/ hep-ex arXiv:1701.05891


Measurement of the neutrino mixing angle $\theta_{23}$ in NOvA


Adamson, P. (Fermilab) ; Allakhverdian, V. (Dubna, JINR) ; Ambrose, D. (Minnesota U.) ; Anfimov, N. (Dubna, JINR) ; Antoshkin, A. (Dubna, JINR) ; Arrieta-Diaz, E. (Southern Methodist U.) ; Augsten, K. (Prague, Tech. U.) ; Aurisano, A. (Cincinnati U.) ; Backhouse, C. (Caltech) ; Baird, M. (Indiana U.) ; Bambah, B.A. (Osmania U.) ; Bays, K. (Caltech) ; Behera, B. (Indian Inst. Tech., Hyderabad) ; Bending, S. (University Coll. London) ; Bernstein, R. (Fermilab) ; Bhatnagar, V. (Panjab U.) ; Bhuyan, B. (IIT, Roorkee) ; Bian, J. (Minnesota U.) ; Blackburn, T. (Sussex U., Astron. Ctr.) ; Bolshakova, A. (Dubna, JINR) ; Bromberg, C. (Michigan State U.) ; Brown, J. (Minnesota U.) ; Brunetti, G. (Fermilab) ; Buchanan, N. (Colorado State U.) ; Butkevich, A. (Moscow, INR) ; Bychkov, V. (Minnesota U.) ; Campbell, M. (University Coll. London) ; Catano-Mur, E. (Iowa State U.) ; Childress, S. (Fermilab) ; Choudhary, B.C. (Delhi U.) ; Chowdhury, B. (South Carolina U.) ; Coan, T.E. (Southern Methodist U.) ; Coelho, J.A.B. (Tufts U.) ; Colo, M. (William-Mary Coll.) ; Cooper, J. (Fermilab) ; Corwin, L. (South Dakota Sch. Mines Tech.) ; Cremonesi, L. (University Coll. London) ; Cronin-Hennessy, D. (Minnesota U.) ; Davies, G.S. (Indiana U.) ; Davies, J.P. (Sussex U., Astron. Ctr.) ; Derwent, P.F. (Fermilab) ; Desai, S. (Minnesota U.) ; Dharmapalan, R. (Argonne, HEP) ; Ding, P. (Fermilab) ; Djurcic, Z. (Argonne, HEP) ; Dukes, E.C. (Virginia U.) ; Duyang, H. (South Carolina U.) ; Edayath, S. (Cochin U.) ; Ehrlich, R. (Virginia U.) ; Feldman, G.J. (Harvard U.) ; Gabrielyan, M. (Minnesota U.) ; Gallagher, H.R. (Tufts U.) ; Germani, S. (University Coll. London) ; Ghosh, T. (Goias U.) ; Giri, A. (Indian Inst. Tech., Hyderabad) ; Gomes, R.A. (Goias U.) ; Goodman, M.C. (Argonne, HEP) ; Grichine, V. (Lebedev Inst.) ; Group, R. (Virginia U.) ; Grover, D. (Banaras Hindu U.) ; Guo, B. (South Carolina U.) ; Habig, A. (Minnesota U., Duluth) ; Hartnell, J. (Sussex U., Astron. Ctr.) ; Hatcher, R. (Fermilab) ; Hatzikoutelis, A. (Tennessee U.) ; Heller, K. (Minnesota U.) ; Himmel, A. (Fermilab) ; Holin, A. (University Coll. London) ; Hylen, J. (Fermilab) ; Jediny, F. (Prague, Tech. U.) ; Judah, M. (Colorado State U.) ; Kafka, G.K. (Harvard U.) ; Kakorin, I. (Dubna, JINR) ; Kalra, D. (Panjab U.) ; Kasahara, S.M.S. (Minnesota U.) ; Kasetti, S. (Osmania U.) ; Keloth, R. (Cochin U.) ; Kolupaeva, L. (Dubna, JINR) ; Kotelnikov, S. (Lebedev Inst.) ; Kourbanis, I. (Fermilab) ; Kreymer, A. (Fermilab) ; Kumar, A. (Panjab U.) ; Kurbanov, S. (Virginia U.) ; Lang, K. (Texas U.) ; Lee, W.M. (Fermilab) ; Lin, S. (Colorado State U.) ; Liu, J. (William-Mary Coll.) ; Lokajicek, M. (Prague, Inst. Plasma Phys.) ; Lozier, J. (Caltech) ; Luchuk, S. (Moscow, INR) ; Maan, K. (Panjab U.) ; Magill, S. (Argonne, HEP) ; Mann, W.A. (Tufts U.) ; Marshak, M.L. (Minnesota U.) ; Matera, K. (Fermilab) ; Matveev, V. (Moscow, INR) ; Méndez, D.P. (Sussex U., Astron. Ctr.) ; Messier, M.D. (Indiana U.) ; Meyer, H. (Wichita State U.) ; Miao, T. (Fermilab) ; Miller, W.H. (Minnesota U.) ; Mishra, S.R. (South Carolina U.) ; Mohanta, R. (Osmania U.) ; Mualem, L. (Caltech) ; Muether, M. (Wichita State U.) ; Mufson, S. (Indiana U.) ; Murphy, R. (Indiana U.) ; Musser, J. (Indiana U.) ; Nelson, J.K. (William-Mary Coll.) ; Nichol, R. (University Coll. London) ; Niner, E. (Fermilab) ; Norman, A. (Fermilab) ; Nosek, T. (Charles U.) ; Oksuzian, Y. (Virginia U.) ; Olshevskiy, A. (Dubna, JINR) ; Olson, T. (Tufts U.) ; Paley, J. (Fermilab) ; Pandey, P. (Delhi U.) ; Patterson, R.B. (Caltech) ; Pawloski, G. (Minnesota U.) ; Pershey, D. (Caltech) ; Petrova, O. (Dubna, JINR) ; Petti, R. (South Carolina U.) ; Phan-Budd, S. (Winona State U.) ; Plunkett, R.K. (Fermilab) ; Poling, R. (Minnesota U.) ; Potukuchi, B. (Jammu U.) ; Principato, C. (Virginia U.) ; Psihas, F. (Indiana U.) ; Radovic, A. (William-Mary Coll.) ; Rameika, R.A. (Fermilab) ; Rebel, B. (Fermilab) ; Reed, B. (South Dakota Sch. Mines Tech.) ; Rocco, D. (Minnesota U.) ; Rojas, P. (Colorado State U.) ; Ryabov, V. (Lebedev Inst.) ; Sachdev, K. (Minnesota U.) ; Sail, P. (Texas U.) ; Samoylov, O. (Dubna, JINR) ; Sanchez, M.C. (Iowa State U.) ; Schroeter, R. (Harvard U.) ; Sepulveda-Quiroz, J. (Iowa State U.) ; Shanahan, P. (Fermilab) ; Sheshukov, A. (Dubna, JINR) ; Singh, J. (Panjab U.) ; Singh, J. (Jammu U.) ; Singh, P. (Delhi U.) ; Singh, V. (Banaras Hindu U.) ; Smolik, J. (Prague, Tech. U.) ; Solomey, N. (Wichita State U.) ; Song, E. (Virginia U.) ; Sousa, A. (Cincinnati U.) ; Soustruznik, K. (Charles U.) ; Strait, M. (Minnesota U.) ; Suter, L. (Fermilab) ; Talaga, R.L. (Argonne, HEP) ; Tamsett, M.C. (Sussex U., Astron. Ctr.) ; Tas, P. (Charles U.) ; Thayyullathil, R.B. (Cochin U.) ; Thomas, J. (University Coll. London) ; Tian, X. (South Carolina U.) ; Tognini, S.C. (Goias U.) ; Tripathi, J. (Panjab U.) ; Urheim, J. (Indiana U.) ; Vahle, P. (William-Mary Coll.) ; Vasel, J. (Indiana U.) ; Vinton, L. (Sussex U., Astron. Ctr.) ; Vold, A. (Minnesota U.) ; Vrba, T. (Prague, Tech. U.) ; Wang, B. (Southern Methodist U.) ; Wetstein, M. (Iowa State U.) ; Whittington, D. (Indiana U.) ; Wojcicki, S.G. (Stanford U., Phys. Dept.) ; Wolcott, J. (Tufts U.) ; Yadav, N. (IIT, Roorkee) ; Yang, S. (Cincinnati U.) ; Zalesak, J. (Prague, Inst. Plasma Phys.) ; Zamorano, B. (Sussex U., Astron. Ctr.) ; Zwaska, R. (Fermilab)

Published in: Phys.Rev.Lett.
Pages: 7

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.

Web-Page: http://inspirehep.net/record/1510066/files/contour.png; http://inspirehep.net/record/1510066/files/ND3plots.png; http://inspirehep.net/record/1510066/files/FDspectrum.png; http://inspirehep.net/record/1510066/files/arXiv:1701.05891.pdf


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