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| 題名: | Search for an H-Dibaryon with a Mass near 2mΛ in Υ(1S) and Υ(2S) Decays |
| 作者: | 陳鎰鋒;Kim, B H;Olsen, S L;Adachi, I;Aihara, H;Asner, D M;Aulchenko, V;Bay, A;Belous, K;Bhuyan, B;Bonvicini, G;Bozek, A;Bračko, M;Browder, T E;Chekelian, V;Chen, A;Cheon, B G;Chilikin, K;Chistov, R;Cho, I-S;Cho, K;Chobanova, V;Choi, S-K;Choi, Y;Cinabro, D;Dalseno, J;Doležal, Z;Eidelman, S;Epifanov, D;Esen, S;Farhat, H;Fast, J E;Gaur, V;Ganguly, S;Gillard, R;Goh, Y M;Hayasaka, K;Hayashii, H;Hoshi, Y;Hou, W-S;Hsiung, Y B;Hyun, H J;Inami, K;Ishikawa, A;Itoh, R;Iwasaki, Y;Julius, T;Kah, D H;Kang, J H;Kapusta, P;Kato, E;Kichimi, H;Kim, H J;Kim, H O;Kim, J H;Kim, K T;Kim, M J;Kim, S K;Kim, Y J;Kinoshita, K;Klucar, J;Ko, B R;Kodyš, P;Korpar, S;Kouzes, R T;Križan, P;Krokovny, P;Kumita, T;Kuzmin, A;Kwon, Y-J;Lange, J S;Lee, S-H;Li, J;Li, X;Li, Y;Libby, J;Liventsev, D;Matvienko, D;Miyabayashi, K;Miyata, H;Mizuk, R;Mohanty, G B;Moll, A;Muramatsu, N;Mussa, R;Nakano, E;Nakao, M;Nedelkovska, E;Ng, C;Nisar, N K;Nishida, S;Nishimura, K;Ohshima, T;Okuno, S;Pakhlov, P;Pakhlova, G;Park, H;Park, H K;Peters, M;Petrič, M;Piilonen, L E |
| 貢獻者: | 理學院物理學系 |
| 日期: | 2013-05-31 |
| 上傳時間: | 2026-04-23 12:53:54 (UTC+8) |
| 出版者: | American Physical Society;United States: American Physical Society |
| 摘要: | 摘要： We report the results of a high-statistics search for H dibaryon production in inclusive Υ(1S) and Υ(2S) decays. No indication of an H dibaryon with a mass near the M(H)=2m(Λ) threshold is seen in either the H→Λpπ(-) or ΛΛ decay channels and 90% confidence level branching-fraction upper limits are set that are between one and two orders of magnitude below the measured branching fractions for inclusive Υ(1S) and Υ(2S) decays to antideuterons. Since Υ(1S,2S) decays produce flavor-SU(3)-symmetric final states, these results put stringent constraints on H dibaryon properties. The results are based on analyses of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector at the KEKB e(+)e(-) collider.
其他題名： Phys Rev Lett
出版者： United States: American Physical Society
出版日期： 2013-05-31
出處： Physical review letters, 2013-05, Vol.110 (22), p.222002
資源來源： American Physical Society Journals
識別號： ISSN: 1079-7114
識別號： ISSN: 0031-9007
識別號： EISSN: 1079-7114
識別號： DOI: 10.1103/PhysRevLett.110.222002
識別號： PMID: 23767713 |
| 顯示於類別: | [物理學系] 期刊論文
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