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1. Constraints on Oscillation Parameters from ν_{e} Appearance and ν_{μ} Disappearance in NOvA

Author

Adamson P, Aliaga L, Ambrose D, Anfimov N, Antoshkin A, Arrieta-Diaz E, Augsten K, Aurisano A, Backhouse C, Baird M, Bambah BA, 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 BC, Chowdhury B, Coan TE, Coelho JAB, Colo M, Cooper J, Corwin L, Cremonesi L, Cronin-Hennessy D, Davies GS, Davies JP, Derwent PF, Dharmapalan R, Ding P, Djurcic Z, Dukes EC, Duyang H, Edayath S, Ehrlich R, Feldman GJ, Frank MJ, Gabrielyan M, Gallagher HR, Germani S, Ghosh T, Giri A, Gomes RA, Goodman MC, Grichine V, Group R, Grover D, Guo B, Habig A, Hartnell J, Hatcher R, Hatzikoutelis A, Heller K, Himmel A, Holin A, Hylen J, Jediny F, Judah M, Kafka GK, Kalra D, Kasahara SMS, Kasetti S, Keloth R, Kolupaeva L, Kotelnikov S, Kourbanis I, Kreymer A, Kumar A, Kurbanov S, Lang K, Lee WM, Lin S, Liu J, Lokajicek M, Lozier J, Luchuk S, Maan K, Magill S, Mann WA, Marshak ML, Matera K, Matveev V, Mendez DP, Messier MD, Meyer H, Miao T, Miller WH, Mishra SR, Mohanta R, Moren A, Mualem L, Muether M, Mufson S, Murphy R, Musser J, Nelson JK, Nichol R, Niner E, Norman A, Nosek T, Oksuzian Y, Olshevskiy A, Olson T, Paley J, Pandey P, Patterson RB, Pawloski G, Pershey D, Petrova O, Petti R, Phan-Budd S, Plunkett RK, Poling R, Potukuchi B, Principato C, Psihas F, Radovic A, Rameika RA, Rebel B, Reed B, Rocco D, Rojas P, Ryabov V, Sachdev K, Sail P, Samoylov O, Sanchez MC, Schroeter R, Sepulveda-Quiroz J, Shanahan P, Sheshukov A, Singh J, Singh P, Singh V, Smolik J, Solomey N, Song E, Sousa A, Soustruznik K, Strait M, Suter L, Talaga RL, Tamsett MC, Tas P, Thayyullathil RB, Thomas J, Tian X, Tognini SC, Tripathi J, Tsaris A, Urheim J, Vahle P, Vasel J, Vinton L, Vold A, Vrba T, Wang B, Wetstein M, Whittington D, Wojcicki SG, Wolcott J, Yadav N, Yang S, Zalesak J, Zamorano B, Zwaska R, Adamson, P, Aliaga, L, Ambrose, D, Anfimov, N, Antoshkin, A, Arrieta-Diaz, E, Augsten, K, Aurisano, A, Backhouse, C, Baird, M, Bambah, B, 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, Chowdhury, B, Coan, T, Coelho, J, Colo, M, Cooper, J, Corwin, L, Cremonesi, L, Cronin-Hennessy, D, Davies, G, Davies, J, Derwent, P, Dharmapalan, R, Ding, P, Djurcic, Z, Dukes, E, Duyang, H, Edayath, S, Ehrlich, R, Feldman, G, Frank, M, Gabrielyan, M, Gallagher, H, Germani, S, Ghosh, T, Giri, A, Gomes, R, Goodman, M, Grichine, V, Group, R, Grover, D, Guo, B, Habig, A, Hartnell, J, Hatcher, R, Hatzikoutelis, A, Heller, K, Himmel, A, Holin, A, Hylen, J, Jediny, F, Judah, M, Kafka, G, Kalra, D, Kasahara, S, Kasetti, S, Keloth, R, Kolupaeva, L, Kotelnikov, S, Kourbanis, I, Kreymer, A, Kumar, A, Kurbanov, S, Lang, K, Lee, W, Lin, S, Liu, J, Lokajicek, M, Lozier, J, Luchuk, S, Maan, K, Magill, S, Mann, W, Marshak, M, Matera, K, Matveev, V, Mendez, D, Messier, M, Meyer, H, Miao, T, Miller, W, Mishra, S, Mohanta, R, Moren, A, Mualem, L, Muether, M, Mufson, S, Murphy, R, Musser, J, Nelson, J, Nichol, R, Niner, E, Norman, A, Nosek, T, Oksuzian, Y, Olshevskiy, A, Olson, T, Paley, J, Pandey, P, Patterson, R, Pawloski, G, Pershey, D, Petrova, O, Petti, R, Phan-Budd, S, Plunkett, R, Poling, R, Potukuchi, B, Principato, C, Psihas, F, Radovic, A, Rameika, R, Rebel, B, Reed, B, Rocco, D, Rojas, P, Ryabov, V, Sachdev, K, Sail, P, Samoylov, O, Sanchez, M, Schroeter, R, Sepulveda-Quiroz, J, Shanahan, P, Sheshukov, A, Singh, J, Singh, P, Singh, V, Smolik, J, Solomey, N, Song, E, Sousa, A, Soustruznik, K, Strait, M, Suter, L, Talaga, R, Tamsett, M, Tas, P, Thayyullathil, R, Thomas, J, Tian, X, Tognini, S, Tripathi, J, Tsaris, A, Urheim, J, Vahle, P, Vasel, J, Vinton, L, Vold, A, Vrba, T, Wang, B, Wetstein, M, Whittington, D, Wojcicki, S, Wolcott, J, Yadav, N, Yang, S, Zalesak, J, Zamorano, B, and Zwaska, R

Subjects
NOvA, neutrino oscillation
Abstract

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}.

Published
2017

2. Measurement of the Neutrino Mixing Angle θ_{23} in NOvA

Author

A. Bolshakova, J. Smolik, M. C. Tamsett, N. Solomey, R. Murphy, A. Himmel, K. Bays, E. C. Dukes, L. Mualem, R. Keloth, A. Hatzikoutelis, W. M. Lee, P. Singh, Simon J. Bending, Milos Lokajicek, Petr Tas, Gavin Davies, R. J. Nichol, O. Samoylov, M. D. Messier, J. Davies, H. R. Gallagher, P. Ding, M. Colo, J. Urheim, L. Aliaga, H. Meyer, H. Duyang, E. Arrieta-Diaz, C. Bromberg, F. Jediny, J. Cooper, P. Shanahan, A. K. Giri, Simon Lin, N. Yadav, X. Tian, P. Rojas, D. P. Méndez, M. Muether, Borun D. Chowdhury, R. Ehrlich, E. Catano-Mur, R. Schroeter, D. Grover, J. M. Paley, M. C. Sanchez, S. C. Tognini, A. Holin, Alec Habig, R. B. Patterson, J. Zalesak, O. Petrova, A. Aurisano, S Kotelnikov, R. Zwaska, R. A. Rameika, S. Yang, G. K. Kafka, S. R. Mishra, Shantanu Desai, D. Cronin-Hennessy, J. Wolcott, Vipin Bhatnagar, L. Cremonesi, A. Radovic, M. Baird, A. Sheshukov, I. Kourbanis, J. A. Musser, J. K. Nelson, B. Reed, J. Tripathi, T. Nosek, G. J. Feldman, T. Olson, Brajesh C Choudhary, K. Matera, P. F. Derwent, Stanislav Luchuk, Bindu A. Bambah, M. Judah, P. Vahle, Pooja Pandey, W. A. Mann, G. Brunetti, V. A. Matveev, Bo Wang, T. Blackburn, S. Germani, Jasvinder A. Singh, R. L. Talaga, D. Pershey, B. Bhuyan, V. Bychkov, D. J. Ambrose, V. A. Ryabov, K. Soustruznik, Warner A. Miller, N. J. Buchanan, M. J. Frank, M. Campbell, V. Singh, Stanley G. Wojcicki, S. Edayath, D. Kalra, K. Sachdev, J.A. Sepulveda-Quiroz, Matthew L Strait, C. Principato, D. Rocco, A. Moren, V Grichine, L. Suter, Anatoly Butkevich, J. Hylen, R. H. Bernstein, T. Ghosh, D. Whittington, B. Behera, A. Vold, R. Poling, Ashok Kumar, E. Song, L. Corwin, A. Tsaris, M. C. Goodman, J. Hartnell, Jian-Guo Bian, Gregory J Pawloski, Joao A B Coelho, Juergen Thomas, J. Vasel, R. K. Plunkett, Zelimir Djurcic, E. Niner, M. Y. Gabrielyan, B. V.K.S. Potukuchi, J. Brown, R. Hatcher, L. Kolupaeva, R. B. Thayyullathil, A. E. Kreymer, Fernanda Psihas, M. Wetstein, J. B. Liu, Rukmani Mohanta, Marvin L Marshak, Alexander Olshevskiy, J. Lozier, Andrew Norman, B. Zamorano, B. Guo, Ken Heller, A. Antoshkin, P. Sail, S. Phan-Budd, A. Sousa, B. Rebel, Ranjan Dharmapalan, C. Backhouse, S. Kurbanov, S. Magill, R. Petti, Karol Lang, Y. Oksuzian, Kamil Augsten, K. Maan, L. Vinton, T. E. Coan, S. Childress, T. Miao, S. Mufson, S. P. Kasetti, R. A. Gomes, P. Adamson, Nikolay Anfimov, S. M. S. Kasahara, T. Vrba, Adamson, P, Aliaga, L, Ambrose, D, Anfimov, N, Antoshkin, A, Arrieta-Diaz, E, Augsten, K, Aurisano, A, Backhouse, C, Baird, M, Bambah, B, 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, Chowdhury, B, Coan, T, Coelho, J, Colo, M, Cooper, J, Corwin, L, Cremonesi, L, Cronin-Hennessy, D, Davies, G, Davies, J, Derwent, P, Desai, S, Dharmapalan, R, Ding, P, Djurcic, Z, Dukes, E, Duyang, H, Edayath, S, Ehrlich, R, Feldman, G, Frank, M, Gabrielyan, M, Gallagher, H, Germani, S, Ghosh, T, Giri, A, Gomes, R, Goodman, M, Grichine, V, Group, R, Grover, D, Guo, B, Habig, A, Hartnell, J, Hatcher, R, Hatzikoutelis, A, Heller, K, Himmel, A, Holin, A, Hylen, J, Jediny, F, Judah, M, Kafka, G, Kalra, D, Kasahara, S, Kasetti, S, Keloth, R, Kolupaeva, L, Kotelnikov, S, Kourbanis, I, Kreymer, A, Kumar, A, Kurbanov, S, Lang, K, Lee, W, Lin, S, Liu, J, Lokajicek, M, Lozier, J, Luchuk, S, Maan, K, Magill, S, Mann, W, Marshak, M, Matera, K, Matveev, V, Mendez, D, Messier, M, Meyer, H, Miao, T, Miller, W, Mishra, S, Mohanta, R, Moren, A, Mualem, L, Muether, M, Mufson, S, Murphy, R, Musser, J, Nelson, J, Nichol, R, Niner, E, Norman, A, Nosek, T, Oksuzian, Y, Olshevskiy, A, Olson, T, Paley, J, Pandey, P, Patterson, R, Pawloski, G, Pershey, D, Petrova, O, Petti, R, Phan-Budd, S, Plunkett, R, Poling, R, Potukuchi, B, Principato, C, Psihas, F, Radovic, A, Rameika, R, Rebel, B, Reed, B, Rocco, D, Rojas, P, Ryabov, V, Sachdev, K, Sail, P, Samoylov, O, Sanchez, M, Schroeter, R, Sepulveda-Quiroz, J, Shanahan, P, Sheshukov, A, Singh, J, Singh, P, Singh, V, Smolik, J, Solomey, N, Song, E, Sousa, A, Soustruznik, K, Strait, M, Suter, L, Talaga, R, Tamsett, M, Tas, P, Thayyullathil, R, Thomas, J, Tian, X, Tognini, S, Tripathi, J, Tsaris, A, Urheim, J, Vahle, P, Vasel, J, Vinton, L, Vold, A, Vrba, T, Wang, B, Wetstein, M, Whittington, D, Wojcicki, S, Wolcott, J, Yadav, N, Yang, S, Zalesak, J, Zamorano, B, and Zwaska, R

Subjects
neutrino oscillation, neutrino mixing angle, NOvA, 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, 010306 general physics, Mass hierarchy, 01 natural sciences, Humanities, QC, High Energy Physics - Experiment
Abstract

This Letter reports new results on muon neutrino disappearance from NOvA, using a 14 kton detector equivalent exposure of $6.05\times10^{20}$ protons-on-target from the NuMI beam at the Fermi National Accelerator Laboratory. The measurement probes the muon-tau symmetry hypothesis that requires maximal mixing ($\theta_{23} = \pi/4$). Assuming the normal mass hierarchy, we find $\Delta m^2 = (2.67 \pm 0.11)\times 10^{-3}$ eV$^2$ and $\sin^2 \theta_{23}$ at the two statistically degenerate values $0.404^{+0.030}_{-0.022}$ and $0.624^{+0.022}_{-0.030}$, both at the 68% confidence level. Our data disfavor the maximal mixing scenario with 2.6 $\sigma$ significance., Comment: 7 pages, 3 figures

Published
2017

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

Author

Acero MA, 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 BA, Bashar S, Bays K, Bending S, Bernstein R, Bhatnagar V, Bhuyan B, Bian J, Blackburn T, Blair J, Booth AC, Bour P, Bromberg C, Buchanan N, Butkevich A, Calvez S, Campbell M, Carroll TJ, Catano-Mur E, Cedeno A, Childress S, Choudhary BC, Chowdhury B, Coan TE, Colo M, Cooper J, Corwin L, Cremonesi L, Davies GS, Derwent PF, Ding P, Djurcic Z, Doyle D, Dukes EC, Duyang H, Edayath S, Ehrlich R, Elkins M, Feldman GJ, Filip P, Flanagan W, Frank MJ, Gallagher HR, Gandrajula R, Gao F, Germani S, Giri A, Gomes RA, Goodman MC, 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 DM, Keloth R, Klimov O, Koerner LW, Kolupaeva L, Kotelnikov S, Kourbanis I, Kreymer A, Kulenberg C, Kumar A, Kuruppu CD, Kus V, Lackey T, Lang K, Lin S, Lokajicek M, Lozier J, Luchuk S, Maan K, Magill S, Mann WA, Marshak ML, Martinez-Casales M, Matveev V, Méndez DP, Messier MD, Meyer H, Miao T, Miller WH, Mishra SR, Mislivec A, Mohanta R, Moren A, Mualem L, Muether M, Mufson S, Mulder K, Murphy R, Musser J, Naples D, Nayak N, Nelson JK, Nichol R, Nikseresht G, Niner E, Norman A, Nosek T, Olshevskiy A, Olson T, Paley J, Patterson RB, Pawloski G, Pershey D, Petrova O, Petti R, Phan DD, Plunkett RK, Potukuchi B, Principato C, Psihas F, Radovic A, Raj V, Rameika RA, Rebel B, Rojas P, Ryabov V, Samoylov O, Sanchez MC, Sánchez Falero S, Seong IS, 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 RL, Tapia Oregui B, Tas P, Thayyullathil RB, 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 TK, Wetstein M, While M, Whittington D, Wojcicki SG, Wolcott J, Yadav N, Yallappa Dombara A, Yonehara K, Yu S, Zadorozhnyy S, Zalesak J, Zamorano B, and Zwaska R

Abstract

The NOvA experiment has seen a 4.4σ signal of ν[over ¯]_{e} appearance in a 2 GeV ν[over ¯]_{μ} beam at a distance of 810 km. Using 12.33×10^{20} protons on target delivered to the Fermilab NuMI neutrino beamline, the experiment recorded 27 ν[over ¯]_{μ}→ν[over ¯]_{e} candidates with a background of 10.3 and 102 ν[over ¯]_{μ}→ν[over ¯]_{μ} candidates. This new antineutrino data are combined with neutrino data to measure the parameters |Δm_{32}^{2}|=2.48_{-0.06}^{+0.11}×10^{-3}  eV^{2}/c^{4} and sin^{2}θ_{23} 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 δ_{CP}=π/2 for the inverted mass hierarchy by more than 3σ and favor the normal neutrino mass hierarchy by 1.9σ and θ_{23} values in the upper octant by 1.6σ.

Published
2019
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4. Measurement of the Neutrino Mixing Angle θ_{23} in NOvA.

Author

Adamson P, Aliaga L, Ambrose D, Anfimov N, Antoshkin A, Arrieta-Diaz E, Augsten K, Aurisano A, Backhouse C, Baird M, Bambah BA, 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 BC, Chowdhury B, Coan TE, Coelho JAB, Colo M, Cooper J, Corwin L, Cremonesi L, Cronin-Hennessy D, Davies GS, Davies JP, Derwent PF, Desai S, Dharmapalan R, Ding P, Djurcic Z, Dukes EC, Duyang H, Edayath S, Ehrlich R, Feldman GJ, Frank MJ, Gabrielyan M, Gallagher HR, Germani S, Ghosh T, Giri A, Gomes RA, Goodman MC, Grichine V, Group R, Grover D, Guo B, Habig A, Hartnell J, Hatcher R, Hatzikoutelis A, Heller K, Himmel A, Holin A, Hylen J, Jediny F, Judah M, Kafka GK, Kalra D, Kasahara SMS, Kasetti S, Keloth R, Kolupaeva L, Kotelnikov S, Kourbanis I, Kreymer A, Kumar A, Kurbanov S, Lang K, Lee WM, Lin S, Liu J, Lokajicek M, Lozier J, Luchuk S, Maan K, Magill S, Mann WA, Marshak ML, Matera K, Matveev V, Méndez DP, Messier MD, Meyer H, Miao T, Miller WH, Mishra SR, Mohanta R, Moren A, Mualem L, Muether M, Mufson S, Murphy R, Musser J, Nelson JK, Nichol R, Niner E, Norman A, Nosek T, Oksuzian Y, Olshevskiy A, Olson T, Paley J, Pandey P, Patterson RB, Pawloski G, Pershey D, Petrova O, Petti R, Phan-Budd S, Plunkett RK, Poling R, Potukuchi B, Principato C, Psihas F, Radovic A, Rameika RA, Rebel B, Reed B, Rocco D, Rojas P, Ryabov V, Sachdev K, Sail P, Samoylov O, Sanchez MC, Schroeter R, Sepulveda-Quiroz J, Shanahan P, Sheshukov A, Singh J, Singh J, Singh P, Singh V, Smolik J, Solomey N, Song E, Sousa A, Soustruznik K, Strait M, Suter L, Talaga RL, Tamsett MC, Tas P, Thayyullathil RB, Thomas J, Tian X, Tognini SC, Tripathi J, Tsaris A, Urheim J, Vahle P, Vasel J, Vinton L, Vold A, Vrba T, Wang B, Wetstein M, Whittington D, Wojcicki SG, Wolcott J, Yadav N, Yang S, Zalesak J, Zamorano B, and Zwaska R

Abstract

This Letter reports new results on muon neutrino disappearance from NOvA, using a 14 kton detector equivalent exposure of 6.05×10^{20} protons on target from the NuMI beam at the Fermi National Accelerator Laboratory. The measurement probes the muon-tau symmetry hypothesis that requires maximal θ_{23} mixing (θ_{23}=π/4). Assuming the normal mass hierarchy, we find Δm_{32}^{2}=(2.67±0.11)×10^{-3}  eV^{2} and sin^{2}θ_{23} at the two statistically degenerate values 0.404_{-0.022}^{+0.030} and 0.624_{-0.030}^{+0.022}, both at the 68% confidence level. Our data disfavor the maximal mixing scenario with 2.6σ significance.

Published
2017
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