35 citations · 217 across the 18 of their papers we have counts for
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Fermion Dark Matter Effect on Electroweak Phase Transition
Soudeh Mirzaie, Karim Ghorbani, Parsa Ghorbani
The addition of extra scalars to the Standard Model (SM) of particle physics enriches the vacuum structure and consequently gives rise to strong first-order phase transitions (EWPT…
Loop quantum effects on direct detection prediction in two-scalar dark matter scenario
Karim Ghorbani, Parsa Ghorbani
We investigate the effect of quantum corrections on the elastic scattering cross section of dark matter off nucleus in two-scalar dark matter model. Among two extra singlet scalars…
Gravitational waves from thermal heavy scalar dark matter
Parsa Ghorbani
We propose a gauge singlet scalar with mass around 1-100 TeV as a thermal heavy dark matter candidate along with a dilaton as a Higgs portal mediator in a dimensionless scalar exte…
Two pseudo-Goldstone bosons in the Gildener-Weinberg model
Parsa Ghorbani
In a dimensionless multi-scalar extension of the Standard Model, Gildener and Weinberg assumed that along a flat direction, there is only one classically massless scalar, known as…
The hierarchy problem and the vacuum stability in two-scalar dark matter model
Zohre Habibolahi, Karim Ghorbani, Parsa Ghorbani
We consider an extension to the Standard Model (SM) with two extra real singlet scalars which interact with the SM Higgs particle. The lighter scalar is taken as the dark matter (D…
Dark Matter and Muon Anomaly via Scale Symmetry Breaking
Parsa Ghorbani
The Standard Model (SM) without the Higgs mass term is scale invariant. Gildener and Weinberg generalized the scale invariant standard model (SISM) by including the multiplication…
-Boson Mass Anomaly from Scale Invariant 2HDM
Karim Ghorbani, Parsa Ghorbani
The recently reported measurement of the -boson mass by CDF-II collaboration is significantly heavier than that of the Standard Model prediction. We study this anomaly in the sc…
Vacuum Stability vs. Positivity in Real Singlet Scalar Extension of the Standard Model
Parsa Ghorbani
We assume a generic real singlet scalar extension of the Standard Model living in the vacuum at the electroweak scale with GeV and being respectively the Higgs…
Vacuum structure and electroweak phase transition in singlet scalar dark matter
Parsa Ghorbani
In the presence of a real singlet scalar field with symmetry in addition to the Higgs field in the Standard Model, we analytically investigate all possible one-step…
Scalar gauge dynamics and Dark Matter
Dario Buttazzo, Luca Di Luzio, Parsa Ghorbani +5
We consider theories with one gauge group (SU, SO or Sp) and one scalar in a two-index representation. The renormalizable action often has accidental symmetries (such as global U(1…
A Simultaneous Study of Dark Matter and Phase Transition: Two-Scalar Scenario
Karim Ghorbani, Parsa Hossein Ghorbani
The simplest extension of the Standard Model by only one real singlet scalar can explain the observed dark matter relic density while giving simultaneously a strongly first-order e…
Leading Loop Effects in Pseudoscalar-Higgs Portal Dark Matter
Karim Ghorbani, Parsa Hossein Ghorbani
We examine a model with a fermionic dark matter candidate having pseudoscalar interaction with the standard model particles where its direct detection elastic scattering cross sect…
Strongly First-Order Phase Transition in Real Singlet Scalar Dark Matter Model
Karim Ghorbani, Parsa Hossein Ghorbani
The extension of the standard model by a real gauge singlet scalar is the simplest but the most studied model with sometimes controversial ideas on the ability of the model to addr…
DAMPE Electron-Positron Excess in Leptophilic model
Karim Ghorbani, Parsa Hossein Ghorbani
Recently the DArk Matter Particle Explorer (DAMPE) has reported an excess in the electron-positron flux of the cosmic rays which is interpreted as a dark matter particle with the m…
Electroweak Phase Transition in Scale Invariant Standard Model
Parsa Hossein Ghorbani
In an extension to the scale invariant standard model by two real singlet scalars and in addition to the Higgs field, we investigate the strong first-order electroweak pha…
Electroweak Baryogenesis and Dark Matter via a Pseudoscalar vs. Scalar
Parsa Hossein Ghorbani
We study the electroweak baryogenesis in a fermionic dark matter scenario with a (pseudo)scalar being the mediator in the Higgs portal. It is discussed that the electroweak phase t…
The LHC upper bounds for , cross section on fermionic dark matter
Karim Ghorbani, Parsa Hossein Ghorbani
The ATLAS report in August 2016 provided an upper limit for the diboson and cross sections. We consider a pseudoscalar-mediated fermionic dark matter together wit…