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

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

doi:10.1016/j.physletb.2010.06.022

Observation of a first ν_τ candidate event in the OPERA experiment in the CNGS beam

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

Research output: Contribution to journal › Article › peer-review

231 Citations (Scopus)

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 ν_μ→ν_τ 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.

Original language	English
Pages (from-to)	138-145
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	691
Issue number	3
DOIs	https://doi.org/10.1016/j.physletb.2010.06.022
Publication status	Published - Jul 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1016/j.physletb.2010.06.022

Cite this

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., ... Zimmermann, R. (2010). Observation of a first ν_τ candidate event in the OPERA experiment in the CNGS beam. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 691(3), 138-145. https://doi.org/10.1016/j.physletb.2010.06.022

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, LS, Favier, J, Ferber, T, Fini, RA, 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, AM, 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, SH, 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, MT, 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, BD, Park, IG, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pilipenko, V, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Publichenko, P, Pupilli, F, Repellin, JP, 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, JS, 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, JL, Wilquet, G, Wonsak, B, Yakushev, V, Yoon, CS, Yoshida, J, Yoshioka, T, Zaitsev, Y, Zemskova, S, Zghiche, A & Zimmermann, R 2010, 'Observation of a first ν_τ candidate event in the OPERA experiment in the CNGS beam', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 691, no. 3, pp. 138-145. https://doi.org/10.1016/j.physletb.2010.06.022

@article{ff0294633ac34d43a2779f19a54d503d,

title = "Observation of a first ντ candidate event in the OPERA experiment in the CNGS beam",

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.",

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

note = "Funding Information: We thank CERN for the commissioning of the CNGS facility and for its successful operation and INFN for the continuous support given to the experiment during the construction, installation and commissioning phases through its LNGS laboratory. We warmly acknowledge funding from our national agencies: Fonds de la Recherche Scientifique – FNRS and Institut Interuniversitaire des Sciences Nucl{\'e}aires for Belgium, MoSES for Croatia, CNRS and IN2P3 for France, BMBF for Germany, INFN for Italy, JSPS (Japan Society for the Promotion of Science) , MEXT (Ministry of Education, Culture, Sports, Science and Technology) , QFPU (Global COE program of Nagoya University, “Quest for Fundamental Principles in the Universe” supported by JSPS and MEXT) and Promotion and Mutual Aid Corporation for Private Schools of Japan , SNF and ETH Zurich for Switzerland, the Russian Federal Property Fund , the Grants 09-02-00300_a , 08-02-91005-CERN , Programs of the Presidium of the Russian Academy of Sciences “Neutrino Physics” and “Experimental and theoretical researches of fundamental interactions connected with work on the accelerator of CERN”, Programs of support of leading schools of thought (Grant 3517.2010.2 ), Federal Agency on a Science and Innovations state contract 02.740.11.5092 for Russia., the Korea Research Foundation Grant ( KRF-2008-313-C00201 ) for Korea. We are also indebted to INFN for providing fellowships and grants to non-Italian researchers. We thank the IN2P3 Computing Centre (CC-IN2P3) for providing computing resources for the analysis and hosting the central database for the OPERA experiment. We are indebted to our technical collaborators for the excellent quality of their work over many years of design, prototyping and construction of the detector and of its facilities. Finally, we thank our industrial partners.",

year = "2010",

month = jul,

doi = "10.1016/j.physletb.2010.06.022",

language = "English",

volume = "691",

pages = "138--145",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "3",

}

TY - JOUR

T1 - Observation of a first ντ candidate event in the OPERA experiment in the CNGS beam

AU - Agafonova, N.

AU - Aleksandrov, A.

AU - Altinok, O.

AU - Ambrosio, M.

AU - Anokhina, A.

AU - Aoki, S.

AU - Ariga, A.

AU - Ariga, T.

AU - Autiero, D.

AU - Badertscher, A.

AU - Bagulya, A.

AU - Bendhabi, A.

AU - Bertolin, A.

AU - Besnier, M.

AU - Bick, D.

AU - Boyarkin, V.

AU - Bozza, C.

AU - Brugière, T.

AU - Brugnera, R.

AU - Brunet, F.

AU - Brunetti, G.

AU - Buontempo, S.

AU - Cazes, A.

AU - Chaussard, L.

AU - Chernyavsky, M.

AU - Chiarella, V.

AU - Chon-Sen, N.

AU - Chukanov, A.

AU - Ciesielski, R.

AU - Dal Corso, F.

AU - D'Ambrosio, N.

AU - Declais, Y.

AU - del Amo Sanchez, P.

AU - De Lellis, G.

AU - De Serio, M.

AU - Di Capua, F.

AU - Di Crescenzo, A.

AU - Di Ferdinando, D.

AU - Di Marco, N.

AU - Di Giovanni, A.

AU - Dmitrievsky, S.

AU - Dracos, M.

AU - Duchesneau, D.

AU - Dusini, S.

AU - Dzhatdoev, T.

AU - Ebert, J.

AU - Egorov, O.

AU - Enikeev, R.

AU - Ereditato, A.

AU - Esposito, L. S.

AU - Favier, J.

AU - Ferber, T.

AU - Fini, R. A.

AU - Frekers, D.

AU - Fukuda, T.

AU - Galkin, V.

AU - Garfagnini, A.

AU - Giacomelli, G.

AU - Giorgini, M.

AU - Goldberg, J.

AU - Göllnitz, C.

AU - Golubkov, D.

AU - Goncharova, L.

AU - Gornushkin, Y.

AU - Grella, G.

AU - Grianti, F.

AU - Guler, A. M.

AU - Gustavino, C.

AU - Hagner, C.

AU - Hamada, K.

AU - Hara, T.

AU - Hierholzer, M.

AU - Hoshino, K.

AU - Ieva, M.

AU - Ishida, H.

AU - Ishiguro, K.

AU - Jakovcic, K.

AU - Jollet, C.

AU - Juget, F.

AU - Kamiscioglu, M.

AU - Kawada, J.

AU - Kazuyama, M.

AU - Kim, S. H.

AU - Kimura, M.

AU - Kitagawa, N.

AU - Klicek, B.

AU - Knuesel, J.

AU - Kodama, K.

AU - Komatsu, M.

AU - Kose, U.

AU - Kreslo, I.

AU - Kubota, H.

AU - Lazzaro, C.

AU - Lenkeit, J.

AU - Lippi, I.

AU - Ljubicic, A.

AU - Longhin, A.

AU - Lutter, G.

AU - Malgin, A.

AU - Mandrioli, G.

AU - Mannai, K.

AU - Marotta, A.

AU - Marteau, J.

AU - Matsuo, T.

AU - Matveev, V.

AU - Mauri, N.

AU - Medinaceli, E.

AU - Meisel, F.

AU - Meregaglia, A.

AU - Migliozzi, P.

AU - Mikado, S.

AU - Miyamoto, S.

AU - Monacelli, P.

AU - Morishima, K.

AU - Moser, U.

AU - Muciaccia, M. T.

AU - Naganawa, N.

AU - Naka, T.

AU - Nakamura, M.

AU - Nakano, T.

AU - Nakatsuka, Y.

AU - Naumov, D.

AU - Nikitina, V.

AU - Niwa, K.

AU - Nonoyama, Y.

AU - Ogawa, S.

AU - Olchevsky, A.

AU - Omura, T.

AU - Orlova, G.

AU - Osedlo, V.

AU - Paniccia, M.

AU - Paoloni, A.

AU - Park, B. D.

AU - Park, I. G.

AU - Pastore, A.

AU - Patrizii, L.

AU - Pennacchio, E.

AU - Pessard, H.

AU - Pilipenko, V.

AU - Pistillo, C.

AU - Polukhina, N.

AU - Pozzato, M.

AU - Pretzl, K.

AU - Publichenko, P.

AU - Pupilli, F.

AU - Repellin, J. P.

AU - Rescigno, R.

AU - Roganova, T.

AU - Rokujo, H.

AU - Romano, G.

AU - Rosa, G.

AU - Rostovtseva, I.

AU - Rubbia, A.

AU - Russo, A.

AU - Ryasny, V.

AU - Ryazhskaya, O.

AU - Sakatani, Y.

AU - Sato, O.

AU - Sato, Y.

AU - Schembri, A.

AU - Schmidt-Parzefall, W.

AU - Schroeder, H.

AU - Scotto Lavina, L.

AU - Sheshukov, A.

AU - Shibuya, H.

AU - Simone, S.

AU - Sioli, M.

AU - Sirignano, C.

AU - Sirri, G.

AU - Song, J. S.

AU - Spinetti, M.

AU - Stanco, L.

AU - Starkov, N.

AU - Stipcevic, M.

AU - Strauss, T.

AU - Strolin, P.

AU - Suzuki, K.

AU - Takahashi, S.

AU - Tenti, M.

AU - Terranova, F.

AU - Tezuka, I.

AU - Tioukov, V.

AU - Tolun, P.

AU - Trabelsi, A.

AU - Tran, T.

AU - Tufanli, S.

AU - Vilain, P.

AU - Vladimirov, M.

AU - Votano, L.

AU - Vuilleumier, J. L.

AU - Wilquet, G.

AU - Wonsak, B.

AU - Yakushev, V.

AU - Yoon, C. S.

AU - Yoshida, J.

AU - Yoshioka, T.

AU - Zaitsev, Y.

AU - Zemskova, S.

AU - Zghiche, A.

AU - Zimmermann, R.

N1 - Funding Information: We thank CERN for the commissioning of the CNGS facility and for its successful operation and INFN for the continuous support given to the experiment during the construction, installation and commissioning phases through its LNGS laboratory. We warmly acknowledge funding from our national agencies: Fonds de la Recherche Scientifique – FNRS and Institut Interuniversitaire des Sciences Nucléaires for Belgium, MoSES for Croatia, CNRS and IN2P3 for France, BMBF for Germany, INFN for Italy, JSPS (Japan Society for the Promotion of Science) , MEXT (Ministry of Education, Culture, Sports, Science and Technology) , QFPU (Global COE program of Nagoya University, “Quest for Fundamental Principles in the Universe” supported by JSPS and MEXT) and Promotion and Mutual Aid Corporation for Private Schools of Japan , SNF and ETH Zurich for Switzerland, the Russian Federal Property Fund , the Grants 09-02-00300_a , 08-02-91005-CERN , Programs of the Presidium of the Russian Academy of Sciences “Neutrino Physics” and “Experimental and theoretical researches of fundamental interactions connected with work on the accelerator of CERN”, Programs of support of leading schools of thought (Grant 3517.2010.2 ), Federal Agency on a Science and Innovations state contract 02.740.11.5092 for Russia., the Korea Research Foundation Grant ( KRF-2008-313-C00201 ) for Korea. We are also indebted to INFN for providing fellowships and grants to non-Italian researchers. We thank the IN2P3 Computing Centre (CC-IN2P3) for providing computing resources for the analysis and hosting the central database for the OPERA experiment. We are indebted to our technical collaborators for the excellent quality of their work over many years of design, prototyping and construction of the detector and of its facilities. Finally, we thank our industrial partners.

PY - 2010/7

Y1 - 2010/7

N2 - 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.

AB - 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.

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U2 - 10.1016/j.physletb.2010.06.022

DO - 10.1016/j.physletb.2010.06.022

M3 - Article

AN - SCOPUS:77954623742

SN - 0370-2693

VL - 691

SP - 138

EP - 145

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3

ER -

Observation of a first ν_τ candidate event in the OPERA experiment in the CNGS beam

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