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An optimized search for dark matter in the galactic halo with HAWC

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arxiv 2305.09861 v1 pith:DREZCWCL submitted 2023-05-17 astro-ph.HE astro-ph.COastro-ph.IMhep-ph

A. Albert , R. Alfaro , C. Alvarez , J.C. Arteaga-Velazquez , D. Avila Rojas , H.A. Ayala Solares , E. Belmont-Moreno , K.S. Caballero-Mora
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T. Capistran A. Carraminana S. Casanova O. Chaparro-Amaro U. Cotti J. Cotzomi E. De la Fuente R. Diaz Hernandez B.L. Dingus M.A. DuVernois M. Durocher J.C. D{i}az-Velez C. Espinoza K.L. Fan N. Fraija J.A. Garc{i}a-Gonzalez F. Garfias M.M. Gonzalez J.A. Goodman J.P. Harding D. Huang F. Hueyotl-Zahuantitla A. Iriarte V. Joshi G.J. Kunde J. Lee H. Leon Vargas J.T. Linnemann A.L. Longinotti G. Luis-Raya J. Lundeen K. Malone O. Martinez J. Mart{i}nez-Castro J.A. Matthews E. Moreno M. Mostafa A. Nayerhoda L. Nellen A. Peisker E.G. Perez-Perez C.D. Rho D. Rosa-Gonzalez H. Salazar D. Salazar-Gallegos A. Sandoval J. Serna-Franco R.W. Springer O. Tibolla K. Tollefson I. Torres R. Torres-Escobedo R. Turner F. Urena-Mena L. Villasenor X. Wang H. Zhou C. de Leon
This is my paper · ORCID
classification astro-ph.HEastro-ph.COastro-ph.IMhep-ph
keywords darkhawcmattergalactichalocherenkovconstraintsextended
verification ladder T0 review T1 audit T2 compute T3 formal
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The Galactic Halo is a key target for indirect dark matter detection. The High Altitude Water Cherenkov (HAWC) observatory is a high-energy (~300 GeV to >100 TeV) gamma-ray detector located in central Mexico. HAWC operates via the water Cherenkov technique and has both a wide field of view of 2 sr and a >95% duty cycle, making it ideal for analyses of highly extended sources. We made use of these properties of HAWC and a new background-estimation technique optimized for extended sources to probe a large region of the Galactic Halo for dark matter signals. With this approach, we set improved constraints on dark matter annihilation and decay between masses of 10 and 100 TeV. Due to the large spatial extent of the HAWC field of view, these constraints are robust against uncertainties in the Galactic dark matter spatial profile.

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Cited by 3 Pith papers

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  1. The potential of diffuse Galactic Ridge neutrino measurements to constrain dark matter

    astro-ph.HE 2026-05 unverdicted novelty 6.0 of 10

    ANTARES Galactic Ridge upper limits yield competitive dark-matter annihilation/decay bounds, the first neutrino-based branon constraints, and a negative KM3NeT forecast for the thermal relic cross-section.

  2. Constraints on Ultra-heavy DM from TeV-PeV gamma-ray diffuse measurements

    astro-ph.HE 2025-09 conditional novelty 5.0 of 10

    HAWC and LHAASO diffuse gamma-ray data, modeled with prompt, inverse-Compton, absorption, and astrophysical background, produce the strongest constraints on decaying ultra-heavy dark matter above ~100 TeV.

  3. Dark Matter Freeze-In during Warm Inflation and the Seesaw Mechanism

    hep-ph 2024-12 conditional novelty 4.0 of 10

    A U(1)_{B-L} inverse-seesaw model realizes warm-inflation freeze-in of fermionic dark matter via a heavy Z' portal, with parameters adjusted to match the observed dark matter abundance and neutrino masses.

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