Evidence for nu(mu) -> nu(tau) appearance in the CNGS neutrino beam with the OPERA experiment

Date

2014-03-01

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.
Buettner, 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.
Güler, Ali Murat
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.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

134
views

0
downloads

The OPERA experiment is designed to search for nu(mu) -> 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 t decaying into hadrons were observed in a subsample of data of the 2008-2011 runs. Here we report the observation of a third nu(tau) candidate in the tau(-) -> mu(-) decay channel coming from the analysis of a subsample of the 2012 run. Taking into account the estimated background, the absence of nu(mu) -> nu(tau) oscillations is excluded at the 3.4 sigma level.

URI

https://hdl.handle.net/11511/70031

Journal

PHYSICAL REVIEW D

DOI

https://doi.org/10.1103/physrevd.89.051102

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Study of charged hadron multiplicities in charged-current neutrino-lead interactions in the OPERA detector Agafonova, N.; et. al. (Springer Science and Business Media LLC, 2018-01-24) The OPERA experiment was designed to search for nu(mu) -> nu(tau) oscillations in appearance mode through the direct observation of tau neutrinos in the CNGS neutrino beam. In this paper, we report a study of the multiplicity of charged particles produced in charged-current neutrino interactions in lead. We present charged hadron average multiplicities, their dispersion and investigate the KNO scaling in different kinematical regions. The results are presented in detail in the form of tables that can be use...
Discovery of tau Neutrino Appearance in the CNGS Neutrino Beam with the OPERA Experiment Agafonova, N.; et. al. (2015-09-01) The OPERA experiment was designed to search for nu(mu) -> nu(tau) oscillations in appearance mode, i.e., by detecting the tau leptons produced in charged current nu(tau) interactions. The experiment took data from 2008 to 2012 in the CERN Neutrinos to Gran Sasso beam. The observation of the nu(mu) -> nu(tau) appearance, achieved with four candidate events in a subsample of the data, was previously reported. In this Letter, a fifth nu(tau) candidate event, found in an enlarged data sample, is described. Toge...
Observation of tau neutrino appearance in the CNGS beam with the OPERA experiment Agafonova, N.; et. al. (2014-10-01) 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 s...
Procedure for short-lived particle detection in the OPERA experiment and its application to charm decays Agafonova, N.; et. al. (2014-08-01) The OPERA experiment, designed to perform the first observation of nu(mu) -> 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 and applied to the search for charmed hadrons, showing similar decay topologies as ...
Results from the OPERA Experiment in the CNGS Beam Paoloni, Alessandro; et. al. (2018-12-01) The OPERA experiment was designed to observe v(mu) -> v(tau) oscillations through tau appearance on the CERN Neutrino to Gran Sasso (CNGS) beam over a baseline of 730 km. OPERA was a hybrid experiment composed of lead plates and emulsion layers acting as a target for neutrino interactions. The experiment was complemented with electronic detectors: scintillator strips used as Target Trackers and muon spectrometers. A review of the OPERA final results is presented in this paper.

Citation Formats

N. Agafonova et al., “Evidence for nu(mu) -> nu(tau) appearance in the CNGS neutrino beam with the OPERA experiment,” PHYSICAL REVIEW D, pp. 0–0, 2014, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/70031.