Measurement of muon antineutrino oscillations with an accelerator-produced off-axis beam

Abe, K. et al. Measurement of muon antineutrino oscillations with an accelerator-produced off-axis beam. Physical Review Letters, 116, 181801. (doi: 10.1103/PhysRevLett.116.181801)

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Abstract

T2K reports its first measurements of the parameters governing the disappearance of ¯ νμ in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic ¯ νμ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the ¯ νμ survival probability is expected to be minimal. Using a data set corresponding to 4.01×1020 protons on target, 34 fully contained μ-like events were observed. The best-fit oscillation parameters are sin2( ¯ θ23)=0.45 and |Δ ¯ m 2 32|=2.51×10−3  eV2 with 68% confidence intervals of 0.38–0.64 and 2.26–2.80×10−3  eV2, respectively. These results are in agreement with existing antineutrino parameter measurements and also with the νμ disappearance parameters measured by T2K.

Item Type:Articles
Additional Information:T2K Collaboration.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Litchfield, Dr Phillip
Authors: Abe, K., Andreopoulos, C., Antonova, M., Aoki, S., Ariga, A., Assylbekov, S., Autiero, D., Barbi, M., Barker, G. J., Barr, G., Bartet-Friburg, P., Batkiewicz, M., Bay, F., Berardi, V., Berkman, S., Bhadra, S., Blondel, A., Bolognesi, S., Bordoni, S., Boyd, S. B., Brailsford, D., Bravar, A., Bronner, C., Buizza Avanzini, M., Calland, R. G., Cao, S., Caravaca Rodríguez, J., Cartwright, S. L., Castillo, R., Catanesi, M. G., Cervera, A., Cherdack, D., Chikuma, N., Christodoulou, G., Clifton, A., Coleman, J., Collazuol, G., Cremonesi, L., Dabrowska, A., De Rosa, G., Dealtry, T., Denner, P. F., Dennis, S. R., Densham, C., Dewhurst, D., Di Lodovico, F., Di Luise, S., Dolan, S., Drapier, O., Duffy, K. E., Dumarchez, J., Dytman, S., Dziewiecki, M., Emery-Schrenk, S., Ereditato, A., Feusels, T., Finch, A. J., Fiorentini, G. A., Friend, M., Fujii, Y., Fukuda, D., Fukuda, Y., Furmanski, A. P., Galymov, V., Garcia, A., Giffin, S. G., Giganti, C., Gizzarelli, F., Gonin, M., Grant, N., Hadley, D. R., Haegel, L., Haigh, M. D., Hamilton, P., Hansen, D., Hara, T., Hartz, M., Hasegawa, T., Hastings, N. C., Hayashino, T., Hayato, Y., Helmer, R. L., Hierholzer, M., Hillairet, A., Himmel, A., Hiraki, T., Hirota, S., Hogan, M., Holeczek, J., Horikawa, S., Hosomi, F., Huang, K., Ichikawa, A. K., Ieki, K., Ikeda, M., Imber, J., Insler, J., Intonti, R. A., Irvine, T. J., Ishida, T., Ishii, T., Iwai, E., Iwamoto, K., Izmaylov, A., Jacob, A., Jamieson, B., Jiang, M., Johnson, S., Jo, J. H., Jonsson, P., Jung, C. K., Kabirnezhad, M., Kaboth, A. C., Kajita, T., Kakuno, H., Kameda, J., Karlen, D., Karpikov, I., Katori, T., Kearns, E., Khabibullin, M., Khotjantsev, A., Kielczewska, D., Kikawa, T., Kim, H., Kim, J., King, S., Kisiel, J., Knight, A., Knox, A., Kobayashi, T., Koch, L., Koga, T., Konaka, A., Kondo, K., Kopylov, A., Kormos, L. L., Korzenev, A., Koshio, Y., Kropp, W., Kudenko, Y., Kurjata, R., Kutter, T., Lagoda, J., Lamont, I., Larkin, E., Laveder, M., Lawe, M., Lazos, M., Lindner, T., Liptak, Z. J., Litchfield, R. P., Li, X., Longhin, A., Lopez, J. P., Ludovici, L., Lu, X., Magaletti, L., Mahn, K., Malek, M., Manly, S., Marino, A. D., Marteau, J., Martin, J. F., Martins, P., Martynenko, S., Maruyama, T., Matveev, V., Mavrokoridis, K., Ma, W. Y., Mazzucato, E., McCarthy, M., McCauley, N., McFarland, K. S., McGrew, C., Mefodiev, A., Mezzetto, M., Mijakowski, P., Minamino, A., Mineev, O., Mine, S., Missert, A., Miura, M., Moriyama, S., Mueller, T. A., Murphy, S., Myslik, J., Nakadaira, T., Nakahata, M., Nakamura, K. G., Nakamura, K., Nakamura, K. D., Nakayama, S., Nakaya, T., Nakayoshi, K., Nantais, C., Nielsen, C., Nirkko, M., Nishikawa, K., Nishimura, Y., Nowak, J., O’Keeffe, H. M., Ohta, R., Okumura, K., Okusawa, T., Oryszczak, W., Oser, S. M., Ovsyannikova, T., Owen, R. A., Oyama, Y., Palladino, V., Palomino, J. L., Paolone, V., Patel, N. D., Pavin, M., Payne, D., Perkin, J. D., Petrov, Y., Pickard, L., Pickering, L., Pinzon Guerra, E. S., Pistillo, C., Popov, B., Posiadala-Zezula, M., Poutissou, J.-M., Poutissou, R., Przewlocki, P., Quilain, B., Radicioni, E., Ratoff, P. N., Ravonel, M., Rayner, M. A. M., Redij, A., Reinherz-Aronis, E., Riccio, C., Rojas, P., Rondio, E., Roth, S., Rubbia, A., Rychter, A., Sacco, R., Sakashita, K., Sánchez, F., Sato, F., Scantamburlo, E., Scholberg, K., Schoppmann, S., Schwehr, J., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shah, R., Shaikhiev, A., Shaker, F., Shaw, D., Shiozawa, M., Shirahige, T., Short, S., Smy, M., Sobczyk, J. T., Sorel, M., Southwell, L., Stamoulis, P., Steinmann, J., Stewart, T., Suda, Y., Suvorov, S., Suzuki, A., Suzuki, K., Suzuki, S. Y., Suzuki, Y., Tacik, R., Tada, M., Takahashi, S., Takeda, A., Takeuchi, Y., Tanaka, H. K., Tanaka, H. A., Terhorst, D., Terri, R., Thakore, T., Thompson, L. F., Tobayama, S., Toki, W., Tomura, T., Touramanis, C., Tsukamoto, T., Tzanov, M., Uchida, Y., Vacheret, A., Vagins, M., Vallari, Z., Vasseur, G., Wachala, T., Wakamatsu, K., Walter, C. W., Wark, D., Warzycha, W., Wascko, M. O., Weber, A., Wendell, R., Wilkes, R. J., Wilking, M. J., Wilkinson, C., Wilson, J. R., Wilson, R. J., Yamada, Y., Yamamoto, K., Yamamoto, M., Yanagisawa, C., Yano, T., Yen, S., Yershov, N., Yokoyama, M., Yoo, J., Yoshida, K., Yuan, T., Yu, M., Zalewska, A., Zalipska, J., Zambelli, L., Zaremba, K., Ziembicki, M., Zimmerman, E. D., Zito, M., and Żmuda, J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN:0031-9007
ISSN (Online):1079-7114
Published Online:05 May 2016
Copyright Holders:Copyright © 2016 American Physical Society
First Published:First published in Physical Review Letters 116(18):181801
Publisher Policy:Reproduced under a Creative Commons License

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