Search for neutrinos from decaying dark matter with IceCube

M. Aartsen (Department of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand) ; M. Ackermann (DESY, Zeuthen, 15738, Germany) ; J. Adams (Department of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand) ; J. Aguilar (Science Faculty CP230, Université Libre de Bruxelles, Brussels, 1050, Belgium) ; M. Ahlers (Niels Bohr Institute, University of Copenhagen, Copenhagen, 2100, Denmark) ; et al. - Show all 330 authors

With the observation of high-energy astrophysical neutrinos by the IceCube Neutrino Observatory, interest has risen in models of PeV-mass decaying dark matter particles to explain the observed flux. We present two dedicated experimental analyses to test this hypothesis. One analysis uses 6 years of IceCube data focusing on muon neutrino ‘track’ events from the Northern Hemisphere, while the second analysis uses 2 years of ‘cascade’ events from the full sky. Known background components and the hypothetical flux from unstable dark matter are fitted to the experimental data. Since no significant excess is observed in either analysis, lower limits on the lifetime of dark matter particles are derived: we obtain the strongest constraint to date, excluding lifetimes shorter than $$10^{28}\hbox { s}$$ 1028s at 90% CL for dark matter masses above $$10~\hbox {TeV}$$ 10TeV .

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        {
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        {
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        {
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        {
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        {
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        {
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    {
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        {
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          "value": "Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universit\u00e4t Erlangen-N\u00fcrnberg, Erlangen, 91058, Germany", 
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    {
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        {
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        {
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        {
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          "value": "Department of Physics and Astronomy, Michigan State University, East Lansing, MI, 48824, USA", 
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        {
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          "value": "Department of Physics, University of Wuppertal, Wuppertal, 42119, Germany", 
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    {
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        {
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          "value": "Department of Physics, TU Dortmund University, Dortmund, 44221, Germany", 
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      "surname": "Hoinka", 
      "given_names": "T.", 
      "full_name": "Hoinka, T."
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    {
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        {
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          "value": "Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, WI, 53706, USA", 
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    {
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        {
          "country": "USA", 
          "value": "Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, WI, 53706, USA", 
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          "value": "Department of Physics, Pennsylvania State University, University Park, PA, 16802, USA", 
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      "surname": "Huang", 
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        {
          "country": "Germany", 
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    {
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        {
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          "value": "Department of Physics, Oskar Klein Centre, Stockholm University, Stockholm, 10691, Sweden", 
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      "given_names": "K.", 
      "full_name": "Hultqvist, K."
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    {
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        {
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          "value": "Department of Physics, TU Dortmund University, Dortmund, 44221, Germany", 
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      "full_name": "H\u00fcnnefeld, M."
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    {
      "affiliations": [
        {
          "country": "USA", 
          "value": "Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, WI, 53706, USA", 
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      "given_names": "R.", 
      "full_name": "Hussain, R."
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    {
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        {
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      "surname": "In", 
      "given_names": "S.", 
      "full_name": "In, S."
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    {
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        {
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          "value": "Science Faculty CP230, Universit\u00e9 Libre de Bruxelles, Brussels, 1050, Belgium", 
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      "given_names": "N.", 
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    {
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        {
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          "value": "Department of Physics and Institute for Global Prominent Research, Chiba University, Chiba, 263-8522, Japan", 
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      "surname": "Ishihara", 
      "given_names": "A.", 
      "full_name": "Ishihara, A."
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    {
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        {
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          "value": "DESY, Zeuthen, 15738, Germany", 
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    {
      "affiliations": [
        {
          "country": "USA", 
          "value": "CTSPS, Clark-Atlanta University, Atlanta, GA, 30314, USA", 
          "organization": "Clark-Atlanta University"
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      ], 
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      "full_name": "Japaridze, G."
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    {
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        {
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        {
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    {
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        {
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        {
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        {
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        {
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    {
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        {
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    {
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        {
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        {
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          "value": "Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY, 11794-3800, USA", 
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        {
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    {
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        {
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      "full_name": "Kopper, C."
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    {
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        {
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    {
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        {
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        {
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    {
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        {
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          "value": "Physik-Department, Technische Universit\u00e4t M\u00fcnchen, Garching, 85748, Germany", 
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    {
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        {
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          "value": "Fakult\u00e4t f\u00fcr Physik und Astronomie, Ruhr-Universit\u00e4t Bochum, Bochum, 44780, Germany", 
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    {
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        {
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    {
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        {
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    {
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        {
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          "value": "Department of Physics, Drexel University, 3141 Chestnut Street, Philadelphia, PA, 19104, USA", 
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      "given_names": "N.", 
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        {
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          "value": "Department of Physics and Institute for Global Prominent Research, Chiba University, Chiba, 263-8522, Japan", 
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        {
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          "value": "Department of Physics, University of Adelaide, Adelaide, 5005, Australia", 
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        {
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    {
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        {
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          "value": "Department of Physics, Pennsylvania State University, University Park, PA, 16802, USA", 
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        {
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        {
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          "value": "Department of Physics, University of Wuppertal, Wuppertal, 42119, Germany", 
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        {
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    {
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        {
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        {
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    {
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        {
          "country": "USA", 
          "value": "Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, WI, 53706, USA", 
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    {
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        {
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          "value": "Institute of Physics, University of Mainz, Staudinger Weg 7, Mainz, 55099, Germany", 
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    {
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        {
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          "value": "Institut f\u00fcr Kernphysik, Westf\u00e4lische Wilhelms-Universit\u00e4t M\u00fcnster, M\u00fcnster, 48149, Germany", 
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    {
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        {
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          "value": "Department of Physics and Institute for Global Prominent Research, Chiba University, Chiba, 263-8522, Japan", 
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        {
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          "value": "Dienst ELEM, Vrije Universiteit Brussel (VUB), Brussels, 1050, Belgium", 
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    {
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        {
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          "value": "Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, WI, 53706, USA", 
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      "full_name": "Luszczak, W."
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        {
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          "value": "Department of Physics, University of Wisconsin, River Falls, WI, 54022, USA", 
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      "full_name": "Madsen, J."
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    {
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        {
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          "value": "Dienst ELEM, Vrije Universiteit Brussel (VUB), Brussels, 1050, Belgium", 
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    {
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        {
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          "value": "Department of Physics and Astronomy, Michigan State University, East Lansing, MI, 48824, USA", 
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    {
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        {
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          "value": "Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, WI, 53706, USA", 
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    {
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        {
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          "value": "Department of Physics, Yale University, New Haven, CT, 06520, USA", 
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      "full_name": "Maruyama, R."
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    {
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        {
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    {
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        {
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      "full_name": "Maunu, R."
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    {
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        {
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          "value": "Science Faculty CP230, Universit\u00e9 Libre de Bruxelles, Brussels, 1050, Belgium", 
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    {
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        {
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    {
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        {
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      "given_names": "T.", 
      "full_name": "Menne, T."
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    {
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        {
          "country": "USA", 
          "value": "Department of Physics and Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin, Madison, WI, 53706, USA", 
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    {
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        {
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          "value": "Science Faculty CP230, Universit\u00e9 Libre de Bruxelles, Brussels, 1050, Belgium", 
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      "given_names": "T.", 
      "full_name": "Meures, T."
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    {
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        {
          "country": "USA", 
          "value": "Department of Physics, University of California, Berkeley, CA, 94720, USA", 
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        {
          "country": "USA", 
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      "full_name": "Miarecki, S."
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    {
      "affiliations": [
        {
          "country": "USA", 
          "value": "Department of Physics and Astronomy, Michigan State University, East Lansing, MI, 48824, USA", 
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      "given_names": "J.", 
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    {
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        {
          "country": "Germany", 
          "value": "Institute of Physics, University of Mainz, Staudinger Weg 7, Mainz, 55099, Germany", 
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      "given_names": "G.", 
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    {
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  ], 
  "titles": [
    {
      "source": "Springer", 
      "title": "Search for neutrinos from decaying dark matter with IceCube"
    }
  ], 
  "dois": [
    {
      "value": "10.1140/epjc/s10052-018-6273-3"
    }
  ], 
  "publication_info": [
    {
      "page_end": "9", 
      "journal_title": "European Physical Journal C", 
      "material": "article", 
      "journal_volume": "78", 
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  "abstracts": [
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      "source": "Springer", 
      "value": "With the observation of high-energy astrophysical neutrinos by the IceCube Neutrino Observatory, interest has risen in models of PeV-mass decaying dark matter particles to explain the observed flux. We present two dedicated experimental analyses to test this hypothesis. One analysis uses 6 years of IceCube data focusing on muon neutrino \u2018track\u2019 events from the Northern Hemisphere, while the second analysis uses 2 years of \u2018cascade\u2019 events from the full sky. Known background components and the hypothetical flux from unstable dark matter are fitted to the experimental data. Since no significant excess is observed in either analysis, lower limits on the lifetime of dark matter particles are derived: we obtain the strongest constraint to date, excluding lifetimes shorter than $$10^{28}\\hbox { s}$$ <math><mrow><msup><mn>10</mn><mn>28</mn></msup><mspace width=\"0.333333em\"></mspace><mtext>s</mtext></mrow></math>  at 90% CL for dark matter masses above $$10~\\hbox {TeV}$$ <math><mrow><mn>10</mn><mspace width=\"3.33333pt\"></mspace><mtext>TeV</mtext></mrow></math> ."
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Published on:
13 November 2018
Publisher:
Springer
Published in:
European Physical Journal C , Volume 78 (2018)
Issue 10
Pages 1-9
DOI:
https://doi.org/10.1140/epjc/s10052-018-6273-3
Copyrights:
The Author(s)
Licence:
CC-BY-4.0

Fulltext files: