First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA

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Authors
Meyer, Holger
Muether, Mathew
Solomey, Nickolas
Advisors
Issue Date
2019-10-11
Type
Article
Keywords
Research Projects
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Citation
Acero, M., Adamson, P., Aliaga, L., Alion, T., Allakhverdian, V., Altakarli, S., Anfimov, N., Antoshkin, A., Aurisano, A., Back, A., Backhouse, C., Baird, M., Balashov, N., Baldi, P., Bambah, B., Bashar, S., Bays, K., Bending, S., Bernstein, R., Bhatnagar, V., Bhuyan, B., Bian, J., Blackburn, T., Blair, J., Booth, A., Bour, P., Bromberg, C., Buchanan, N., Butkevich, A., Calvez, S., Campbell, M., Carroll, T., Catano-Mur, E., Cedeno, A., Childress, S., Choudhary, B., Chowdhury, B., Coan, T., Colo, M., Cooper, J., Corwin, L., Cremonesi, L., Davies, G., Derwent, P., Ding, P., Djurcic, Z., Doyle, D., Dukes, E., Duyang, H., Edayath, S., Ehrlich, R., Elkins, M., Feldman, G., Filip, P., Flanagan, W., Frank, M., Gallagher, H., Gandrajula, R., Gao, F., Germani, S., Giri, A., Gomes, R., Goodman, M., Grichine, V., Groh, M., Group, R., Guo, B., Habig, A., Hakl, F., Hartnell, J., Hatcher, R., Hatzikoutelis, A., Heller, K., Hewes, J., Himmel, A., Holin, A., Howard, B., Huang, J., Hylen, J., Jediny, F., Johnson, C., Judah, M., Kakorin, I., Kalra, D., Kaplan, D., Keloth, R., Klimov, O., Koerner, L., Kolupaeva, L., Kotelnikov, S., Kourbanis, I., Kreymer, A., Kulenberg, C., Kumar, A., Kuruppu, C., Kus, V., Lackey, T., Lang, K., Lin, S., Lokajicek, M., Lozier, J., Luchuk, S., Maan, K., Magill, S., Mann, W., Marshak, M., Martinez-Casales, M., Matveev, V., Mendez, D., Messier, M., Meyer, H., Miao, T., Miller, W., Mishra, S., Mislivec, A., Mohanta, R., Moren, A., Mualem, L., Muether, M., Mufson, S., Mulder, K., Murphy, R., Musser, J., Naples, D., Nayak, N., Nelson, J., Nichol, R., Nikseresht, G., Niner, E., Norman, A., Nosek, T., Olshevskiy, A., Olson, T., Paley, J., Patterson, R., Pawloski, G., Pershey, D., Petrova, O., Petti, R., Phan, D., Plunkett, R., Potukuchi, B., Principato, C., Psihas, F., Radovic, A., Raj, V., Rameika, R., Rebel, B., Rojas, P., Ryabov, V., Samoylov, O., Sanchez, M., Sánchez Falero, S., Seong, I., Shanahan, P., Sheshukov, A., Singh, P., Singh, V., Smith, E., Smolik, J., Snopok, P., Solomey, N., Song, E., Sousa, A., Soustruznik, K., Strait, M., Suter, L., Sutton, A., Talaga, R., Tapia Oregui, B., Tas, P., Thayyullathil, R., Thomas, J., Tiras, E., Torbunov, D., Tripathi, J., Tsaris, A., Torun, Y., Urheim, J., Vahle, P., Vasel, J., Vinton, L., Vokac, P., Vrba, T., Wallbank, M., Wang, B., Warburton, T., Wetstein, M., While, M., Whittington, D., Wojcicki, S., Wolcott, J., Yadav, N., Yallappa Dombara, A., Yonehara, K., Yu, S., Zadorozhnyy, S., Zalesak, J., Zamorano, B., & Zwaska, R. (2019). First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA. Phys. Rev. Lett., 123, 151803.
Abstract

The NOvA experiment has seen a 4.4σ signal of ν̄e appearance in a 2 GeV ν̄μ beam at a distance of 810 km. Using 12.33×1020 protons on target delivered to the Fermilab NuMI neutrino beamline, the experiment recorded 27 ν̄μ→ν̄e candidates with a background of 10.3 and 102 ν̄μ→ν̄μ candidates. This new antineutrino data are combined with neutrino data to measure the parameters |Δm322|=2.48-0.06+0.11×10-3 eV2/c4 and sin2θ23 in the ranges from (0.53-0.60) and (0.45-0.48) in the normal neutrino mass hierarchy. The data exclude most values near δCP=π/2 for the inverted mass hierarchy by more than 3σ and favor the normal neutrino mass hierarchy by 1.9σ and θ23 values in the upper octant by 1.6σ. © 2019 authors. Published by the American Physical Society.

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Description
This is an open access article under the CC BY license.
Publisher
American Physical Society
Journal
Physical Review Letters
Book Title
Series
URI
https://hdl.handle.net/10057/31107
PubMed ID
DOI
10.1103/PhysRevLett.123.151803
ISSN
00319007
EISSN
Collections
PHY Research Publications (from 2011)