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Constraints on Oscillation Parameters from ν_e Appearance and ν_μ Disappearance in NOvA

Adamson, P. and Backhouse, C. and Bays, K. and Lozier, J. and Mualem, L. and Patterson, R. B. and Pershey, D. (2017) Constraints on Oscillation Parameters from ν_e Appearance and ν_μ Disappearance in NOvA. Physical Review Letters, 118 (23). Art. No. 231801. ISSN 0031-9007. doi:10.1103/PhysRevLett.118.231801.

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Results are reported from an improved measurement of ν_μ→ν_e transitions by the NOvA experiment. Using an exposure equivalent to 6.05×10^(20) protons on target, 33 ν_e candidates are observed with a background of 8.2±0.8 (syst.). Combined with the latest NOvA ν_μ disappearance data and external constraints from reactor experiments on sin^2 2θ_(13), the hypothesis of inverted mass hierarchy with θ_(23) in the lower octant is disfavored at greater than 93% C.L. for all values of δ_(CP).

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Mualem, L.0000-0003-3716-5100
Patterson, R. B.0000-0002-5787-9517
Additional Information:© 2017 American Physical Society. Received 10 March 2017; revised manuscript received 9 May 2017; published 5 June 2017. 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 at the University of Minnesota module assembly facility and Ash River Laboratory, Argonne National Laboratory, and Fermilab. Fermilab is operated by Fermi Research Alliance, LLC under Contract No. De-AC02-07CH11359 with the U.S. DOE.
Funding AgencyGrant Number
Department of Science and Technology (India)UNSPECIFIED
European Research Council (ERC)UNSPECIFIED
Ministry of Education Youth and Sports (MEYS) of Czech RepublicUNSPECIFIED
Russian Academy of SciencesUNSPECIFIED
Ministry of Education and Science of the Russian FederationUNSPECIFIED
Russian Foundation for Basic ResearchUNSPECIFIED
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNSPECIFIED
Fundação de Amparo à Pesquisa do Estado de Goiás (FAPEG)UNSPECIFIED
State of MinnesotaUNSPECIFIED
University of MinnesotaUNSPECIFIED
Department of Energy (DOE)DE-AC02-07CH11359
Issue or Number:23
Record Number:CaltechAUTHORS:20170606-143456846
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:77974
Deposited By: Tony Diaz
Deposited On:06 Jun 2017 22:10
Last Modified:15 Nov 2021 17:35

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