, Nonoyama, Y. y, Ogawa, S. l, Osedlo, V. w, Ossetski, D., Ac, Paoloni, A. k, Park, B. D. o, Park, I. G. o, Pastore, A. d, Patrizii, L. g, Pennacchio, E., Pessard, H. b, Pilipenko, V. x, Pistillo, C. f, Polukhina, N. v, Pozzato, M. h, Pretzl, K. f, Publichenko, P. w, Pupilli, F. r, Roganova, T. w, Rosa, G., Af, Rostovtseva, I. u, Rubbia, Russo, A. z, Ryazhskaya, O. t, Ryzhikov, Sato, O. y, Sato, Y., Aj, Saveliev, V., Ac, Sazhina, G. w, Schembri, A. c, Scotto, Lavina, L. z, Shibuya, H. l, Simone, S. d, Sioli, M. h, Sirignano, Sirri, G. g, Song, J. S. o, Spinetti, M. k, Stanco, L., Ad, Starkov, N. v, Stipcevic, M., Ak, Strauss, T., Al, Strolin, P., Aa, Sugonyaev, V., Ad, Taira, Y. y, Takahashi, S. y, Tenti, M. h, Terranova, F. k, Tezuka, I., Aj, Tioukov, V. z, Tolun, P. a, Tsarev, V. v, Tufanli, S. a, Ushida, N. p, Vilain, P. i, Vladimirov, M. v, Votano, L. k, Vuilleumier, J. L., Ab, Wilquet, G. i, Wonsak, B. n, Yoon, C. S. o, Yoshida, J. y, Zaitsev, Y. u, Zemskova, S. j, Zghiche, A. b, and Zimmermann, R. n.

Subjects
Detector alignment and calibration methods (Lasers,Sources,Particle-beams), Detector design and construction technologies and material, Particle tracking detectors, Large detector systems for particle and astroparticle physic
Abstract

New methods for efficient and unambiguous interconnection between electronic position sensitive detectors and target units based on nuclear photographic emulsion films have been developed. The application to the OPERA experiment,that aims at detecting Vμ⇋Vτoscillations in the CNGS neutrino beam,is reported in this paper. In order to reduce background due to latent tracks collected before installation in the detector,on-site large-scale treatments of the emulsions (“refreshing”) have been applied. Changeable Sheet (CSd) packages,each made of a doublet of emulsion films,have been designed,assembled and coupled to the OPERA target units (“ECC bricks”). A device has been built to print X-ray spots for accurate interconnection both within the CSd and between the CSd and the related ECC brick. Sample emulsion films have been extensively scanned with state-of-the-art automated optical microscopes. Efficient track-matching and powerful background rejection have been achieved in tests with electronically tagged penetrating muons. Further improvement of in-doublet film alignment was obtained by matching the pattern of low-energy electron tracks. The commissioning of the overall OPERA alignment procedure is in progress.

Published
2008

32. Search for $��_��\rightarrow ��_e$ oscillations with the OPERA experiment in the CNGS beam

Author

OPERA Collaboration, Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Dhahbi, A. Ben, Bertolin, A., Bozza, C., Brugnera, R., Brunet, F., Brunetti, G., Buettner, B., Buontempo, S., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Ferber, T., Fini, R. A., Fukuda, T., Garfagnini, A., Giacomelli, G., Goellnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Grianti, F., Guler, A. M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Juget, F., Kamiscioglu, C., Kamiscioglu, M., Kawada, J., Kim, J. H., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Mancini-Terracciano, C., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F. W., Meregaglia, A., Migliozzi, P., Mikado, S., Minotti, A., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Niwa, K., Ogawa, S., Okateva, N., Olchevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roda, M., Roganova, T., Rokujo, H., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Sato, O., Sato, Y., Schchedrina, T., Schembri, A., Schmidt-Parzefall, W., Shakiryanova, I., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tolun, P., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. -L., Wilquet, G., Wonsak, B., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., and Zghiche, A.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences
Abstract

A first result of the search for \numu $\rightarrow$ \nue oscillations in the OPERA experiment, located at the Gran Sasso Underground Laboratory, is presented. The experiment looked for the appearance of \nue in the CNGS neutrino beam using the data collected in 2008 and 2009. Data are compatible with the non-oscillation hypothesis in the three-flavour mixing model. A further analysis of the same data constrains the non-standard oscillation parameters $��_{new}$ and $��m^2_{new}$ suggested by the LSND and MiniBooNE experiments. For large $��m^{2}_{new}$ values ($>$0.1 eV$^{2}$), the OPERA 90% C.L. upper limit on sin$^{2}(2��_{new})$ based on a Bayesian statistical method reaches the value $7.2 \times 10^{-3}$.

Published
2013
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33. New results on $��_��\to ��_��$ appearance with the OPERA experiment in the CNGS beam

Author

OPERA Collaboration, Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Asada, T., Autiero, D., Badertscher, A., Dhahbi, A. Ben, Bender, D., Bertolin, A., Bozza, C., Brugnera, R., Brunetti, G., Buettner, B., Buontempo, S., Chaussard, L., Chernyavskiy, M., Chiarella, V., Chukanov, A., Consiglio, L., D'Ambrosio, N., Sanchez, P. Del Amo, De Lellis, G., De Serio, M., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Ebert, J., Ereditato, A., Favier, J., Ferber, T., Fini, R. A., Fukuda, T., Garfagnini, A., Giacomelli, G., Goellnitz, C., Goldberg, J., Gornushkin, Y., Grella, G., Grianti, F., Guler, A. M., Gustavino, C., Hagner, C., Hakamata, K., Hara, T., Hayakawa, T., Hierholzer, M., Hollnagel, A., Hosseini, B., Ishida, H., Ishiguro, K., Ishikawa, M., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Katsuragawa, T., Kawahara, H., Kawada, J., Kim, J. H., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lenkeit, J., Ljubicic, A., Longhin, A., Loverre, P., Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Migliozzi, P., Mikado, S., Minotti, A., Miyanishi, M., Miyashita, E., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Niwa, K., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Ozaki, K., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roda, M., Roganova, T., Rokujo, H., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Schmidt-Parzefall, W., Shakiryanova, I., Schcedrina, T., Sheshukov, A., Shibuya, H., Shiraishi, T., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tolun, P., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yoon, C. S., Yoshida, J., Yoshimoto, M., Zaitsev, Y., Zemskova, S., and Zghiche, A.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment
Abstract

The OPERA neutrino experiment is designed to perform the first observation of neutrino oscillations in direct appearance mode in the $��_��\to ��_��$ channel, via the detection of the $��$-leptons created in charged current $��_��$ interactions. The detector, located in the underground Gran Sasso Laboratory, consists of an emulsion/lead target with an average mass of about 1.2 kt, complemented by electronic detectors. It is exposed to the CERN Neutrinos to Gran Sasso beam, with a baseline of 730 km and a mean energy of 17 GeV. The observation of the first $��_��$ candidate event and the analysis of the 2008-2009 neutrino sample have been reported in previous publications. This work describes substantial improvements in the analysis and in the evaluation of the detection efficiencies and backgrounds using new simulation tools. The analysis is extended to a sub-sample of 2010 and 2011 data, resulting from an electronic detector-based pre-selection, in which an additional $��_��$ candidate has been observed. The significance of the two events in terms of a $��_��\to ��_��$ oscillation signal is of 2.40 $��$., 33 pages, 12 figures, 5 tables. Prepared for submission to JHEP

Published
2013
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34. Introduction

Author

Schwippert, K., Lenkeit, J., and Educational Sciences (RICDE, FMG)

Published
2012

35. Search for muon to tau neutrino oscillation with the OPERA experiment in the CNGS beam

Author

Agafonova, N., Aleksandrov, A., Altinok, O., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Bagulya, A., Ben Dhahbi, A., Bertolin, A., Bozza, C., Brugiere, T., Brugnera, R., Brunet, F., Brunetti, G., Buontempo, S., Cazes, A., Chaussard, L., Chernyavskiy, M., Chiarella, V., Chukanov, A., D’Ambrosio, N., Dal Corso, F., Declais, Y, del Amo Sanchez, P., De Lellis, G., De Serio, M., Di Capua, F., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L.S., Favier, J., Ferber, T., Fini, R.A., Frekers, D., Fukuda, T., Garfagnini, A., Giacomelli, G., Giorgini, M., Gollnitz, C., Goldberg, J., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Guler, A.M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hollnagel, A., Hoshino, K., Ieva, M., Ishida, H., Ishiguro, K., Jakovčić, Krešimir, Jollet, C., Juget, F., Kamiscioglu, M., Kim, S. H., Kimura, M., Kitagawa, N., Kliček, Budimir, Knuesel, J., Kodama, K., Kogiso, K., Komatsu, M., Kose, U., Kreslo, I., Lazzaro, C., Lenkeit, J., Lippi, I., Ljubičić, Ante, Longhin, A., Loverre, P., Lutter, G., Malgin, A., Mandrioli, G., Mannai, K., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M.T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Palamara, O., Paniccia, M., Paoloni, A., Park, B.D., Park, I.G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Polukhina, C., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roganova, T., Rokujo, H., Romano, G., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, S., Schmidt-Parzefall, W., Scotto Lavina, L., Sheshukov, A., Shibuya, H., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J.S., Spinetti, M., Stanco, L., Starkov, N., Stellacci, M., Stipčević, Mario, Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Trabelsi, A., Tran, T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J.L., Wilquet, G., Wonsak, B., Yakushev, V., Yoon, C.S., Yoshida, Y., Yoshioka, T., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.

Subjects
Physics::Instrumentation and Detectors, Physics, High Energy Physics::Phenomenology, Astrophysics::Instrumentation and Methods for Astrophysics, High Energy Physics::Experiment, Nuclear Experiment, neutrino oscillations, nuclear emulsion, hybrid detector
Abstract

The OPERA neutrino experiment in the underground Gran Sasso Laboratory (LNGS) was designed to perform the first detection of neutrino oscillations in direct appearance mode in the νμ → ντ channel, the ντ signature being the identification of the τ-lepton created in its charged current interaction. The hybrid apparatus consists of a large mass emulsion film/lead target complemented by electronic detectors. Placed in the LNGS, it is exposed to the high-energy long-baseline CERN Neutrino beam to Gran Sasso (CNGS) 730 km away from the neutrino source. The observation of a first ντ candidate event was reported in 2010. In this paper, we discuss the result of the analysis of the data taken during the first two years of operation (2008–2009) underlining the major improvements brought to the analysis chain and to the Monte Carlo simulations. The statistical significance of the one event observed so far is then evaluated to 95%.

Published
2012

36. Search for nu(mu) -> nu(tau) oscillation with the OPERA experiment in the CNGS beam

Author

Agafonova, N., Aleksandrov, A., Altinok, O., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Bagulya, A., Dhahbi, A. B., Bertolin, A., Bozza, C., Brugiere, T., Brugnera, R., Brunet, F., Brunetti, G., Buontempo, S., Cazes, A., Chaussard, L., Chernyavskiy, M., Chiarella, V., Chukanov, A., D'Ambrosio, N., Corso, F. D., Declais, Y., Lellis, G. D., Serio, M. D., Capua, F. D., Crescenzo, A. D., Ferdinando, D. D., Marco, N. D., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Ferber, T., Fini, R. A., Frekers, D., Fukuda, T., Garfagnini, A., Giacomelli, G., Giorgini, M., Gollnitz, C., Goldberg, J., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Guler, A. M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hollnagel, A., Hoshino, K., Ieva, M., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Juget, F., Kamiscioglu, M., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Knuesel, J., Kodama, K., Kogiso, K., Komatsu, M., Kose, U., Kreslo, I., Lazzaro, C., Lenkeit, J., Lippi, I., Ljubicic, A., Longhin, A., Loverre, Pier Ferruccio, Lutter, G., Malgin, A., Mandrioli, G., Mannai, K., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Okateva, N., Olshevsky, A., Omura, T., Palamara, O., Paniccia, M., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roganova, T., Rokujo, H., Romano, G., Rosa, Giovanni, Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Schmidt Parzefall, W., Lavina, L. S., Sheshukov, A., Shibuya, H., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stellacci, M., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Trabelsi, A., Tran, T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yakushev, V., Yoon, C. S., Yoshida, J., Yoshioka, T., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.

Published
2012

39. Search for $\nu_{\mu} \to \nu_{\tau}$ oscillation with the OPERA experiment in the CNGS beam

Author

Agafonova, N., Aleksandrov, A., Altinok, O., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Bagulya, A., Bendhabi, A., Bertolin, A., Bozza, C., Brugiere, T., Brugnera, R., Brunet, F., Brunetti, G., Buontempo, S., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., D'Ambrosio, N., Dal Corso, F., Declais, Y., del Amo Sanchez, P., De Lellis, G., De Serio, M., Di Capua, F., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L.S., Favier, J., Ferber, T., Fini, R.A., Frekers, D., Fukuda, T., Garfagnini, A., Giacomelli, G., Giorgini, M., Goldberg, J., Gollnitz, C., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Guler, A.M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hollnagel, A., Hoshino, K., Ieva, M., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Juget, F., Kamiscioglu, M., Kawada, J., Kim, S.H., Kimura, M., Kitagawa, N., Klicek, B., Knuesel, J., Kodama, K., Kogiso, Y., Komatsu, M., Kose, U., Kreslo, I., Lazzaro, C., Lenkeit, J., Lippi, I., Ljubicic, A., Longhin, A., Loverre, P., Lutter, G., Malgin, A., Mandrioli, G., Mannai, K., Marteau, J., Masuda, H., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M.T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Okateva, N., Olchevsky, A., Omura, T., Palamara, O., Paniccia, M., Paoloni, A., Park, B.D., Park, I.G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roganova, T., Rokujo, H., Romano, G., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sakatani, Y., Sato, O., Sato, Y., Schembri, A., Schmidt-Parzefall, W., Scotto Lavina, L., Sheshukov, A., Shibuya, H., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J.S., Spinetti, M., Stanco, L., Starkov, N., Stellacci, M., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Trabelsi, A., Tran, T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J.L., Wilquet, G., Wonsak, B., Yakushev, V., Yoon, C.S., Yoshida, J., Yoshioka, T., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.

Subjects
Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract

The OPERA neutrino experiment in the underground Gran Sasso Laboratory (LNGS) was designed to perform the first detection of neutrino oscillations in direct appearance mode in the nu_mu to nu_tau channel, the nu_tau signature being the identification of the tau-lepton created in its charged current interaction. The hybrid apparatus consists of a large mass emulsion film/lead target complemented by electronic detectors. It is placed in the high energy long-baseline CERN to LNGS neutrino beam (CNGS) 730 km away from the neutrino source. The observation of a first nu_tau candidate event was reported in 2010. In this paper, we present the status of the experiment based on the analysis of the data taken during the first two years of operation (2008-2009). The statistical significance of the one event observed so far is then assessed. The OPERA neutrino experiment in the underground Gran Sasso Laboratory (LNGS) was designed to perform the first detection of neutrino oscillations in direct appearance mode in the $\nu_\mu\rightarrow\nu_\tau$ channel, the $\nu_\tau$ signature being the identification of the $\tau$-lepton created in its charged current interaction. The hybrid apparatus consists of a large mass emulsion film/lead target complemented by electronic detectors. It is placed in the high energy long-baseline CERN to LNGS neutrino beam (CNGS) 730 km away from the neutrino source. The observation of a first $\nu_\tau$ candidate event was reported in 2010. In this paper, we present the status of the experiment based on the analysis of the data taken during the first two years of operation (2008-2009). The statistical significance of the one event observed so far is then assessed.

Published
2011

40. Observation of a first $\nu_\tau$ candidate in the OPERA experiment in the CNGS beam

Author

Agafonova, N. a, Aleksandrov, A. b, Altinok, O. c, Ambrosio, M. d, Anokhina, A. e, Aoki, S. f, Ariga, A. g, Ariga, T. g, Autiero, D. h, Badertscher, A. i, Bagulya, A. b, Bendhabi, A. j, Bertolin, A. k, Besnier, M. l, Bick, D. m, Boyarkin, V. a, Bozza, C. n, Brugière, T. h, Brugnera, Riccardo, Ko, R., Brunet, F. k, Brunetti, Hp, G., Buontempo, S. d, Cazes, A. h, Chaussard, L. h, Chernyavsky, M. b, Chiarella, V. q, Chon, Sen, N. r, Chukanov, A. s, Ciesielski, R. k., Dal, Corso, Dk, F., D'Ambrosio, N. t, Declais, Y. h, del Amo Sanchez, P. l., Lellis, De, Du, G., Serio, De, M. v., Capua, Di, F. d., Crescenzo, Di, Du, A., Ferdinando, Di, D. w., Marco, Di, N. x., Giovanni, Di, A. t, Dmitrievsky, S. s, Dracos, M. r, Duchesneau, D. l, Dusini, S. k, Dzhatdoev, T. e, Ebert, J. m, Egorov, O. y, Enikeev, R. a, Ereditato, A. g, Esposito, L. S. i, Favier, J. l, Ferber, T. m, Fini, R. A. v, Frekers, D. z, Fukuda, Aa, T., Galkin, V. e, Garfagnini, Alberto, Ko, A., Giacomelli, Pw, G., Giorgini, Pw, M., Goldberg, Ab, J., Göllnitz, C. m, Golubkov, D. y, Goncharova, L. b, Gornushkin, Y. s, Grella, G. n, Grianti, Qac, F., Guler, A. M. c, Gustavino, C. t, Hagner, C. m, Hamada, Aa, K., Hara, T. f, Hierholzer, M. m, Hoshino, Ieva, M. v, Ishida, Ad, H., Ishiguro, Jakovcic, Af, K., Jollet, C. r, Juget, F. g, Kamiscioglu, M. c, Kawada, J. g, Kazuyama, M. q, Kim, S. H., Ae, Kimura, Ad, M., Kitagawa, Aa, N., Klicek, Af, B., Knuesel, J. g, Kodama, Ag, K., Komatsu, Aa, M., Kose, Ko, U., Kreslo, I. g, Kubota, Aa, H., Lazzaro, C. i, Lenkeit, J. m, Lippi, I. k, Ljubicic, Af, A., Longhin, Lutter, G. g, Malgin, A. a, Mandrioli, G. w, Mannai, K. j, Marotta, A. d, Marteau, J. h, Matsuo, Ad, T., Matveev, V. a, Mauri, Pw, N., Medinaceli, E. w, Meisel, F. g, Meregaglia, A. r, Migliozzi, P. d, Mikado, Ad, S., Miyamoto, Aa, S., Monacelli, P. x, Morishima, Moser, U. g, Muciaccia, Vah, M. T., Naganawa, Naka, Nakamura, Nakano, Nakatsuka, Aa, Y., Naumov, D. s, Nikitina, V. e, Niwa, Nonoyama, Ogawa, Olchevsky, A. s, Omura, Orlova, G. b, Osedlo, V. e, Paniccia, M. q, Paoloni, A. q, Park, B. D., Ae, Park, I. G. u, Pastore, Daf, A., Patrizii, L. w, Pennacchio, E. h, Pessard, H. b., Pilipenko, V. z, Pistillo, C. g, Polukhina, N. b, Pozzato, M. f, Pretzl, K. g, Publichenko, P. e, Pupilli, F. x, Repellin, J. P., Am, Rescigno, R. n, Roganova, T. e, Rokujo, H. f, Romano, G. d, Rosa, Ai, G., Rostovtseva, I. y, Rubbia, A. i, Russo, Ryasny, V. a, Ryazhskaya, O. a, Sakatani, Sato, Aa, O., Aj, Y., Schembri, A. t, Schmidt, Parzefall, W. m, Schroeder, Ak, H., Scotto, Lavina, L. d, Sheshukov, A. s, Shibuya, Simone, Vah, S., Sioli, Sirignano, Chiara, Sirri, G. w, Song, J. S., Ae, Spinetti, M. q, Stanco, L. k, Starkov, N. b, Stipcevic, Af, M., Strauss, T. i, Strolin, Du, P., Suzuki, Takahashi, Tenti, Terranova, F. q, Tezuka, Aj, I., Tioukov, V. d, Tolun, P. c, Trabelsi, A. j, Tran, T. h, Tufanli, S. c, Vilain, P. h, Vladimirov, M. b, Votano, L. g, Vuilleumier, J. L. g, Wilquet, Al, G., Wonsak, B. m, Yakushev, V. a, Yoon, C. S., Ae, Yoshida, Aa, J., Yoshioka, Zaitsev, Y. y, Zemskova, S. s, Zghiche, A. l, Zimmermann, R. m., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), and OPERA

Subjects
Nuclear and High Energy Physics, Particle physics, Oscillations, Physics::Instrumentation and Detectors, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, CNGS, Neutrino, Appearance, Tau, OPERA, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], neutrini, 010306 general physics, Neutrino oscillation, Nuclear Experiment, Alte energie, Charged current, Physics, Large Hadron Collider, neutrino, oscillations, appearance, tau, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Physique atomique et nucléaire, Massless particle, Neutrino detector, Physique des particules élémentaires, cngs, opera, High Energy Physics::Experiment, Event (particle physics), Particle Physics - Experiment, Beam (structure)
Abstract

The OPERA neutrino detector in the underground Gran Sasso Laboratory (LNGS) has been designed to perform the first detection of neutrino oscillations in direct appearance mode through the study of the νμ→ντ channel. The hybrid apparatus consists of an emulsion/lead target complemented by electronic detectors and it is placed in the high energy long-baseline CERN to LNGS beam (CNGS) 730 km away from the neutrino source. Runs with CNGS neutrinos were successfully carried out in 2008 and 2009. After a brief description of the beam, the experimental setup and the procedures used for the analysis of the neutrino events, we describe the topology and kinematics of a first candidate ?charged-current event satisfying the kinematical selection criteria. The background calculations and their cross-check are explained in detail and the significance of the event is assessed. © 2010 Elsevier B.V., 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2010

41. Study of the effects induced by lead on the emulsion films of the OPERA experiment

Author

Anokhina, A., Aoki, S., Ariga, A, Arrabito, L., Autiero, D., Badertscher, A., Bay, F., Bergnoli, A, Greggio, F. B., Besnier, M., Bick, D., Bozza, C., Brugiere, T., Brugnera, R., Brunetti, G., Buontempo, S., Carrara, E., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Consiglio, L., Cozzi, M., Dal Corso, F., D'Amato G., D'Ambrosio, N., De Lellis, G., Declais, Y., De Serio, M., Di Capua, F., Di Ferdinando, D., Di Giovanni, A., Di Marco, N., Di Troia, C., Dmitrievski, S.: Dominjon, A., Dracos, M., Duchesneau, D., Dulach, B., Dusini, S., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, S., Favier, J., Felici, G., Ferber, T., Fini, R., Franceschi, A., Fukuda, T., Fukushima, C., Galkin, V. I., Galkin, V. A., Garfagnini, A., Giacomelli, G., Giorgini, M., Goellnitz, C., Golubkov, D., Gornoushkin, Y., Grella, G., Grianti, F., Guler, M., Gusev, G., Gustavino, C., Hagner, C., Hara, T., Hierholzer, M., Hiramatsu, S., Hoshino, K., Ieva, M., Jakovčić, Krešimir, Csathy, J. J., Janutta, B., Jollet, C., Juget, F., Kawai, T., Kazuyama, M., Kim, S. H., Kimura, M., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Laktineh, I., Lazzaro, C., Lenkeit, J., Ljubičić, Ante, Longhin, A., Lutter, G., Manai, K., Mandrioli, G., Manzoor, S., Marotta, A., Marteau, J., Matsuoka, H., Mauri, N., Meisel, F., Meregaglia, A., Messina, M., Migliozzi, P., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakamura, T., Nakano, T., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Osedlo, V., Ossetski, D., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, F., Roganova, T., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Ryzhikov, D., Sato, Y., Sato, O., Saveliev, V., Sazhina, G., Schembri, A., Lavina, L. S., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipčević, Mario, Strauss, T., Strolin, P., Sugonyaev, V., Taira, Y., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Togo, V., Tolun, P., Tsarev, V., Tufanli, S., Ushida, N., Valieri, C., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, L., Wilquet, G., Wonsak, B., Wurtz, J., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghicheb, A., and Zimmermannm, R.

Subjects
Condensed Matter::Soft Condensed Matter, particle identification methods, particle tracking detectors, hybrid detectors, large detector systems for particle and astroparticle physics, Physics::Instrumentation and Detectors, Nuclear Experiment
Abstract

The OPERA neutrino oscillation experiment is based on the use of the Emulsion Cloud Chamber (ECC). In the OPERA ECC, nuclear emulsion films acting as very high precision tracking detectors are interleaved with lead plates providing a massive target for neutrino interactions. We report on studies related to the effects occurring from the contact between emulsion and lead. A low radioactivity lead is required in order to minimize the number of background tracks in emulsions and to achieve the required performance in the reconstruction of neutrino events. It was observed that adding other chemical elements to the lead, in order to improve the mechanical properties, may significantly increase the level of radioactivity on the emulsions. A detailed study was made in order to choose a lead alloy with good mechanical properties and an appropriate packing technique so as to have a low enough effective radioactivity.

Published
2008

42. Observation of a first [formula omitted] candidate event in the OPERA experiment in the CNGS beam

Author

Agafonova, N., Aleksandrov, A., Altinok, O., Ambrosio, M., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Bagulya, A., Bendhabi, A., Bertolin, A., Besnier, M., Bick, D., Boyarkin, V., Bozza, C., Brugière, T., Brugnera, R., Brunet, F., Brunetti, G., Buontempo, S., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Ciesielski, R., Corso, F.Dal, D'Ambrosio, N., Declais, Y., del Amo Sanchez, P., De Lellis, G., De Serio, M., Di Capua, F., Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Di Giovanni, A., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L.S., Favier, J., Ferber, T., Fini, R.A., Frekers, D., Fukuda, T., Galkin, V., Garfagnini, A., Giacomelli, G., Giorgini, M., Goldberg, J., Göllnitz, C., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Guler, A.M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hoshino, K., Ieva, M., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Juget, F., Kamiscioglu, M., Kawada, J., Kazuyama, M., Kim, S.H., Kimura, M., Kitagawa, N., Klicek, B., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Kubota, H., Lazzaro, C., Lenkeit, J., Lippi, I., Ljubicic, A., Longhin, A., Lutter, G., Malgin, A., Mandrioli, G., Mannai, K., Marotta, A., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M.T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Olchevsky, A., Omura, T., Orlova, G., Osedlo, V., Paniccia, M., Paoloni, A., Park, B.D., Park, I.G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, F., Repellin, J.P., Rescigno, R., Roganova, T., Rokujo, H., Romano, G., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sakatani, Y., Sato, O., Sato, Y., Schembri, A., Schmidt-Parzefall, W., Schroeder, H., Scotto Lavina, L., Sheshukov, A., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J.S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Suzuki, K., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Trabelsi, A., Tran, T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J.-L., Wilquet, G., Wonsak, B., Yakushev, V., Yoon, C.S., Yoshida, J., Yoshioka, T., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.

Published
2010
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43. Procedure for short-lived particle detection in the OPERA experiment and its application to charm decays

Author

Agafonova, N., primary, Aleksandrov, A., additional, Anokhina, A., additional, Aoki, S., additional, Ariga, A., additional, Ariga, T., additional, Bender, D., additional, Bertolin, A., additional, Bozza, C., additional, Brugnera, R., additional, Buonaura, A., additional, Buontempo, S., additional, Büttner, B., additional, Chernyavsky, M., additional, Chukanov, A., additional, Consiglio, L., additional, D’Ambrosio, N., additional, De Lellis, G., additional, De Serio, M., additional, Del Amo Sanchez, P., additional, Di Crescenzo, A., additional, Di Ferdinando, D., additional, Di Marco, N., additional, Dmitrievski, S., additional, Dracos, M., additional, Duchesneau, D., additional, Dusini, S., additional, Dzhatdoev, T., additional, Ebert, J., additional, Ereditato, A., additional, Fini, R. A., additional, Fukuda, T., additional, Galati, G., additional, Garfagnini, A., additional, Giacomelli, G., additional, Göllnitz, C., additional, Goldberg, J., additional, Gornushkin, Y., additional, Grella, G., additional, Guler, M., additional, Gustavino, C., additional, Hagner, C., additional, Hara, T., additional, Hollnagel, A., additional, Hosseini, B., additional, Ishida, H., additional, Ishiguro, K., additional, Jakovcic, K., additional, Jollet, C., additional, Kamiscioglu, C., additional, Kamiscioglu, M., additional, Kawada, J., additional, Kim, J. H., additional, Kim, S. H., additional, Kitagawa, N., additional, Klicek, B., additional, Kodama, K., additional, Komatsu, M., additional, Kose, U., additional, Kreslo, I., additional, Lauria, A., additional, Lenkeit, J., additional, Ljubicic, A., additional, Longhin, A., additional, Loverre, P., additional, Malgin, A., additional, Malenica, M., additional, Mandrioli, G., additional, Matsuo, T., additional, Matveev, V., additional, Mauri, N., additional, Medinaceli, E., additional, Meregaglia, A., additional, Mikado, S., additional, Monacelli, P., additional, Montesi, M. C., additional, Morishima, K., additional, Muciaccia, M. T., additional, Naganawa, N., additional, Naka, T., additional, Nakamura, M., additional, Nakano, T., additional, Nakatsuka, Y., additional, Niwa, K., additional, Ogawa, S., additional, Okateva, N., additional, Olshevsky, A., additional, Omura, T., additional, Ozaki, K., additional, Paoloni, A., additional, Park, B. D., additional, Park, I. G., additional, Pasqualini, L., additional, Pastore, A., additional, Patrizii, L., additional, Pessard, H., additional, Pistillo, C., additional, Podgrudkov, D., additional, Polukhina, N., additional, Pozzato, M., additional, Pupilli, F., additional, Roda, M., additional, Rokujo, H., additional, Roganova, T., additional, Rosa, G., additional, Ryazhskaya, O., additional, Sato, O., additional, Schembri, A., additional, Shakiryanova, I., additional, Shchedrina, T., additional, Sheshukov, A., additional, Shibuya, H., additional, Shiraishi, T., additional, Shoziyoev, G., additional, Simone, S., additional, Sioli, M., additional, Sirignano, C., additional, Sirri, G., additional, Spinetti, M., additional, Stanco, L., additional, Starkov, N., additional, Stellacci, S. M., additional, Stipcevic, M., additional, Strauss, T., additional, Strolin, P., additional, Takahashi, S., additional, Tenti, M., additional, Terranova, F., additional, Tioukov, V., additional, Tufanli, S., additional, Vilain, P., additional, Vladimirov, M., additional, Votano, L., additional, Vuilleumier, J. L., additional, Wilquet, G., additional, Wonsak, B., additional, Yoon, C. S., additional, Zemskova, S., additional, and Zghiche, A., additional

Published
2014
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44. Measurement of the TeV atmospheric muon charge ratio with the complete OPERA data set

Author

Agafonova, N., primary, Aleksandrov, A., additional, Anokhina, A., additional, Aoki, S., additional, Ariga, A., additional, Ariga, T., additional, Bender, D., additional, Bertolin, A., additional, Bozza, C., additional, Brugnera, R., additional, Buonaura, A., additional, Buontempo, S., additional, Büttner, B., additional, Chernyavsky, M., additional, Chukanov, A., additional, Consiglio, L., additional, D’Ambrosio, N., additional, De Lellis, G., additional, De Serio, M., additional, Del Amo Sanchez, P., additional, Di Crescenzo, A., additional, Di Ferdinando, D., additional, Di Marco, N., additional, Dmitrievski, S., additional, Dracos, M., additional, Duchesneau, D., additional, Dusini, S., additional, Dzhatdoev, T., additional, Ebert, J., additional, Ereditato, A., additional, Fini, R. A., additional, Fukuda, T., additional, Galati, G., additional, Garfagnini, A., additional, Giacomelli, G., additional, Göllnitz, C., additional, Goldberg, J., additional, Gornushkin, Y., additional, Grella, G., additional, Guler, M., additional, Gustavino, C., additional, Hagner, C., additional, Hara, T., additional, Hollnagel, A., additional, Hosseini, B., additional, Ishida, H., additional, Ishiguro, K., additional, Jakovcic, K., additional, Jollet, C., additional, Kamiscioglu, C., additional, Kamiscioglu, M., additional, Kawada, J., additional, Kim, J. H., additional, Kim, S. H., additional, Kitagawa, N., additional, Klicek, B., additional, Kodama, K., additional, Komatsu, M., additional, Kose, U., additional, Kreslo, I., additional, Lauria, A., additional, Lenkeit, J., additional, Ljubicic, A., additional, Longhin, A., additional, Loverre, P., additional, Malgin, A., additional, Malenica, M., additional, Mandrioli, G., additional, Matsuo, T., additional, Matveev, V., additional, Mauri, N., additional, Medinaceli, E., additional, Meregaglia, A., additional, Mikado, S., additional, Monacelli, P., additional, Montesi, M. C., additional, Morishima, K., additional, Muciaccia, M. T., additional, Naganawa, N., additional, Naka, T., additional, Nakamura, M., additional, Nakano, T., additional, Nakatsuka, Y., additional, Niwa, K., additional, Ogawa, S., additional, Okateva, N., additional, Olshevsky, A., additional, Omura, T., additional, Ozaki, K., additional, Paoloni, A., additional, Park, B. D., additional, Park, I. G., additional, Pasqualini, L., additional, Pastore, A., additional, Patrizii, L., additional, Pessard, H., additional, Pistillo, C., additional, Podgrudkov, D., additional, Polukhina, N., additional, Pozzato, M., additional, Pupilli, F., additional, Roda, M., additional, Rokujo, H., additional, Roganova, T., additional, Rosa, G., additional, Ryazhskaya, O., additional, Sato, O., additional, Schembri, A., additional, Shakiryanova, I., additional, Shchedrina, T., additional, Sheshukov, A., additional, Shibuya, H., additional, Shiraishi, T., additional, Shoziyoev, G., additional, Simone, S., additional, Sioli, M., additional, Sirignano, C., additional, Sirri, G., additional, Spinetti, M., additional, Stanco, L., additional, Starkov, N., additional, Stellacci, S. M., additional, Stipcevic, M., additional, Strolin, P., additional, Takahashi, S., additional, Tenti, M., additional, Terranova, F., additional, Tioukov, V., additional, Tufanli, S., additional, Vilain, P., additional, Vladimirov, M., additional, Votano, L., additional, Vuilleumier, J. L., additional, Wilquet, G., additional, Wonsak, B., additional, Yoon, C. S., additional, Zemskova, S., additional, and Zghiche, A., additional

Published
2014
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45. Measurement of the neutrino velocity with the OPERA detector in the CNGS beam using the 2012 dedicated data

Author

Adam, T, Agafonova, N, Aleksandrov, A, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Ben Dhahbi, A, Beretta, M, Bertolin, A, Bozza, C, Brugière, T, Brugnera, R, Brunet, F, Brunetti, G, Buettner, B, Buontempo, S, Carlus, B, Cavanna, F, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chukanov, A, D’Ambrosio, N, De Lellis, G, De Serio, M, del Amo Sanchez, P, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievsky, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Ereditato, A, Esposito, L, Favier, J, Felici, G, Ferber, T, Fini, R, Fukuda, T, Garfagnini, A, Giacomelli, G, Girerd, C, Goellnitz, C, Goldberg, J, Golubkov, D, Gornushkin, Y, Grella, G, Grianti, F, Guerin, C, Guler, A, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hollnagel, A, Ishida, H, Ishiguro, K, Jakovcic, K, Jollet, C, Kamiscioglu, C, Kamiscioglu, M, Kawada, J, Kim, J, Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Lauria, A, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Malgin, A, Mancini Terracciano, C, Mandrioli, G, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meregaglia, A, Migliozzi, P, Mikado, S, Monacelli, P, Montesi, M, Morishima, K, Moser, U, Muciaccia, M, Nakamura, M, Nakano, T, Nakatsuka, Y, Naumov, D, Nikitina, V, Ogawa, S, Olchevsky, A, Ozaki, K, Palamara, O, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pistillo, C, Podgrudkov, D, Polukhina, N, Pozzato, M, Pretzl, K, Pupilli, F, Rescigno, R, Roda, M, Roganova, T, Rokujo, H, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Schmidt Parzefall, W, Schuler, J, Shakiryanova, I, Sheshukov, A, Shibuya, H, Shoziyoev, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stellacci, S, Stipcevic, M, Strauss, T, Takahashi, S, Tenti, M, Terranova, F, Tioukov, V, Tolun, P, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Wurtz, J, Yoon, C, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Esposito, LS, Fini, RA, Guler, AM, Kim, JH, Kim, SH, Montesi, MC, Muciaccia, MT, Park, BD, Park, IG, Song, JS, Stellacci, SM, TERRANOVA, FRANCESCO, Yoon, CS, Zimmermann, R., Adam, T, Agafonova, N, Aleksandrov, A, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Ben Dhahbi, A, Beretta, M, Bertolin, A, Bozza, C, Brugière, T, Brugnera, R, Brunet, F, Brunetti, G, Buettner, B, Buontempo, S, Carlus, B, Cavanna, F, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chukanov, A, D’Ambrosio, N, De Lellis, G, De Serio, M, del Amo Sanchez, P, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievsky, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Ereditato, A, Esposito, L, Favier, J, Felici, G, Ferber, T, Fini, R, Fukuda, T, Garfagnini, A, Giacomelli, G, Girerd, C, Goellnitz, C, Goldberg, J, Golubkov, D, Gornushkin, Y, Grella, G, Grianti, F, Guerin, C, Guler, A, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hollnagel, A, Ishida, H, Ishiguro, K, Jakovcic, K, Jollet, C, Kamiscioglu, C, Kamiscioglu, M, Kawada, J, Kim, J, Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Lauria, A, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Malgin, A, Mancini Terracciano, C, Mandrioli, G, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meregaglia, A, Migliozzi, P, Mikado, S, Monacelli, P, Montesi, M, Morishima, K, Moser, U, Muciaccia, M, Nakamura, M, Nakano, T, Nakatsuka, Y, Naumov, D, Nikitina, V, Ogawa, S, Olchevsky, A, Ozaki, K, Palamara, O, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pistillo, C, Podgrudkov, D, Polukhina, N, Pozzato, M, Pretzl, K, Pupilli, F, Rescigno, R, Roda, M, Roganova, T, Rokujo, H, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Schmidt Parzefall, W, Schuler, J, Shakiryanova, I, Sheshukov, A, Shibuya, H, Shoziyoev, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stellacci, S, Stipcevic, M, Strauss, T, Takahashi, S, Tenti, M, Terranova, F, Tioukov, V, Tolun, P, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Wurtz, J, Yoon, C, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Esposito, LS, Fini, RA, Guler, AM, Kim, JH, Kim, SH, Montesi, MC, Muciaccia, MT, Park, BD, Park, IG, Song, JS, Stellacci, SM, TERRANOVA, FRANCESCO, Yoon, CS, and Zimmermann, R.

Abstract

In spring 2012 CERN provided two weeks of a short bunch proton beam dedicated to the neutrino velocity measurement over a distance of 730 km. The OPERA neutrino experiment at the underground Gran Sasso Laboratory used an upgraded setup compared to the 2011 measurements, improving the measurement time accuracy. An independent timing system based on the Resistive Plate Chambers was exploited providing a time accuracy of similar to 1 ns. Neutrino and anti-neutrino contribution were separated using the information provided by the OPERA magnetic spectrometers. The new analysis profited from the precision geodesy measurements of the neutrino beaseline and of the CNGS/LNGS clock synchronization. The neutrino arrival time with respect to the one computed assuming the speed of light in vacuum is found to be delta t(nu) equivalent to TOFc - TOF nu = (0.6 +/- 0.4 (stat.)+/- 3.0 (syst.)) and delta t((nu) over bar) equivalent to TOFc-TOF(nu) over bar = (1.7 +/- 1.4 (stat.)+/- 3.1 (syst.)) ns for nu(mu) and (nu) over bar (mu), respectively. This corresponds to a limit on the muon neutrino velocity with respect to the speed of light of -1.8 x 10(-6) < (V-nu - c)/c < 2.3 x 10(-6) at 90% C.L. This new measurement confirms with higher accuracy the revised OPERA result

Published
2013

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

Author

Agafonova, N, Aleksandrov, A, Altinok, O, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Bagulya, A, Ben Dhahbi, A, Bertolin, A, Besnier, M, Bozza, C, Brugière, T, Brugnera, R, Brunet, F, Brunetti, G, Buontempo, S, Cazes, A, Chaussard, L, Chernyavskiy, M, Chiarella, V, Chukanov, A, D'Ambrosio, N, Dal Corso, F, De Lellis, G, del Amo Sanchez, P, Déclais, Y, De Serio, M, Di Capua, F, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, S. Esposito, L, Favier, J, Ferber, T, A. Fini, R, Frekers, D, Fukuda, T, Garfagnini, A, Giacomelli, G, Giorgini, M, Göllnitz, C, Goldberg, J, Golubkov, D, Goncharova, L, Gornushkin, Y, Grella, G, Grianti, F, M. Guler, A, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hollnagel, A, Hoshino, K, Ieva, M, Ishida, H, Jakovcic, K, Jollet, C, Juget, F, Kamiscioglu, M, Kazuyama, K, H. Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Kubota, H, Lazzaro, C, Lenkeit, J, Lippi, I, Ljubicic, A, Longhin, A, Loverre, P, Lutter, G, Malgin, A, Mandrioli, G, Manai, K, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, T. Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Naumov, D, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Okateva, N, Olshevskiy, A, Paniccia, M, Paoloni, A, D. Park, B, G. Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pretzl, K, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pupilli, F, Rescigno, R, Roganova, T, Rokujo, H, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Schmidt Parzefall, W, Schroeder, H, Scotto Lavina, L, Sheshukov, A, Shibuya, H, Shoziyoev, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, S. Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Trabelsi, A, Tran, T, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, L. Vuilleumier, J, Wilquet, G, Wonsak, B, Yakushev, V, S. Yoon, C, Yoshioka, T, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Zimmermann, R., TERRANOVA, FRANCESCO, Agafonova, N, Aleksandrov, A, Altinok, O, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Bagulya, A, Ben Dhahbi, A, Bertolin, A, Besnier, M, Bozza, C, Brugière, T, Brugnera, R, Brunet, F, Brunetti, G, Buontempo, S, Cazes, A, Chaussard, L, Chernyavskiy, M, Chiarella, V, Chukanov, A, D'Ambrosio, N, Dal Corso, F, De Lellis, G, del Amo Sanchez, P, Déclais, Y, De Serio, M, Di Capua, F, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, S. Esposito, L, Favier, J, Ferber, T, A. Fini, R, Frekers, D, Fukuda, T, Garfagnini, A, Giacomelli, G, Giorgini, M, Göllnitz, C, Goldberg, J, Golubkov, D, Goncharova, L, Gornushkin, Y, Grella, G, Grianti, F, M. Guler, A, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hollnagel, A, Hoshino, K, Ieva, M, Ishida, H, Jakovcic, K, Jollet, C, Juget, F, Kamiscioglu, M, Kazuyama, K, H. Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Kubota, H, Lazzaro, C, Lenkeit, J, Lippi, I, Ljubicic, A, Longhin, A, Loverre, P, Lutter, G, Malgin, A, Mandrioli, G, Manai, K, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, T. Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Naumov, D, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Okateva, N, Olshevskiy, A, Paniccia, M, Paoloni, A, D. Park, B, G. Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pretzl, K, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pupilli, F, Rescigno, R, Roganova, T, Rokujo, H, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Schmidt Parzefall, W, Schroeder, H, Scotto Lavina, L, Sheshukov, A, Shibuya, H, Shoziyoev, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, S. Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Trabelsi, A, Tran, T, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, L. Vuilleumier, J, Wilquet, G, Wonsak, B, Yakushev, V, S. Yoon, C, Yoshioka, T, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Zimmermann, R., and TERRANOVA, FRANCESCO

Abstract

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

Published
2012

47. Study of neutrino interactions with the electronic detectors of the OPERA experiment

Author

Agafonova, N, Aleksandrov, A, Altinok, O, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Bagulya, A, Bendhahbi, A, Bertolin, A, Bozza, C, Brugière, T, Brugnera, R, Brunet, F, Brunetti, G, Buontempo, S, Cazes, A, Chaussard, L, Chernyavskiy, M, Chiarella, V, Chukanov, A, D'Ambrosio, N, Dal Corso, F, De Lellis, G, Del Amo Sanchez, P, Déclais, Y, De Serio, M, Di Capua, F, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Ferber, T, Fini, R, Frekers, D, Fukuda, T, Garfagnini, A, Giacomelli, G, Giorgini, M, Göllnitz, C, Goldberg, J, Golubkov, D, Goncharova, L, Gornushkin, Y, Grella, G, Grianti, F, Guler, A, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hollnagel, A, Hoshino, K, Ieva, M, Ishida, H, Jakovcic, K, Jollet, C, Juget, F, Kamiscioglu, M, Kazuyama, K, Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Kubota, H, Lazzaro, C, Lenkeit, J, Lippi, I, Ljubicic, A, Longhin, A, Loverre, P, Lutter, G, Malgin, A, Mandrioli, G, Mannai, K, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Naumov, D, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Okateva, N, Olchevskiy, A, Paniccia, M, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pretzl, K, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pupilli, F, Rescigno, R, Roganova, T, Rokujo, H, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Schmidt Parzefall, W, Schroeder, H, Scotto Lavina, L, Sheshukov, A, Shibuya, H, Shoziyeov, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Trabelsi, A, Tran, T, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yakushev, V, Yoon, C, Yoshioka, T, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Zimmermann, R., TERRANOVA, FRANCESCO, Agafonova, N, Aleksandrov, A, Altinok, O, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Bagulya, A, Bendhahbi, A, Bertolin, A, Bozza, C, Brugière, T, Brugnera, R, Brunet, F, Brunetti, G, Buontempo, S, Cazes, A, Chaussard, L, Chernyavskiy, M, Chiarella, V, Chukanov, A, D'Ambrosio, N, Dal Corso, F, De Lellis, G, Del Amo Sanchez, P, Déclais, Y, De Serio, M, Di Capua, F, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Ferber, T, Fini, R, Frekers, D, Fukuda, T, Garfagnini, A, Giacomelli, G, Giorgini, M, Göllnitz, C, Goldberg, J, Golubkov, D, Goncharova, L, Gornushkin, Y, Grella, G, Grianti, F, Guler, A, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hollnagel, A, Hoshino, K, Ieva, M, Ishida, H, Jakovcic, K, Jollet, C, Juget, F, Kamiscioglu, M, Kazuyama, K, Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Kubota, H, Lazzaro, C, Lenkeit, J, Lippi, I, Ljubicic, A, Longhin, A, Loverre, P, Lutter, G, Malgin, A, Mandrioli, G, Mannai, K, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Naumov, D, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Okateva, N, Olchevskiy, A, Paniccia, M, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pretzl, K, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pupilli, F, Rescigno, R, Roganova, T, Rokujo, H, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Schmidt Parzefall, W, Schroeder, H, Scotto Lavina, L, Sheshukov, A, Shibuya, H, Shoziyeov, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Trabelsi, A, Tran, T, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yakushev, V, Yoon, C, Yoshioka, T, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Zimmermann, R., and TERRANOVA, FRANCESCO

Abstract

The OPERA experiment is based on a hybrid technology combining electronic detectors (EDs) and nuclear emulsions. OPERA collected muon-neutrino interactions during the 2008 and 2009 physics runs of the CNGS neutrino beam, produced at CERN with an energy range of about 5-35 GeV. A total of 5.3 × 1019 protons on target equivalent luminosity have been analysed with the OPERA EDs: scintillator strips target trackers and magnetic muon spectrometers equipped with resistive plate gas chambers and drift tubes, allowing a detailed reconstruction of muon-neutrino interactions. Charged current (CC) and neutral current (NC) interactions are identified, using the measurements in the EDs, and the NC/CC ratio is computed. The momentum distribution and the charge of the muon tracks produced in CC interactions are analysed. Calorimetric measurements of the visible energy are performed for both the CC and NC samples. For CC events, the Bjorken-y distribution and the hadronic shower profile are computed. The results are compared with a detailed Monte Carlo simulation of the response of EDs. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

Published
2011

48. Measurement of the atmospheric muon charge ratio with the OPERA detector

Author

Agafonova, N, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Bagulya, A, Bertolin, A, Besnier, M, Bick, D, Boyarkin, V, Bozza, C, Brugiere, T, Brugnera, R, Brunetti, G, Buontempo, S, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chon Sen, N, Chukanov, A, Cozzi, M, D'Amato, G, Dal Corso, F, D'Ambrosio, N, De Lellis, G, Declais, Y, De Serio, M, Di Capua, F, Di Ferdinando, D, Di Giovanni, A, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Felici, G, Ferber, T, Fini, R, Frekers, D, Fukuda, T, Fukushima, C, Galkin, V, Garfagnini, A, Giacomelli, G, Giorgini, M, Goellnitz, C, Goldberg, J, Golubkov, D, Goncharova, L, Gornushkin, Y, Grella, G, Grianti, F, Guler, M, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hoshino, K, Ieva, M, Jakovcic, K, Jollet, C, Juget, F, Kazuyama, M, Kim, S, Kimura, M, Klicek, B, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Kubota, H, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Lutter, G, Malgin, A, Mandrioli, G, Marotta, A, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Naumov, D, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Olchevski, A, Oldorf, C, Orlova, G, Osedlo, V, Paniccia, M, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pilipenko, V, Pistillo, C, Policastro, G, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Rescigno, R, Roganova, T, Rokujo, H, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Parzefall, W, Schroeder, H, Lavina, L, Sheshukov, A, Shibuya, H, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Tran, T, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yakushev, V, Yoon, C, Yoshioka, T, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Zimmermann, R., TERRANOVA, FRANCESCO, Agafonova, N, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Bagulya, A, Bertolin, A, Besnier, M, Bick, D, Boyarkin, V, Bozza, C, Brugiere, T, Brugnera, R, Brunetti, G, Buontempo, S, Cazes, A, Chaussard, L, Chernyavsky, M, Chiarella, V, Chon Sen, N, Chukanov, A, Cozzi, M, D'Amato, G, Dal Corso, F, D'Ambrosio, N, De Lellis, G, Declais, Y, De Serio, M, Di Capua, F, Di Ferdinando, D, Di Giovanni, A, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Felici, G, Ferber, T, Fini, R, Frekers, D, Fukuda, T, Fukushima, C, Galkin, V, Garfagnini, A, Giacomelli, G, Giorgini, M, Goellnitz, C, Goldberg, J, Golubkov, D, Goncharova, L, Gornushkin, Y, Grella, G, Grianti, F, Guler, M, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hoshino, K, Ieva, M, Jakovcic, K, Jollet, C, Juget, F, Kazuyama, M, Kim, S, Kimura, M, Klicek, B, Knuesel, J, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Kubota, H, Lazzaro, C, Lenkeit, J, Ljubicic, A, Longhin, A, Lutter, G, Malgin, A, Mandrioli, G, Marotta, A, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Naumov, D, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Olchevski, A, Oldorf, C, Orlova, G, Osedlo, V, Paniccia, M, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pilipenko, V, Pistillo, C, Policastro, G, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Rescigno, R, Roganova, T, Rokujo, H, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Parzefall, W, Schroeder, H, Lavina, L, Sheshukov, A, Shibuya, H, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stipcevic, M, Strauss, T, Strolin, P, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Tran, T, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yakushev, V, Yoon, C, Yoshioka, T, Yoshida, J, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, Zimmermann, R., and TERRANOVA, FRANCESCO

Abstract

The OPERA detector at the Gran Sasso underground laboratory (LNGS) was used to measure the atmospheric muon charge ratio R(mu) = N(mu)+/N(mu)- in the TeV energy region. We analyzed 403069 atmospheric muons corresponding to 113.4 days of livetime during the 2008 CNGS run. We computed separately the muon charge ratio for single and for multiple muon events in order to select different energy regions of the primary cosmic ray spectrum and to test the R(mu) dependence on the primary composition. The measured R(mu) values were corrected taking into account the charge-misidentification errors. Data have also been grouped in five bins of the "vertical surface energy" epsilon(mu) cos theta. A fit to a simplified model of muon production in the atmosphere allowed the determination of the pion and kaon charge ratios weighted by the cosmic ray energy spectrum.

Published
2010

50. Momentum measurement by the multiple Coulomb scattering method in the OPERA lead-emulsion target

Author

Agafonova, N, primary, Aleksandrov, A, additional, Altinok, O, additional, Anokhina, A, additional, Aoki, S, additional, Ariga, A, additional, Ariga, T, additional, Autiero, D, additional, Badertscher, A, additional, Bagulya, A, additional, Ben Dhahbi, A, additional, Bertolin, A, additional, Besnier, M, additional, Bozza, C, additional, Brugière, T, additional, Brugnera, R, additional, Brunet, F, additional, Brunetti, G, additional, Buontempo, S, additional, Cazes, A, additional, Chaussard, L, additional, Chernyavskiy, M, additional, Chiarella, V, additional, Chukanov, A, additional, D'Ambrosio, N, additional, Dal Corso, F, additional, De Lellis, G, additional, del Amo Sanchez, P, additional, Déclais, Y, additional, De Serio, M, additional, Di Capua, F, additional, Di Crescenzo, A, additional, Di Ferdinando, D, additional, Di Marco, N, additional, Dmitrievski, S, additional, Dracos, M, additional, Duchesneau, D, additional, Dusini, S, additional, Dzhatdoev, T, additional, Ebert, J, additional, Egorov, O, additional, Enikeev, R, additional, Ereditato, A, additional, S Esposito, L, additional, Favier, J, additional, Ferber, T, additional, A Fini, R, additional, Frekers, D, additional, Fukuda, T, additional, Garfagnini, A, additional, Giacomelli, G, additional, Giorgini, M, additional, Göllnitz, C, additional, Goldberg, J, additional, Golubkov, D, additional, Goncharova, L, additional, Gornushkin, Y, additional, Grella, G, additional, Grianti, F, additional, M Guler, A, additional, Gustavino, C, additional, Hagner, C, additional, Hamada, K, additional, Hara, T, additional, Hierholzer, M, additional, Hollnagel, A, additional, Hoshino, K, additional, Ieva, M, additional, Ishida, H, additional, Jakovcic, K, additional, Jollet, C, additional, Juget, F, additional, Kamiscioglu, M, additional, Kazuyama, K, additional, H Kim, S, additional, Kimura, M, additional, Kitagawa, N, additional, Klicek, B, additional, Knuesel, J, additional, Kodama, K, additional, Komatsu, M, additional, Kose, U, additional, Kreslo, I, additional, Kubota, H, additional, Lazzaro, C, additional, Lenkeit, J, additional, Lippi, I, additional, Ljubicic, A, additional, Longhin, A, additional, Loverre, P, additional, Lutter, G, additional, Malgin, A, additional, Mandrioli, G, additional, Manai, K, additional, Marteau, J, additional, Matsuo, T, additional, Matveev, V, additional, Mauri, N, additional, Medinaceli, E, additional, Meisel, F, additional, Meregaglia, A, additional, Migliozzi, P, additional, Mikado, S, additional, Miyamoto, S, additional, Monacelli, P, additional, Morishima, K, additional, Moser, U, additional, T Muciaccia, M, additional, Naganawa, N, additional, Naka, T, additional, Nakamura, M, additional, Nakano, T, additional, Naumov, D, additional, Nikitina, V, additional, Niwa, K, additional, Nonoyama, Y, additional, Ogawa, S, additional, Okateva, N, additional, Olshevskiy, A, additional, Paniccia, M, additional, Paoloni, A, additional, D Park, B, additional, G Park, I, additional, Pastore, A, additional, Patrizii, L, additional, Pennacchio, E, additional, Pessard, H, additional, Pretzl, K, additional, Pilipenko, V, additional, Pistillo, C, additional, Polukhina, N, additional, Pozzato, M, additional, Pupilli, F, additional, Rescigno, R, additional, Roganova, T, additional, Rokujo, H, additional, Romano, G, additional, Rosa, G, additional, Rostovtseva, I, additional, Rubbia, A, additional, Russo, A, additional, Ryasny, V, additional, Ryazhskaya, O, additional, Sato, O, additional, Sato, Y, additional, Schembri, A, additional, Schmidt-Parzefall, W, additional, Schroeder, H, additional, Scotto Lavina, L, additional, Sheshukov, A, additional, Shibuya, H, additional, Shoziyoev, G, additional, Simone, S, additional, Sioli, M, additional, Sirignano, C, additional, Sirri, G, additional, S Song, J, additional, Spinetti, M, additional, Stanco, L, additional, Starkov, N, additional, Stipcevic, M, additional, Strauss, T, additional, Strolin, P, additional, Takahashi, S, additional, Tenti, M, additional, Terranova, F, additional, Tezuka, I, additional, Tioukov, V, additional, Tolun, P, additional, Trabelsi, A, additional, Tran, T, additional, Tufanli, S, additional, Vilain, P, additional, Vladimirov, M, additional, Votano, L, additional, L Vuilleumier, J, additional, Wilquet, G, additional, Wonsak, B, additional, Yakushev, V, additional, S Yoon, C, additional, Yoshioka, T, additional, Yoshida, J, additional, Zaitsev, Y, additional, Zemskova, S, additional, Zghiche, A, additional, and Zimmermann, R, additional

Published
2012
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