Comments on bosonic super-WIMPs search experiments

Abstract

Bosonic super-WIMPs, including pseudoscalar and vector particles, are dark matter candidates. Until now, many underground experiments searches for super-WIMPs have been performed in the mass range of a few $keV/{\mathrm{c}}^2$ to 1 $MeV/{\mathrm{c}}^2$. All these searches utilize the absorption process of a super-WIMP by a target atom in the detector, which is similar to the photoelectric effect. In this study, we consider another process, namely, a Compton-like process. As an example, we compare the cross-section of a germanium atom for the absorption process with that of a Compton-like process. Our findings indicate that the cross-section for the Compton-like process becomes dominant, compared to that for the absorption process for mass above approximately 150 $keV/{\mathrm{c}}^2$ for both pseudoscalar and vector super-WIMPs. In particular, the cross-section for the Compton-like process for a vector super-WIMP becomes increasingly greater than that for the absorption process by an order of magnitude to two orders of magnitude in the 400 $keV/{\mathrm{c}}^2$ to 1 $MeV/{\mathrm{c}}^2$ mass range, respectively. By including the Compton-like process, which has not been used in any other super-WIMP search experiment, the experimental upper limits can be improved.

References in corpus (19)

• Dark Matter Candidates from Particle Physics and Methods of Detection
• Sterile Neutrinos as Dark Matter
• Secluded WIMP Dark Matter
• Massive sterile neutrinos as warm Dark Matter
• Bosonic super-WIMPs as keV-scale dark matter
• SuperWIMP Dark Matter Signals from the Early Universe
• Dark Matter Evidence, Particle Physics Candidates and Detection Methods
• First Searches for Axions and Axion-Like Particles with the LUX Experiment
• Limits on Axion Couplings from the first 80-day data of PandaX-II Experiment
• New limits on Bosonic Dark Matter, Solar Axions, Pauli Exclusion Principle Violation, and Electron Decay from the Majorana Demonstrator
• Searches for electron interactions induced by new physics in the EDELWEISS-III germanium bolometers
• Validity of the Weizsäcker-Williams Approximation and the Analysis of Beam Dump Experiments: Production of an axion, a dark photon, or a new axial-vector boson
• Constraints on dark photons and axion-like particles from SuperCDMS Soudan
• Search for dark matter in the form of hidden photons and axion-like particles in the XMASS detector
• Lyman-α Forest and Cosmic Weak Lensing in a Warm Dark Matter Universe
• The first search for bosonic super-WIMPs with masses up to 1 MeV/c${}^2$ with GERDA
• Search for Bosonic Super-WIMP Interactions with the XENON100 Experiment
• Dark-Photon Search using Data from CRESST-II Phase 2
• A search for solar axion induced signals with COSINE-100