3 papers
hep-ph2026
The vacuum stability and the hierarchy problem in a fermionic dark matter model
Mojtaba Hosseini
We consider an extension to the Standard Model (SM) with four new fields including scalar(), spinor() and vector() under new gauge group in the hidden sec…
hep-ph2025
Limitations of Freeze-in WIMP Dark Matter from Supercooled Phase Transitions
Seyed Yaser Ayazi, Mojtaba Hosseini
We revisit the possibility of producing Weakly Interacting Massive Particle (WIMP) dark matter via a freeze-in mechanism triggered by a supercooled first-order phase transition (FO…
hep-ph2024
Gravitational wave signatures of first-order phase transition in two-component dark matter model
Seyed Yaser Ayazi, Mojtaba Hosseini, Rouzbeh Rouzbehi
Here, we consider a classically scale-invariant extension of the Standard Model (SM) with two-component dark matter (DM) candidates, including a Dirac spinor and a scalar DM. We pr…