{"paper":{"title":"Bounding elastic photon-photon scattering at $\\sqrt s \\approx 1\\,$MeV using a laser-plasma platform","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","physics.plasm-ph"],"primary_cat":"hep-ex","authors_text":"A. Alejo, A.G.R. Thomas, A. Nurnberg, A. Seidel, B. Kettle, B. King, C. Baird, C. Colgan, C.D. Murphy, C. Gregory, C. Roedel, C. Spindloe, C. Underwood, D. Dannheim, D. Hollatz, E. Gerstmayr, F.C. Salgado, F. Roeder, G.M. Samarin, G. P\\'erez-Callejo, G. Sarri, H. Harsh, J. Hinojosa, J. Morton, J. Osterhoff, K. P\\~oder, M. Campbell, M.J.V. Streeter, M. Zepf, P. Hatfield, P.P. Rajeev, R. Watt, S. Astbury, S. Bohlen, S.J. Rose, S.P.D. Mangles, S. Steinke, W. Wu, Y. Katzir","submitted_at":"2024-07-17T18:00:03Z","abstract_excerpt":"We report on a direct search for elastic photon-photon scattering using x-ray and $\\gamma$ photons from a laser-plasma based experiment. A gamma photon beam produced by a laser wakefield accelerator provided a broadband gamma spectrum extending to above $E_\\gamma = 200$ MeV. These were collided with a dense x-ray field produced by the emission from a laser heated germanium foil at $E_x \\approx 1.4$ keV, corresponding to an invariant mass of $\\sqrt{s} = 1.22 \\pm 0.22$ MeV. In these asymmetric collisions elastic scattering removes one x-ray and one high-energy $\\gamma$ photon and outputs two low"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.12915","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2407.12915/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"}