The 3.5 keV Line from Stringy Axions
arXiv:1707.02987 · doi:10.1007/JHEP10(2017)192
Abstract
An interesting result in particle astrophysics is the recent detection of an unexplained 3.5 keV line from galaxy clusters. A promising model, which can explain the morphology of the signal and its non-observation in dwarf spheroidal galaxies, involves a 7 keV dark matter particle decaying into a pair of ultra-light axions that convert into photons in the magnetic field of the clusters. Given that light axions emerge naturally in 4D string vacua, in this paper we present a microscopic realisation of this model within the framework of type IIB flux compactifications. Dark matter is a local closed string axion which develops a tiny mass due to subdominant poly-instanton corrections to the superpotential and couples via kinetic mixing to an almost massless open string axion living on a D3-brane at a singularity. The interaction of this ultra-light axion with photons is induced by U(1) kinetic mixing. After describing the Calabi-Yau geometry and the brane set-up, we discuss in depth moduli stabilisation, the resulting mass spectrum and the strength of all relevant couplings.
arXiv comment27 pages + appendices, 1 figure; typos corrected, references added, additional comments on the cosmological history and DM production in the conclusions
References in corpus (76)
- de Sitter Vacua in String Theory
- Hierarchies from Fluxes in String Compactifications
- String Axiverse
- Axions In String Theory
- Sterile Neutrinos as Dark Matter
- Systematics of Moduli Stabilisation in Calabi-Yau Flux Compactifications
- The MSM, Dark Matter and Baryon Asymmetry of the Universe
- Detection of An Unidentified Emission Line in the Stacked X-ray spectrum of Galaxy Clusters
- An unidentified line in X-ray spectra of the Andromeda galaxy and Perseus galaxy cluster
- Supersymmetry Breaking and alpha'-Corrections to Flux Induced Potentials
- The type IIB string axiverse and its low-energy phenomenology
- Large-Volume Flux Compactifications: Moduli Spectrum and D3/D7 Soft Supersymmetry Breaking
- Revisiting the SN1987A gamma-ray limit on ultralight axion-like particles
- The effective action of N=1 Calabi-Yau orientifolds
- D-Branes at Singularities : A Bottom-Up Approach to the String Embedding of the Standard Model
- The QCD Axion and Moduli Stabilisation
- Naturally Light Hidden Photons in LARGE Volume String Compactifications
- Kinetic Mixing of the Photon with Hidden U(1)s in String Phenomenology
- Kahler Moduli Inflation
- D-brane Instantons in Type II String Theory
- String Loop Corrections to Kahler Potentials in Orientifolds
- General Analysis of LARGE Volume Scenarios with String Loop Moduli Stabilisation
- SUSY Breaking in Local String/F-Theory Models
- Moduli Stabilisation versus Chirality for MSSM like Type IIB Orientifolds
- Jumping Through Loops: On Soft Terms from Large Volume Compactifications
- An M Theory Solution to the Strong CP Problem and Constraints on the Axiverse
- Dark Radiation in LARGE Volume Models
- Checking the dark matter origin of 3.53 keV line with the Milky Way center
- Systematics of String Loop Corrections in Type IIB Calabi-Yau Flux Compactifications
- Gamma Rays from SN1987A due to Pseudoscalar Conversion
- SN 1987A Gamma-Ray Limits on the Conversion of Pseudoscalars
- Discovery of a 3.5 keV line in the Galactic Center and a Critical Look at the Origin of the Line Across Astronomical Targets
- Constraints on 3.55 keV line emission from stacked observations of dwarf spheroidal galaxies
- D-Branes at del Pezzo Singularities: Global Embedding and Moduli Stabilisation
- Explicit de Sitter Flux Vacua for Global String Models with Chiral Matter
- and dS
- Non-Detection of X-Ray Emission From Sterile Neutrinos in Stacked Galaxy Spectra
- De Sitter from T-branes
- Hitomi constraints on the 3.5 keV line in the Perseus galaxy cluster
- Testing String Vacua in the Lab: From a Hidden CMB to Dark Forces in Flux Compactifications
- Nonperturbative corrections to 4D string theory effective actions from SL(2,Z) duality and supersymmetry
- A 3.55 keV Photon Line and its Morphology from a 3.55 keV ALP Line
- Dynamical supersymmetry breaking in models with a Green-Schwarz mechanism
- Towards Realistic String Vacua From Branes At Singularities
- Kahler Potentials of Chiral Matter Fields for Calabi-Yau String Compactifications
- Searching for decaying dark matter in deep XMM-Newton observation of the Draco dwarf spheroidal
- Searching for a 0.1-1 keV Cosmic Axion Background
- A novel scenario for the possible X-ray line feature at ~3.5 keV: Charge exchange with bare sulfur ions
- Where do the 3.5 keV photons come from? A morphological study of the Galactic Center and of Perseus
- Deep XMM Observations of Draco rule out at the 99% Confidence Level a Dark Matter Decay Origin for the 3.5 keV Line
- Constraints on Axion-Like Particles from X-ray Observations of NGC1275
- Non-Perturbative Superpotentials in F-theory and String Duality
- Sequestered de Sitter String Scenarios: Soft-terms
- Modulus-dominated SUSY-breaking soft terms in F-theory and their test at LHC
- D3/D7 Branes at Singularities: Constraints from Global Embedding and Moduli Stabilisation
- Global String Embeddings for the Nilpotent Goldstino
- Correlation between Dark Matter and Dark Radiation in String Compactifications
- Constraints on Axion-Like Particles from Non-Observation of Spectral Modulations for X-ray Point Sources
- Non-thermal Dark Matter in String Compactifications
- Moduli Redefinitions and Moduli Stabilisation
- Power Towers of String Instantons for N=1 Vacua
- Moduli Vacuum Misalignment and Precise Predictions in String Inflation
- Questioning a 3.5 keV dark matter emission line
- Sequestering in String Compactifications
- Radial Profile of the 3.55 keV line out to in the Perseus Cluster
- A Note on Poly-Instanton Effects in Type IIB Orientifolds on Calabi-Yau Threefolds
- Galaxy Cluster Thermal X-Ray Spectra Constrain Axion-Like Particles
- Multi-instanton and string loop corrections in toroidal orbifold models
- Testing the origin of ~3.55 keV line in individual galaxy clusters observed with XMM-Newton
- Probing a QCD String Axion with Precision Cosmological Measurements
- General Analysis of Dark Radiation in Sequestered String Models
- 7.1 keV sterile neutrino constraints from X-ray observations of 33 clusters of galaxies with Chandra ACIS
- Observation of the new emission line at ~3.5 keV in X-ray spectra of galaxies and galaxy clusters
- The International Axion Observatory (IAXO)
- Observational consistency and future predictions for a 3.5 keV ALP to photon line
- Consistency of Hitomi, XMM-Newton and Chandra 3.5 keV data from Perseus
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- Physics potential of the International Axion Observatory (IAXO)
- De Sitter vs Quintessence in String Theory
- Axion-like Particles Implications for High-Energy Astrophysics
- Reheating and Dark Radiation after Fibre Inflation
- Systematics of type IIB moduli stabilisation with odd axions
- Moduli Stabilisation and the Statistics of Axion Physics in the Landscape
- The Dark Universe after Reheating in String Inflation
- Inflaxion Dark Matter
- Reheating-Induced Axion Dark Matter After Low Scale Inflation
- Axions at the meV Crossroads: Theory, Cosmology, Astrophysics, and Experiments