Measurement of the Neutrino Mixing Angle θ23 in NOvA

NOvA Collaboration

doi:10.1103/PhysRevLett.118.151802

Measurement of the Neutrino Mixing Angle θ23 in NOvA

NOvA Collaboration

Research output: Contribution to journal › Article › peer-review

111 Scopus citations

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
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
Externally published	Yes

Funding

This work was supported by the U.S. Department of Energy; the U.S. National Science Foundation; the Department of Science and Technology, India; the European Research Council; the MSMT CR, GA UK, Czech Republic; the RAS, RMES, and RFBR, Russia; CNPq and FAPEG, Brazil; and the state and University of Minnesota. We are grateful for the contributions of the staffs of the University of Minnesota module assembly facility, Argonne National Laboratory, and Fermilab. Fermilab is operated by Fermi Research Alliance, LLC under Contract No.De-AC02-07CH11359 with the U.S. DOE.

Funders	Funder number
Not added	ST/N000307/1, ST/N000285/1
Department of Science and Technology
Fermi Research Alliance, LLC
GA UK, Czech Republic
MSMT
RMES
U.S. DOE
National Science Foundation	1607410, 1506309
U.S. Department of Energy
Argonne National Laboratory
University of Minnesota
Science and Technology Facilities Council	1698510, MINOS/MINOS+
Royal Astronomical Society
European Research Council
Russian Foundation for Basic Research
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Fundação de Amparo à Pesquisa do Estado de Goiás

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10.1103/PhysRevLett.118.151802

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@article{ef52fb8acc8d497bb8ee2c5557eab38d,

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 = "{NOvA Collaboration} and 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 P. Ding and Z. Djurcic and Dukes, {E. C.} and H. Duyang and S. Edayath and R. Ehrlich and Tognini, {S. C.}",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = apr,

day = "10",

doi = "10.1103/PhysRevLett.118.151802",

language = "English",

volume = "118",

journal = "Physical Review Letters",

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T1 - Measurement of the Neutrino Mixing Angle θ23 in NOvA

AU - NOvA Collaboration

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 - Ding, P.

AU - Djurcic, Z.

AU - Dukes, E. C.

AU - Duyang, H.

AU - Edayath, S.

AU - Ehrlich, R.

AU - Tognini, S. C.

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.

UR - http://www.scopus.com/inward/record.url?scp=85017471559&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.118.151802

DO - 10.1103/PhysRevLett.118.151802

M3 - Article

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AN - SCOPUS:85017471559

SN - 0031-9007

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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