Energetic γ-rays from TeV scale dark matter annihilation resummed

Energetic γ-rays from TeV scale dark matter annihilation resummed

The annihilation cross section of TeV scale dark matter particles χ0 with electroweak charges into photons is affected by large quantum corrections due to Sudakov logarithms and the Sommerfeld effect. We calculate the semi-inclusive photon energy spectrum in χ0χ0→γ+X in the vicinity of the maximal p...

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Main Authors: M. Beneke, A. Broggio, C. Hasner, M. Vollmann
Format: Article
Language:English
Published: Elsevier 2018-11-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269318307652
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spelling doaj-7ed9d4ab2176410e977970c2cbf7ec9f2020-11-25T01:38:36ZengElsevierPhysics Letters B0370-26932018-11-01786347354Energetic γ-rays from TeV scale dark matter annihilation resummedM. Beneke0A. Broggio1C. Hasner2M. Vollmann3Physik Department T31, James-Franck-Straße 1, Technische Universität München, D-85748 Garching, GermanyPhysik Department T31, James-Franck-Straße 1, Technische Universität München, D-85748 Garching, GermanyPhysik Department T31, James-Franck-Straße 1, Technische Universität München, D-85748 Garching, GermanyCorresponding author.; Physik Department T31, James-Franck-Straße 1, Technische Universität München, D-85748 Garching, GermanyThe annihilation cross section of TeV scale dark matter particles χ0 with electroweak charges into photons is affected by large quantum corrections due to Sudakov logarithms and the Sommerfeld effect. We calculate the semi-inclusive photon energy spectrum in χ0χ0→γ+X in the vicinity of the maximal photon energy Eγ=mχ with NLL' accuracy in an all-order summation of the electroweak perturbative expansion adopting the pure wino model. This results in the most precise theoretical prediction of the annihilation rate for γ-ray telescopes with photon energy resolution of parametric order mW2/mχ for photons with TeV energies.http://www.sciencedirect.com/science/article/pii/S0370269318307652
collection DOAJ
language English
format Article
sources DOAJ
author M. Beneke
A. Broggio
C. Hasner
M. Vollmann
spellingShingle M. Beneke
A. Broggio
C. Hasner
M. Vollmann
Energetic γ-rays from TeV scale dark matter annihilation resummed
Physics Letters B
author_facet M. Beneke
A. Broggio
C. Hasner
M. Vollmann
author_sort M. Beneke
title Energetic γ-rays from TeV scale dark matter annihilation resummed
title_short Energetic γ-rays from TeV scale dark matter annihilation resummed
title_full Energetic γ-rays from TeV scale dark matter annihilation resummed
title_fullStr Energetic γ-rays from TeV scale dark matter annihilation resummed
title_full_unstemmed Energetic γ-rays from TeV scale dark matter annihilation resummed
title_sort energetic γ-rays from tev scale dark matter annihilation resummed
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2018-11-01
description The annihilation cross section of TeV scale dark matter particles χ0 with electroweak charges into photons is affected by large quantum corrections due to Sudakov logarithms and the Sommerfeld effect. We calculate the semi-inclusive photon energy spectrum in χ0χ0→γ+X in the vicinity of the maximal photon energy Eγ=mχ with NLL' accuracy in an all-order summation of the electroweak perturbative expansion adopting the pure wino model. This results in the most precise theoretical prediction of the annihilation rate for γ-ray telescopes with photon energy resolution of parametric order mW2/mχ for photons with TeV energies.
url http://www.sciencedirect.com/science/article/pii/S0370269318307652
work_keys_str_mv AT mbeneke energeticgraysfromtevscaledarkmatterannihilationresummed
AT abroggio energeticgraysfromtevscaledarkmatterannihilationresummed
AT chasner energeticgraysfromtevscaledarkmatterannihilationresummed
AT mvollmann energeticgraysfromtevscaledarkmatterannihilationresummed
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