{"paper":{"title":"Photoproduction ofeta-pi pairs off nucleons and deuterons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Braghieri, A. Fix, A. Kaeser, A. Mushkarenkov, A. Nikolaev, A. Polonski, A. Starostin, A. Thomas, B. Krusche, B. Oussena, D.G. Middleton, D. Hamilton, D. Hornidge, D. Howdle, D.I. Glazier, D. Mekterovic, D.M. Manley, D.P. Watts, D. Sober, D. Werthmueller, E.J. Downie, E. McNicoll, F. Mueller, F. Pheron, G.M. Huber, H.J. Arends, I. Jaegle, I.J.D. MacGregor, I. Keshelashvili, I. Supek, J. Ahrens, J.C. McGeorge, J. Mancell, J.R.M. Annand, J. Robinson, K. Bantawa, K. Livingston, L.V. Fil'kov, L. Witthauer, M. Dieterle, M.H. Sikora, M. Korolija, M. Oberle, M. Ostrick, M. Thiel, M. Unverzagt, N.K. Walford, P.A. Bartolome, P. Drexler, P. Otte, P. Pedroni, R. Beck, R. Kondratiev, R. Novotny, S. Cherepnya, S. Costanza, S. Garni, S. Micanovic, S. Prakhov, S. Schumann, T.C. Jude, Th. Strub, T. Rostomyan, V. Lisin, V.L. Kashevarov, V. Metag, W.J. Briscoe, Y. Maghrbi, Z. Marinides","submitted_at":"2016-08-26T14:40:34Z","abstract_excerpt":"Quasi-free photoproduction of $\\pi\\eta$-pairs has been investigated from threshold up to incident photon energies of 1.4 GeV, respectively up to photon-nucleon invariant masses up to 1.9 GeV. Total cross sections, angular distributions, invariant-mass distributions of the $\\pi\\eta$ and meson-nucleon pairs, and beam-helicity asymmetries have been measured for the reactions $\\gamma p\\rightarrow p\\pi^0\\eta$, $\\gamma n\\rightarrow n\\pi^0\\eta$, $\\gamma p\\rightarrow n\\pi^+\\eta$, and $\\gamma n\\rightarrow p\\pi^-\\eta$ from nucleons bound inside the deuteron. For the $\\gamma p$ initial state data for fre"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.07475","kind":"arxiv","version":1},"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"}