Decaying fermionic warm dark matter and XENON1T electronic recoil excess

Abstract

In the light of the recently observed XENON1T electronic recoil (ER) data, we investigate the possibility of constraining the parameter space of a generic fermionic warm dark matter (WDM), decaying into a standard model (SM) neutrino and a photon. The photon as a decay product, when produced inside the XENON1T chamber, interacts with an electron of a xenon (Xe) atom, leading to a contribution in the observed ER data. We add this dark matter (DM) induced signal over the standard background (${\mathrm{B}}_0$) considered by the XENON1T collaboration and perform a ${\chi }^2$ fit against the XENON1T data to obtain the best-fit values of the DM decay width and the associated $95\%$ confidence level (C.L.) band for DM mass ($m_{\chi }$) varied in the range $2-60$ keV. Additionally, we have extended our analysis by including two other background models available in the literature and in each case, the corresponding limits on the DM decay width are estimated for DM mass ($m_{\chi }$) in the domain $2-18$ keV. By comparing the constraints, obtained by fitting the XENON1T data, with the upper limits arising from various existing astrophysical and cosmological observations, we find that, for the background model ${\mathrm{B}}_0$, a fair amount of the DM parameter space is allowed at $95\%$ C.L. for DM masses outside the range $3.5\mathrm{keV}\lesssim m_{\chi }\lesssim 8.5\mathrm{keV}$. However, in case of other two background models, reasonable parts of the DM parameter space are favoured at $95\%$ C.L. by all astrophysical data for all DM masses in the range $2-18$ keV.

arXiv comment9 pages, 4 figures; text modified, figures modified, current version matches with the version published in Phys.Dark Univ

References in corpus (49)

• Planck 2015 results. XIII. Cosmological parameters
• Theories with Gauge-Mediated Supersymmetry Breaking
• The $\nu$MSM, Dark Matter and Baryon Asymmetry of the Universe
• An Overview of the Performance and Scientific Results from the Chandra X-Ray Observatory (CXO)
• The Chandra Source Catalog
• New Constraints on the free-streaming of warm dark matter from intermediate and small scale Lyman-$\alpha$ forest data
• Excess Electronic Recoil Events in XENON1T
• The Spectrum of Diffuse Cosmic Hard X-Rays Measured with HEAO-1
• On the local dark matter density
• Constraining Light Dark Matter with Diffuse X-Ray and Gamma-Ray Observations
• The XENON1T Dark Matter Experiment
• Lightest sterile neutrino abundance within the nuMSM
• Gravitino Dark Matter without R-parity
• Constraints on sterile neutrino as a dark matter candidate from the diffuse X-ray background
• Dwarf galaxy annihilation and decay emission profiles for dark matter experiments
• New Constraints on Sterile Neutrino Dark Matter from $NuSTAR$ M31 Observations
• (Almost) Closing the $\nu$MSM Sterile Neutrino Dark Matter Window with NuSTAR
• New limits on dark photons from solar emission and keV scale dark matter
• Constraining Sterile Neutrino Warm Dark Matter with Chandra Observations of the Andromeda Galaxy
• XENON1T excess from anomaly-free ALP dark matter and its implications for stellar cooling anomaly
• Boosted Dark Matter Interpretation of the XENON1T Excess
• X-ray line signal from 7 keV axino dark matter decay
• Dark Matter and the XENON1T electron recoil excess
• Re-examining the Solar Axion Explanation for the XENON1T Excess
• Axinos as Dark Matter Particles
• X-ray line signal from decaying axino warm dark matter
• Large Neutrino Magnetic Moments in the Light of Recent Experiments
• NuSTAR Hard X-ray Survey of the Galactic Center Region II: X-ray Point Sources
• Neutrino self-interactions and XENON1T electron recoil excess
• Inverse Primakoff Scattering as a Probe of Solar Axions at Liquid Xenon Direct Detection Experiments
• Searching for Dark Matter with X-ray Observations of Local Dwarf Galaxies
• X-ray lines from R-parity violating decays of keV sparticles
• Can Nonstandard Neutrino Interactions explain the XENON1T spectral excess?
• XENON1T signal from transition neutrino magnetic moments
• 3.5 keV x-ray line from decaying gravitino dark matter
• XENON1T Anomaly and its Implication for Decaying Warm Dark Matter
• Dark Matter $Z^{\prime }$ and XENON1T Excess from $U(1{)}_X$ Extended Standard Model
• Hidden Photon Dark Matter in the Light of XENON1T and Stellar Cooling
• Gravitational Production of Hidden Photon Dark Matter in Light of the XENON1T Excess
• XENON1T Anomaly: A Light $Z^{\prime }$
• Reionization and dark matter decay
• XENON1T solar axion and the Higgs boson emerging from the dark
• XENON1T observes tritium
• 7.1 keV sterile neutrino constraints from X-ray observations of 33 clusters of galaxies with Chandra ACIS
• Galactic Origin of Relativistic Bosons and XENON1T Excess
• Young Accreting Compact Objects in M31: The Combined Power of NuSTAR, Chandra, and Hubble
• The KSVZ Axion and Pseudo-Nambu-Goldstone Boson Models for the XENON1T Excess
• Constraints on axino warm dark matter from X-ray observation at the Chandra telescope and SPI
• NuSTAR view of the central region of M 31

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