A new search for the $K_{L} \to \pi^0 \nu \overline{\nu}$ and $K_{L} \to \pi^{0} X^{0}$ decays

Autor: Ahn, J. K., Baek, K. Y., Banno, S., Beckford, B., Brubaker, B., Cai, T., Campbell, M., Carruth, C., Chen, S. H., Chu, S., Comfort, J., Duh, Y. T., Furukawa, T., Haraguchi, H., Hineno, T., Hsiung, Y. B., Hutcheson, M., Inagaki, T., Isoe, M., Iwai, E., Kamibayashi, T., Kamiji, I., Kawasaki, N., Kim, E. J., Kim, Y. J., Ko, J. W., Komatsubara, T. K., Kurilin, A. S., Lee, G. H., Lee, H. S., Lee, J. W., Lee, S. K., Lim, G. Y., Lin, C., Ma, J., Maeda, Y., Masuda, T., Matsumura, T., Mcfarland, D., Micallef, J., Miyazaki, K., Morgan, K., Murayama, R., Naito, D., Nakagiri, K., Nakajima, Y., Nakaya, Y., Nanjo, H., Nomura, T., Odani, Y., Ogata, R., Okuno, H., Ota, T., Ri, Y. D., Sasaki, M., Sasao, N., Sato, K., Sato, T., Seki, S., Shimogawa, T., Shinkawa, T., Shinohara, S., Shiomi, K., Son, J. S., Stevens, J., Su, S., Sugiyama, Y., Suzuki, S., Tajima, Y., Takahashi, G., Takashima, Y., Tecchio, M., Teo, I., Togawa, M., Toyoda, T., Tung, Y. C., Usuki, T., Wah, Y. W., Watanabe, H., Whallon, N., Woo, J. K., Xu, J., Yamaga, M., Yamamoto, S., Yamanaka, T., Yamauchi, H., Yanagida, Y., Yokota, H., Yoshida, H. Y., Yoshimoto, H.

Publikováno v: Prog. Theor. Exp. Phys. (2017) 021C01

We searched for the $CP$-violating rare decay of neutral kaon, $K_{L} \to \pi^0 \nu \overline{\nu}$, in data from the first 100 hours of physics running in 2013 of the J-PARC KOTO experiment. One candidate event was observed while $0.34\pm0.16$ backg

Externí odkaz: http://arxiv.org/abs/1609.03637

Study of the K0(L) --> pi0 pi0 nu nu-bar decay

Autor: E391a Collaboration, Ogata, R., Suzuki, S., Ahn, J. K., Akune, Y., Baranov, V., Chen, K. F., Comfort, J., Doroshenko, M., Fujioka, Y., Hsiung, Y. B., Inagaki, T., Ishibashi, S., Ishihara, N., Ishii, H., Iwai, E., Iwata, T., Kato, I., Kobayashi, S., Komatsu, S., Komatsubara, T. K., Kurilin, A. S., Kuzmin, E., Lednev, A., Lee, H. S., Lee, S. Y., Lim, G. Y., Ma, J., Matsumura, T., Moisseenko, A., Morii, H., Morimoto, T., Nakajima, Y., Nakano, T., Nanjo, H., Nishi, N., Nix, J., Nomura, T., Nomachi, M., Okuno, H., Omata, K., Perdue, G. N., Perov, S., Podolsky, S., Porokhovoy, S., Sakashita, K., Sasaki, T., Sasao, N., Sato, H., Sato, T., Sekimoto, M., Shimogawa, T., Shinkawa, T., Stepanenko, Y., Sugaya, Y., Sugiyama, A., Sumida, T., Tajima, Y., Takita, S., Tsamalaidze, Z., Tsukamoto, T., Tung, Y. C., Wah, Y. W., Watanabe, H., Wu, M. L., Yamaga, M., Yamanaka, T., Yoshida, H. Y., Yoshimura, Y., Zheng, Y.

The rare decay K0(L) --> pi0 pi0 nu nu-bar was studied with the E391a detector at the KEK 12-GeV proton synchrotron. Based on 9.4 x 10^9 K0L decays, an upper limit of 8.1 x 10^{-7} was obtained for the branching fraction at 90% confidence level. We a

Externí odkaz: http://arxiv.org/abs/1106.3404

Search for a light pseudoscalar particle in the decay $K^0_L \to \pi^0 \pi^0 X$

Autor: Tung, Y. C., Hsiung, Y. B., Wu, M. L., Chen, K. F., Ahn, J. K., Akune, Y., Baranov, V., Comfort, J., Doroshenko, M., Fujioka, Y., Inagaki, T., Ishibashi, S., Ishihara, N., Ishii, H., Iwai, E., Iwata, T., Kato, I., Kobayashi, S., Komatsubara, T. K., Kurilin, A. S., Kuzmin, E., Lednev, A., Lee, H. S., Lee, S. Y., Lim, G. Y., Ma, J., Matsumura, T., Moisseenko, A., Morii, H., Morimoto, T., Nakano, T., Nanjo, H., Nix, J., Nomura, T., Nomachi, M., Ogata, R., Okuno, H., Omata, K., Perdue, G. N., Podolsky, S., Sakashita, K., Sasaki, T., Sasao, N., Sato, H., Sato, T., Sekimoto, M., Shinkawa, T., Sugaya, Y., Sugiyama, A., Sumida, T., Suzuki, S., Tajima, Y., Takita, S., Tsamalaidze, Z., Tsukamoto, T., Wah, Y., Watanabe, H., Yamaga, M., Yamanaka, T., Yoshida, H. Y., Yoshimura, Y., Zheng, Y.

Publikováno v: Phys.Rev.Lett.102:051802,2009

We performed a search for a light pseudoscalar particle $X$ in the decay $K_L^0->pi0pi0X$, $X->\gamma\gamma$ with the E391a detector at KEK. Such a particle with a mass of 214.3 MeV/$c^2$ was suggested by the HyperCP experiment. We found no evidence

Externí odkaz: http://arxiv.org/abs/0810.4222

Search for $K_L\to {\pi }^0\nu \overline{\nu }$ and $K_L\to {\pi }^0{X}^0$ Decays at the J-PARC KOTO Experiment

Autor: Ahn, J. K., Beckford, B., Beechert, J., Bryant, K., Campbell, M., Chen, S. H., Comfort, J., Dona, K., Hara, N., Haraguchi, H., Hsiung, Y. B., Hutcheson, M., Inagaki, T., Kamiji, I., Kawasaki, N., Kim, E. J., Kim, J. L., Kim, Y. J., Ko, J. W., Komatsubara, T. K., Kotera, K., Kurilin, A. S., Lee, J. W., Lim, G. Y., Lin, C., Lin, Q., Luo, Y., Ma, J., Maeda, Y., Mari, T., Masuda, T., Matsumura, T., Mcfarland, D., McNeal, N., Micallef, J., Miyazaki, K., Murayama, R., Naito, D., Nakagiri, K., Nanjo, H., Nishimiya, H., Nomura, T., Ohsugi, M., Okuno, H., Sasaki, M., Sasao, N., Sato, K., Sato, T., Sato, Y., Schamis, H., Seki, S., Shimizu, N., Shimogawa, T., Shinkawa, T., Shinohara, S., Shiomi, K., Su, S., Sugiyama, Y., Suzuki, S., Tajima, Y., Taylor, M., Tecchio, M., Togawa, M., Tung, Y. C., Wah, Y. W., Watanabe, H., Woo, J. K., Yamanaka, T., Yoshida, H. Y.

Publikováno v: Physical Review Letters

A search for the rare decay KL→π0νν¯ was performed. With the data collected in 2015, corresponding to 2.2×1019 protons on target, a single event sensitivity of (1.30±0.01stat±0.14syst)×10−9 was achieved and no candidate events were observ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3000::a4fd4ab2ec107687174bdb5817fc3d95
http://repo.scoap3.org/api

A new search for the $K_{L} \to ��^0 ��\overline��$ and $K_{L} \to ��^{0} X^{0}$ decays

Autor: Ahn, J. K., Baek, K. Y., Banno, S., Beckford, B., Brubaker, B., Cai, T., Campbell, M., Carruth, C., Chen, S. H., Chu, S., Comfort, J., Duh, Y. T., Furukawa, T., Haraguchi, H., Hineno, T., Hsiung, Y. B., Hutcheson, M., Inagaki, T., Isoe, M., Iwai, E., Kamibayashi, T., Kamiji, I., Kawasaki, N., Kim, E. J., Kim, Y. J., Ko, J. W., Komatsubara, T. K., Kurilin, A. S., Lee, G. H., Lee, H. S., Lee, J. W., Lee, S. K., Lim, G. Y., Lin, C., Ma, J., Maeda, Y., Masuda, T., Matsumura, T., Mcfarland, D., Micallef, J., Miyazaki, K., Morgan, K., Murayama, R., Naito, D., Nakagiri, K., Nakajima, Y., Nakaya, Y., Nanjo, H., Nomura, T., Odani, Y., Ogata, R., Okuno, H., Ota, T., Ri, Y. D., Sasaki, M., Sasao, N., Sato, K., Sato, T., Seki, S., Shimogawa, T., Shinkawa, T., Shinohara, S., Shiomi, K., Son, J. S., Stevens, J., Su, S., Sugiyama, Y., Suzuki, S., Tajima, Y., Takahashi, G., Takashima, Y., Tecchio, M., Teo, I., Togawa, M., Toyoda, T., Tung, Y. C., Usuki, T., Wah, Y. W., Watanabe, H., Whallon, N., Woo, J. K., Xu, J., Yamaga, M., Yamamoto, S., Yamanaka, T., Yamauchi, H., Yanagida, Y., Yokota, H., Yoshida, H. Y., Yoshimoto, H.

We searched for the $CP$-violating rare decay of neutral kaon, $K_{L} \to ��^0 ��\overline��$, in data from the first 100 hours of physics running in 2013 of the J-PARC KOTO experiment. One candidate event was observed while $0.34\pm0.16$

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2909ca0d8af24d4c3d80debd9e290cb7