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

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...

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Veröffentlicht in:	Physical review. D 2017-10, Vol.96 (7), p.072006, Article 072006
Hauptverfasser:	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., Dharmapalan, R., Ding, P., Djurcic, Z., Dukes, E. C., Duyang, H., Edayath, S., Ehrlich, R., Feldman, G. J., Frank, M. J., Gabrielyan, M., Gallagher, H. R., Germani, S., Ghosh, T., Giri, A., Gomes, R. A., Goodman, M. C., Grichine, V., Groh, M., Group, R., Grover, D., Guo, B., Habig, A., Hartnell, J., Hatcher, R., Hatzikoutelis, A., Heller, K., Himmel, A., Holin, A., Howard, B., Hylen, J., Jediny, F., Judah, M., Kafka, G. K., Kalra, D., Kasahara, S. M. S., Kasetti, S., Keloth, R., Kolupaeva, L., Kotelnikov, S., Kourbanis, I., Kreymer, A., Kumar, A., Kurbanov, S., Lackey, T., Lang, K., Lee, W. M., Lin, S., Lokajicek, M., Lozier, J., Luchuk, S., Maan, K., Magill, S., Mann, W. A., Marshak, M. L., Matera, K., Matveev, V., Méndez, D. P., Messier, M. D., Meyer, H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Constraint modelling Neutrinos PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Sensors
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Zusammenfassung:	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
ISSN:	2470-0010 2470-0029
DOI:	10.1103/PhysRevD.96.072006