5 papers
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 secto…
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…
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…
Gravitational wave in a filtered vector dark matter model
Mojtaba Hosseini, Seyed Yaser Ayazi, Ahmad Mohamadnejad
We consider a first order phase transition (FOPT) for a Vector Dark Matter (VDM) in the early universe in which its mass may partially arise from such mechanism in the hidden secto…
Vector dark matter and LHC constraints, including a 95 GeV light Higgs boson
Seyed Yaser Ayazi, Mojtaba Hosseini, Saeid Paktinat Mehdiabadi +1
We study LHC searches for an extension of the Standard Model (SM) by exploiting an additional Abelian gauge symmetry and a complex scalar Higgs portal. As the scalar is ch…