{"id":"W2025747162","doi":"10.1103/physrevd.80.095008","title":"Dirac neutrinos from a second Higgs doublet","year":2009,"lang":"en","type":"article","venue":"Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology","topic":"Particle physics theoretical and experimental studies","field":"Physics and Astronomy","cited_by":139,"is_retracted":false,"has_abstract":true,"ca_institutions":"Carleton University","funders":"Natural Sciences and Engineering Research Council of Canada","keywords":"Physics; Particle physics; Higgs boson; Yukawa potential; Neutrino; Standard Model (mathematical formulation); Electroweak interaction; Vacuum expectation value; Dirac (video compression format); Naturalness; Sterile neutrino; Two-Higgs-doublet model; Physics beyond the Standard Model; Lepton; Nuclear physics; Neutrino oscillation; Electron; Gauge (firearms)","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":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow"],"consensus_categories":[],"category_scores_codex":[0.0004451067,0.0008023143,0.001803413,0.00006684325,0.0005985936,0.000130536,0.000435117,0.0001511922,0.0000130203],"category_scores_gemma":[0.0001913874,0.0007100253,0.00048765,0.000606142,0.0007389911,0.0004250846,0.0001895979,0.000704995,0.0002097839],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00004003755,"about_ca_system_score_gemma":0.00007728035,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0003229833,"about_ca_topic_score_gemma":0.0000338901,"domain_scores_codex":[0.9952126,0.0007051258,0.001264515,0.001265776,0.0004557666,0.001096228],"domain_scores_gemma":[0.996583,0.001200248,0.0005140729,0.0007196059,0.0003443388,0.0006387466],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"theoretical_or_conceptual","study_design_scores_codex":[0.0002501625,0.002162182,0.04703134,0.0005953406,0.000384497,0.00002062859,0.001806795,0.000009829463,0.01798362,0.8703333,0.00728653,0.05213578],"study_design_scores_gemma":[0.001435503,0.0008268628,0.007646169,0.0005384541,0.000640207,0.000009139679,0.0002701436,0.00005562223,0.01213982,0.9724848,0.003146844,0.0008064352],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9662222,0.02244225,0.0006292406,0.009053911,0.0001964937,0.001168648,0.0001193097,0.0001029191,0.00006500858],"genre_scores_gemma":[0.984663,0.005564938,0.0003621891,0.008079153,0.0006304446,0.0004382255,0.0001968957,0.00004494458,0.00002022734],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.1021515,"threshold_uncertainty_score":0.9995351,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01825225671442472,"score_gpt":0.3214908708341388,"score_spread":0.3032386141197141,"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."}}