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Energetic $\gamma$-rays from TeV scale dark matter annihilation resummed
| العنوان: | Energetic $\gamma$-rays from TeV scale dark matter annihilation resummed |
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| المؤلفون: | Beneke, M., Broggio, A., Hasner, C., Vollmann, M. |
| سنة النشر: | 2018 |
| المجموعة: | Astrophysics High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | The annihilation cross section of TeV scale dark matter particles $\chi^0$ 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 $\chi^0\chi^0\to \gamma+X$ in the vicinity of the maximal photon energy $E_\gamma = m_\chi$ 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 $\gamma$-ray telescopes with photon energy resolution of parametric order $m_W^2/m_\chi$ for photons with TeV energies. Comment: 16 pages, v2: corrections implemented as detailed in Erratum: Phys.Lett.B 810, 135831 (2020) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.physletb.2018.10.008 |
| URL الوصول: | http://arxiv.org/abs/1805.07367 |
| رقم الانضمام: | edsarx.1805.07367 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.physletb.2018.10.008 |
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