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

N. Agafonova, A. Aleksandrov, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, T. Asada, D. Autiero, A. Ben Dhahbi, A. Badertscher, D. Bender, A. Bertolin, C. Bozza, R. Brugnera, F. Brunet, G. Brunetti, A. Buonaura, S. Buontempo, B. Büttner, L. ChaussardM. Chernyavsky, V. Chiarella, A. Chukanov, L. Consiglio, N. D'Ambrosio, G. De Lellis, M. De Serio, P. Del Amo Sanchez, A. Di Crescenzo, D. Di Ferdinando, N. Di Marco, S. Dmitrievski, M. Dracos, D. Duchesneau, S. Dusini, T. Dzhatdoev, J. Ebert, A. Ereditato, J. Favier, T. Ferber, G. Ferone, R. A. Fini, T. Fukuda, G. Galati, A. Garfagnini, G. Giacomelli, C. Goellnitz, J. Goldberg, Y. Gornushkin, G. Grella, F. Grianti, M. Guler, C. Gustavino, C. Hagner, K. Hakamata, T. Hara, T. Hayakawa, M. Hierholzer, A. Hollnagel, B. Hosseini, H. Ishida, K. Ishiguro, M. Ishikawa, K. Jakovcic, C. Jollet, C. Kamiscioglu, M. Kamiscioglu, T. Katsuragawa, J. Kawada, H. Kawahara, J. H. Kim, S. H. Kim, M. Kimura, N. Kitagawa, B. Klicek, K. Kodama, M. Komatsu, U. Kose, I. Kreslo, A. Lauria, J. Lenkeit, A. Ljubicic, A. Longhin, P. Loverre, A. Malgin, G. Mandrioli, J. Marteau, T. Matsuo, V. Matveev, N. Mauri, E. Medinaceli, A. Meregaglia, P. Migliozzi, S. Mikado, M. Miyanishi, E. Miyashita, 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, A. Pastore, L. Patrizii, E. Pennacchio, H. Pessard, C. Pistillo, D. Podgrudkov, N. Polukhina, M. Pozzato, K. Pretzl, F. Pupilli, R. Rescigno, M. Roda, H. Rokujo, T. Roganova, G. Rosa, I. Rostovtseva, A. Rubbia, O. Ryazhskaya, O. Sato, Y. Sato, A. Schembri, W. Schmidt-Parzefal, 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, T. Strauss, P. Strolin, K. Suzuki, 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, J. Yoshida, M. Yoshimoto, Y. Zaitsev, S. Zemskova, A. Zghiche

Research output: Contribution to journalArticle

75 Citations (Scopus)

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.

Original languageEnglish
Article number051102
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume89
Issue number5
DOIs
Publication statusPublished - Mar 5 2014
Externally publishedYes

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neutrino beams
oscillations
hadrons
leptons
neutrinos
decay
interactions

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Evidence for νμ→ντ appearance in the CNGS neutrino beam with the OPERA experiment. / 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. 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.; Zghiche, A.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 89, No. 5, 051102, 05.03.2014.

Research output: Contribution to journalArticle

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, RA, 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, JH, Kim, SH, 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, MC, Morishima, K, Muciaccia, MT, 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, BD, Park, IG, 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, SM, 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, JL, Wilquet, G, Wonsak, B, Yoon, CS, Yoshida, J, Yoshimoto, M, Zaitsev, Y, Zemskova, S & Zghiche, A 2014, 'Evidence for νμ→ντ appearance in the CNGS neutrino beam with the OPERA experiment', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 89, no. 5, 051102. https://doi.org/10.1103/PhysRevD.89.051102
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. 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. ; Zghiche, A. / Evidence for νμ→ντ appearance in the CNGS neutrino beam with the OPERA experiment. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2014 ; Vol. 89, No. 5.
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title = "Evidence for νμ→ντ appearance in the CNGS neutrino beam with the OPERA experiment",
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.",
author = "N. Agafonova and A. Aleksandrov and A. Anokhina and S. Aoki and A. Ariga and T. Ariga and T. Asada and D. Autiero and {Ben Dhahbi}, A. and A. Badertscher and D. Bender and A. Bertolin and C. Bozza and R. Brugnera and F. Brunet and G. Brunetti and A. Buonaura and S. Buontempo and B. B{\"u}ttner and L. Chaussard and M. Chernyavsky and V. Chiarella and A. Chukanov and L. Consiglio and N. D'Ambrosio and {De Lellis}, G. and {De Serio}, M. and {Del Amo Sanchez}, P. 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 A. Ereditato and J. Favier and T. Ferber and G. Ferone and Fini, {R. A.} and T. Fukuda and G. Galati and A. Garfagnini and G. Giacomelli and C. Goellnitz and J. Goldberg and Y. Gornushkin and G. Grella and F. Grianti and M. Guler and C. Gustavino and C. Hagner and K. Hakamata and T. Hara and T. Hayakawa and M. Hierholzer and A. Hollnagel and B. Hosseini and H. Ishida and K. Ishiguro and M. Ishikawa and K. Jakovcic and C. Jollet and C. Kamiscioglu and M. Kamiscioglu and T. Katsuragawa and J. Kawada and H. Kawahara and Kim, {J. H.} and Kim, {S. H.} and M. Kimura and N. Kitagawa and B. Klicek and K. Kodama and M. Komatsu and U. Kose and I. Kreslo and A. Lauria and J. Lenkeit and A. Ljubicic and A. Longhin and P. Loverre and A. Malgin and G. Mandrioli and J. Marteau and T. Matsuo and V. Matveev and N. Mauri and E. Medinaceli and A. Meregaglia and P. Migliozzi and S. Mikado and M. Miyanishi and E. Miyashita and P. Monacelli and Montesi, {M. C.} and K. Morishima and Muciaccia, {M. T.} and N. Naganawa and T. Naka and M. Nakamura and T. Nakano and Y. Nakatsuka and K. Niwa and S. Ogawa and N. Okateva and A. Olshevsky and T. Omura and K. Ozaki 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 D. Podgrudkov and N. Polukhina and M. Pozzato and K. Pretzl and F. Pupilli and R. Rescigno and M. Roda and H. Rokujo and T. Roganova and G. Rosa and I. Rostovtseva and A. Rubbia and O. Ryazhskaya and O. Sato and Y. Sato and A. Schembri and W. Schmidt-Parzefal and I. Shakiryanova and T. Shchedrina and A. Sheshukov and H. Shibuya and T. Shiraishi and G. Shoziyoev and S. Simone and M. Sioli and C. Sirignano and G. Sirri and M. Spinetti and L. Stanco and N. Starkov and Stellacci, {S. M.} and M. Stipcevic and T. Strauss and P. Strolin and K. Suzuki and S. Takahashi and M. Tenti and F. Terranova and V. Tioukov and S. Tufanli and P. Vilain and M. Vladimirov and L. Votano and Vuilleumier, {J. L.} and G. Wilquet and B. Wonsak and Yoon, {C. S.} and J. Yoshida and M. Yoshimoto and Y. Zaitsev and S. Zemskova and A. Zghiche",
year = "2014",
month = "3",
day = "5",
doi = "10.1103/PhysRevD.89.051102",
language = "English",
volume = "89",
journal = "Physical review D: Particles and fields",
issn = "1550-7998",
publisher = "American Institute of Physics",
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TY - JOUR

T1 - Evidence for νμ→ντ appearance in the CNGS neutrino beam with the OPERA experiment

AU - Agafonova, N.

AU - Aleksandrov, A.

AU - Anokhina, A.

AU - Aoki, S.

AU - Ariga, A.

AU - Ariga, T.

AU - Asada, T.

AU - Autiero, D.

AU - Ben Dhahbi, A.

AU - Badertscher, A.

AU - Bender, D.

AU - Bertolin, A.

AU - Bozza, C.

AU - Brugnera, R.

AU - Brunet, F.

AU - Brunetti, G.

AU - Buonaura, A.

AU - Buontempo, S.

AU - Büttner, B.

AU - Chaussard, L.

AU - Chernyavsky, M.

AU - Chiarella, V.

AU - Chukanov, A.

AU - Consiglio, L.

AU - D'Ambrosio, N.

AU - De Lellis, G.

AU - De Serio, M.

AU - Del Amo Sanchez, P.

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 - Ereditato, A.

AU - Favier, J.

AU - Ferber, T.

AU - Ferone, G.

AU - Fini, R. A.

AU - Fukuda, T.

AU - Galati, G.

AU - Garfagnini, A.

AU - Giacomelli, G.

AU - Goellnitz, C.

AU - Goldberg, J.

AU - Gornushkin, Y.

AU - Grella, G.

AU - Grianti, F.

AU - Guler, M.

AU - Gustavino, C.

AU - Hagner, C.

AU - Hakamata, K.

AU - Hara, T.

AU - Hayakawa, T.

AU - Hierholzer, M.

AU - Hollnagel, A.

AU - Hosseini, B.

AU - Ishida, H.

AU - Ishiguro, K.

AU - Ishikawa, M.

AU - Jakovcic, K.

AU - Jollet, C.

AU - Kamiscioglu, C.

AU - Kamiscioglu, M.

AU - Katsuragawa, T.

AU - Kawada, J.

AU - Kawahara, H.

AU - Kim, J. H.

AU - Kim, S. H.

AU - Kimura, M.

AU - Kitagawa, N.

AU - Klicek, B.

AU - Kodama, K.

AU - Komatsu, M.

AU - Kose, U.

AU - Kreslo, I.

AU - Lauria, A.

AU - Lenkeit, J.

AU - Ljubicic, A.

AU - Longhin, A.

AU - Loverre, P.

AU - Malgin, A.

AU - Mandrioli, G.

AU - Marteau, J.

AU - Matsuo, T.

AU - Matveev, V.

AU - Mauri, N.

AU - Medinaceli, E.

AU - Meregaglia, A.

AU - Migliozzi, P.

AU - Mikado, S.

AU - Miyanishi, M.

AU - Miyashita, E.

AU - Monacelli, P.

AU - Montesi, M. C.

AU - Morishima, K.

AU - Muciaccia, M. T.

AU - Naganawa, N.

AU - Naka, T.

AU - Nakamura, M.

AU - Nakano, T.

AU - Nakatsuka, Y.

AU - Niwa, K.

AU - Ogawa, S.

AU - Okateva, N.

AU - Olshevsky, A.

AU - Omura, T.

AU - Ozaki, K.

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 - Podgrudkov, D.

AU - Polukhina, N.

AU - Pozzato, M.

AU - Pretzl, K.

AU - Pupilli, F.

AU - Rescigno, R.

AU - Roda, M.

AU - Rokujo, H.

AU - Roganova, T.

AU - Rosa, G.

AU - Rostovtseva, I.

AU - Rubbia, A.

AU - Ryazhskaya, O.

AU - Sato, O.

AU - Sato, Y.

AU - Schembri, A.

AU - Schmidt-Parzefal, W.

AU - Shakiryanova, I.

AU - Shchedrina, T.

AU - Sheshukov, A.

AU - Shibuya, H.

AU - Shiraishi, T.

AU - Shoziyoev, G.

AU - Simone, S.

AU - Sioli, M.

AU - Sirignano, C.

AU - Sirri, G.

AU - Spinetti, M.

AU - Stanco, L.

AU - Starkov, N.

AU - Stellacci, S. M.

AU - Stipcevic, M.

AU - Strauss, T.

AU - Strolin, P.

AU - Suzuki, K.

AU - Takahashi, S.

AU - Tenti, M.

AU - Terranova, F.

AU - Tioukov, V.

AU - Tufanli, S.

AU - Vilain, P.

AU - Vladimirov, M.

AU - Votano, L.

AU - Vuilleumier, J. L.

AU - Wilquet, G.

AU - Wonsak, B.

AU - Yoon, C. S.

AU - Yoshida, J.

AU - Yoshimoto, M.

AU - Zaitsev, Y.

AU - Zemskova, S.

AU - Zghiche, A.

PY - 2014/3/5

Y1 - 2014/3/5

N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevD.89.051102

DO - 10.1103/PhysRevD.89.051102

M3 - Article

AN - SCOPUS:84896942812

VL - 89

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 5

M1 - 051102

ER -