Search for ν μ→ ν τ oscillation with the OPERA experiment in the CNGS beam

N. Agafonova; A. Aleksandrov; O. Altinok; A. Anokhina; S. Aoki; A. Ariga; T. Ariga; D. Autiero; A. Badertscher; A. Bagulya; A. Ben Dhahbi; A. Bertolin; C. Bozza; T. Brugière; R. Brugnera; F. Brunet; G. Brunetti; S. Buontempo; A. Cazes; L. Chaussard; M. Chernyavskiy; V. Chiarella; A. Chukanov; N. D'Ambrosio; F. Dal Corso; Y. Déclais; P. Del Amo Sanchez; G. De Lellis; M. De Serio; F. Di Capua; A. Di Crescenzo; D. Di Ferdinando; N. Di Marco; S. Dmitrievski; 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; A. Garfagnini; G. Giacomelli; M. Giorgini; C. Göllnitz; J. Goldberg; D. Golubkov; L. Goncharova; Y. Gornushkin; G. Grella; F. Grianti; A. M. Guler; C. Gustavino; C. Hagner; K. Hamada; T. Hara; M. Hierholzer; A. Hollnagel; K. Hoshino; M. Ieva; H. Ishida; K. Ishiguro; K. Jakovcic; C. Jollet; F. Juget; M. Kamiscioglu; S. H. Kim; M. Kimura; N. Kitagawa; B. Klicek; J. Knuesel; K. Kodama; K. Kogiso; M. Komatsu; U. Kose; I. Kreslo; C. Lazzaro; J. Lenkeit; I. Lippi; A. Ljubicic; A. Longhin; P. Loverre; G. Lutter; A. Malgin; G. Mandrioli; K. Mannai; 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; N. Okateva; A. Olshevsky; T. Omura; O. Palamara; M. Paniccia; 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; T. Roganova; H. Rokujo; G. Romano; G. Rosa; I. Rostovtseva; A. Rubbia; A. Russo; V. Ryasny; O. Ryazhskaya; O. Sato; Y. Sato; A. Schembri; W. Schmidt-Parzefall; L. Scotto Lavina; A. Sheshukov; H. Shibuya; G. Shoziyoev; S. Simone; M. Sioli; C. Sirignano; G. Sirri; J. S. Song; M. Spinetti; L. Stanco; N. Starkov; M. Stellacci; 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:10.1088/1367-2630/14/3/033017

Search for ν _μ→ ν _τ oscillation with the OPERA experiment in the CNGS beam

N. Agafonova, A. Aleksandrov, O. Altinok, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, D. Autiero, A. Badertscher, A. Bagulya, A. Ben Dhahbi, A. Bertolin, C. Bozza, T. Brugière, R. Brugnera, F. Brunet, G. Brunetti, S. Buontempo, A. Cazes, L. ChaussardM. Chernyavskiy, V. Chiarella, A. Chukanov, N. D'Ambrosio, F. Dal Corso, Y. Déclais, P. Del Amo Sanchez, G. De Lellis, M. De Serio, F. Di Capua, A. Di Crescenzo, D. Di Ferdinando, N. Di Marco, S. Dmitrievski, 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, A. Garfagnini, G. Giacomelli, M. Giorgini, C. Göllnitz, J. Goldberg, D. Golubkov, L. Goncharova, Y. Gornushkin, G. Grella, F. Grianti, A. M. Guler, C. Gustavino, C. Hagner, K. Hamada, T. Hara, M. Hierholzer, A. Hollnagel, K. Hoshino, M. Ieva, H. Ishida, K. Ishiguro, K. Jakovcic, C. Jollet, F. Juget, M. Kamiscioglu, S. H. Kim, M. Kimura, N. Kitagawa, B. Klicek, J. Knuesel, K. Kodama, K. Kogiso, M. Komatsu, U. Kose, I. Kreslo, C. Lazzaro, J. Lenkeit, I. Lippi, A. Ljubicic, A. Longhin, P. Loverre, G. Lutter, A. Malgin, G. Mandrioli, K. Mannai, 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, N. Okateva, A. Olshevsky, T. Omura, O. Palamara, M. Paniccia, 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, T. Roganova, H. Rokujo, G. Romano, G. Rosa, I. Rostovtseva, A. Rubbia, A. Russo, V. Ryasny, O. Ryazhskaya, O. Sato, Y. Sato, A. Schembri, W. Schmidt-Parzefall, L. Scotto Lavina, A. Sheshukov, H. Shibuya, G. Shoziyoev, S. Simone, M. Sioli, C. Sirignano, G. Sirri, J. S. Song, M. Spinetti, L. Stanco, N. Starkov, M. Stellacci, 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

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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 vμ→ v _τ channel, the v _τ 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 v _τ 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%.

Original language	English
Article number	33017
Journal	New Journal of Physics
Volume	14
DOIs	https://doi.org/10.1088/1367-2630/14/3/033017
Publication status	Published - Mar 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1088/1367-2630/14/3/033017

Cite this

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., Brugière, T., Brugnera, R., Brunet, F., Brunetti, G., Buontempo, S., Cazes, A., ... Zimmermann, R. (2012). Search for ν _μ→ ν _τ oscillation with the OPERA experiment in the CNGS beam. New Journal of Physics, 14, Article 33017. https://doi.org/10.1088/1367-2630/14/3/033017

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, 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, Déclais, 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, LS, Favier, J, Ferber, T, Fini, RA, 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, AM, 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, SH, 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, 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, MT, 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, BD, Park, IG, 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, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, 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, JS, 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, JL, Wilquet, G, Wonsak, B, Yakushev, V, Yoon, CS, Yoshida, J, Yoshioka, T, Zaitsev, Y, Zemskova, S, Zghiche, A & Zimmermann, R 2012, 'Search for ν _μ→ ν _τ oscillation with the OPERA experiment in the CNGS beam', New Journal of Physics, vol. 14, 33017. https://doi.org/10.1088/1367-2630/14/3/033017

@article{acefc1baea4e48169f4d63ff290340ae,

title = "Search for ν μ→ ν τ oscillation with the OPERA experiment in the CNGS beam",

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 vμ→ v τ channel, the v τ 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 v τ 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%.",

author = "N. Agafonova and A. Aleksandrov and O. Altinok and A. Anokhina and S. Aoki and A. Ariga and T. Ariga and D. Autiero and A. Badertscher and A. Bagulya and {Ben Dhahbi}, A. and A. Bertolin 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. Chernyavskiy and V. Chiarella and A. Chukanov and N. D'Ambrosio and {Dal Corso}, F. and Y. D{\'e}clais 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 S. Dmitrievski 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 A. Garfagnini and G. Giacomelli and M. Giorgini and C. G{\"o}llnitz and J. Goldberg 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 A. Hollnagel 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 Kim, {S. H.} and M. Kimura and N. Kitagawa and B. Klicek and J. Knuesel and K. Kodama and K. Kogiso and M. Komatsu and U. Kose and I. Kreslo and C. Lazzaro and J. Lenkeit and I. Lippi and A. Ljubicic and A. Longhin and P. Loverre and G. Lutter and A. Malgin and G. Mandrioli and K. Mannai 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 N. Okateva and A. Olshevsky and T. Omura and O. Palamara 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 C. Pistillo and N. Polukhina and M. Pozzato and K. Pretzl and F. Pupilli 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 O. Sato and Y. Sato and A. Schembri and W. Schmidt-Parzefall and {Scotto Lavina}, L. and A. Sheshukov and H. Shibuya and G. Shoziyoev 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. Stellacci 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",

year = "2012",

month = mar,

doi = "10.1088/1367-2630/14/3/033017",

language = "English",

volume = "14",

journal = "New Journal of Physics",

issn = "1367-2630",

publisher = "IOP Publishing Ltd.",

}

TY - JOUR

T1 - Search for ν μ→ ν τ oscillation with the OPERA experiment in the CNGS beam

AU - Agafonova, N.

AU - Aleksandrov, A.

AU - Altinok, O.

AU - Anokhina, A.

AU - Aoki, S.

AU - Ariga, A.

AU - Ariga, T.

AU - Autiero, D.

AU - Badertscher, A.

AU - Bagulya, A.

AU - Ben Dhahbi, A.

AU - Bertolin, A.

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 - Chernyavskiy, M.

AU - Chiarella, V.

AU - Chukanov, A.

AU - D'Ambrosio, N.

AU - Dal Corso, F.

AU - Déclais, 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 - Dmitrievski, 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 - Garfagnini, A.

AU - Giacomelli, G.

AU - Giorgini, M.

AU - Göllnitz, C.

AU - Goldberg, J.

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 - Hollnagel, A.

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 - Kim, S. H.

AU - Kimura, M.

AU - Kitagawa, N.

AU - Klicek, B.

AU - Knuesel, J.

AU - Kodama, K.

AU - Kogiso, K.

AU - Komatsu, M.

AU - Kose, U.

AU - Kreslo, I.

AU - Lazzaro, C.

AU - Lenkeit, J.

AU - Lippi, I.

AU - Ljubicic, A.

AU - Longhin, A.

AU - Loverre, P.

AU - Lutter, G.

AU - Malgin, A.

AU - Mandrioli, G.

AU - Mannai, K.

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 - Okateva, N.

AU - Olshevsky, A.

AU - Omura, T.

AU - Palamara, O.

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 - Pistillo, C.

AU - Polukhina, N.

AU - Pozzato, M.

AU - Pretzl, K.

AU - Pupilli, F.

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 - Sato, O.

AU - Sato, Y.

AU - Schembri, A.

AU - Schmidt-Parzefall, W.

AU - Scotto Lavina, L.

AU - Sheshukov, A.

AU - Shibuya, H.

AU - Shoziyoev, G.

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 - Stellacci, M.

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.

PY - 2012/3

Y1 - 2012/3

N2 - 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 vμ→ v τ channel, the v τ 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 v τ 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%.

AB - 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 vμ→ v τ channel, the v τ 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 v τ 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%.

UR - http://www.scopus.com/inward/record.url?scp=84859602720&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84859602720&partnerID=8YFLogxK

U2 - 10.1088/1367-2630/14/3/033017

DO - 10.1088/1367-2630/14/3/033017

M3 - Article

AN - SCOPUS:84859602720

SN - 1367-2630

VL - 14

JO - New Journal of Physics

JF - New Journal of Physics

M1 - 33017

ER -

Search for ν _μ→ ν _τ oscillation with the OPERA experiment in the CNGS beam

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