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. 2025 Feb 28;134(8):081804.
doi: 10.1103/PhysRevLett.134.081804.

Dual-Baseline Search for Active-to-Sterile Neutrino Oscillations in NOvA

M A Acero  1 B Acharya  2 P Adamson  3 N Anfimov  4 A Antoshkin  4 E Arrieta-Diaz  5 L Asquith  6 A Aurisano  7 A Back  8   9 N Balashov  4 P Baldi  10 B A Bambah  11 E F Bannister  6 A Barros  1 A Bat  12   13 K Bays  14 R Bernstein  3 T J C Bezerra  6 V Bhatnagar  15 D Bhattarai  2 B Bhuyan  16 J Bian  10   14 A C Booth  17   6 R Bowles  8 B Brahma  18 C Bromberg  19 N Buchanan  20 A Butkevich  21 S Calvez  20 T J Carroll  22 E Catano-Mur  23 J P Cesar  24 A Chatla  11 R Chirco  25 B C Choudhary  26 A Christensen  20 M F Cicala  27 T E Coan  28 A Cooleybeck  22 C Cortes-Parra  5 D Coveyou  29 L Cremonesi  17 G S Davies  2 P F Derwent  3 P Ding  3 Z Djurcic  30 K Dobbs  31 M Dolce  32 D Doyle  20 D Dueñas Tonguino  7 E C Dukes  29 A Dye  2 R Ehrlich  29 E Ewart  8 P Filip  33 M J Frank  34 H R Gallagher  35 F Gao  36 A Giri  18 R A Gomes  37 M C Goodman  30 M Groh  20 R Group  29 A Habig  38 F Hakl  39 J Hartnell  6 R Hatcher  3 H Hausner  22 M He  31 K Heller  14 V Hewes  7 A Himmel  3 T Horoho  29 A Ivanova  4 B Jargowsky  10 J Jarosz  20 M Judah  20   36 I Kakorin  4 A Kalitkina  4 D M Kaplan  25 B Kirezli-Ozdemir  13 J Kleykamp  2 O Klimov  4 L W Koerner  31 L Kolupaeva  4 R Kralik  6 A Kumar  15 V Kus  40 T Lackey  3   8 K Lang  24 J Lesmeister  31 A Lister  22 J Liu  10 J A Lock  6 M Lokajicek  33 M MacMahon  27 S Magill  30 W A Mann  35 M T Manoharan  41 M Manrique Plata  8 M L Marshak  14 M Martinez-Casales  3   9 V Matveev  21 B Mehta  15 M D Messier  8 H Meyer  32 T Miao  3 V Mikola  27 W H Miller  14 S Mishra  42 S R Mishra  43 A Mislivec  14 R Mohanta  11 A Moren  38 A Morozova  4 W Mu  3 L Mualem  44 M Muether  32 D Myers  24 D Naples  36 A Nath  16 S Nelleri  41 J K Nelson  23 R Nichol  27 E Niner  3 A Norman  3 A Norrick  3 H Oh  7 A Olshevskiy  4 T Olson  31 M Ozkaynak  27 A Pal  45 J Paley  3 L Panda  45 R B Patterson  44 G Pawloski  14 R Petti  43 R K Plunkett  3 L R Prais  2 M Rabelhofer  8   9 A Rafique  30 V Raj  44 M Rajaoalisoa  7 B Ramson  3 B Rebel  22 P Roy  32 O Samoylov  4 M C Sanchez  46   9 S Sánchez Falero  9 P Shanahan  3 P Sharma  15 A Sheshukov  4 A Shmakov  10 Shivam  16 W Shorrock  6 S Shukla  42 D K Singha  11 I Singh  26 P Singh  26   17 V Singh  42 E Smith  8 J Smolik  40 P Snopok  25 N Solomey  32 A Sousa  7 K Soustruznik  47 M Strait  3   14 L Suter  3 A Sutton  46   9 K Sutton  44 S Swain  45 C Sweeney  27 A Sztuc  27 B Tapia Oregui  24 N Talukdar  43 P Tas  47 T Thakore  7 J Thomas  27 E Tiras  13   9 M Titus  41 Y Torun  25 D Tran  31 J Tripathi  15 J Trokan-Tenorio  23 J Urheim  8 P Vahle  23 Z Vallari  44 J D Villamil  5 K J Vockerodt  17 M Wallbank  7   3 C Weber  14 M Wetstein  9 D Whittington  8   48 D A Wickremasinghe  3 T Wieber  14 J Wolcott  35 M Wrobel  20 S Wu  14 W Wu  10 W Wu  36 Y Xiao  10 B Yaeggy  7 A Yahaya  32 A Yankelevich  10 K Yonehara  3 S Zadorozhnyy  21 J Zalesak  33 R Zwaska  3 NOvA Collaboration
Affiliations

Dual-Baseline Search for Active-to-Sterile Neutrino Oscillations in NOvA

M A Acero et al. Phys Rev Lett. .

Abstract

We report a search for neutrino oscillations to sterile neutrinos under a model with three active and one sterile neutrinos (3+1 model). This analysis uses the NOvA detectors exposed to the NuMI beam, running in neutrino mode. The data exposure, 13.6×10^{20} protons on target, doubles that previously analyzed by NOvA, and the analysis is the first to use ν_{μ} charged-current interactions in conjunction with neutral-current interactions. Neutrino samples in the near and far detectors are fitted simultaneously, enabling the search to be carried out over a Δm_{41}^{2} range extending 2 (3) orders of magnitude above (below) 1 eV^{2}. NOvA finds no evidence for active-to-sterile neutrino oscillations under the 3+1 model at 90% confidence level. New limits are reported in multiple regions of parameter space, excluding some regions currently allowed by IceCube at 90% confidence level. We additionally set the most stringent limits for anomalous ν_{τ} appearance for Δm_{41}^{2}≤3 eV^{2}.

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