2012
DOI: 10.1103/physrevd.86.083521
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What if dark matter gamma-ray lines come with gluon lines?

Abstract: Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMIn dark matter (DM) models, the production of a γ line (or of a ‘‘box-shaped’’ γ-ray spectrum) from DM annihilation proceeds in general from a loop diagram involving a heavy charged particle. If the charged particle in the loop carries also a color charge, this leads inevitably to DM annihilation to gluons, with a natural… Show more

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Cited by 76 publications
(81 citation statements)
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References 44 publications
(92 reference statements)
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“…This in turn would imply that the annihilation rate into gamma rays is fixed by (31) a possibility very much in the spirit of the scenario considered in [14]. We will address such processes with gluons and quarks in final states in a work in progress, as well as the constraints from the measurements of the antiproton flux in cosmic rays, see e.g.…”
Section: Prospects and Possible Extensionsmentioning
confidence: 99%
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“…This in turn would imply that the annihilation rate into gamma rays is fixed by (31) a possibility very much in the spirit of the scenario considered in [14]. We will address such processes with gluons and quarks in final states in a work in progress, as well as the constraints from the measurements of the antiproton flux in cosmic rays, see e.g.…”
Section: Prospects and Possible Extensionsmentioning
confidence: 99%
“…We will address such processes with gluons and quarks in final states in a work in progress, as well as the constraints from the measurements of the antiproton flux in cosmic rays, see e.g. [11,14]. A second interesting aspect in scalar dark matter models coupled to heavy vector-like quarks is direct detection.…”
Section: Prospects and Possible Extensionsmentioning
confidence: 99%
See 1 more Smart Citation
“…Radio telescopes might help to confirm or rule out the dark matter interpretation of the line soon [32]. While the origin of the γ-ray line from the galactic center still has to be clarified, a noticeable amount of theoretical interest has been triggered [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49]. If interpreted in terms of dark matter, the γ-ray line requires a rather large annihilation cross section into photons, σv γγ ∼ 10 −27 cm 3 s −1 , if one assumes an Einasto profile [22].…”
Section: Jhep01(2013)124mentioning
confidence: 99%
“…To avoid the overwhelming 1-loop annihilations into gluons [37,43,44], we focus on the case where DM has vector-like couplings with Z . Although we are forced to live in a regime of relatively small mixing angles by the EW precision constraints, we can still have large annihilation cross sections into gamma ray lines, as shown in Figures 10, 11 and 12.…”
Section: One Loop Annihilations and Gamma Ray Linesmentioning
confidence: 99%