{"paper":{"title":"Cosmological Bounds on sub-GeV Dark Vector Bosons from Electromagnetic Energy Injection","arxiv_id":"2003.02273","primary_cat":"hep-ph","submitted_at":"2020-03-04T19:00:01+00:00","version_compiled":"v2"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13.0 on the question bank abstract-p1-20260923, exactly as returned. 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