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The 3.5 keV X-ray line signal from decaying moduli with low cutoff scale
High Energy Physics - Phenomenology · Submitted 7 Mar 2014
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim The recent unidentified 3.5 keV X-ray line signal can be explained by decaying moduli dark matter with a cutoff scale one order of magnitude smaller than the Planck scale.
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The abstract, sentence by sentence
The recent unidentified 3.5 keV X-ray line signal can be explained by decaying moduli dark matter with a cutoff scale one order of magnitude smaller than the Planck scale. We show that such modulus field with the low cutoff scale follows a time-dependent potential minimum and its abundance is reduced by the adiabatic suppression mechanism. As a result the modulus abundance can naturally be consistent with the observed dark matter abundance without any fine-tuning of the initial oscillation amplitude.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The recent unidentified 3.5 keV X-ray line signal can be explained by decaying moduli dark matter with a cutoff scale one order of magnitude smaller than the Planck scale. | result 0.43 | 0.32 | 0.86 | asserted 0.57 |
| s1 | We show that such modulus field with the low cutoff scale follows a time-dependent potential minimum and its abundance is reduced by the adiabatic suppression mechanism. | result 0.49 | 0.87 | 0.08 | asserted 1.00 |
| s2 | As a result the modulus abundance can naturally be consistent with the observed dark matter abundance without any fine-tuning of the initial oscillation amplitude. | result 0.62 | 0.76 | 0.28 | hedged possibility 0.79 |
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The paper
Original abstract
The recent unidentified 3.5 keV X-ray line signal can be explained by decaying moduli dark matter with a cutoff scale one order of magnitude smaller than the Planck scale. We show that such modulus field with the low cutoff scale follows a time-dependent potential minimum and its abundance is reduced by the adiabatic suppression mechanism. As a result the modulus abundance can naturally be consistent with the observed dark matter abundance without any fine-tuning of the initial oscillation amplitude.
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References
How the literature uses it
14 arXiv papers cite this in 14 sentences
Papers citing it · 7 sentences without a confident label
Compares with it 1 paper
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Finally we note that our mechanism for generating a 3.5 keV line as well as the implications of the model are very different from other models that have recently been proposed [ref] .
3.5 keV Galactic Emission Line as a Signal from the Hidden Sector · Conclusion · 0.97
Cites it as background 6 papers
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A few attempts have been already taken in order to explain this excess of X-ray signal by (i) decaying dark matter or annihilating dark matter, [ref] , (ii) magnetic dipolar dark matter (via upscattering of dark matter into an excited states and subsequent decay of excited states into dark matter and an X-ray photon), [ref] , (iii) others [ref] .
Dipolar dark matter in light of 3.5 keV X-ray Line, Neutrino mass and LUX data · Introduction · 0.92
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Dark matter induced 3.5 keV photon excess has been recently studied in the scenario of extend neutrino sector [ref] , the axion [ref] or its supersymmertic partner axino [ref] , string moduli [ref] , and annihilation or decay via low energy effective operators [ref] .
keV Photon Emission from Light Nonthermal Dark Matter · INtroduction · 0.98
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Many studies then attempted to explain the anomalous line in particle physics motivated DM models [ref] .
Structure formation in a mixed dark matter model with decaying sterile neutrino: the 3.5 keV X-ray line and the Galactic substructure · Introduction · 0.98
What it cites · 21 sentences without a confident label
Cites as background 9 papers
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After the discovery of the $3.5$ keV X-ray line, there appeared various possibilities of producing the X-ray line by dark matter (DM) [ref] .
X-ray Lines from Dark Matter: The Good, The Bad, and The Unlikely · Introduction · 0.98
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After the discovery of the $3.5$ keV X-ray line, there appeared various possibilities of producing the X-ray line by dark matter (DM) [ref] .
An X-Ray Line from eXciting Dark Matter · Introduction · 0.98
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After the discovery of the $3.5$ keV X-ray line, there appeared various possibilities of producing the X-ray line by dark matter (DM) [ref] .
The 7 keV axion dark matter and the X-ray line signal · Introduction · 0.98
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