{"paper":{"title":"Evidence for a New Resonance from Polarized Neutron-Proton Scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Erven, A. Goswami, A. Jany, A. Khoukaz, A. Kupsc, A. Magiera, A. Pricking, A. Pysniak, A. Roy, A. Szczurek, A. Taeschner, A. Trzcinski, A. Wronska, A. Yamamoto, A. Zink, B. Hoistad, B. Kamys, B. Klos, B. Lorentz, B. Marianski, B. R. Jany, C. F. Redmer, C.-O. Gullstroem, D. A. Kirrilov, D. Coderre, D. Lersch, D. Prasuhn, D. Pszczel, E. Czerwinski, E. Doroshkevich, E. Perez del Rio, E. Stephan, F. A. Khan, F. Goldenbaum, F. Hauenstein, F.S. Bergmann, G. J. Wagner, G. Kemmerling, G. Sterzenbach, H. Bhatt, H. Calen. I. Ciepa, H. Clement, H. Kleines, H. Ohm, H.-P. Morsch, H. Stockhorst, H. Stroeher, I. I. Strakovsky, I. Ozerianska, J. Ritman, J. Smyrski, J. Stepaniak, J. Zabierowski, J. Zlomanczuk, K. Demmich, K. Foehl, K. Fransson, K. Grigoyev, K. Lalwani, K. Pysz, L. Heijkenskjoeld, L. Jarczyk, L. Yurev, M. Bashkanov, M. Berlowski, M. Buescher, M. Hodana, M. J. Zielinski, M. Krapp, M. Mikirtychiants, M. Skurzok, M. Wolke, M. Zurek, N. Huesken, N. M. Piskunov, P. Adlarson, P. Fedorets, P. Goslawski, P. Kulessa, P. Marciniewski, P. Moskal, P. Podkopal, P. Wuestner, P. Wurm, P. Zupranski, R. Engels, R. L. Workman, R. Maier, R. Siudak, R. Stassen, R. Varma, S. Kistryn, S. Sawant, S. Schadmand, T. Johansson, T. Sefzick, T. Skorodko, V. Hejny, V. Serdyuk, V. Sopov, W. Augustyniak, W. Bardan, W. Erven, W. Eyrich, W. J. Briscoe, W. Krzemien, Z. Rudy","submitted_at":"2014-02-27T10:12:21Z","abstract_excerpt":"Exclusive and kinematically complete high-statistics measurements of quasifree polarized $\\vec{n}p$ scattering have been performed in the energy region of the narrow resonance structure $d^*$ with $I(J^P) = 0(3^+)$, $M \\approx$ 2380 MeV/$c^2$ and $\\Gamma \\approx$ 70 MeV observed recently in the double-pionic fusion channels $pn \\to d\\pi^0\\pi^0$ and $pn \\to d\\pi^+\\pi^-$. The experiment was carried out with the WASA detector setup at COSY having a polarized deuteron beam impinged on the hydrogen pellet target and utilizing the quasifree process $\\vec{d}p \\to np + p_{spectator}$. That way the $np"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.6844","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"}