{"paper":{"title":"Differential cross section and photon beam asymmetry for the gamma p -> pi+ n reaction at forward pi+ angles at Egamma=1.5-2.95 GeV","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Hosaka, C. Rangacharyulu, D.S. Ahn, H. Ejiri, H. Fujimura, H. Kohri, H. Noumi, H. Shimizu, H.S. Lee, J.D. Parker, J.K. Ahn, J.Y. Chen, K. Hicks, K. Imai, K. Joo, M. Fujiwara, M. Miyabe, M. Niiyama, M. Oka, M. Sumihama, M. Uchida, M. Ungaro, M. Yosoi, N. Muramatsu, S. Date, S. Fukui, S.H. Hwang, S.H. Kim, S.H. Shiu, S.Y. Ryu, S.Y. Wang, T. Hotta, T. Ishikawa, T. Mibe, T. Nakano, T. Ohta, T. Sawada, T. Tsunemi, W.C. Chang, W. Gohn, Y. Kato, Y. Kon, Y. Maeda, Y. Morino, Y. Nakatsugawa, Y. Oh, Y. Ohashi, Y. Sugaya, Y. Yanai","submitted_at":"2017-08-31T06:03:21Z","abstract_excerpt":"Differential cross sections and photon beam asymmetries for the gamma p -> pi+ n reaction have been measured for 0.6<cos(theta)<1 and Egamma=1.5-2.95 GeV at SPring-8/LEPS. The cross sections monotonically decrease as the photon beam energy increases for 0.6<cos(theta)<0.9. However, the energy dependence of the cross sections for 0.9<cos(theta)<1 and Egamma=1.5-2.2 GeV (W=1.9-2.2 GeV) is different, which may be due to a nucleon or Delta resonance. The present cross sections agree well with the previous cross sections measured by other groups and show forward peaking, suggesting significant t-ch"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09574","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"}