The absence of any confirmative signals from extensive DM searching motivates us to go
beyond the conventional WIMPs scenario. The feebly interacting massive particles (FIMPs) …

We present a thorough discussion of light dark matter produced via freeze-in in two-body
decays A→ B DM. If A and B are quasi-degenerate, the dark matter particle has a cold …

A bstract In this work, we explore a well motivated beyond the Standard Model scenario,
namely, R-parity violating Supersymmetry, in the context of light neutrino masses and …

We consider the freeze-in production of 7 keV axino dark matter (DM) in the supersymmetric
Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) model in light of the 3.5 keV line excess. The …

A feebly interacting massive particle (FIMP), contrasting with a weakly interacting massive
particle (WIMP), is an intriguing dark matter (DM) candidate. Light (keV-scale) FIMP DM is of …

Axino and gravitino are promising candidates to solve the dark matter (DM) problem in the
framework of supersymmetry. In this work, we assume that the axino is the lightest …

In R-parity violating supersymmetry, the gravitino as the lightest supersymmetric particle
(LSP) is a good candidate for dark matter, with the interesting characteristic to be detectable …

In 2014, several groups reported hints for a yet unidentified line in astrophysical x-ray
signals from galaxies and galaxy clusters at an energy of 3.5 keV. While it is not unlikely that …

Freeze-in mechanism provides robust dark matter production in the early Universe. Because
of its feeble interactions, freeze-in dark matter leaves signals at colliders which are often …

The UμνSSM is a U (1)'extension of the μνSSM supersymmetric model, where baryon-
number-violating operators as well as explicit mass terms are forbidden, and the potential …