{"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":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0002973526,0.0004302422,0.0004937007,0.0003077179,0.0004716224,0.001185428,0.0005817816,0.0009944371,0.001522262],"category_scores_gemma":[0.000361778,0.0002046195,0.0005316008,0.0001780401,0.0006719243,0.00103776,0.001060762,0.001166706,0.000787036],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0004300821,"about_ca_system_score_gemma":0.0006873223,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0003556116,"about_ca_topic_score_gemma":0.0004623677,"domain_scores_codex":[0.9998976,0.00001706894,0.000006102113,0.00002246372,0.00004190049,0.00001481381],"domain_scores_gemma":[0.9999011,0.00002272747,0.00001934391,0.00002321275,0.0000185073,0.00001525329],"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":[0.0001151025,0.00004016434,0.001133315,0.0003227428,0.00003116146,0.001034811,0.0001232999,0.001178842,0.02075026,0.9429829,0.004196055,0.02809143],"study_design_scores_gemma":[0.00007699379,0.0001331326,0.0008148748,0.0001216949,0.00004555197,0.003341834,0.0001266395,0.003422857,0.01027276,0.8653939,0.1162183,0.00003149439],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.4367471,0.06936315,0.1804358,0.03506364,0.007697924,0.0001603208,0.0005785648,0.0007046612,0.2692489],"genre_scores_gemma":[0.9083976,0.015929,0.03086176,0.00391013,0.001246391,0.0001006865,0.0002945235,0.00003307722,0.03922688],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.001522262,"threshold_uncertainty_score":0.005092502,"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."}}