{"paper":{"title":"Resonance structure in the {\\gamma}{\\gamma} and $\\pi^0\\pi^0$ systems in dC interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"2), (2) Yerevan State University, (3) Institute of Applied Physics, (4) Institute of Nuclear Physics, 5), (5) Institut f\\\"ur Theoretische Physik, (6) Moscow State Institute of Radioengineering, (7) BLTP JINR, A. B. Anisimov (1), Armeniya, A. S. Sorin (7)((1) VBLHEP JINR, Automation, Electronics, Germany, Kh. U. Abraamyan (1, K. K. Gudima (3), M. A. Kozhin (1), M. A. Nazarenko (6), M. I. Baznat (3), Moldova, Moscow State University, Russia, Russia), S. G. Reznikov (1), Universit\\\"at T\\\"ubingen, V. I. Kukulin (4","submitted_at":"2012-03-19T18:33:39Z","abstract_excerpt":"Along with $\\pi^0$ and {\\eta} mesons, a resonance structure in the invariant mass spectrum of two photons at M{\\gamma}{\\gamma} = 360 \\pm 7 \\pm 9 MeV is observed in the reaction d + C \\rightarrow {\\gamma} + {\\gamma} + X at momentum 2.75 GeV/c per nucleon. Estimates of its width and production cross section are {\\Gamma} = 64 \\pm 18 MeV and $\\sigma_{\\gamma\\gamma}$ = 98 \\pm 24 {\\mu}b, respectively. The collected statistics amount to 2339 \\pm 340 events of 1.5 \\cdot 10^6 triggered interactions of a total number ~ 10^12 of dC-interactions. The results on observation of the resonance in the invariant"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.4198","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"}