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新山 雅之 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2003 |
| 形態種別 | 研究論文（国際会議プロシーディングス） |
| 査読 | 査読あり |
| 標題 | Evidence for an exotic S=+1 baryon resonance at a mass of 1540 MeV |
| 執筆形態 | その他 |
| 掲載誌名 | INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS |
| 出版社・発行元 | AMER INST PHYSICS |
| 巻・号・頁 | 698,pp.539-542 |
| 著者・共著者 | KH Hicks,DS Ahn,JK Ahn,H Akimune,Y Asano,WC Chang,S Date,H Ejiri,H Fujimura,M Fujiwara,K Hicks,T Hotta,K Imai,T Ishikawa,T Iwata,H Kawai,ZY Kim,K Kino,H Kohri,NK Gai,S Makino,T Matsumura,N Matsuoka,T Mibe,K Miwa,M Miyabe,Y Miyachi,M Morita,N Muramatsu,T Nakano,M Niiyama,M Nomachi,Y Ohashi,T Ooba,H Ohkuma,DS Oshuev,C Rangacharyulu,A Sakaguchi,T Sasaki,R Shagin,Y Shiino,H Shimizu,Y Sugaya,MS Hama,H Toyokawa,A Wakai,CW Wang,SC Wang,K Yonehara,T Yorita,M Yoshimura,M Yosoi,RGT Zegers |
| 概要 | A new baryon resonance with manifestly exotic strangeness quantum number S = +1 was first observed from the LEPS detector at the SPring-8 facility in Japan. The photoproduction reaction gamman --> K(-)Theta(+) was measured, where the neutron is bound in a C-12 nucleus and the Theta(+) is the new name of this resonance. The existence of the Theta(+) was inferred by observing a peak in the missing mass spectrum of the K-, with the requirement of a coincident K+ in the detector from the decay of the Theta(+). The mass of the resonance is 1.54 +/- 0.01 GeV and a width of < 25 MeV. |
| ISSN | 0094-243X |