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Title: Search for $$n-\bar{n}$$ oscillation in Super-Kamiokande

Abstract

In this study, a search for neutron-antineutron ($$n-\bar{n}$$) oscillation was undertaken in Super-Kamiokande using the 1489 live-day or 2.45×1034 neutron-year exposure data. This process violates both baryon and baryon minus lepton numbers by an absolute value of two units and is predicted by a large class of hypothetical models where the seesaw mechanism is incorporated to explain the observed tiny neutrino masses and the matter-antimatter asymmetry in the Universe. No evidence for $$n-\bar{n}$$ oscillation was found, the lower limit of the lifetime for neutrons bound in 16O, in an analysis that included all of the significant sources of experimental uncertainties, was determined to be 1.9×1032 years at the 90% confidence level. The corresponding lower limit for the oscillation time of free neutrons was calculated to be 2.7×108 s using a theoretical value of the nuclear suppression factor of 0.517 × 1023 s-1 and its uncertainty.

Authors:
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Publication Date:
Research Org.:
Nuclear Science and Security Consortium
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
Contributing Org.:
Super-Kamiokande Collaboration
OSTI Identifier:
1454596
Grant/Contract Number:  
NA0000979
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 91; Journal Issue: 7; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Abe, K., Hayato, Y., Iida, T., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Y., Ueshima, K., Watanabe, H., Higuchi, I., Ishihara, C., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okumura, K., Saji, C., Takenaga, Y., Clark, S., Desai, S., Dufour, F., Herfurth, A., Kearns, E., Likhoded, S., Litos, M., Raaf, J. L., Stone, J. L., Sulak, L. R., Wang, W., Goldhaber, M., Casper, D., Cravens, J. P., Dunmore, J., Griskevich, J., Kropp, W. R., Liu, D. W., Mine, S., Regis, C., Smy, M. B., Sobel, H. W., Vagins, M. R., Ganezer, K. S., Hartfiel, B., Hill, J., Keig, W. E., Jang, J. S., Jeoung, I. S., Kim, J. Y., Lim, I. T., Scholberg, K., Tanimoto, N., Walter, C. W., Wendell, R., Ellsworth, R. W., Tasaka, S., Guillian, G., Learned, J. G., Matsuno, S., Messier, M. D., Ichikawa, A. K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Nitta, K., Oyama, Y., Suzuki, A. T., Hasegawa, M., Maesaka, H., Nakaya, T., Sasaki, T., Sato, H., Tanaka, H., Yamamoto, S., Yokoyama, M., Haines, T. J., Dazeley, S., Hatakeyama, S., Svoboda, R., Sullivan, G. W., Gran, R., Habig, A., Fukuda, Y., Itow, Y., Koike, T., Jung, C. K., Kato, T., Kobayashi, K., McGrew, C., Sarrat, A., Terri, R., Yanagisawa, C., Tamura, N., Ikeda, M., Sakuda, M., Kuno, Y., Yoshida, M., Kim, S. B., Yang, B. S., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H. K., Gando, Y., Hasegawa, T., Inoue, K., Ishii, H., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Totsuka, Y., Chen, S., Deng, Z., Liu, Y., Kielczewska, D., Berns, H. G., Shiraishi, K. K., Thrane, E., Washburn, K., and Wilkes, R. J. Search for $n-\bar{n}$ oscillation in Super-Kamiokande. United States: N. p., 2015. Web. doi:10.1103/PhysRevD.91.072006.
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Abe, K., Hayato, Y., Iida, T., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Y., Ueshima, K., Watanabe, H., Higuchi, I., Ishihara, C., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okumura, K., Saji, C., Takenaga, Y., Clark, S., Desai, S., Dufour, F., Herfurth, A., Kearns, E., Likhoded, S., Litos, M., Raaf, J. L., Stone, J. L., Sulak, L. R., Wang, W., Goldhaber, M., Casper, D., Cravens, J. P., Dunmore, J., Griskevich, J., Kropp, W. R., Liu, D. W., Mine, S., Regis, C., Smy, M. B., Sobel, H. W., Vagins, M. R., Ganezer, K. S., Hartfiel, B., Hill, J., Keig, W. E., Jang, J. S., Jeoung, I. S., Kim, J. Y., Lim, I. T., Scholberg, K., Tanimoto, N., Walter, C. W., Wendell, R., Ellsworth, R. W., Tasaka, S., Guillian, G., Learned, J. G., Matsuno, S., Messier, M. D., Ichikawa, A. K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Nitta, K., Oyama, Y., Suzuki, A. T., Hasegawa, M., Maesaka, H., Nakaya, T., Sasaki, T., Sato, H., Tanaka, H., Yamamoto, S., Yokoyama, M., Haines, T. J., Dazeley, S., Hatakeyama, S., Svoboda, R., Sullivan, G. W., Gran, R., Habig, A., Fukuda, Y., Itow, Y., Koike, T., Jung, C. K., Kato, T., Kobayashi, K., McGrew, C., Sarrat, A., Terri, R., Yanagisawa, C., Tamura, N., Ikeda, M., Sakuda, M., Kuno, Y., Yoshida, M., Kim, S. B., Yang, B. S., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H. K., Gando, Y., Hasegawa, T., Inoue, K., Ishii, H., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Totsuka, Y., Chen, S., Deng, Z., Liu, Y., Kielczewska, D., Berns, H. G., Shiraishi, K. K., Thrane, E., Washburn, K., & Wilkes, R. J. Search for $n-\bar{n}$ oscillation in Super-Kamiokande. United States. https://doi.org/10.1103/PhysRevD.91.072006
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Abe, K., Hayato, Y., Iida, T., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Y., Ueshima, K., Watanabe, H., Higuchi, I., Ishihara, C., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okumura, K., Saji, C., Takenaga, Y., Clark, S., Desai, S., Dufour, F., Herfurth, A., Kearns, E., Likhoded, S., Litos, M., Raaf, J. L., Stone, J. L., Sulak, L. R., Wang, W., Goldhaber, M., Casper, D., Cravens, J. P., Dunmore, J., Griskevich, J., Kropp, W. R., Liu, D. W., Mine, S., Regis, C., Smy, M. B., Sobel, H. W., Vagins, M. R., Ganezer, K. S., Hartfiel, B., Hill, J., Keig, W. E., Jang, J. S., Jeoung, I. S., Kim, J. Y., Lim, I. T., Scholberg, K., Tanimoto, N., Walter, C. W., Wendell, R., Ellsworth, R. W., Tasaka, S., Guillian, G., Learned, J. G., Matsuno, S., Messier, M. D., Ichikawa, A. K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Nitta, K., Oyama, Y., Suzuki, A. T., Hasegawa, M., Maesaka, H., Nakaya, T., Sasaki, T., Sato, H., Tanaka, H., Yamamoto, S., Yokoyama, M., Haines, T. J., Dazeley, S., Hatakeyama, S., Svoboda, R., Sullivan, G. W., Gran, R., Habig, A., Fukuda, Y., Itow, Y., Koike, T., Jung, C. K., Kato, T., Kobayashi, K., McGrew, C., Sarrat, A., Terri, R., Yanagisawa, C., Tamura, N., Ikeda, M., Sakuda, M., Kuno, Y., Yoshida, M., Kim, S. B., Yang, B. S., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H. K., Gando, Y., Hasegawa, T., Inoue, K., Ishii, H., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Totsuka, Y., Chen, S., Deng, Z., Liu, Y., Kielczewska, D., Berns, H. G., Shiraishi, K. K., Thrane, E., Washburn, K., and Wilkes, R. J. Fri . "Search for $n-\bar{n}$ oscillation in Super-Kamiokande". United States. https://doi.org/10.1103/PhysRevD.91.072006. https://www.osti.gov/servlets/purl/1454596.
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@article{osti_1454596,
title = {Search for $n-\bar{n}$ oscillation in Super-Kamiokande},
author = {Abe, K. and Hayato, Y. and Iida, T. and Ishihara, K. and Kameda, J. and Koshio, Y. and Minamino, A. and Mitsuda, C. and Miura, M. and Moriyama, S. and Nakahata, M. and Obayashi, Y. and Ogawa, H. and Sekiya, H. and Shiozawa, M. and Suzuki, Y. and Takeda, A. and Takeuchi, Y. and Ueshima, K. and Watanabe, H. and Higuchi, I. and Ishihara, C. and Ishitsuka, M. and Kajita, T. and Kaneyuki, K. and Mitsuka, G. and Nakayama, S. and Nishino, H. and Okumura, K. and Saji, C. and Takenaga, Y. and Clark, S. and Desai, S. and Dufour, F. and Herfurth, A. and Kearns, E. and Likhoded, S. and Litos, M. and Raaf, J. L. and Stone, J. L. and Sulak, L. R. and Wang, W. and Goldhaber, M. and Casper, D. and Cravens, J. P. and Dunmore, J. and Griskevich, J. and Kropp, W. R. and Liu, D. W. and Mine, S. and Regis, C. and Smy, M. B. and Sobel, H. W. and Vagins, M. R. and Ganezer, K. S. and Hartfiel, B. and Hill, J. and Keig, W. E. and Jang, J. S. and Jeoung, I. S. and Kim, J. Y. and Lim, I. T. and Scholberg, K. and Tanimoto, N. and Walter, C. W. and Wendell, R. and Ellsworth, R. W. and Tasaka, S. and Guillian, G. and Learned, J. G. and Matsuno, S. and Messier, M. D. and Ichikawa, A. K. and Ishida, T. and Ishii, T. and Iwashita, T. and Kobayashi, T. and Nakadaira, T. and Nakamura, K. and Nishikawa, K. and Nitta, K. and Oyama, Y. and Suzuki, A. T. and Hasegawa, M. and Maesaka, H. and Nakaya, T. and Sasaki, T. and Sato, H. and Tanaka, H. and Yamamoto, S. and Yokoyama, M. and Haines, T. J. and Dazeley, S. and Hatakeyama, S. and Svoboda, R. and Sullivan, G. W. and Gran, R. and Habig, A. and Fukuda, Y. and Itow, Y. and Koike, T. and Jung, C. K. and Kato, T. and Kobayashi, K. and McGrew, C. and Sarrat, A. and Terri, R. and Yanagisawa, C. and Tamura, N. and Ikeda, M. and Sakuda, M. and Kuno, Y. and Yoshida, M. and Kim, S. B. and Yang, B. S. and Ishizuka, T. and Okazawa, H. and Choi, Y. and Seo, H. K. and Gando, Y. and Hasegawa, T. and Inoue, K. and Ishii, H. and Nishijima, K. and Ishino, H. and Watanabe, Y. and Koshiba, M. and Totsuka, Y. and Chen, S. and Deng, Z. and Liu, Y. and Kielczewska, D. and Berns, H. G. and Shiraishi, K. K. and Thrane, E. and Washburn, K. and Wilkes, R. J.},
abstractNote = {In this study, a search for neutron-antineutron ($n-\bar{n}$) oscillation was undertaken in Super-Kamiokande using the 1489 live-day or 2.45×1034 neutron-year exposure data. This process violates both baryon and baryon minus lepton numbers by an absolute value of two units and is predicted by a large class of hypothetical models where the seesaw mechanism is incorporated to explain the observed tiny neutrino masses and the matter-antimatter asymmetry in the Universe. No evidence for $n-\bar{n}$ oscillation was found, the lower limit of the lifetime for neutrons bound in 16O, in an analysis that included all of the significant sources of experimental uncertainties, was determined to be 1.9×1032 years at the 90% confidence level. The corresponding lower limit for the oscillation time of free neutrons was calculated to be 2.7×108 s using a theoretical value of the nuclear suppression factor of 0.517 × 1023 s-1 and its uncertainty.},
doi = {10.1103/PhysRevD.91.072006},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 7,
volume = 91,
place = {United States},
year = {Fri Apr 10 00:00:00 EDT 2015},
month = {Fri Apr 10 00:00:00 EDT 2015}
}
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