Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment
| Title: | Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment |
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| Authors: | Takhistov, V., Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Miura, M., Moriyama, S., Nakahata, M., Nakajima, T., Nakano, Y., Nakayama, S., Orii, A., Sekiya, H., Shiozawa, M., Takeda, A., Tanaka, H., Tomura, T., Wendell, R. A., Irvine, T., Kajita, T., Kametani, I., Kaneyuki, K., Nishimura, Y., Richard, E., Okumura, K., Labarga, L., Fernandez, P., Gustafson, J., Kachulis, C., Kearns, E., Raaf, J. L., Stone, J. L., Sulak, L. R., Berkman, S., Nantais, C. M., Tanaka, H. A., Tobayama, S., Goldhaber, M., Carminati, G., Kropp, W. R., Mine, S., Weatherly, P., Renshaw, A., Smy, M. B., Sobel, H. W., Ganezer, K. S., Hartfiel, B. L., Hill, J., Hong, N., Kim, J. Y., Lim, I. T., Himmel, A., Li, Z., Scholberg, K., Walter, C. W., Wongjirad, T., Ishizuka, T., Tasaka, S., Jang, J. S., Learned, J. G., Matsuno, S., Smith, S. N., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A. T., Takeuchi, Y., Yano, T., Hirota, S., Huang, K., Ieki, K., Kikawa, T., Minamino, A., Nakaya, T., Suzuki, K., Takahashi, S., Fukuda, Y., Choi, K., Itow, Y., Suzuki, T., Mijakowski, P., Frankiewicz, K., Hignight, J., Imber, J., Jung, C. K., Li, X., Palomino, J. L., Wilking, M. J., Yanagisawa, C., Ishino, H., Kayano, T., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Kuno, Y., Tacik, R., Kim, S. B., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Suda, Y., Totsuka, Y., Yokoyama, M., Bronner, C., Hartz, M., Martens, K., Marti, Ll., Suzuki, Y., Vagins, M. R., Martin, J. F., de Perio, P., Konaka, A., Chen, S., Zhang, Y., Wilkes, R. J. |
| Source: | Phys. Rev. Lett. 115, 121803 (2015) |
| Publication Year: | 2015 |
| Collection: | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| Subject Terms: | High Energy Physics - Experiment, High Energy Physics - Phenomenology |
| More Details: | Search results for nucleon decays $p \rightarrow e^+X$, $p \rightarrow \mu^+X$, $n \rightarrow \nu\gamma$ (where $X$ is an invisible, massless particle) as well as dinucleon decays $np \rightarrow e^+\nu$, $np \rightarrow \mu^+\nu$ and $np \rightarrow \tau^+\nu$ in the Super-Kamiokande experiment are presented. Using single-ring data from an exposure of 273.4 kton $\cdot$ years, a search for these decays yields a result consistent with no signal. Accordingly, lower limits on the partial lifetimes of $\tau_{p \rightarrow e^+X} > 7.9 \times 10^{32}$ years, $\tau_{p \rightarrow \mu^+X} > 4.1 \times 10^{32}$ years, $\tau_{n \rightarrow \nu\gamma} > 5.5 \times 10^{32}$ years, $\tau_{np \rightarrow e^+\nu} > 2.6 \times 10^{32}$ years, $\tau_{np \rightarrow \mu^+\nu} > 2.2 \times 10^{32}$ years and $\tau_{np \rightarrow \tau^+\nu} > 2.9 \times 10^{31}$ years at a $90 \% $ confidence level are obtained. Some of these searches are novel. Comment: 6 pages, 1 figure; minor corrections, length shortened, matches published version |
| Document Type: | Working Paper |
| DOI: | 10.1103/PhysRevLett.115.121803 |
| Access URL: | http://arxiv.org/abs/1508.05530 |
| Accession Number: | edsarx.1508.05530 |
| Database: | arXiv |
| DOI: | 10.1103/PhysRevLett.115.121803 |
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