A Search for Dark Matter in the Galactic Halo with HAWC
Creators: name: Abeysekara, A. U.
name: Albert, A. M.
name: Alfaro, R.
name: Alvarez, C.
name: Álvarez, J. D.
name: Arceo, R.
name: Arteaga-Velázquez, J. C.
name: Rojas, D. Avila
name: Solares, H. A. Ayala
name: Becerril, A.
name: Belmont-Moreno, E.
name: BenZvi, S. Y.
name: Bernal, A.
name: Brisbois, C.
name: Caballero-Mora, K. S.
name: Capistrán, T.
name: Carramiñana, A.
name: Casanova, S.
name: Castillo, M.
name: Cotti, U.
name: Cotzomi, J.
name: De León, C.
name: De la Fuente, E.
name: Hernandez, R. Diaz
name: Dingus, B. L.
name: DuVernois, M. A.
name: Díaz-Vélez, J. C.
name: Engel, K.
name: Enríquez-Rivera, O.
name: Fiorino, D. W.
name: Fleischhack, H.
name: Fraija, N.
name: García-González, J. A.
name: Garfias, F.
name: Muñoz, A. González
name: González, M. M.
name: Goodman, J. A.
name: Hampel-Arias, Z.
name: Harding, J. P.
name: Hernandez, S.
name: Hernandez-Almada, A.
name: Hueyotl-Zahuantitla, F.
name: Hüntemeyer, P.
name: Iriarte, A.
name: Jardin-Blicq, A.
name: Joshi, V.
name: Kaufmann, S.
name: Lauer, R. J.
name: Lee, W. H.
name: Lennarz, D.
name: Vargas, H. León
name: Linnemann, J. T.
name: Longinotti, A. L.
name: Luis-Raya, G.
name: Luna-García, R.
name: López-Coto, R.
name: Malone, K.
name: Marinelli, S. S.
name: Martinez, O.
name: Martinez-Castellanos, I.
name: Martínez-Castro, J.
name: Matthews, J. A.
name: Miranda-Romagnoli, P.
name: Moreno, E.
name: Mostafá, M.
name: Nellen, L.
name: Newbold, M.
name: Nisa, M. U.
name: Noriega-Papaqui, R.
name: Pelayo, R.
name: Pretz, J.
name: Pérez-Pérez, E. G.
name: Ren, Z.
name: Rho, C. D.
name: Rodd, N. L.
name: Rosa-González, D.
name: Rosenberg, M.
name: Ruiz-Velasco, E.
name: Safdi, B. R.
name: Salazar, H.
name: Greus, F. Salesa
name: Sandoval, A.
name: Schneider, M.
name: Sinnis, G.
name: Smith, A. J.
name: Springer, R. W.
name: Surajbali, P.
name: Taboada, I.
name: Tibolla, O.
name: Tollefson, K.
name: Torres, I.
name: Ukwatta, T. N.
name: Vianello, G.
name: Villaseñor, L.
name: Weisgarber, T.
name: Westerhoff, S.
name: Wisher, I. G.
name: Wood, J.
name: Yapici, T.
name: Yodh, G. B.
name: Younk, P. W.
name: Zepeda, A.
name: Zhou, H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a wide field-of-view observatory sensitive to 500 GeV - 100 TeV gamma rays and cosmic rays. With its observations over 2/3 of the sky every day, the HAWC observatory is sensitive to a wide variety of astrophysical sources, including possible gamma rays from dark matter. Dark matter annihilation and decay in the Milky Way Galaxy should produce gamma-ray signals across many degrees on the sky. The HAWC instantaneous field-of-view of 2 sr enables observations of extended regions on the sky, such as those from dark matter in the Galactic halo. Here we show limits on the dark matter annihilation cross-section and decay lifetime from HAWC observations of the Galactic halo with 15 months of data. These are some of the most robust limits on TeV and PeV dark matter, largely insensitive to the dark matter morphology. These limits begin to constrain models in which PeV IceCube neutrinos are explained by dark matter which primarily decays into hadrons.
description: 24 pages, 11 figures