Measurement of the Neutrino Mixing Angle θ23 in NOvA

P. Adamson, L. Aliaga, D. Ambrose, N. Anfimov, A. Antoshkin, E. Arrieta-Diaz, K. Augsten, A. Aurisano, C. Backhouse, M. Baird, B. A. Bambah, K. Bays, B. Behera, S. Bending, R. Bernstein, V. Bhatnagar, B. Bhuyan, J. Bian, T. Blackburn, A. Bolshakova & 31 others C. Bromberg, J. Brown, G. Brunetti, N. Buchanan, A. Butkevich, V. Bychkov, M. Campbell, E. Catano-Mur, S. Childress, B. C. Choudhary, B. Chowdhury, T. E. Coan, J. A.B. Coelho, M. Colo, J. Cooper, L. Corwin, L. Cremonesi, D. Cronin-Hennessy, G. S. Davies, J. P. Davies, P. F. Derwent, S. Desai, R. Dharmapalan, M. Gabrielyan, A. Habig, K. Heller, M. L. Marshak, G. Pawloski, R. Poling, M. Strait, NOvA Collaboration

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Abstract

This Letter reports new results on muon neutrino disappearance from NOvA, using a 14 kton detector equivalent exposure of 6.05×1020 protons on target from the NuMI beam at the Fermi National Accelerator Laboratory. The measurement probes the muon-tau symmetry hypothesis that requires maximal θ23 mixing (θ23=π/4). Assuming the normal mass hierarchy, we find Δm322=(2.67±0.11)×10-3 eV2 and sin2θ23 at the two statistically degenerate values 0.404-0.022+0.030 and 0.624-0.030+0.022, both at the 68% confidence level. Our data disfavor the maximal mixing scenario with 2.6σ significance.

Original languageEnglish (US)
Article number151802
JournalPhysical Review Letters
Volume118
Issue number15
DOIs
StatePublished - Apr 10 2017

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muons
neutrinos
hierarchies
confidence
accelerators
protons
probes
detectors
symmetry

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Adamson, P., Aliaga, L., Ambrose, D., Anfimov, N., Antoshkin, A., Arrieta-Diaz, E., ... NOvA Collaboration (2017). Measurement of the Neutrino Mixing Angle θ23 in NOvA. Physical Review Letters, 118(15), [151802]. https://doi.org/10.1103/PhysRevLett.118.151802

Measurement of the Neutrino Mixing Angle θ23 in NOvA. / Adamson, P.; Aliaga, L.; Ambrose, D.; Anfimov, N.; Antoshkin, A.; Arrieta-Diaz, E.; Augsten, K.; Aurisano, A.; Backhouse, C.; Baird, M.; Bambah, B. A.; Bays, K.; Behera, B.; Bending, S.; Bernstein, R.; Bhatnagar, V.; Bhuyan, B.; Bian, J.; Blackburn, T.; Bolshakova, A.; Bromberg, C.; Brown, J.; Brunetti, G.; Buchanan, N.; Butkevich, A.; Bychkov, V.; Campbell, M.; Catano-Mur, E.; Childress, S.; Choudhary, B. C.; Chowdhury, B.; Coan, T. E.; Coelho, J. A.B.; Colo, M.; Cooper, J.; Corwin, L.; Cremonesi, L.; Cronin-Hennessy, D.; Davies, G. S.; Davies, J. P.; Derwent, P. F.; Desai, S.; Dharmapalan, R.; Gabrielyan, M.; Habig, A.; Heller, K.; Marshak, M. L.; Pawloski, G.; Poling, R.; Strait, M.; NOvA Collaboration.

In: Physical Review Letters, Vol. 118, No. 15, 151802, 10.04.2017.

Research output: Contribution to journalArticle

Adamson, P, Aliaga, L, Ambrose, D, Anfimov, N, Antoshkin, A, Arrieta-Diaz, E, Augsten, K, Aurisano, A, Backhouse, C, Baird, M, Bambah, BA, Bays, K, Behera, B, Bending, S, Bernstein, R, Bhatnagar, V, Bhuyan, B, Bian, J, Blackburn, T, Bolshakova, A, Bromberg, C, Brown, J, Brunetti, G, Buchanan, N, Butkevich, A, Bychkov, V, Campbell, M, Catano-Mur, E, Childress, S, Choudhary, BC, Chowdhury, B, Coan, TE, Coelho, JAB, Colo, M, Cooper, J, Corwin, L, Cremonesi, L, Cronin-Hennessy, D, Davies, GS, Davies, JP, Derwent, PF, Desai, S, Dharmapalan, R, Gabrielyan, M, Habig, A, Heller, K, Marshak, ML, Pawloski, G, Poling, R, Strait, M & NOvA Collaboration 2017, 'Measurement of the Neutrino Mixing Angle θ23 in NOvA', Physical Review Letters, vol. 118, no. 15, 151802. https://doi.org/10.1103/PhysRevLett.118.151802
Adamson P, Aliaga L, Ambrose D, Anfimov N, Antoshkin A, Arrieta-Diaz E et al. Measurement of the Neutrino Mixing Angle θ23 in NOvA. Physical Review Letters. 2017 Apr 10;118(15). 151802. https://doi.org/10.1103/PhysRevLett.118.151802
Adamson, P. ; Aliaga, L. ; Ambrose, D. ; Anfimov, N. ; Antoshkin, A. ; Arrieta-Diaz, E. ; Augsten, K. ; Aurisano, A. ; Backhouse, C. ; Baird, M. ; Bambah, B. A. ; Bays, K. ; Behera, B. ; Bending, S. ; Bernstein, R. ; Bhatnagar, V. ; Bhuyan, B. ; Bian, J. ; Blackburn, T. ; Bolshakova, A. ; Bromberg, C. ; Brown, J. ; Brunetti, G. ; Buchanan, N. ; Butkevich, A. ; Bychkov, V. ; Campbell, M. ; Catano-Mur, E. ; Childress, S. ; Choudhary, B. C. ; Chowdhury, B. ; Coan, T. E. ; Coelho, J. A.B. ; Colo, M. ; Cooper, J. ; Corwin, L. ; Cremonesi, L. ; Cronin-Hennessy, D. ; Davies, G. S. ; Davies, J. P. ; Derwent, P. F. ; Desai, S. ; Dharmapalan, R. ; Gabrielyan, M. ; Habig, A. ; Heller, K. ; Marshak, M. L. ; Pawloski, G. ; Poling, R. ; Strait, M. ; NOvA Collaboration. / Measurement of the Neutrino Mixing Angle θ23 in NOvA. In: Physical Review Letters. 2017 ; Vol. 118, No. 15.
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abstract = "This Letter reports new results on muon neutrino disappearance from NOvA, using a 14 kton detector equivalent exposure of 6.05×1020 protons on target from the NuMI beam at the Fermi National Accelerator Laboratory. The measurement probes the muon-tau symmetry hypothesis that requires maximal θ23 mixing (θ23=π/4). Assuming the normal mass hierarchy, we find Δm322=(2.67±0.11)×10-3 eV2 and sin2θ23 at the two statistically degenerate values 0.404-0.022+0.030 and 0.624-0.030+0.022, both at the 68{\%} confidence level. Our data disfavor the maximal mixing scenario with 2.6σ significance.",
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T1 - Measurement of the Neutrino Mixing Angle θ23 in NOvA

AU - Adamson, P.

AU - Aliaga, L.

AU - Ambrose, D.

AU - Anfimov, N.

AU - Antoshkin, A.

AU - Arrieta-Diaz, E.

AU - Augsten, K.

AU - Aurisano, A.

AU - Backhouse, C.

AU - Baird, M.

AU - Bambah, B. A.

AU - Bays, K.

AU - Behera, B.

AU - Bending, S.

AU - Bernstein, R.

AU - Bhatnagar, V.

AU - Bhuyan, B.

AU - Bian, J.

AU - Blackburn, T.

AU - Bolshakova, A.

AU - Bromberg, C.

AU - Brown, J.

AU - Brunetti, G.

AU - Buchanan, N.

AU - Butkevich, A.

AU - Bychkov, V.

AU - Campbell, M.

AU - Catano-Mur, E.

AU - Childress, S.

AU - Choudhary, B. C.

AU - Chowdhury, B.

AU - Coan, T. E.

AU - Coelho, J. A.B.

AU - Colo, M.

AU - Cooper, J.

AU - Corwin, L.

AU - Cremonesi, L.

AU - Cronin-Hennessy, D.

AU - Davies, G. S.

AU - Davies, J. P.

AU - Derwent, P. F.

AU - Desai, S.

AU - Dharmapalan, R.

AU - Gabrielyan, M.

AU - Habig, A.

AU - Heller, K.

AU - Marshak, M. L.

AU - Pawloski, G.

AU - Poling, R.

AU - Strait, M.

AU - NOvA Collaboration

PY - 2017/4/10

Y1 - 2017/4/10

N2 - This Letter reports new results on muon neutrino disappearance from NOvA, using a 14 kton detector equivalent exposure of 6.05×1020 protons on target from the NuMI beam at the Fermi National Accelerator Laboratory. The measurement probes the muon-tau symmetry hypothesis that requires maximal θ23 mixing (θ23=π/4). Assuming the normal mass hierarchy, we find Δm322=(2.67±0.11)×10-3 eV2 and sin2θ23 at the two statistically degenerate values 0.404-0.022+0.030 and 0.624-0.030+0.022, both at the 68% confidence level. Our data disfavor the maximal mixing scenario with 2.6σ significance.

AB - This Letter reports new results on muon neutrino disappearance from NOvA, using a 14 kton detector equivalent exposure of 6.05×1020 protons on target from the NuMI beam at the Fermi National Accelerator Laboratory. The measurement probes the muon-tau symmetry hypothesis that requires maximal θ23 mixing (θ23=π/4). Assuming the normal mass hierarchy, we find Δm322=(2.67±0.11)×10-3 eV2 and sin2θ23 at the two statistically degenerate values 0.404-0.022+0.030 and 0.624-0.030+0.022, both at the 68% confidence level. Our data disfavor the maximal mixing scenario with 2.6σ significance.

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M3 - Article

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JF - Physical Review Letters

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