First Measurement of Electron Neutrino Appearance in NOvA

Autor: Adamson, P. Ader, C. Andrews, M. Anfimov, N. Anghel, I. and Arms, K. Arrieta-Diaz, E. Aurisano, A. Ayres, D. S. and Backhouse, C. Baird, M. Bambah, B. A. Bays, K. and Bernstein, R. Betancourt, M. Bhatnagar, V. Bhuyan, B. and Bian, J. Biery, K. Blackburn, T. Bocean, V. Bogert, D. and Bolshakova, A. Bowden, M. Bower, C. Broemmelsiek, D. and Bromberg, C. Brunetti, G. Bu, X. Butkevich, A. Capista, D. Catano-Mur, E. Chase, T. R. Childress, S. Choudhary, B. C. Chowdhury, B. Coan, T. E. Coelho, J. A. B. Colo, M. Cooper, J. Corwin, L. Cronin-Hennessy, D. Cunningham, A. Davies, G. S. Davies, J. P. Del Tutto, M. Derwent, P. F. Deepthi, K. N. Demuth, D. Desai, S. Deuerling, G. and Devan, A. Dey, J. Dharmapalan, R. Ding, P. Dixon, S. and Djurcic, Z. Dukes, E. C. Duyang, H. Ehrlich, R. Feldman, G. J. Felt, N. Fenyves, E. J. Flumerfelt, E. Foulkes, S. and Frank, M. J. Freeman, W. Gabrielyan, M. Gallagher, H. R. and Gebhard, M. Ghosh, T. Gilbert, W. Giri, A. and Goadhouse, S. Gomes, R. A. Goodenough, L. Goodman, M. C. and Grichine, V. Grossman, N. Group, R. Grudzinski, J. and Guarino, V. Guo, B. Habig, A. Handler, T. Hartnell, J. and Hatcher, R. Hatzikoutelis, A. Heller, K. Howcroft, C. and Huang, J. Huang, X. Hylen, J. Ishitsuka, M. Jediny, F. Jensen, C. Jensen, D. Johnson, C. Jostlein, H. and Kafka, G. K. Kamyshkov, Y. Kasahara, S. M. S. Kasetti, S. and Kephart, K. Koizumi, G. Kotelnikov, S. Kourbanis, I. and Krahn, Z. Kravtsov, V. Kreymer, A. Kulenberg, Ch. Kumar, A. Kutnink, T. Kwarciancy, R. Kwong, J. Lang, K. and Lee, A. Lee, W. M. Lee, K. Lein, S. Liu, J. and Lokajicek, M. Lozier, J. Lu, Q. Lucas, P. Luchuk, S. and Lukens, P. Lukhanin, G. Magill, S. Maan, K. Mann, W. A. and Marshak, M. L. Martens, M. Martincik, J. Mason, P. and Matera, K. Mathis, M. Matveev, V. Mayer, N. McCluskey, E. Mehdiyev, R. Merritt, H. Messier, M. D. Meyer, H. and Miao, T. Michael, D. Mikheyev, S. P. Miller, W. H. and Mishra, S. R. Mohanta, R. Moren, A. Mualem, L. Muether, M. Mufson, S. Musser, J. Newman, H. B. Nelson, J. K. and Niner, E. Norman, A. Nowak, J. Oksuzian, Y. Olshevskiy, A. Oliver, J. Olson, T. Paley, J. Pandey, P. Para, A. Patterson, R. B. Pawloski, G. Pearson, N. Perevalov, D. Pershey, D. Peterson, E. Petti, R. Phan-Budd, S. and Piccoli, L. Pla-Dalmau, A. Plunkett, R. K. Poling, R. and Potukuchi, B. Psihas, F. Pushka, D. Qiu, X. Raddatz, N. and Radovic, A. Rameika, R. A. Ray, R. Rebel, B. and Rechenmacher, R. Reed, B. Reilly, R. Rocco, D. Rodkin, D. Ruddick, K. Rusack, R. Ryabov, V. Sachdev, K. and Sahijpal, S. Sahoo, H. Samoylov, O. Sanchez, M. C. and Saoulidou, N. Schlabach, P. Schneps, J. Schroeter, R. and Sepulveda-Quiroz, J. Shanahan, P. Sherwood, B. Sheshukov, A. and Singh, J. Singh, V. Smith, A. Smith, D. Smolik, J. and Solomey, N. Sotnikov, A. Sousa, A. Soustruznik, K. and Stenkin, Y. Strait, M. Suter, L. Talaga, R. L. Tamsett, M. C. Tariq, S. Tas, P. Tesarek, R. J. Thayyullathil, R. B. Thomsen, K. Tian, X. Tognini, S. C. Toner, R. and Trevor, J. Tzanakos, G. Urheim, J. Vahle, P. Valerio, L. and Vinton, L. Vrba, T. Waldron, A. V. Wang, B. Wang, Z. and Weber, A. Wehmann, A. Whittington, D. Wilcer, N. and Wildberger, R. Wildman, D. Williams, K. Wojcicki, S. G. and Wood, K. Xiao, M. Xin, T. Yadav, N. Yang, S. and Zadorozhnyy, S. Zalesak, J. Zamorano, B. Zhao, A. and Zirnstein, J. Zwaska, R.
Jazyk: angličtina
Rok vydání: 2016
Popis: We report results from the first search for nu(mu) -> nu(e) transitions by the NOvA experiment. In an exposure equivalent to 2.74 x 10(20) protons on target in the upgraded NuMI beam at Fermilab, we observe 6 events in the Far Detector, compared to a background expectation of 0.99 +/- 0.11 (syst) events based on the Near Detector measurement. A secondary analysis observes 11 events with a background of 1.07 +/- 0.14 (syst). The 3.3 sigma excess of events observed in the primary analysis disfavors 0.1 pi < delta(CP) < 0.5 pi in the inverted mass hierarchy at the 90% C.L.
Databáze: OpenAIRE