Search for active-sterile neutrino mixing using neutral-current interactions in NOvA

(The NOvA Collaboration)

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We report results from the first search for sterile neutrinos mixing with active neutrinos through a reduction in the rate of neutral-current interactions over a baseline of 810 km between the NOvA detectors. Analyzing a 14-kton detector equivalent exposure of 6.05×1020 protons-on-target in the NuMI beam at Fermilab, we observe 95 neutral-current candidates at the Far Detector compared with 83.5±9.7(stat)±9.4(syst) events predicted assuming mixing only occurs between active neutrino species. No evidence for νμ→νs transitions is found. Interpreting these results within a 3+1 model, we place constraints on the mixing angles θ24<20.8° and θ34<31.2° at the 90% C.L. for 0.05 eV2≤Δm412≤0.5 eV2, the range of mass splittings that produce no significant oscillations over the Near Detector baseline.

Original languageEnglish (US)
Article number072006
JournalPhysical Review D
Volume96
Issue number7
DOIs
StatePublished - Oct 30 2017
Externally publishedYes

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neutral currents
neutrinos
detectors
interactions
oscillations
protons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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Search for active-sterile neutrino mixing using neutral-current interactions in NOvA. / (The NOvA Collaboration).

In: Physical Review D, Vol. 96, No. 7, 072006, 30.10.2017.

Research output: Contribution to journalArticle

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title = "Search for active-sterile neutrino mixing using neutral-current interactions in NOvA",
abstract = "We report results from the first search for sterile neutrinos mixing with active neutrinos through a reduction in the rate of neutral-current interactions over a baseline of 810 km between the NOvA detectors. Analyzing a 14-kton detector equivalent exposure of 6.05×1020 protons-on-target in the NuMI beam at Fermilab, we observe 95 neutral-current candidates at the Far Detector compared with 83.5±9.7(stat)±9.4(syst) events predicted assuming mixing only occurs between active neutrino species. No evidence for νμ→νs transitions is found. Interpreting these results within a 3+1 model, we place constraints on the mixing angles θ24<20.8° and θ34<31.2° at the 90{\%} C.L. for 0.05 eV2≤Δm412≤0.5 eV2, the range of mass splittings that produce no significant oscillations over the Near Detector baseline.",
author = "{(The 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 R. Dharmapalan and P. Ding and Z. Djurcic and Dukes, {E. C.} and H. Duyang and S. Edayath and R. Ehrlich and Feldman, {G. J.} and Denver Whittington",
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T1 - Search for active-sterile neutrino mixing using neutral-current interactions in NOvA

AU - (The 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 - Dharmapalan, R.

AU - Ding, P.

AU - Djurcic, Z.

AU - Dukes, E. C.

AU - Duyang, H.

AU - Edayath, S.

AU - Ehrlich, R.

AU - Feldman, G. J.

AU - Whittington, Denver

PY - 2017/10/30

Y1 - 2017/10/30

N2 - We report results from the first search for sterile neutrinos mixing with active neutrinos through a reduction in the rate of neutral-current interactions over a baseline of 810 km between the NOvA detectors. Analyzing a 14-kton detector equivalent exposure of 6.05×1020 protons-on-target in the NuMI beam at Fermilab, we observe 95 neutral-current candidates at the Far Detector compared with 83.5±9.7(stat)±9.4(syst) events predicted assuming mixing only occurs between active neutrino species. No evidence for νμ→νs transitions is found. Interpreting these results within a 3+1 model, we place constraints on the mixing angles θ24<20.8° and θ34<31.2° at the 90% C.L. for 0.05 eV2≤Δm412≤0.5 eV2, the range of mass splittings that produce no significant oscillations over the Near Detector baseline.

AB - We report results from the first search for sterile neutrinos mixing with active neutrinos through a reduction in the rate of neutral-current interactions over a baseline of 810 km between the NOvA detectors. Analyzing a 14-kton detector equivalent exposure of 6.05×1020 protons-on-target in the NuMI beam at Fermilab, we observe 95 neutral-current candidates at the Far Detector compared with 83.5±9.7(stat)±9.4(syst) events predicted assuming mixing only occurs between active neutrino species. No evidence for νμ→νs transitions is found. Interpreting these results within a 3+1 model, we place constraints on the mixing angles θ24<20.8° and θ34<31.2° at the 90% C.L. for 0.05 eV2≤Δm412≤0.5 eV2, the range of mass splittings that produce no significant oscillations over the Near Detector baseline.

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