{"paper":{"title":"Measurement of the mesonic decay branch of the $\\bar{K}\\!N\\!N$ quasi-bound state","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. Sakaguchi, A. Scordo, A. Toyoda, C. Curceanu, C. Guaraldo, D. Sirghi, D. Tomono, E. Widmann, F. Sakuma, F. Sirghi, G. Beer, H. Asano, H. Bhang, H. Fujioka, H. Kou, H. Noumi, H. Ohnishi, H. Outa, H. Shi, H. Tatsuno, H. Yim, J. Marton, J. Zmeskal, K. Inoue, K. Itahashi, K. Kanno, K. Kato, K. Piscicchia, K. Shirotori, K. Tanida, K. Tsukada, L. Busso, M. Bragadireanu, M. Cargnelli, M. Iio, M. Iliescu, M. Iwai, M. Iwasaki, M. Sato, M. Sekimoto, M. Tokuda, O. Morra, O. Vazquez Doce, P. Buehler, P. Kienle, Q. Zhang, R. Murayama, R. S. Hayano, S. Ajimura, S. Choi, S. Enomoto, S. Ishimoto, S. Kawasaki, S. Okada, S. Suzuki, T. Fukuda, T. Hashimoto, T. Hiraiwa, T. Ishikawa, T. Nagae, T. Suzuki, T. Yamaga, T. Yamazaki, Y. Fujiwara, Y. Ishiguro, Y. Kato, Y. Ma, Y. Matsuda, Y. Mizoi, Y. Sada","submitted_at":"2024-04-02T09:35:44Z","abstract_excerpt":"We conducted measurements of $K^- + {^3{\\rm He}} \\to \\pi \\!Y \\!N + N'$ reactions using a $1~{\\rm GeV}/c$ $K^-$-beam, with the objective of understanding the broad decay width of $\\bar{K} \\!N \\!N$ (approximately twice as broad as that of $\\Lambda(1405)$ considered to be the $\\bar{K} \\!N$ quasi-bound state). We successfully reproduced distributions of the $\\pi \\! Y \\! N$ invariant mass and momentum transfer for $\\pi \\! Y \\! N$ using model fitting functions for $\\bar{K} \\!N \\!N$ formation and quasi-free $\\bar{K}$ absorption (${\\rm QF}_{\\bar{K}-{\\rm abs}}$) processes. The model can describe the ex"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.01773","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.01773/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}