{"paper":{"title":"Improved Heavy Dark Matter Annihilation Search from Dwarf Galaxies with HAWC","license":"http://creativecommons.org/licenses/by/4.0/","headline":"HAWC sets upper limits on heavy dark matter annihilation from dwarf galaxies at 10^{-23} cm³ s^{-1}.","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Albert, A. Andr\\'es, A. Bernal, A. Carrami\\~nana, A. Galv\\'an-G\\'amez, A. Gonzalez Mu\\~noz, A. Iriarte, A.J. Smith, A.L. Colmenero-Cesar, A.L. Longinotti, A. Nayerhoda, A. Rodriguez Parra, A. Sandoval, C. Alvarez, C. de Le\\'on, C.D. Rho, C. Espinoza, C. Lundy, D. Avila Rojas, D. Huang, D. Kieda, D. Rosa-Gonz\\'alez, D. Salazar-Gallegos, E. Anita-Rangel, E. Belmont-Moreno, E. De la Fuente, E.G. P\\'erez-P\\'erez, E. Moreno, E. Ponce, E. Varela, F. Carre\\'on, F. Garfias, F. Hueyotl-Zahuantitla, F. Ure\\~na-Mena, G. Luis-Raya, H.A. Ayala Solares, H. Le\\'on Vargas, H. Mart\\'inez-Huerta, H. Salazar, H. Wu, H. Zhou, I. Herzog, I.J. Watson, I. Torres, J.A. Garc\\'ia-Gonz\\'alez, J.A. Gonz\\'alez, J.A. Goodman, J.A. Matthews, J.A. Morales-Soto, J.C. Arteaga-Vel\\'azquez, J.C. D\\'iaz-V\\'elez, J. Cotzomi, J. Gyeong, J. Lee, J. Mart\\'inez-Castro, J.P. Harding, J. Serna-Franco, J.T. Linnemann, K. Engel, K. Leavitt, K. Malone, K.S. Caballero-Mora, K. Tollefson, L. Nellen, L. Villase\\~nor, M.A. DuVernois, M. Araya, M.M. Gonz\\'alez, M. Mostaf\\'a, M. Najafi, M. Roth, M. Schneider, M. Shin, M.U. Nisa, N. Di Lalla, N. Fraija, N. Ghosh, N. Omodei, O. Martinez, O. Tibolla, P. Bangale, P. Desiati, P.E. Mir\\'on-Enriquez, P. H\\\"untemeyer, P. Miranda-Romagnoli, R. Alfaro, R. Babu, R. Diaz Hernandez, R. Noriega-Papaqui, R. Torres-Escobedo, R.W. Springer, S. Casanova, S. Couti\\~no de Le\\'on, S. Fraija, S. Hern\\'andez-Cadena, S. Kaufmann, S. Yu, T. Capistr\\'an, T. Ergin, U. Cotti, W.H. Lee, X. Wang, X. Zhang, Y. P\\'erez Araujo, Y. Son, Z. Wang","submitted_at":"2026-02-05T18:09:58Z","abstract_excerpt":"Understanding dark matter's elusive nature is crucial for the framework of particle physics and expanding the Standard Model. This analysis utilizes the High Altitude Water Cherenkov (HAWC) gamma ray Observatory to indirectly search for dark matter (DM) by studying gamma ray emission from dwarf spheroidal galaxies (dSphs). Selected for their high ratio of dark matter to baryonic matter, dSphs are useful for this type of search owing to the low background emission. In comparison to previous HAWC studies, we significantly improve our sensitivity to DM from dSphs due to improvements to our event "},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We report that we do not detect evidence of DM from dSphs, so we place upper limits for the velocity-weighted DM annihilation cross-section (⟨σv⟩) on the order of 10^{-23} cm³s^{-1} for a DM mass range of 1-10^4 TeV.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The analysis assumes that the selected dwarf spheroidal galaxies have the expected high dark matter density profiles with negligible astrophysical gamma-ray backgrounds and that the annihilation channels into Standard Model particles are modeled correctly.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"No dark matter annihilation signal is detected from dwarf galaxies; upper limits on the velocity-weighted cross-section are set at order 10^{-23} cm^3 s^{-1} for DM masses 1-10^4 TeV.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"HAWC sets upper limits on heavy dark matter annihilation from dwarf galaxies at 10^{-23} cm³ s^{-1}.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"94a4ccf3fb76a1f59ad934a8ccd82f8bbb0a9d3c6bf4b9959e1acbabcf0c4c5f"},"source":{"id":"2602.05955","kind":"arxiv","version":2},"verdict":{"id":"665153f3-2241-4cdc-9547-1943b1f023bf","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-16T06:45:52.956914Z","strongest_claim":"We report that we do not detect evidence of DM from dSphs, so we place upper limits for the velocity-weighted DM annihilation cross-section (⟨σv⟩) on the order of 10^{-23} cm³s^{-1} for a DM mass range of 1-10^4 TeV.","one_line_summary":"No dark matter annihilation signal is detected from dwarf galaxies; upper limits on the velocity-weighted cross-section are set at order 10^{-23} cm^3 s^{-1} for DM masses 1-10^4 TeV.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The analysis assumes that the selected dwarf spheroidal galaxies have the expected high dark matter density profiles with negligible astrophysical gamma-ray backgrounds and that the annihilation channels into Standard Model particles are modeled correctly.","pith_extraction_headline":"HAWC sets upper limits on heavy dark matter annihilation from dwarf galaxies at 10^{-23} cm³ s^{-1}."},"references":{"count":20,"sample":[{"doi":"","year":2018,"title":"G. Bertone and D. Hooper,History of dark matter,Rev. Mod. Phys.90(2018) 045002","work_id":"4e1e874e-09e3-4f81-be01-92d2b4df6089","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2013,"title":"Strigari,Galactic searches for dark matter,Physics Reports531(2013) 1","work_id":"e672bb71-e808-4b51-84f8-dd0289d0cd9c","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2016,"title":"M.G. Baring, T. Ghosh, F.S. Queiroz and K. Sinha,New limits on the dark matter lifetime from dwarf spheroidal galaxies using fermi-lat,Phys. Rev. D93(2016) 103009. [4]HA WCcollaboration,The high-altit","work_id":"bd841321-c3b9-4a2c-8bdd-4c865fcd3018","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2018,"title":"A. Albert, R. Alfaro, C. Alvarez, J.D. ´Alvarez, R. Arceo, J.C. Arteaga-Vel´ azquez et al.,Dark matter limits from dwarf spheroidal galaxies with the HAWC gamma-ray observatory,The Astrophysical Journ","work_id":"c2726601-db36-41b8-aa53-02ef2ca85b40","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2015,"title":"A. Geringer-Sameth, S.M. Koushiappas and M. Walker,Dwarf galaxy annihilation and decay emission profiles for dark matter experiments,The Astrophysical Journal801(2015) 74","work_id":"8580b74e-6af3-4583-9bde-6c27862cddf1","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":20,"snapshot_sha256":"21cd2dbe6c995d85e2e0dfca4efd6fbcca82e253bacd512d2ad8219c92e48c24","internal_anchors":2},"formal_canon":{"evidence_count":2,"snapshot_sha256":"8e0b811d49f0eb9a25992dd1d428a3558c39697752de542e6d02034d447536ef"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}