Matching resummed endpoint and continuum γ-ray spectra from dark-matter annihilation

M. Beneke; K. Urban; M. Vollmann

doi:10.1016/j.physletb.2022.137248

Matching resummed endpoint and continuum γ-ray spectra from dark-matter annihilation

M. Beneke
, K. Urban
, M. Vollmann

Chair of Theoretical Elementary Particle Physics

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

For the minimal wino and Higgsino benchmark models we provide accurate energy spectra of high-energy photons from TeV scale dark-matter annihilation χχ→γ+X by merging electroweak Sudakov resummation near maximal energy with the electroweak parton-shower PPPC4DM, and accounting for the Sommerfeld effect. Electroweak resummation significantly changes the shape of the photon-energy spectrum in the wide range E_γ∼(0.6…1)m_χ and hence the form of the so-called “line-signal”.

Original language	English
Article number	137248
Journal	Physics Letters B
Volume	834
DOIs	https://doi.org/10.1016/j.physletb.2022.137248
State	Published - 10 Nov 2022

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10.1016/j.physletb.2022.137248

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abstract = "For the minimal wino and Higgsino benchmark models we provide accurate energy spectra of high-energy photons from TeV scale dark-matter annihilation χχ→γ+X by merging electroweak Sudakov resummation near maximal energy with the electroweak parton-shower PPPC4DM, and accounting for the Sommerfeld effect. Electroweak resummation significantly changes the shape of the photon-energy spectrum in the wide range Eγ∼(0.6…1)mχ and hence the form of the so-called “line-signal”.",

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AU - Beneke, M.

AU - Urban, K.

AU - Vollmann, M.

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Y1 - 2022/11/10

N2 - For the minimal wino and Higgsino benchmark models we provide accurate energy spectra of high-energy photons from TeV scale dark-matter annihilation χχ→γ+X by merging electroweak Sudakov resummation near maximal energy with the electroweak parton-shower PPPC4DM, and accounting for the Sommerfeld effect. Electroweak resummation significantly changes the shape of the photon-energy spectrum in the wide range Eγ∼(0.6…1)mχ and hence the form of the so-called “line-signal”.

AB - For the minimal wino and Higgsino benchmark models we provide accurate energy spectra of high-energy photons from TeV scale dark-matter annihilation χχ→γ+X by merging electroweak Sudakov resummation near maximal energy with the electroweak parton-shower PPPC4DM, and accounting for the Sommerfeld effect. Electroweak resummation significantly changes the shape of the photon-energy spectrum in the wide range Eγ∼(0.6…1)mχ and hence the form of the so-called “line-signal”.

UR - https://www.scopus.com/pages/publications/85134835521

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DO - 10.1016/j.physletb.2022.137248

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VL - 834

JO - Physics Letters B

JF - Physics Letters B

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ER -

Matching resummed endpoint and continuum γ-ray spectra from dark-matter annihilation

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