{"paper":{"title":"Technical Design Report for the Paul Scherrer Institute Experiment R-12-01.1: Studying the Proton \"Radius\" Puzzle with {\\mu}p Elastic Scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Afanasev, A. Akmal, A. Blomberg, A. Golossanov, A. Liyanage, A. Richter, A. Sarty, A.S. Tadepalli, B. Dongwi, B. Krusche, C. Ayerbe-Gayoso, C. Collicott, D. Cioffi, D. Cohen, D. Ghosal, D. Higinbotham, D. Hornidge, D. Reggiani, E. Cline, E.J. Downie, E. O. Cohen, E. Piasetzsky, F. Benmokhtar, G. Kumbartzki, G. Ron, H. Atac, I. Lavrukhin, I. Strakovsky, J. Arrington, J. Bernauer, J. Diefenbach, J. Lichtenstadt, J. Nazeer, K. Deiters, K. E. Mesick, L. Li, M. Kohl, M. Taragin, N. Benmouna, N. Kalantarians, N. Sparveris, N. Steinberg, P.E. Reimer, P. MohanMurthy, P. Moran, P. Roy, R. Gilman, R. Gothe, R. Ransome, R. Raymond, S. Strauch, T. Rostomyan, V. Sulkosky, W. J. Briscoe, W. Lin, W. Lorenzon, Y. Ilieva, Y. Shamai, Z.-E. Meziani","submitted_at":"2017-09-27T22:52:55Z","abstract_excerpt":"The difference in proton radii measured with $\\mu p$ atoms and with $ep$ atoms and scattering remains an unexplained puzzle. The PSI MUSE proposal is to measure $\\mu p$ and $e p$ scattering in the same experiment at the same time. The experiment will determine cross sections, two-photon effects, form factors, and radii independently for the two reactions, and will allow $\\mu p$ and $ep$ results to be compared with reduced systematic uncertainties. These data should provide the best test of lepton universality in a scattering experiment to date, about an order of magnitude improvement over prev"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.09753","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"}