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A Precision Search for WIMPs with Charged Cosmic Rays

AMS-02 has reached the sensitivity to probe canonical thermal WIMPs by their annihilation into antiprotons. Due to the high precision of the data, uncertainties in the astrophysical background have become the most limiting factor for indirect dark matter detection. In this work we systematically qua...

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Detalles Bibliográficos
Autores principales: Reinert, Annika, Winkler, Martin Wolfgang
Lenguaje:eng
Publicado: 2018
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1475-7516/2018/01/055
http://cds.cern.ch/record/2784186
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author Reinert, Annika
Winkler, Martin Wolfgang
author_facet Reinert, Annika
Winkler, Martin Wolfgang
author_sort Reinert, Annika
collection CERN
description AMS-02 has reached the sensitivity to probe canonical thermal WIMPs by their annihilation into antiprotons. Due to the high precision of the data, uncertainties in the astrophysical background have become the most limiting factor for indirect dark matter detection. In this work we systematically quantify and—where possible—reduce uncertainties in the antiproton background. We constrain the propagation of charged cosmic rays through the combination of antiproton, B/C and positron data. Cross section uncertainties are determined from a wide collection of accelerator data and are—for the first time ever—fully taken into account. This allows us to robustly constrain even subdominant dark matter signals through their spectral properties. For a standard NFW dark matter profile we are able to exclude thermal WIMPs with masses up to 570 GeV which annihilate into bottom quarks. While we confirm a reported excess compatible with dark matter of mass around 80 GeV, its local (global) significance only reaches 2.2 σ (1.1 σ) in our analysis.
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spelling cern-27841862021-11-01T10:50:59Zdoi:10.1088/1475-7516/2018/01/055http://cds.cern.ch/record/2784186engReinert, AnnikaWinkler, Martin WolfgangA Precision Search for WIMPs with Charged Cosmic Raysastro-ph.HEhep-phAstrophysics and AstronomyParticle Physics - PhenomenologyAMS-02 has reached the sensitivity to probe canonical thermal WIMPs by their annihilation into antiprotons. Due to the high precision of the data, uncertainties in the astrophysical background have become the most limiting factor for indirect dark matter detection. In this work we systematically quantify and—where possible—reduce uncertainties in the antiproton background. We constrain the propagation of charged cosmic rays through the combination of antiproton, B/C and positron data. Cross section uncertainties are determined from a wide collection of accelerator data and are—for the first time ever—fully taken into account. This allows us to robustly constrain even subdominant dark matter signals through their spectral properties. For a standard NFW dark matter profile we are able to exclude thermal WIMPs with masses up to 570 GeV which annihilate into bottom quarks. While we confirm a reported excess compatible with dark matter of mass around 80 GeV, its local (global) significance only reaches 2.2 σ (1.1 σ) in our analysis.AMS-02 has reached the sensitivity to probe canonical thermal WIMPs by their annihilation into antiprotons. Due to the high precision of the data, uncertainties in the astrophysical background have become the most limiting factor for indirect dark matter detection. In this work we systematically quantify and -- where possible -- reduce uncertainties in the antiproton background. We constrain the propagation of charged cosmic rays through the combination of antiproton, B/C and positron data. Cross section uncertainties are determined from a wide collection of accelerator data and are -- for the first time ever -- fully taken into account. This allows us to robustly constrain even subdominant dark matter signals through their spectral properties. For a standard NFW dark matter profile we are able to exclude thermal WIMPs with masses up to 570 GeV which annihilate into bottom quarks. While we confirm a reported excess compatible with dark matter of mass around 80 GeV, its local (global) significance only reaches 2.2 sigma (1.1 sigma) in our analysis.arXiv:1712.00002NORDITA-2017-127BONN-TH-2017-12oai:cds.cern.ch:27841862018
spellingShingle astro-ph.HE
hep-ph
Astrophysics and Astronomy
Particle Physics - Phenomenology
Reinert, Annika
Winkler, Martin Wolfgang
A Precision Search for WIMPs with Charged Cosmic Rays
title A Precision Search for WIMPs with Charged Cosmic Rays
title_full A Precision Search for WIMPs with Charged Cosmic Rays
title_fullStr A Precision Search for WIMPs with Charged Cosmic Rays
title_full_unstemmed A Precision Search for WIMPs with Charged Cosmic Rays
title_short A Precision Search for WIMPs with Charged Cosmic Rays
title_sort precision search for wimps with charged cosmic rays
topic astro-ph.HE
hep-ph
Astrophysics and Astronomy
Particle Physics - Phenomenology
url https://dx.doi.org/10.1088/1475-7516/2018/01/055
http://cds.cern.ch/record/2784186
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