Measurement of neutrino oscillation by the K2K experiment

Ahn, M. H.; Aliu, E.; Andringa, S.; Aoki, S.; Aoyama, Y.; Argyriades, J.; Asakura, K.; Ashie, R.; Berghaus, F.; Berns, H. G.; Bhang, H.; Blondel, A.; Borghi, S.; Bouchez, J.; Boyd, S. C.; Burguet Castell, J.; Casper, D.; Catala, J.; Cavata, C.; Cervera, A.; Chen, S. M.; Cho, K. O.; Choi, J. H.; Dore, Ubaldo; Echigo, S.; Espinal, X.; Fechner, M.; Fernandez, E.; Fujii, K.; Fujii, Y.; Fukuda, S.; Fukuda, Y.; Gomez Cadenas, J.; Gran, R.; Hara, T.; Hasegawa, M.; Hasegawa, T.; Hayashi, K.; Hayato, Y.; Helmer, R. L.; Higuchi, I.; Hill, J.; Hiraide, K.; Hirose, E.; Hosaka, J.; Ichikawa, A. K.; Ieiri, M.; Iinuma, M.; Ikeda, A.; Inagaki, T.; Ishida, T.; Ishihara, K.; Ishii, H.; Ishii, T.; Ishino, H.; Ishitsuka, M.; Itow, Y.; Iwashita, T.; Jang, H. I.; Jang, J. S.; Jeon, E. J.; Jeong, I. S.; Joo, K. K.; Jover, G.; Jung, C. K.; Kajita, T.; Kameda, J.; Kaneyuki, K.; Kang, B. H.; Kato, I.; Kato, Y.; Kearns, E.; Kerr, D.; Kim, C. O.; Khabibullin, M.; Khotjantsev, A.; Kielczewska, D.; Kim, B. J.; Kim, H. I.; Kim, J. H.; Kim, J. Y.; Kim, S. B.; Kitamura, M.; Kitching, P.; Kobayashi, K.; Kobayashi, T.; Kohama, M.; Konaka, A.; Koshio, Y.; Kropp, W.; Kubota, J.; Kudenko, Yu; Kume, G.; Kuno, Y.; Kurimoto, Y.; Kutter, T.; Learned, J.; Likhoded, S.; Lim, I. T.; Lim, S. H.; Loverre, Pier Ferruccio; Ludovici, L.; Maesaka, H.; Mallet, J.; Mariani, C.; Martens, K.; Maruyama, T.; Matsuno, S.; Matveev, V.; Mauger, C.; Mahn, Kbm; Mcgrew, C.; Mikheyev, S.; Minakawa, M.; Minamino, A.; Mine, S.; Mineev, O.; Mitsuda, C.; Mitsuka, G.; Miura, M.; Moriguchi, Y.; Morita, T.; Moriyama, S.; Nakadaira, T.; Nakahata, M.; Nakamura, K.; Nakano, I.; Nakata, F.; Nakaya, T.; Nakayama, S.; Namba, T.; Nambu, R.; Nawang, S.; Nishikawa, K.; Nishino, H.; Nishiyama, S.; Nitta, K.; Noda, S.; Noumi, H.; Nova, F.; Novella, P.; Obayashi, Y.; Okada, A.; Okumura, K.; Okumura, M.; Onchi, M.; Ooyabu, T.; Oser, S. M.; Otaki, T.; Oyama, Y.; Pac, M. Y.; Park, H.; Pierre, F.; Rodriguez, A.; Saji, C.; Sakai, A.; Sakuda, M.; Sakurai, N.; Sanchez, F.; Sarrat, A.; Sasaki, T.; Sato, H.; Sato, K.; Scholberg, K.; Schroeter, R.; Sekiguchi, M.; Seo, E.; Sharkey, E.; Shima, A.; Shiozawa, M.; Shiraishi, K.; Sitjes, G.; Smy, M.; So, H.; Sobel, H.; Sorel, M.; Stone, J.; Sulak, L.; Suga, Y.; Suzuki, A.; Suzuki, Y.; Suzuki, Y.; Tada, M.; Takahashi, T.; Takasaki, M.; Takatsuki, M.; Takenaga, Y.; Takenaka, K.; Takeuchi, H.; Takeuchi, Y.; Taki, K.; Takubo, Y.; Tamura, N.; Tanaka, H.; Tanaka, K.; Tanaka, M.; Tanaka, Y.; Tashiro, K.; Terri, R.; T'Jampens, S.; Tornero Lopez, A.; Toshito, T.; Totsuka, Y.; Ueda, S.; Vagins, M.; Whitehead, L.; Walter, Cw; Wang, W.; Wilkes, R. J.; Yamada, S.; Yamada, Y.; Yamamoto, S.; Yamanoi, Y.; Yanagisawa, C.; Yershov, N.; Yokoyama, H.; Yokoyama, M.; Yoo, J.; Yoshida, M.; Zalipska, J.

doi:10.1103/physrevd.74.072003

We present measurements of nu(mu) disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment. One-hundred and twelve beam-originated neutrino events are observed in the fiducial volume of Super-Kamiokande with an expectation of 158.1(-8.6)(+9.2) events without oscillation. A distortion of the energy spectrum is also seen in 58 single-ring muonlike events with reconstructed energies. The probability that the observations are explained by the expectation for no neutrino oscillation is 0.0015% (4.3 sigma). In a two-flavor oscillation scenario, the allowed Delta m(2) region at sin(2)2 theta=1 is between 1.9 and 3.5x10(-3) eV(2) at the 90% C.L. with a best-fit value of 2.8x10(-3) eV(2).

Measurement of neutrino oscillation by the K2K experiment / M. H., A., E., A., S., A., S., A., Y., A., J., A., K., A., R., A., F., B., H. G., B., H., B., A., B., S., B., J., B., S. C., B., J., B.C., D., C., J., C., C., C., A., C., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 74:7(2006). [10.1103/physrevd.74.072003]

Measurement of neutrino oscillation by the K2K experiment

M. H. Ahn;E. Aliu;S. Andringa;S. Aoki;Y. Aoyama;J. Argyriades;K. Asakura;R. Ashie;F. Berghaus;H. G. Berns;H. Bhang;A. Blondel;S. Borghi;J. Bouchez;S. C. Boyd;J. Burguet Castell;D. Casper;J. Catala;C. Cavata;A. Cervera;S. M. Chen;K. O. Cho;J. H. Choi;DORE, Ubaldo;S. Echigo;X. Espinal;M. Fechner;E. Fernandez;K. Fujii;Y. Fujii;S. Fukuda;Y. Fukuda;J. Gomez Cadenas;R. Gran;T. Hara;M. Hasegawa;T. Hasegawa;K. Hayashi;Y. Hayato;R. L. Helmer;I. Higuchi;J. Hill;K. Hiraide;E. Hirose;J. Hosaka;A. K. Ichikawa;M. Ieiri;M. Iinuma;A. Ikeda;T. Inagaki;T. Ishida;K. Ishihara;H. Ishii;T. Ishii;H. Ishino;M. Ishitsuka;Y. Itow;T. Iwashita;H. I. Jang;J. S. Jang;E. J. Jeon;I. S. Jeong;K. K. Joo;G. Jover;C. K. Jung;T. Kajita;J. Kameda;K. Kaneyuki;B. H. Kang;I. Kato;Y. Kato;E. Kearns;D. Kerr;C. O. Kim;M. Khabibullin;A. Khotjantsev;D. Kielczewska;B. J. Kim;H. I. Kim;J. H. Kim;J. Y. Kim;S. B. Kim;M. Kitamura;P. Kitching;K. Kobayashi;T. Kobayashi;M. Kohama;A. Konaka;Y. Koshio;W. Kropp;J. Kubota;Yu Kudenko;G. Kume;Y. Kuno;Y. Kurimoto;T. Kutter;J. Learned;S. Likhoded;I. T. Lim;S. H. Lim;LOVERRE, Pier Ferruccio;L. Ludovici;H. Maesaka;J. Mallet;C. Mariani;K. Martens;T. Maruyama;S. Matsuno;V. Matveev;C. Mauger;Kbm Mahn;C. Mcgrew;S. Mikheyev;M. Minakawa;A. Minamino;S. Mine;O. Mineev;C. Mitsuda;G. Mitsuka;M. Miura;Y. Moriguchi;T. Morita;S. Moriyama;T. Nakadaira;M. Nakahata;K. Nakamura;I. Nakano;F. Nakata;T. Nakaya;S. Nakayama;T. Namba;R. Nambu;S. Nawang;K. Nishikawa;H. Nishino;S. Nishiyama;K. Nitta;S. Noda;H. Noumi;F. Nova;P. Novella;Y. Obayashi;A. Okada;K. Okumura;M. Okumura;M. Onchi;T. Ooyabu;S. M. Oser;T. Otaki;Y. Oyama;M. Y. Pac;H. Park;F. Pierre;A. Rodriguez;C. Saji;A. Sakai;M. Sakuda;N. Sakurai;F. Sanchez;A. Sarrat;T. Sasaki;H. Sato;K. Sato;K. Scholberg;R. Schroeter;M. Sekiguchi;E. Seo;E. Sharkey;A. Shima;M. Shiozawa;K. Shiraishi;G. Sitjes;M. Smy;H. So;H. Sobel;M. Sorel;J. Stone;L. Sulak;Y. Suga;A. Suzuki;Y. Suzuki;Y. Suzuki;M. Tada;T. Takahashi;M. Takasaki;M. Takatsuki;Y. Takenaga;K. Takenaka;H. Takeuchi;Y. Takeuchi;K. Taki;Y. Takubo;N. Tamura;H. Tanaka;K. Tanaka;M. Tanaka;Y. Tanaka;K. Tashiro;R. Terri;S. T'Jampens;A. Tornero Lopez;T. Toshito;Y. Totsuka;S. Ueda;M. Vagins;L. Whitehead;Walter Cw;W. Wang;R. J. Wilkes;S. Yamada;Y. Yamada;S. Yamamoto;Y. Yamanoi;C. Yanagisawa;N. Yershov;H. Yokoyama;M. Yokoyama;J. Yoo;M. Yoshida;J. Zalipska

2006

Abstract

We present measurements of nu(mu) disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment. One-hundred and twelve beam-originated neutrino events are observed in the fiducial volume of Super-Kamiokande with an expectation of 158.1(-8.6)(+9.2) events without oscillation. A distortion of the energy spectrum is also seen in 58 single-ring muonlike events with reconstructed energies. The probability that the observations are explained by the expectation for no neutrino oscillation is 0.0015% (4.3 sigma). In a two-flavor oscillation scenario, the allowed Delta m(2) region at sin(2)2 theta=1 is between 1.9 and 3.5x10(-3) eV(2) at the 90% C.L. with a best-fit value of 2.8x10(-3) eV(2).

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	Anno di pubblicazione
	
				2006
			
	Tipologia
	
				01 Pubblicazione su rivista::01a Articolo in rivista
			
	Citazione
	
				Measurement of neutrino oscillation by the K2K experiment / M. H., A., E., A., S., A., S., A., Y., A., J., A., K., A., R., A., F., B., H. G., B., H., B., A., B., S., B., J., B., S. C., B., J., B.C., D., C., J., C., C., C., A., C., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 74:7(2006). [10.1103/physrevd.74.072003]
			
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				01a Articolo in rivista

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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/90905

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