First measurement of muon-neutrino disappearance in NOvA

P. Adamson, C. Ader, M. Andrews, N. Anfimov, I. Anghel, K. Arms, E. Arrieta-Diaz, A. Aurisano, D. S. Ayres, C. Backhouse, M. Baird, B. A. Bambah, K. Bays, R. Bernstein, M. Betancourt, V. Bhatnagar, B. Bhuyan, J. Bian, K. Biery, T. BlackburnV. Bocean, D. Bogert, A. Bolshakova, M. Bowden, C. Bower, D. Broemmelsiek, C. Bromberg, G. Brunetti, X. Bu, A. Butkevich, D. Capista, E. Catano-Mur, T. R. Chase, S. Childress, B. C. Choudhary, B. Chowdhury, T. E. Coan, J. A B Coelho, M. Colo, J. Cooper, L. Corwin, D. Cronin-Hennessy, A. Cunningham, G. S. Davies, J. P. Davies, M. Del Tutto, P. F. Derwent, K. N. Deepthi, D. Demuth, S. Desai, G. Deuerling, A. Devan, J. Dey, R. Dharmapalan, P. Ding, S. Dixon, Z. Djurcic, E. C. Dukes, H. Duyang, R. Ehrlich, G. J. Feldman, N. Felt, E. J. Fenyves, E. Flumerfelt, S. Foulkes, M. J. Frank, W. Freeman, M. Gabrielyan, H. R. Gallagher, M. Gebhard, T. Ghosh, W. Gilbert, A. Giri, S. Goadhouse, R. A. Gomes, L. Goodenough, M. C. Goodman, V. Grichine, N. Grossman, R. Group, J. Grudzinski, V. Guarino, B. Guo, A. Habig, T. Handler, J. Hartnell, R. Hatcher, A. Hatzikoutelis, K. Heller, C. Howcroft, J. Huang, X. Huang, J. Hylen, M. Ishitsuka, F. Jediny, C. Jensen, D. Jensen, C. Johnson, H. Jostlein, G. K. Kafka, Y. Kamyshkov, S. M S Kasahara, S. Kasetti, K. Kephart, G. Koizumi, S. Kotelnikov, I. Kourbanis, Z. Krahn, V. Kravtsov, A. Kreymer, Ch Kulenberg, A. Kumar, T. Kutnink, R. Kwarciancy, J. Kwong, K. Lang, A. Lee, W. M. Lee, K. Lee, S. Lein, J. Liu, M. Lokajicek, J. Lozier, Q. Lu, P. Lucas, S. Luchuk, P. Lukens, G. Lukhanin, S. Magill, K. Maan, W. A. Mann, M. L. Marshak, M. Martens, J. Martincik, P. Mason, K. Matera, M. Mathis, V. Matveev, N. Mayer, E. McCluskey, R. Mehdiyev, H. Merritt, M. D. Messier, H. Meyer, T. Miao, D. Michael, S. P. Mikheyev, W. H. Miller, S. R. Mishra, R. Mohanta, A. Moren, L. Mualem, M. Muether, S. Mufson, J. Musser, H. B. Newman, J. K. Nelson, E. Niner, A. Norman, J. Nowak, Y. Oksuzian, A. Olshevskiy, J. Oliver, T. Olson, J. Paley, P. Pandey, A. Para, R. B. Patterson, G. Pawloski, N. Pearson, D. Perevalov, D. Pershey, E. Peterson, R. Petti, S. Phan-Budd, L. Piccoli, A. Pla-Dalmau, R. K. Plunkett, R. Poling, B. Potukuchi, F. Psihas, D. Pushka, X. Qiu, N. Raddatz, A. Radovic, R. A. Rameika, R. Ray, B. Rebel, R. Rechenmacher, B. Reed, R. Reilly, D. Rocco, D. Rodkin, K. Ruddick, R. Rusack, V. Ryabov, K. Sachdev, S. Sahijpal, H. Sahoo, O. Samoylov, M. C. Sanchez, N. Saoulidou, P. Schlabach, J. Schneps, R. Schroeter, J. Sepulveda-Quiroz, P. Shanahan, B. Sherwood, A. Sheshukov, J. Singh, V. Singh, A. Smith, D. Smith, J. Smolik, N. Solomey, A. Sotnikov, A. Sousa, K. Soustruznik, Y. Stenkin, M. Strait, L. Suter, R. L. Talaga, M. C. Tamsett, S. Tariq, P. Tas, R. J. Tesarek, R. B. Thayyullathil, K. Thomsen, X. Tian, S. C. Tognini, R. Toner, J. Trevor, G. Tzanakos, J. Urheim, P. Vahle, L. Valerio, L. Vinton, T. Vrba, A. V. Waldron, B. Wang, Z. Wang, A. Weber, A. Wehmann, D. Whittington, N. Wilcer, R. Wildberger, D. Wildman, K. Williams, S. G. Wojcicki, K. Wood, M. Xiao, T. Xin, N. Yadav, S. Yang, S. Zadorozhnyy, J. Zalesak, B. Zamorano, A. Zhao, J. Zirnstein, R. Zwaska

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Abstract

This paper reports the first measurement using the NOvA detectors of νμ disappearance in a νμ beam. The analysis uses a 14 kton-equivalent exposure of 2.74×1020 protons-on-target from the Fermilab NuMI beam. Assuming the normal neutrino mass hierarchy, we measure Δm322=(2.52-0.18+0.20)×10-3 eV2 and sin2θ23 in the range 0.38-0.65, both at the 68% confidence level, with two statistically degenerate best-fit points at sin2θ23=0.43 and 0.60. Results for the inverted mass hierarchy are also presented.

Original languageEnglish (US)
Article number051104
JournalPhysical Review D
Volume93
Issue number5
DOIs
StatePublished - Mar 25 2016

Bibliographical note

Funding Information:
This work was supported by the U.S. Department of Energy (DOE); the U.S. National Science Foundation; the Department of Science and Technology, India; the European Research Council; the MSMT CR, 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 of the University of Minnesota module assembly facility and NOvA FD 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.

Publisher Copyright:
© 2016 American Physical Society.

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