|
新山 雅之 所属 京都産業大学 理学部 物理科学科 職種 教授 |
|
| 言語種別 | 英語 |
| 発行・発表の年月 | 2008/04 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Search for the Theta(+) via the K(+)p -> pi X+ reaction with a 1.2 GeV/c K+ beam |
| 執筆形態 | その他 |
| 掲載誌名 | PHYSICAL REVIEW C |
| 出版社・発行元 | AMER PHYSICAL SOC |
| 巻・号・頁 | 77(4) |
| 著者・共著者 | K. Miwa,S. Dairaku,D. Nakajima,S. Ajimura,J. Arvieux,H. Fujimura,H. Fujioka,T. Fukuda,H. Funahashi,M. Hayata,K. Hicks,K. Imai,S. Ishimoto,T. Kameyama,S. Kamigaito,S. Kinoshita,T. Koike,Y. Ma,T. Maruta,Y. Miura,M. Miyabe,T. Nagae,T. Nakano,K. Nakazawa,M. Naruki,H. Noumi,M. Niiyama,N. Saito,Y. Sato,S. Sawada,Y. Seki,M. Sekimoto,K. Senzaka,K. Shirotori,K. Shoji,S. Suzuki,H. Takahashi,T. Takahashi,T. N. Takahashi,H. Tamura,N. Tanaka,K. Tanida,A. Toyada,T. Watanabe,M. Yosoi,R. Zavislak |
| 概要 | The Theta(+) was searched for via the K(+)p -> pi X+ reaction using the 1.2 GeV/c K+ beam at the K6 beam line of the KEK-PS 12 GeV Proton Synchrotron. In the missing mass spectrum of the K(+)p -> pi X+ reaction, no clear peak structure was observed. Therefore a 90% C.L. upper limit of 3.5 mu b/sr was derived for the differential cross section averaged over 2(degrees) to 22(degrees) in the laboratory frame of the K(+)p -> pi(+)Theta(+) reaction. This upper limit is much smaller than the theoretical calculation for the t-channel process where a K-0* is exchanged. From the present result, either the t-channel process is excluded or the coupling constant of g(K*N Theta) is quite small. |
| DOI | 10.1103/PhysRevC.77.045203 |
| ISSN | 2469-9985/2469-9993 |