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; 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

doi:10.1103/PhysRevLett.118.151802

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. BolshakovaC. 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 language	English (US)
Article number	151802
Journal	Physical Review Letters
Volume	118
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.118.151802
State	Published - Apr 10 2017

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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., ... NOvA Collaboration (2017). Measurement of the Neutrino Mixing Angle θ23 in NOvA. Physical Review Letters, 118(15), Article 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, 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

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title = "Measurement of the Neutrino Mixing Angle θ23 in NOvA",

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.",

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

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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

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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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DO - 10.1103/PhysRevLett.118.151802

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VL - 118

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

M1 - 151802

ER -

Measurement of the Neutrino Mixing Angle θ23 in NOvA

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