Search for the gamma-ray spectral lines with the DAMPE and the Fermi-LAT observations

Abstract

Weakly interacting massive particles, as a major candidate of dark matter (DM), may directly annihilate or decay into high-energy photons, producing monochromatic spectral lines in the gamma-ray band. These spectral lines, if detected, are smoking-gun signatures for the existence of new physics. Using the 5 years of DAMPE and 13 years of Fermi-LAT data, we search for line-like signals in the energy range of 3 GeV to 1 TeV from the Galactic halo. Different regions of interest are considered to accommodate different DM density profiles. We do not find any significant line structure, and the previously reported line-like feature at $\sim$133 GeV is also not detected in our analysis. Adopting a local DM density of ${\rho }_{\mathrm{local}}=0.4\mathrm{GeV}\mathrm{c}{\mathrm{m}}^{-3}$, we derive 95% confidence level constraints on the velocity-averaged cross-section of $⟨\sigma v{⟩}_{\gamma \gamma }\lesssim 4\times 10^{-28}\mathrm{c}{\mathrm{m}}^3{\mathrm{s}}^{-1}$ and the decay lifetime of ${\tau }_{\gamma \nu }\gtrsim 5\times 10^{29}\mathrm{s}$ at 100 GeV, achieving the strongest constraints to date for the line energies of 6-660 GeV. The improvement stems from the longer Fermi-LAT data set used and the inclusion of DAMPE data in the analysis. The simultaneous use of two independent data sets could also reduce the systematic uncertainty of the search.

arXiv comment14 pages, 10 figures. Accepted for publication in PRD

References in corpus (37)

• The Structure of Cold Dark Matter Halos
• Particle Dark Matter: Evidence, Candidates and Constraints
• Supersymmetric Dark Matter
• The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
• Dark Matter Candidates from Particle Physics and Methods of Detection
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• The Diversity and Similarity of Simulated Cold Dark Matter Halos
• A Tentative Gamma-Ray Line from Dark Matter Annihilation at the Fermi Large Area Telescope
• The DArk Matter Particle Explorer mission
• Updated Search for Spectral Lines from Galactic Dark Matter Interactions with Pass 8 Data from the Fermi Large Area Telescope
• Fermi LAT Search for Internal Bremsstrahlung Signatures from Dark Matter Annihilation
• Search for Gamma-ray Spectral Lines with the Fermi Large Area Telescope and Dark Matter Implications
• Fermi LAT Search for Dark Matter in Gamma-ray Lines and the Inclusive Photon Spectrum
• Fermi LAT Search for Photon Lines from 30 to 200 GeV and Dark Matter Implications
• Dark matter local density determination: recent observations and future prospects
• Search for $\gamma$-ray line signals from dark matter annihilations in the inner Galactic halo from ten years of observations with H.E.S.S
• Gamma Ray Spectrum from Gravitino Dark Matter Decay
• Fermi 130 GeV gamma-ray excess and dark matter annihilation in sub-haloes and in the Galactic centre
• Inert Higgs Dark Matter for CDF-II W-boson Mass and Detection Prospects
• Is the 130 GeV Line Real? A Search for Systematics in the Fermi-LAT Data
• Search for 100 MeV to 10 GeV gamma-ray lines in the Fermi-LAT data and implications for gravitino dark matter in the $\mu \nu$SSM
• Dark matter line search using a joint analysis of dwarf galaxies with the Fermi Gamma-ray Space Telescope
• H.E.S.S. limits on line-like dark matter signatures in the 100 GeV to 2 TeV energy range close to the Galactic Centre
• Search with EGRET for a Gamma Ray Line from the Galactic Center
• Search for a gamma-ray line feature from a group of nearby Galaxy clusters with Fermi LAT Pass 8 data
• An evidence for indirect detection of dark matter from galaxy clusters in Fermi-LAT data
• Search for Gamma-Ray Lines towards Galaxy Clusters with the Fermi-LAT
• Search for gamma-ray spectral lines with the DArk Matter Particle Explorer
• Explaining the GeV antiproton/$\gamma -$ray excesses and W-boson mass anomaly in an inert two Higgs doublet model
• Perspective of monochromatic gamma-ray line detection with the High Energy cosmic-Radiation Detection (HERD) facility onboard China's Space Station
• Search for Gamma-ray Spectral Lines from Dark Matter Annihilation in Dwarf Galaxies with the High-Altitude Water Cherenkov Observatory
• Search for Gamma-ray Spectral Lines from Dark Matter Annihilation up to 100 TeV towards the Galactic Center with MAGIC
• Is the $W$-boson mass enhanced by the axion-like particle, dark photon, or chameleon dark energy?
• DmpIRFs and DmpST: DAMPE Instrument Response Functions and Science Tools for Gamma-Ray Data Analysis
• Search for gamma-ray line signals around the black hole at the galactic center with DAMPE observation
• Search for line-like and box-shaped spectral features from nearby galaxy clusters with 11.4 years of Fermi LAT data
• Search for line signal candidates in the Fermi-LAT data

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