{"id":"W4392950771","doi":"10.1103/physrevlett.132.121902","title":"First Measurement Using Elliptically Polarized Photons of the Double-Polarization Observable <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:mi>E</mml:mi></mml:math> for <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:mrow><mml:mi>γ</mml:mi><mml:mi>p</mml:mi><mml:mo stretchy=\"false\">→</mml:mo><mml:mi>p</mml:mi><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math> and <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:mrow><mml:mi>γ</mml:mi><mml:mi>p</mml:mi><mml:mo stretchy=\"false\">→</mml:mo><mml:mi>n</mml:mi><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>","year":2024,"lang":"en","type":"article","venue":"Physical Review Letters","topic":"Quantum Chromodynamics and Particle Interactions","field":"Physics and Astronomy","cited_by":3,"is_retracted":false,"has_abstract":true,"ca_institutions":"Mount Allison University; Saint Mary's University; University of Regina","funders":"Nuclear Physics; Instituto Nazionale di Fisica Nucleare; Science and Technology Facilities Council; Natural Sciences and Engineering Research Council of Canada; Deutsche Forschungsgemeinschaft; Seventh Framework Programme; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; U.S. Department of Energy; Office of Science; National Science Foundation","keywords":"Physics; Elliptical polarization; Observable; Polarization (electrochemistry); Circular polarization; Photon; Asymmetry; Helicity; Photon polarization; Linear polarization; Particle physics; Atomic physics; Optics; Quantum mechanics; Laser","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0008399003,0.0007624701,0.0005134076,0.0006992389,0.001328406,0.00131926,0.0008074905,0.002161816,0.008340683],"category_scores_gemma":[0.001439691,0.000475684,0.000548832,0.0006169328,0.001030652,0.001209579,0.001705414,0.00241427,0.002656068],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0006546726,"about_ca_system_score_gemma":0.0005175819,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00114068,"about_ca_topic_score_gemma":0.001453922,"domain_scores_codex":[0.9989269,0.0001439648,0.00002804097,0.0003447384,0.0002310992,0.0003252132],"domain_scores_gemma":[0.9988599,0.0002571403,0.00009681335,0.0003322332,0.0003113928,0.0001425761],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0008133868,0.0004214852,0.006095324,0.0002725367,0.0000965853,0.000919557,0.0005616019,0.0004095236,0.941254,0.0149821,0.01009559,0.02407829],"study_design_scores_gemma":[0.00006975378,0.0008564439,0.0126358,0.00005847454,0.0000825114,0.001172903,0.0005484452,0.002849469,0.9401539,0.002176655,0.03929925,0.00009642651],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.6569342,0.002749993,0.2017476,0.004249902,0.002847696,0.0006920509,0.003463099,0.002338875,0.1249765],"genre_scores_gemma":[0.9384038,0.0006284707,0.03847241,0.0008044466,0.0001561366,0.0001891983,0.0009077322,0.0002229188,0.02021498],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.008340683,"threshold_uncertainty_score":0.02790236,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02413183752180195,"score_gpt":0.259186085799939,"score_spread":0.2350542482781371,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}