{"paper":{"title":"Measurement of the $^{1}H$($\\vec{\\gamma}$, $\\vec{p}$)$\\pi^{0}$ reaction using a novel nucleon spin polarimeter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A.A.Koulbardis, A.Braghieri, A.Mushkarenkov, A.Nikolaev, A.Polonski, A.Starostin, A.Thomas, B.Freehart, B.Krusche, B.McKinnon, B.M.K.Nefkens, B.Oussena, B.T.Demissie, D.Branford, D.G.Middleton, D.Hamilton, D.Hornidge, D.I.Glazier, D.I.Sober, D.Mekterovic, D.M.Manley, D.P.Watts, D.Werthm\\\"uller, E.F.McNicoll, E.Heid, E.J.Downie, F.Pheron, F.Zehr, G.Rosner, H.Bergh\\\"auser, H.J.Arends, I.I.Strakovsky, I.Jaegle, I.J.D.MacGregor, I.Keshelashvili, I.M.Suarez, I.Supek, I.Zamboni, J.Brudvik, J.C.McGeorge, J.R.M.Annand, J.Robinson, K.Bantawa, K.Livingston, L.K.Akasoy, L.V.Fil'kov, M.Korolija, M.Kotulla, M.Martinez, M.Ostrick, M.Thiel, M.Unverzagt, O.Jahn, P.Aguar-Bartolom\\'e, P.B.Otte, P.Drexler, P.Pedroni, R.Beck, R.F.B.Codling, R.Gregor, R.Kondratiev, R.L.Workman, R.Novotny, S.Cherepnya, S.Micanovic, S.P.Kruglov, S.Prakhov, S.Schumann, T.C.Jude, T.Rostomyan, V.Lisin, V.L.Kashevarov, V.Metag, V.S.Bekrenev, W.J.Briscoe, Y.Maghrbi, Z.Marinides","submitted_at":"2013-09-30T16:00:41Z","abstract_excerpt":"We report the first large-acceptance measurement of polarization transfer from a polarized photon beam to a recoiling nucleon, pioneering a novel polarimetry technique with wide application to future nuclear and hadronic physics experiments. The commissioning measurement of polarization transfer in the $^{1}H$($\\vec{\\gamma}$,$\\vec{p}$)$\\pi^{0}$ reaction in the range $0.4<E_{\\gamma}<1.4$ GeV is highly selective regarding the basic parameterizations used in partial wave analyses to extract the nucleon excitation spectrum. The new data strongly favor the recently proposed Chew-Mandelstam formalis"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.7897","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1309.7897/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"}