Final results of the search for νμ → νe oscillations with the OPERA detector in the CNGS beam

The OPERA collaboration, Tomoko Ariga

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The OPERA experiment has discovered the tau neutrino appearance in the CNGS muon neutrino beam, in agreement with the 3 neutrino flavour oscillation hypothesis. The OPERA neutrino interaction target, made of Emulsion Cloud Chambers, was particularly efficient in the reconstruction of electromagnetic showers. Moreover, thanks to the very high granularity of the emulsion films, showers induced by electrons can be distinguished from those induced by π0s, thus allowing the detection of charged current interactions of electron neutrinos. In this paper the results of the search for electron neutrino events using the full dataset are reported. An improved method for the electron neutrino energy estimation is exploited. Data are compatible with the 3 neutrino flavour mixing model expectations and are used to set limits on the oscillation parameters of the 3+1 neutrino mixing model, in which an additional mass eigenstate m4 is introduced. At high Δm412 (≳0.1 eV2), an upper limit on sin2μe is set to 0.021 at 90% C.L. and Δm412 ≳ 4 × 10− 3 eV2 is excluded for maximal mixing in appearance mode.[Figure not available: see fulltext.].

Original languageEnglish
Article number151
JournalJournal of High Energy Physics
Volume2018
Issue number6
DOIs
Publication statusPublished - Jun 1 2018

Fingerprint

neutrinos
oscillations
detectors
showers
emulsions
electrons
cloud chambers
neutrino beams
muons
eigenvectors
interactions
electromagnetism

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Final results of the search for νμ → νe oscillations with the OPERA detector in the CNGS beam. / The OPERA collaboration ; Ariga, Tomoko.

In: Journal of High Energy Physics, Vol. 2018, No. 6, 151, 01.06.2018.

Research output: Contribution to journalArticle

@article{4714e9793c854baa8f47e2269c4d04e0,
title = "Final results of the search for νμ → νe oscillations with the OPERA detector in the CNGS beam",
abstract = "The OPERA experiment has discovered the tau neutrino appearance in the CNGS muon neutrino beam, in agreement with the 3 neutrino flavour oscillation hypothesis. The OPERA neutrino interaction target, made of Emulsion Cloud Chambers, was particularly efficient in the reconstruction of electromagnetic showers. Moreover, thanks to the very high granularity of the emulsion films, showers induced by electrons can be distinguished from those induced by π0s, thus allowing the detection of charged current interactions of electron neutrinos. In this paper the results of the search for electron neutrino events using the full dataset are reported. An improved method for the electron neutrino energy estimation is exploited. Data are compatible with the 3 neutrino flavour mixing model expectations and are used to set limits on the oscillation parameters of the 3+1 neutrino mixing model, in which an additional mass eigenstate m4 is introduced. At high Δm412 (≳0.1 eV2), an upper limit on sin2 2θμe is set to 0.021 at 90{\%} C.L. and Δm412 ≳ 4 × 10− 3 eV2 is excluded for maximal mixing in appearance mode.[Figure not available: see fulltext.].",
author = "{The OPERA collaboration} and N. Agafonova and A. Aleksandrov and A. Anokhina and S. Aoki and A. Ariga and Tomoko Ariga and A. Bertolin and C. Bozza and R. Brugnera and A. Buonaura and S. Buontempo and M. Chernyavskiy 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. Dmitrievsky and M. Dracos and D. Duchesneau and S. Dusini and T. Dzhatdoev and J. Ebert and A. Ereditato and J. Favier and Fini, {R. A.} and F. Fornari and T. Fukuda and G. Galati and A. Garfagnini and V. Gentile and J. Goldberg and Y. Gornushkin and S. Gorbunov and G. Grella and Guler, {A. M.} and C. Gustavino and C. Hagner and T. Hara and T. Hayakawa and A. Hollnagel and B. Hosseini and K. Ishiguro and A. Iuliano and K. Jakovcic and C. Jollet",
year = "2018",
month = "6",
day = "1",
doi = "10.1007/JHEP06(2018)151",
language = "English",
volume = "2018",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Verlag",
number = "6",

}

TY - JOUR

T1 - Final results of the search for νμ → νe oscillations with the OPERA detector in the CNGS beam

AU - The OPERA collaboration

AU - Agafonova, N.

AU - Aleksandrov, A.

AU - Anokhina, A.

AU - Aoki, S.

AU - Ariga, A.

AU - Ariga, Tomoko

AU - Bertolin, A.

AU - Bozza, C.

AU - Brugnera, R.

AU - Buonaura, A.

AU - Buontempo, S.

AU - Chernyavskiy, M.

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 - Dmitrievsky, S.

AU - Dracos, M.

AU - Duchesneau, D.

AU - Dusini, S.

AU - Dzhatdoev, T.

AU - Ebert, J.

AU - Ereditato, A.

AU - Favier, J.

AU - Fini, R. A.

AU - Fornari, F.

AU - Fukuda, T.

AU - Galati, G.

AU - Garfagnini, A.

AU - Gentile, V.

AU - Goldberg, J.

AU - Gornushkin, Y.

AU - Gorbunov, S.

AU - Grella, G.

AU - Guler, A. M.

AU - Gustavino, C.

AU - Hagner, C.

AU - Hara, T.

AU - Hayakawa, T.

AU - Hollnagel, A.

AU - Hosseini, B.

AU - Ishiguro, K.

AU - Iuliano, A.

AU - Jakovcic, K.

AU - Jollet, C.

PY - 2018/6/1

Y1 - 2018/6/1

N2 - The OPERA experiment has discovered the tau neutrino appearance in the CNGS muon neutrino beam, in agreement with the 3 neutrino flavour oscillation hypothesis. The OPERA neutrino interaction target, made of Emulsion Cloud Chambers, was particularly efficient in the reconstruction of electromagnetic showers. Moreover, thanks to the very high granularity of the emulsion films, showers induced by electrons can be distinguished from those induced by π0s, thus allowing the detection of charged current interactions of electron neutrinos. In this paper the results of the search for electron neutrino events using the full dataset are reported. An improved method for the electron neutrino energy estimation is exploited. Data are compatible with the 3 neutrino flavour mixing model expectations and are used to set limits on the oscillation parameters of the 3+1 neutrino mixing model, in which an additional mass eigenstate m4 is introduced. At high Δm412 (≳0.1 eV2), an upper limit on sin2 2θμe is set to 0.021 at 90% C.L. and Δm412 ≳ 4 × 10− 3 eV2 is excluded for maximal mixing in appearance mode.[Figure not available: see fulltext.].

AB - The OPERA experiment has discovered the tau neutrino appearance in the CNGS muon neutrino beam, in agreement with the 3 neutrino flavour oscillation hypothesis. The OPERA neutrino interaction target, made of Emulsion Cloud Chambers, was particularly efficient in the reconstruction of electromagnetic showers. Moreover, thanks to the very high granularity of the emulsion films, showers induced by electrons can be distinguished from those induced by π0s, thus allowing the detection of charged current interactions of electron neutrinos. In this paper the results of the search for electron neutrino events using the full dataset are reported. An improved method for the electron neutrino energy estimation is exploited. Data are compatible with the 3 neutrino flavour mixing model expectations and are used to set limits on the oscillation parameters of the 3+1 neutrino mixing model, in which an additional mass eigenstate m4 is introduced. At high Δm412 (≳0.1 eV2), an upper limit on sin2 2θμe is set to 0.021 at 90% C.L. and Δm412 ≳ 4 × 10− 3 eV2 is excluded for maximal mixing in appearance mode.[Figure not available: see fulltext.].

UR - http://www.scopus.com/inward/record.url?scp=85049314445&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85049314445&partnerID=8YFLogxK

U2 - 10.1007/JHEP06(2018)151

DO - 10.1007/JHEP06(2018)151

M3 - Article

AN - SCOPUS:85049314445

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

IS - 6

M1 - 151

ER -