Search for Λ 6H hypernucleus by the 6Li(π-,K+) reaction at pπ-=1.2 GeV/c

H. Sugimura, M. Agnello, Jung Keun Ahn, S. Ajimura, Y. Akazawa, N. Amano, K. Aoki, H. C. Bhang, N. Chiga, M. Endo, P. Evtoukhovitch, A. Feliciello, H. Fujioka, T. Fukuda, S. Hasegawa, S. Hayakawa, R. Honda, K. Hosomi, S. H. Hwang, Y. IchikawaY. Igarashi, K. Imai, N. Ishibashi, R. Iwasaki, C. W. Joo, R. Kiuchi, J. K. Lee, J. Y. Lee, K. Matsuda, Y. Matsumoto, K. Matsuoka, K. Miwa, Y. Mizoi, M. Moritsu, T. Nagae, S. Nagamiya, M. Nakagawa, M. Naruki, H. Noumi, R. Ota, B. J. Roy, P. K. Saha, A. Sakaguchi, H. Sako, C. Samanta, V. Samoilov, Y. Sasaki, S. Sato, M. Sekimoto, Y. Shimizu, T. Shiozaki, K. Shirotori, T. Soyama, T. Takahashi, T. N. Takahashi, H. Tamura, K. Tanabe, T. Tanaka, K. Tanida, A. O. Tokiyasu, Z. Tsamalaidze, M. Ukai, T. O. Yamamoto, Y. Yamamoto, S. B. Yang, K. Yoshida

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Abstract

We have carried out an experiment to search for a neutron-rich hypernucleus, Λ 6H, by the 6Li(π-,K+) reaction at pπ-=1.2 GeV/c. The obtained missing-mass spectrum with an estimated energy resolution of 3.2 MeV (FWHM) showed no peak structure corresponding to the Λ 6H hypernucleus neither below nor above the Λ 4H+2n particle decay threshold. An upper limit of the production cross section for the bound Λ 6H hypernucleus was estimated to be 1.2nb/sr at 90% confidence level.

Original languageEnglish
Pages (from-to)39-44
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume729
DOIs
Publication statusPublished - 2014 Feb 5
Externally publishedYes

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Sugimura, H., Agnello, M., Ahn, J. K., Ajimura, S., Akazawa, Y., Amano, N., Aoki, K., Bhang, H. C., Chiga, N., Endo, M., Evtoukhovitch, P., Feliciello, A., Fujioka, H., Fukuda, T., Hasegawa, S., Hayakawa, S., Honda, R., Hosomi, K., Hwang, S. H., ... Yoshida, K. (2014). Search for Λ 6H hypernucleus by the 6Li(π-,K+) reaction at pπ-=1.2 GeV/c. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 729, 39-44. https://doi.org/10.1016/j.physletb.2013.12.062