1. New constraints on oscillation parameters from $\nu_e$ appearance and $\nu_\mu$ disappearance in the NOvA experiment
- Author
-
Acero, M. A., Adamson, P., Alion, L. Aliaga T., Allakhverdian, V., Antoshkin, N. Anfimov A., Arrieta-Diaz, E., Back, A. Aurisano A., Backhouse, C., Balashov, M. Baird N., Bambah, B. A., Behera, K. Bays B., Bending, S., Bhatnagar, R. Bernstein V., Bhuyan, B., Blackburn, J. Bian T., Blair, J., Bour, A. Bolshakova P., Bromberg, C., Buchanan, J. Brown N., Butkevich, A., Campbell, V. Bychkov M., Carroll, T. J., Cedeno, E. Catano-Mur A., Childress, S., Chowdhury, B. C. Choudhary B., Coan, T. E., Cooper, M. Colo J., Corwin, L., Cronin-Hennessy, L. Cremonesi D., Davies, G. S., De Rijck, J. P. Davies S., Derwent, P. F., Ding, R. Dharmapalan P., Djurcic, Z., Dung, E. C. Dukes P., Duyang, H., Ehrlich, S. Edayath R., Feldman, G. J., Gallagher, M. J. Frank H. R., Gandrajula, R., Germani, F. Gao S., Giri, A., Goodman, R. A. Gomes M. C., Grichine, V., Group, M. Groh R., Grover, D., Habig, B. Guo A., Hakl, F., Hatcher, J. Hartnell R., Hatzikoutelis, A., Himmel, K. Heller A., Holin, A., Huang, B. Howard J., Hylen, J., Judah, F. Jediny M., Kakorin, I., Kaplan, D. Kalra D. M., Keloth, R., Koerner, O. Klimov L. W., Kolupaeva, L., Kourbanis, S. Kotelnikov I., Kreymer, A., Kumar, Ch. Kulenberg A., Kuruppu, C., Lackey, V. Kus T., Lang, K., Lokajicek, S. Lin M., Lozier, J., Maan, S. Luchuk K., Magill, S., Marshak, W. A. Mann M. L., Matveev, V., Messier, D. P. Méndez M. D., Meyer, H., Miller, T. Miao W. H., Mishra, S. R., Mohanta, A. Mislivec R., Moren, A., Muether, L. Mualem M., Mufson, S., Musser, R. Murphy J., Naples, D., Nelson, N. Nayak J. K., Nichol, R., Norman, E. Niner A., Nosek, T., Olshevskiy, Y. Oksuzian A., Olson, T., Patterson, J. Paley R. B., Pawloski, G., Petrova, D. Pershey O., Petti, R., Plunkett, S. Phan-Budd R. K., Potukuchi, B., Psihas, C. Principato F., Radovic, A., Rebel, R. A. Rameika B., Rojas, P., Sachdev, V. Ryabov K., Samoylov, O., Sepulveda-Quiroz, M. C. Sanchez J., Shanahan, P., Singh, A. Sheshukov P., Singh, V., Smolik, E. Smith J., Snopok, P., Song, N. Solomey E., Sousa, A., Strait, K. Soustruznik M., Suter, L., Tas, R. L. Talaga P., Thayyullathil, R. B., Tiras, J. Thomas E., Tognini, S. C., Tripathi, D. Torbunov J., Tsaris, A., Urheim, Y. Torun J., Vahle, P., Vinton, J. Vasel L., Vokac, P., Vrba, A. Vold T., Wang, B., Wetstein, T. K. Warburton M., Whittington, D., Wolcott, S. G. Wojcicki J., Yang, S., Zalesak, S. Yu J., Zamorano, B., and Zwaska, R.
- Subjects
High Energy Physics - Experiment - Abstract
We present updated results from the NOvA experiment for $\nu_\mu\rightarrow\nu_\mu$ and $\nu_\mu\rightarrow\nu_e$ oscillations from an exposure of $8.85\times10^{20}$ protons on target, which represents an increase of 46% compared to our previous publication. The results utilize significant improvements in both the simulations and analysis of the data. A joint fit to the data for $\nu_\mu$ disappearance and $\nu_e$ appearance gives the best fit point as normal mass hierarchy, $\Delta m^2_{32} = 2.44\times 10^{-3}{{\rm eV}^2}/c^4$, $\sin^2\theta_{23} = 0.56$, and $\delta_{CP} = 1.21\pi$. The 68.3% confidence intervals in the normal mass hierarchy are $\Delta m^2_{32} \in [2.37,2.52]\times 10^{-3}{{\rm eV}^2}/c^4$, $\sin^2\theta_{23} \in [0.43,0.51] \cup [0.52,0.60]$, and $\delta_{CP} \in [0,0.12\pi] \cup [0.91\pi,2\pi]$. The inverted mass hierarchy is disfavored at the 95% confidence level for all choices of the other oscillation parameters.
- Published
- 2018
- Full Text
- View/download PDF