Search for the deeply bound K- pp state from the semi-inclusive forward-neutron spectrum in the in-flight K- reaction on helium-3

T. Hashimoto, S. Ajimura, G. Beer, H. Bhang, M. Bragadireanu, L. Busso, M. Cargnelli, S. Choi, C. Curceanu, S. Enomoto, D. Faso, H. Fujioka, Y. Fujiwara, T. Fukuda, C. Guaraldo, R. S. Hayano, T. Hiraiwa, M. Iio, M. Iliescu, K. InoueY. Ishiguro, T. Ishikawa, S. Ishimoto, K. Itahashi, M. Iwai, M. Iwasaki, Y. Kato, S. Kawasaki, P. Kienle, H. Kou, Y. Ma, J. Marton, Y. Matsuda, Y. Mizoi, O. Morra, T. Nagae, H. Noumi, H. Ohnishi, S. Okada, H. Outa, K. Piscicchia, M. Poli Lener, A. Romero Vidal, Y. Sada, A. Sakaguchi, F. Sakuma, M. Sato, A. Scordo, M. Sekimoto, H. Shi, D. Sirghi, F. Sirghi, S. Suzuki, T. Suzuki, K. Tanida, H. Tatsuno, M. Tokuda, D. Tomono, A. Toyoda, K. Tsukada, O. Vazquez Doce, E. Widmann, T. Yamaga, T. Yamazaki, H. Yim, Q. Zhang, J. Zmeskal

研究成果: Article査読

18 被引用数 (Scopus)

抄録

An experiment to search for the K- pp bound state was performed via the in-flight 3He(K-, n) reaction using 5.3 × 109 kaons at 1GeV/c at the J-PARC hadron experimental facility. In the semi-inclusive neutron missing-mass spectrum at θnlab = 0°, no significant peak was observed in the region corresponding to K- pp binding energy larger than 80MeV, where a bump structure has been reported in the Λp final state in different reactions. Assuming the state to be isotropically decaying into Λp, mass-dependent upper limits on the production cross section were determined to be 30-180, 70-250, and 100-270 μb/sr, for the natural widths of 20, 60, and 100MeV, respectively, at 95% confidence level.

本文言語English
論文番号061D01
ジャーナルProgress of Theoretical and Experimental Physics
2015
6
DOI
出版ステータスPublished - 2015
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Search for the deeply bound K<sup>-</sup> pp state from the semi-inclusive forward-neutron spectrum in the in-flight K<sup>-</sup> reaction on helium-3」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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