Combined Dark Matter searches towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, HESS, MAGIC and VERITAS

Oakes, Louise; Armand, Celine; Charles, Eric; di Mauro, Mattia; Giuri, Chiara; Harding, James Patrick; Kerszberg, Daniel; Miener, Tjark; Moulin, Emmanuel; Poireau, Vincent; Pueschel, Elisa; Rico, Javier; Rinchiuso, Lucia; Salazar-Gallegos, Daniel; Tollefson, Kirsten; Zitzer, Benjamin

doi:10.22323/1.358.0012

Title: Combined Dark Matter searches towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, HESS, MAGIC and VERITAS

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Abstract

The search for Dark Matter (DM) has great potential to reveal physics beyond the Standard Model. As such, searches for evidence of DM particles are being carried out using a wide range of techniques, such as direct searches for DM particles, searches for DM produced with colliders, and indirect searches for the Standard Model annihilation products of DM. Dwarf spheroidal galaxies (dSphs) are excellent targets for indirect Dark Matter searches due to their relatively high DM content and negligible expected astrophysical background. A collaboration was formed to maximise the sensitivity of DM searches towards dSphs by combining for the first time dSph data from three imaging air Cherenkov telescope (IACT) arrays: HESS, MAGIC, and VERITAS; the Fermi-LAT satellite, and the water Cherenkov detector HAWC. Due to the diverse nature of the instruments involved, each experiment will analyse their individual datasets from multiple targets and then the results will be combined at the likelihood level. For consistency of the likelihoods across the five experiments, a common approach is used to treat the astrophysical factor (J-Factor) for each target and an agreed set of annihilation channels are considered. We also agree on a com- mon statistical approach and treatment of instrumental systematicmore »« less

Authors:

Oakes, Louise ^[1]; Armand, Celine ^[2]; Charles, Eric ^[3]; di Mauro, Mattia ^[3]; Giuri, Chiara ^[4];

^[5]; Kerszberg, Daniel ^[6]; Miener, Tjark ^[7]; Moulin, Emmanuel ^[8]; Poireau, Vincent ^[9]; Pueschel, Elisa ^[10]; Rico, Javier ^[6]; Rinchiuso, Lucia ^[8]; Salazar-Gallegos, Daniel ^[11]; Tollefson, Kirsten ^[11]; Zitzer, Benjamin ^[12]

Humboldt Univ. of Berlin (Germany)
Centre National de la Recherche Scientifique (CNRS), LAPP, LAPTh, Annecy-le-Vieux (France)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Institute for High Energy Physics (IFAE)-Barcelona Institute of Science and Technology (BIST), Barcelona (Spain)
Univ. Complutense Madrid (Spain). Institute of Particle and Cosmos Physics (IPARCOS)
Alternative Energies and Atomic Energy Commission (CEA), Saclay (France)
Laboratoire d’Annecy de Physique des Particules (LAPP), Annecy (France)
Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany)
Michigan State Univ., East Lansing, MI (United States)
McGill Univ., Montreal, QC (Canada)

Publication Date:: Fri Aug 30 00:00:00 EDT 2019

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE Office of Science (SC). High Energy Physics (HEP)

Contributing Org.:: Fermi-LAT Collaboration; HAWC Collaboration; H.E.S.S. Collaboration; MAGIC Collaboration; Veritas Collaboration

OSTI Identifier:: 1804379

Report Number(s):: LA-UR-21-22663
Journal ID: ISSN 1824-8039; TRN: US2212280

Grant/Contract Number:: 89233218CNA000001

Resource Type:: Accepted Manuscript

Journal Name:: PoS - Proceedings of Science

Additional Journal Information:: Journal Volume: 358; Conference: 36. International Cosmic Ray Conference , Madison, WI (United States), 24 Jul - 1 Aug 2019; Journal ID: ISSN 1824-8039

Publisher:: SISSA

Country of Publication:: United States

Language:: English

Subject:: 79 ASTRONOMY AND ASTROPHYSICS; Astronomy and Astrophysics

Citation Formats


                    Oakes, Louise, Armand, Celine, Charles, Eric, di Mauro, Mattia, Giuri, Chiara, Harding, James Patrick, Kerszberg, Daniel, Miener, Tjark, Moulin, Emmanuel, Poireau, Vincent, Pueschel, Elisa, Rico, Javier, Rinchiuso, Lucia, Salazar-Gallegos, Daniel, Tollefson, Kirsten, and Zitzer, Benjamin. Combined Dark Matter searches towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, HESS, MAGIC and VERITAS.  United States: N. p., 2019. 
Web.  doi:10.22323/1.358.0012.

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                    Oakes, Louise, Armand, Celine, Charles, Eric, di Mauro, Mattia, Giuri, Chiara, Harding, James Patrick, Kerszberg, Daniel, Miener, Tjark, Moulin, Emmanuel, Poireau, Vincent, Pueschel, Elisa, Rico, Javier, Rinchiuso, Lucia, Salazar-Gallegos, Daniel, Tollefson, Kirsten, & Zitzer, Benjamin. Combined Dark Matter searches towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, HESS, MAGIC and VERITAS.  United States.  https://doi.org/10.22323/1.358.0012

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                    Oakes, Louise, Armand, Celine, Charles, Eric, di Mauro, Mattia, Giuri, Chiara, Harding, James Patrick, Kerszberg, Daniel, Miener, Tjark, Moulin, Emmanuel, Poireau, Vincent, Pueschel, Elisa, Rico, Javier, Rinchiuso, Lucia, Salazar-Gallegos, Daniel, Tollefson, Kirsten, and Zitzer, Benjamin. Fri .  
"Combined Dark Matter searches towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, HESS, MAGIC and VERITAS".  United States.  https://doi.org/10.22323/1.358.0012.  https://www.osti.gov/servlets/purl/1804379.

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@article{osti_1804379,

  title        = {Combined Dark Matter searches towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, HESS, MAGIC and VERITAS},

  author       = {Oakes, Louise and Armand, Celine and Charles, Eric and di Mauro, Mattia and Giuri, Chiara and Harding, James Patrick and Kerszberg, Daniel and Miener, Tjark and Moulin, Emmanuel and Poireau, Vincent and Pueschel, Elisa and Rico, Javier and Rinchiuso, Lucia and Salazar-Gallegos, Daniel and Tollefson, Kirsten and Zitzer, Benjamin},

  abstractNote = {The search for Dark Matter (DM) has great potential to reveal physics beyond the Standard Model. As such, searches for evidence of DM particles are being carried out using a wide range of techniques, such as direct searches for DM particles, searches for DM produced with colliders, and indirect searches for the Standard Model annihilation products of DM. Dwarf spheroidal galaxies (dSphs) are excellent targets for indirect Dark Matter searches due to their relatively high DM content and negligible expected astrophysical background. A collaboration was formed to maximise the sensitivity of DM searches towards dSphs by combining for the first time dSph data from three imaging air Cherenkov telescope (IACT) arrays: HESS, MAGIC, and VERITAS; the Fermi-LAT satellite, and the water Cherenkov detector HAWC. Due to the diverse nature of the instruments involved, each experiment will analyse their individual datasets from multiple targets and then the results will be combined at the likelihood level. For consistency of the likelihoods across the five experiments, a common approach is used to treat the astrophysical factor (J-Factor) for each target and an agreed set of annihilation channels are considered. We also agree on a com- mon statistical approach and treatment of instrumental systematic uncertainties. The results are presented in terms of constraints on the velocity-weighted cross section for DM self-annihilation as a function of the DM particle mass.},

  doi          = {10.22323/1.358.0012},

  journal      = {PoS - Proceedings of Science},

  number       = ,

  volume       = 358,

  place        = {United States},

  year         = {Fri Aug 30 00:00:00 EDT 2019},

  month        = {Fri Aug 30 00:00:00 EDT 2019}

}

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