{"paper":{"title":"$\\omega N$ scattering length from $\\omega$ photoproduction on the proton near the threshold","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Hosaka, A. Kawano, A. Nakamura, F. Miyahara, H. Fujimura, H. Fukasawa, H. Shimizu, H. Sugai, H. Yamazaki, H.Y. Yoshida, K. Maeda, K. Mochizuki, K. Nawa, K. Okamura, K. Ozawa, K. Suzuki, M. Miyabe, M. Sato, N. Muramatsu, Q. He, R. Hashimoto, R. Yamazaki, S. Kaida, S. Kuwasaki, S. Masumoto, S. Ogushi, S. Takahashi, S.X. Nakamura, T. Ishikawa, T. Iwata, T. Sato, Y. Honda, Y. Okada, Y. Onodera, Y. Sakamoto, Y. Tajima, Y. Taniguchi, Y. Tsuchikawa","submitted_at":"2019-04-04T21:43:12Z","abstract_excerpt":"Photoproduction of the $\\omega$ meson on the proton has been experimentally studied near the threshold. The total cross sections are determined at incident energies ranging from 1.09 to 1.15 GeV. The 1/2 and 3/2 spin-averaged scattering length $a_{\\omega p}$ and effective range $r_{\\omega p}$ between the $\\omega$ meson and proton are estimated from the shape of the total cross section as a function of the incident photon energy: $a_{\\omega p} = \\left(-0.97^{+0.16_{\\rm stat}}_{-0.16_{\\rm stat}}{}^{+0.03_{\\rm syst}}_{-0.00_{\\rm syst}}\\right)+i \\left(0.07^{+0.15_{\\rm stat}}_{-0.14_{\\rm stat}}{}^{"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.02797","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/1904.02797/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"}