{"paper":{"title":"Resolving the Hubble tension in a U(1)$_{L_\\mu-L_\\tau}$ model with Majoron","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Joe Sato, Kei Honda, Kento Asai, Masaki J.S. Yang, Ryuta Kasuya, Takashi Shimomura, Takeshi Araki","submitted_at":"2021-03-12T09:35:37Z","abstract_excerpt":"In this paper, we explore possibilities of resolving the Hubble tension and $(g-2)_{\\mu}$ anomaly simultaneously in a U(1)$_{L_\\mu - L_\\tau}$ model with Majoron. We only focus on a case where the Majoron $\\phi$ does not exist at the beginning of the universe and is created by neutrino inverse decay $\\nu\\nu\\to \\phi$ after electron-positron annihilation. In this case, contributions of the new gauge boson $Z'$ and Majoron $\\phi$ to the effective number of neutrino species $N_{\\rm eff}$ can be calculated in separate periods. These contribution are labelled $N'_{\\rm eff}$ for the U(1)$_{L_\\mu - L_\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.07167","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2103.07167/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}