Search for Dark Matter Annihilation in the Galactic Halo using IceCube
The existence of dark matter has by now been demonstrated to such a de- gree that the next step is to understand what actually constitute this unknown gravitational mass. The total amount of matter in the universe cannot be explained without the introduction of a particle beyond the Standard Model,...
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The Niels Bohr Institute, Faculty of Science, University of Copenhagen
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ftcopenhagenunip:oai:pure.atira.dk:publications/b40eb850-e5d5-4d2e-9c10-80d852cd1f53 2023-05-15T18:23:17+02:00 Search for Dark Matter Annihilation in the Galactic Halo using IceCube Medici, Morten Ankersen 2016 https://curis.ku.dk/portal/da/publications/search-for-dark-matter-annihilation-in-the-galactic-halo-using-icecube(b40eb850-e5d5-4d2e-9c10-80d852cd1f53).html https://soeg.kb.dk/permalink/45KBDK_KGL/fbp0ps/alma99122096844605763 eng eng The Niels Bohr Institute, Faculty of Science, University of Copenhagen info:eu-repo/semantics/closedAccess Medici , M A 2016 , Search for Dark Matter Annihilation in the Galactic Halo using IceCube . The Niels Bohr Institute, Faculty of Science, University of Copenhagen . < https://soeg.kb.dk/permalink/45KBDK_KGL/fbp0ps/alma99122096844605763 > book 2016 ftcopenhagenunip 2021-09-23T17:57:22Z The existence of dark matter has by now been demonstrated to such a de- gree that the next step is to understand what actually constitute this unknown gravitational mass. The total amount of matter in the universe cannot be explained without the introduction of a particle beyond the Standard Model, and with the right properties of this hypothesized particle, it is possible to look for a signal from dark matter annihilation. In this work, the dark matter particle candidate of weakly interacting massive particles shall be presented, and the possibilities of observing it’s self-annihilation to neutrinos shall be pursued with the IceCube Neutrino Observatory located in the dark clear ice deep underneath the South Pole. An in ll to IceCube with a denser instrumentation allows the detection of neutrinos with energies down to 10 GeV. By using this sub-detector as the ducial volume, and the rest of IceCube as a veto detector for atmospheric muons it is possible to search for a neutrino signals form the center of the Milky Way located on the souther hemisphere. In this thesis, a complete analysis is carried out on data from 1004 days of IceCube data, looking for an excess of neutrinos consistent with the dark matter halo of the Milky Way over a uniform atmospheric background. No signi cant excess is ob- served, and constraints are presented for the thermally averaged product of the self-annihilation cross-section and the relative speed ⟨휎푣⟩, which for the annihilation of a 100 GeV WIMP through 푊+푊−, result in a limit at ⟨휎푣⟩ = 3.84 · 10−23cm3s−1. The result of the present analysis improves the previous IceCube limits below masses of weakly interacting massive particles of 500 GeV and constitute current world leading results of weakly interacting massive particles annihilting to neutrino for masses between 50 and 200 GeV. Book South pole University of Copenhagen: Research Milky Way ENVELOPE(-68.705,-68.705,-71.251,-71.251) South Pole |
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University of Copenhagen: Research |
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ftcopenhagenunip |
language |
English |
description |
The existence of dark matter has by now been demonstrated to such a de- gree that the next step is to understand what actually constitute this unknown gravitational mass. The total amount of matter in the universe cannot be explained without the introduction of a particle beyond the Standard Model, and with the right properties of this hypothesized particle, it is possible to look for a signal from dark matter annihilation. In this work, the dark matter particle candidate of weakly interacting massive particles shall be presented, and the possibilities of observing it’s self-annihilation to neutrinos shall be pursued with the IceCube Neutrino Observatory located in the dark clear ice deep underneath the South Pole. An in ll to IceCube with a denser instrumentation allows the detection of neutrinos with energies down to 10 GeV. By using this sub-detector as the ducial volume, and the rest of IceCube as a veto detector for atmospheric muons it is possible to search for a neutrino signals form the center of the Milky Way located on the souther hemisphere. In this thesis, a complete analysis is carried out on data from 1004 days of IceCube data, looking for an excess of neutrinos consistent with the dark matter halo of the Milky Way over a uniform atmospheric background. No signi cant excess is ob- served, and constraints are presented for the thermally averaged product of the self-annihilation cross-section and the relative speed ⟨휎푣⟩, which for the annihilation of a 100 GeV WIMP through 푊+푊−, result in a limit at ⟨휎푣⟩ = 3.84 · 10−23cm3s−1. The result of the present analysis improves the previous IceCube limits below masses of weakly interacting massive particles of 500 GeV and constitute current world leading results of weakly interacting massive particles annihilting to neutrino for masses between 50 and 200 GeV. |
format |
Book |
author |
Medici, Morten Ankersen |
spellingShingle |
Medici, Morten Ankersen Search for Dark Matter Annihilation in the Galactic Halo using IceCube |
author_facet |
Medici, Morten Ankersen |
author_sort |
Medici, Morten Ankersen |
title |
Search for Dark Matter Annihilation in the Galactic Halo using IceCube |
title_short |
Search for Dark Matter Annihilation in the Galactic Halo using IceCube |
title_full |
Search for Dark Matter Annihilation in the Galactic Halo using IceCube |
title_fullStr |
Search for Dark Matter Annihilation in the Galactic Halo using IceCube |
title_full_unstemmed |
Search for Dark Matter Annihilation in the Galactic Halo using IceCube |
title_sort |
search for dark matter annihilation in the galactic halo using icecube |
publisher |
The Niels Bohr Institute, Faculty of Science, University of Copenhagen |
publishDate |
2016 |
url |
https://curis.ku.dk/portal/da/publications/search-for-dark-matter-annihilation-in-the-galactic-halo-using-icecube(b40eb850-e5d5-4d2e-9c10-80d852cd1f53).html https://soeg.kb.dk/permalink/45KBDK_KGL/fbp0ps/alma99122096844605763 |
long_lat |
ENVELOPE(-68.705,-68.705,-71.251,-71.251) |
geographic |
Milky Way South Pole |
geographic_facet |
Milky Way South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Medici , M A 2016 , Search for Dark Matter Annihilation in the Galactic Halo using IceCube . The Niels Bohr Institute, Faculty of Science, University of Copenhagen . < https://soeg.kb.dk/permalink/45KBDK_KGL/fbp0ps/alma99122096844605763 > |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1766202839642669056 |