Cargando…
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...
Autores principales: | , |
---|---|
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 |
_version_ | 1780972090448412672 |
---|---|
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. |
id | cern-2784186 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2018 |
record_format | invenio |
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 |
work_keys_str_mv | AT reinertannika aprecisionsearchforwimpswithchargedcosmicrays AT winklermartinwolfgang aprecisionsearchforwimpswithchargedcosmicrays AT reinertannika precisionsearchforwimpswithchargedcosmicrays AT winklermartinwolfgang precisionsearchforwimpswithchargedcosmicrays |