{"paper":{"title":"Missing-mass spectroscopy with the ${}^{6}$Li($\\pi^{-}, K^{+}$)X reaction to search for ${}^{6}_{\\Lambda}$H","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. Feliciello, A. O. Tokiyasu, A. Sakaguchi, B. J. Roy, C. Samanta, C. W. Joo, H. C. Bhang, H. Fujioka, H. Noumi, H. Sako, H. Sugimura, H. Tamura, J. K. Ahn, J. K. Lee, J. Y. Lee, K. Aoki, K. Hosomi, K. Imai, K. Matsuda, K. Matsuoka, K. Miwa, K. Shirotori, K. Tanabe, K. Tanida, K. Yoshida, M. Agnello, M. Endo, M. Moritsu, M. Nakagawa, M. Naruki, M. Sekimoto, M. Ukai, N. Amano, N. Chiga, N. Ishibashi, P. Evtoukhovitch, P. K. Saha, R. Honda, R. Iwasaki, R. Kiuchi, R. Ota, S. Ajimura, S. B. Yang, S. Hasegawa, S. H. Hayakawa, S. H. Hwang, S. Nagamiya, S. Sato, T. Fukuda, T. Nagae, T. N. Takahashi, T. O. Yamamoto, T. Shiozaki, T. Soyama, T. Takahashi, T. Tanaka, V. Samoilov, Y. Akazawa, Y. Ichikawa, Y. Igarashi, Y. Matsumoto, Y. Mizoi, Y. Sasaki, Y. Shimizu, Y. Yamamoto, Z. Tsamalaidze","submitted_at":"2017-03-02T05:10:13Z","abstract_excerpt":"We searched for the bound state of the neutron-rich $\\Lambda$-hypernucleus ${}^{6}_{\\Lambda}$H, using the ${}^{6}$Li($\\pi^{-}, K^{+}$)X double charge-exchange reaction at a $\\pi^{-}$ beam momentum of 1.2 GeV/c at J-PARC. A total of $1.4 \\times 10^{12}$ $\\pi^{-}$ was driven onto a ${}^{6}$Li target of 3.5-g/$\\rm cm^2$ thickness. No event was observed below the bound threshold, i.e., the mass of ${}^{4}_{\\Lambda}$H + 2n, in the missing-mass spectrum of the ${}^{6}$Li($\\pi^{-}, K^{+}$)X reaction in the $2^{\\circ}$ < $\\theta_{\\pi K}$ < $20^{\\circ}$ angular range. Furthermore, no event was found up"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.00623","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}