All-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCore
<p>We present the first IceCube search for a signal of dark matter annihilations in the Milky Way using all-flavour neutrino-induced particle cascades. The analysis focuses on the DeepCore sub-detector of IceCube, and uses the surrounding IceCube strings as a veto region in order to select sta...
| Main Authors: | , |
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| Format: | Journal article |
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Springer
2016
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| _version_ | 1797053664323436544 |
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| author | Sarkar, S IceCube Collaboration |
| author_facet | Sarkar, S IceCube Collaboration |
| author_sort | Sarkar, S |
| collection | OXFORD |
| description | <p>We present the first IceCube search for a signal of dark matter annihilations in the Milky Way using all-flavour neutrino-induced particle cascades. The analysis focuses on the DeepCore sub-detector of IceCube, and uses the surrounding IceCube strings as a veto region in order to select starting events in the DeepCore volume. We use 329 live-days of data from IceCube operating in its 86-string configuration during 2011–2012. No neutrino excess is found, the final result being compatible with the background-only hypothesis. From this null result, we derive upper limits on the velocity-averaged self-annihilation cross-section,<σAv>, for dark matter candidate masses ranging from 30 GeV up to 10 TeV, assuming both a cuspy and a flat-cored dark matter halo profile. For dark matter masses between 200 GeV and 10 TeV, the results improve on all previous IceCube results on <σAv>, reaching a level of 10^−23 cm3 s^−1 , depending on the annihilation channel assumed, for a cusped NFW profile. The analysis demonstrates that all-flavour searches are competitive with muon channel searches despite the intrinsically worse angular resolution of cascades compared to muon tracks in IceCube.</p> |
| first_indexed | 2024-03-06T18:46:50Z |
| format | Journal article |
| id | oxford-uuid:0ecda984-c0e1-4b5c-ae17-3768f5e2d846 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:46:50Z |
| publishDate | 2016 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:0ecda984-c0e1-4b5c-ae17-3768f5e2d8462022-03-26T09:47:54ZAll-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCoreJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0ecda984-c0e1-4b5c-ae17-3768f5e2d846Symplectic Elements at OxfordSpringer2016Sarkar, SIceCube Collaboration<p>We present the first IceCube search for a signal of dark matter annihilations in the Milky Way using all-flavour neutrino-induced particle cascades. The analysis focuses on the DeepCore sub-detector of IceCube, and uses the surrounding IceCube strings as a veto region in order to select starting events in the DeepCore volume. We use 329 live-days of data from IceCube operating in its 86-string configuration during 2011–2012. No neutrino excess is found, the final result being compatible with the background-only hypothesis. From this null result, we derive upper limits on the velocity-averaged self-annihilation cross-section,<σAv>, for dark matter candidate masses ranging from 30 GeV up to 10 TeV, assuming both a cuspy and a flat-cored dark matter halo profile. For dark matter masses between 200 GeV and 10 TeV, the results improve on all previous IceCube results on <σAv>, reaching a level of 10^−23 cm3 s^−1 , depending on the annihilation channel assumed, for a cusped NFW profile. The analysis demonstrates that all-flavour searches are competitive with muon channel searches despite the intrinsically worse angular resolution of cascades compared to muon tracks in IceCube.</p> |
| spellingShingle | Sarkar, S IceCube Collaboration All-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCore |
| title | All-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCore |
| title_full | All-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCore |
| title_fullStr | All-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCore |
| title_full_unstemmed | All-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCore |
| title_short | All-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCore |
| title_sort | all flavour search for neutrinos from dark matter annihilations in the milky way with icecube deepcore |
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