Search for Invisible Decay of theΥ(1S)

Tajima, O.; Hayashii, H.; Hazumi, M.; Inami, K.; Iwasaki, Y.; Uehara, S.; Abe, K.; Adachi, I.; Aihara, H.; Anipko, D.; Aulchenko, V.; Bakich, A. M.; Barberio, E.; Bedny, I.; Belous, K.; Bitenc, U.; Bizjak, I.; Bondar, A.; Bozek, A.; Bračko, M.; Browder, T. E.; Chang, M.-C.; Chen, A.; Chen, K.-F.; Chen, W. T.; Cheon, B. G.; Chistov, R.; Choi, Y.; Choi, Y. K.; Cole, S.; Dalseno, J.; Danilov, M.; Dash, M.; Drutskoy, A.; Eidelman, S.; Fratina, S.; Gabyshev, N.; Gershon, T.; Go, A.; Gokhroo, G.; Ha, H.; Haba, J.; Hayasaka, K.; Heffernan, D.; Hokuue, T.; Hoshi, Y.; Hou, S.; Hou, W.-S.; Iijima, T.; Ikado, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Kang, J. H.; Kataoka, S. U.; Katayama, N.; Kawai, H.; Kawasaki, T.; Khan, H. R.; Kichimi, H.; Kim, H. J.; Kim, S. K.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Križan, P.; Krokovny, P.; Kumar, R.; Kuo, C. C.; Kuzmin, A.; Kwon, Y.-J.; Lange, J. S.; Lee, J.; Lee, M. J.; Lesiak, T.; Limosani, A.; Lin, S.-W.; Liventsev, D.; Majumder, G.; Mandl, F.; Matsumoto, T.; McOnie, S.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Mori, T.; Mueller, J.; Nakamura, I.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Noguchi, S.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Onuki, Y.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, H.; Pestotnik, R.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Satoyama, N.; Schietinger, T.; Schneider, O.; Schümann, J.; Schwartz, A. J.; Seidl, R.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shibuya, H.; Shwartz, B.; Singh, J. B.; Sokolov, A.; Somov, A.; Soni, N.; Stanič, S.; Starič, M.; Stoeck, H.; Sumisawa, K.; Sumiyoshi, T.; Suzuki, S.; Takasaki, F.; Tamai, K.; Tamura, N.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Tian, X. C.; Tikhomirov, I.; Trabelsi, K.; Tsuboyama, T.; Tsukamoto, T.; Uglov, T.; Uno, S.; Urquijo, P.; Ushiroda, Y.; Usov, Y.; Varner, G.; Villa, S.; Wang, C. C.; Wang, C. H.; Wang, M.-Z.; Watanabe, Y.; Wedd, R.; Wicht, J.; Won, E.; Xie, Q. L.; Yabsley, B. D.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Zhang, Z. P.; Zhilich, V.; Zupanc, A.

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American Physical Society, Physical Review Letters, 13(98)

DOI: 10.1103/physrevlett.98.132001

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Search for Invisible Decay of theΥ(1S)

Journal article published in 2007 by O. Tajima, H. Hayashii, M. Hazumi

, K. Inami, Y. Iwasaki, S. Uehara, K. Abe, I. Adachi, H. Aihara, D. Anipko, V. Aulchenko, A. M. Bakich, E. Barberio, I. Bedny, K. Belous and other authors.

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Abstract

We report results of a search for the invisible decay of the Υ(1S) via the Υ(3S)→π+π-Υ(1S) transition using a data sample of 2.9 fb^{-1} at the Υ(3S) resonance. The data were collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No signal is found, and an upper limit for the branching fraction at the 90% confidence level is determined to be B(Υ(1S)→invisible)＜2.5×10^{-3}. PHYSICAL REVIEW LETTERS. v.98, n.13, 2007, p.132001-1 - 132001-6

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Search for Invisible Decay of theΥ(1S)

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