All-flavour Search for Neutrinos from Dark Matter Annihilations in the Milky Way with IceCube/DeepCore

M.G. Aartsen; K. Abraham; M. Ackermann; Joe Adams; J.A. Aguilar; M. Ahlers; M. Ahrens; D. Altmann; K. Andeen; T. Anderson; I. Ansseau; G. Anton; David Jason Koskinen; Michael James Larson; Morten Ankersen Medici; M Rameez; Subir Sarkar

doi:10.1140/epjc/s10052-016-4375-3

All-flavour Search for Neutrinos from Dark Matter Annihilations in the Milky Way with IceCube/DeepCore

M.G. Aartsen, K. Abraham , M. Ackermann, Joe Adams, J.A. Aguilar, M. Ahlers, M. Ahrens, D. Altmann, K. Andeen, T. Anderson, I. Ansseau, G. Anton, David Jason Koskinen, Michael James Larson, Morten Ankersen Medici, M Rameez, Subir Sarkar

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Abstract

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, ⟨ σ_Av ⟩ , 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 ⟨ σ_Av ⟩ , 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.

Originalsprog	Engelsk
Artikelnummer	531
Tidsskrift	European Physical Journal C. Particles and Fields
Vol/bind	76
ISSN	1434-6044
DOI	https://doi.org/10.1140/epjc/s10052-016-4375-3
Status	Udgivet - 1 okt. 2016

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10.1140/epjc/s10052-016-4375-3

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Aartsen, M. G., Abraham , K., Ackermann, M., Adams, J., Aguilar, J. A., Ahlers, M., Ahrens, M., Altmann, D., Andeen, K., Anderson, T., Ansseau, I., Anton, G., Koskinen, D. J., Larson, M. J., Medici, M. A., Rameez, M., & Sarkar, S. (2016). All-flavour Search for Neutrinos from Dark Matter Annihilations in the Milky Way with IceCube/DeepCore. European Physical Journal C. Particles and Fields, 76, [531]. https://doi.org/10.1140/epjc/s10052-016-4375-3

Aartsen, MG, Abraham , K, Ackermann, M, Adams, J, Aguilar, JA, Ahlers, M, Ahrens, M, Altmann, D, Andeen, K, Anderson, T, Ansseau, I, Anton, G, Koskinen, DJ, Larson, MJ, Medici, MA, Rameez, M & Sarkar, S 2016, 'All-flavour Search for Neutrinos from Dark Matter Annihilations in the Milky Way with IceCube/DeepCore', European Physical Journal C. Particles and Fields, bind 76, 531. https://doi.org/10.1140/epjc/s10052-016-4375-3

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title = "All-flavour Search for Neutrinos from Dark Matter Annihilations in the Milky Way with IceCube/DeepCore",

abstract = "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.",

author = "M.G. Aartsen and K. Abraham and M. Ackermann and Joe Adams and J.A. Aguilar and M. Ahlers and M. Ahrens and D. Altmann and K. Andeen and T. Anderson and I. Ansseau and G. Anton and Koskinen, {David Jason} and Larson, {Michael James} and Medici, {Morten Ankersen} and M Rameez and Subir Sarkar",

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AU - Aartsen, M.G.

AU - Abraham , K.

AU - Ackermann, M.

AU - Adams, Joe

AU - Aguilar, J.A.

AU - Ahlers, M.

AU - Ahrens, M.

AU - Altmann, D.

AU - Andeen, K.

AU - Anderson, T.

AU - Ansseau, I.

AU - Anton, G.

AU - Koskinen, David Jason

AU - Larson, Michael James

AU - Medici, Morten Ankersen

AU - Rameez, M

AU - Sarkar, Subir

PY - 2016/10/1

Y1 - 2016/10/1

N2 - 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.

AB - 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.

U2 - 10.1140/epjc/s10052-016-4375-3

DO - 10.1140/epjc/s10052-016-4375-3

M3 - Journal article

SN - 1434-6044

VL - 76

JO - The European Physical Journal C: Particles and Fields

JF - The European Physical Journal C: Particles and Fields

M1 - 531

ER -

All-flavour Search for Neutrinos from Dark Matter Annihilations in the Milky Way with IceCube/DeepCore

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