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

Journal Article · · Journal of Cosmology and Astroparticle Physics
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  1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
  2. Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Inst. de Fisica
  3. Univ. Nacional Autonoma de Chiapas, Tuxtla Gutiérrez (Mexico)
  4. Universidad Michoacana de San Nicolás de Hidalgo, Morelia (Mexico)
  5. Pennsylvania State Univ., University Park, PA (United States)
  6. Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Instituto de Astronomía
  7. Instituto Nacional de Astrofísica, Óptica y Electrónica, Puebla (Mexico)
  8. Polish Academy of Sciences (PAS), Krakow (Poland). Institute of Nuclear Physics
  9. Instituto Politécnico Nacional, Mexico City (Mexico). Centro de Investigación en Computación
  10. Benemérita Universidad Autónoma de Puebla (Mexico)
  11. Univ. de Guadalajara (Mexico). Centro Universitario de Ciencias Exactase Ingenierias
  12. Univ. of Wisconsin, Madison, WI (United States)
  13. Univ. of Maryland, College Park, MD (United States)
  14. Escuela de Ingeniería y Ciencias, Monterrey (Mexico)
  15. Michigan Technological Univ., Houghton, MI (United States)
  16. Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen (Germany). Erlangen Centre for Astroparticle Physics
  17. University of Seoul (South Korea)
  18. Michigan State Univ., East Lansing, MI (United States)
  19. Universidad Politecnica de Pachuca (Mexico)
  20. Univ. of New Mexico, Albuquerque, NM (United States)
  21. Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Instituto de Ciencias Nucleares
  22. Univ. of Utah, Salt Lake City, UT (United States)
  23. Shanghai Jiao Tong Univ. (China). Tsung-Dao Lee Institute
+ Show Author Affiliations

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.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), High Energy Physics (HEP); Consejo Nacional de Ciencia y Tecnología (CONACyT); DGAPA-UNAM; Polish Science Centre
Grant/Contract Number:
89233218CNA000001
OSTI ID:
2406567
Report Number(s):
LA-UR--23-25315
Journal Information:
Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 12 Vol. 2023; ISSN 1475-7516
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (18)

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Table 1(p. 7)table Table 1
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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
cosmic ray experiments
dark matter detectors
dark matter experiments
gamma ray experiments