160 citations · 434 across the 17 of their papers we have counts for
18 papers
Long-Lived-Particle Signals of a Composite Hidden Sector through the Neutrino Portal
Aqeel Ahmed, Zackaria Chacko, Niral Desai +4
We explore the signals of a scenario in which the composite states of a strongly coupled hidden sector couple to the Standard Model through the neutrino portal, giving rise to the…
General form of effective operators from hidden sectors
Aqeel Ahmed, Zackaria Chacko, Ina Flood +2
We perform a model-independent analysis of the dimension-six terms that are generated in the low energy effective theory when a hidden sector that communicates with the Standard Mo…
Composite Dark Matter and Neutrino Masses from a Light Hidden Sector
Aqeel Ahmed, Zackaria Chacko, Niral Desai +3
We study a class of models in which the particle that constitutes dark matter arises as a composite state of a strongly coupled hidden sector. The hidden sector interacts with the…
A Lighter QCD Axion from Anarchy
Fatemeh Elahi, Gilly Elor, Alexey Kivel +3
We introduce the Anarchic Axion, a class of axion models which solves the Strong CP problem within current nEDM constraints with a lighter than usual QCD axion, thus populating new…
Ultraviolet freeze-in dark matter through the dilaton portal
Aqeel Ahmed, Saereh Najjari
We study a class of models in which the Standard Model (SM) and dark matter (DM) belong to a conformal/scale-invariant theory at high energies. Scale invariance is spontaneously br…
A Minimal Model for Neutral Naturalness and pseudo-Nambu-Goldstone Dark Matter
Aqeel Ahmed, Saereh Najjari, Christopher B. Verhaaren
We outline a scenario where both the Higgs and a complex scalar dark matter candidate arise as the pseudo-Nambu-Goldstone bosons of breaking a global symmetry to . T…
A light dilaton at the LHC
Aqeel Ahmed, Alberto Mariotti, Saereh Najjari
In this paper, we explore the possibility that a light dilaton can be the first sign of new physics at the LHC. The dilaton could emerge in approximate scale invariant UV completio…
Dilaton portal in strongly interacting twin Higgs models
Aqeel Ahmed, Barry M. Dillon, Saereh Najjari
We consider a strongly interacting twin Higgs (SITH) model where an ultraviolet completion of twin Higgs mechanism is realized by a strongly coupled approximately scale invariant t…
Collider Signals of the Mirror Twin Higgs through the Hypercharge Portal
Zackaria Chacko, Can Kilic, Saereh Najjari +1
We consider the collider signals arising from kinetic mixing between the hypercharge gauge boson of the Standard Model and its twin counterpart in the Mirror Twin Higgs model, in t…
Discovering the Twin Higgs Boson with Displaced Decays
Can Kilic, Saereh Najjari, Christopher B. Verhaaren
The Twin Higgs mechanism keeps the scalar sector of the Standard Model (SM) natural while remaining consistent with the non-observation of new colored particles at the Large Hadron…
The CLIC Potential for New Physics
J. de Blas, R. Franceschini, F. Riva +100
The Compact Linear Collider (CLIC) is a mature option for the future of high energy physics. It combines the benefits of the clean environment of colliders with operation…
Testing the Scalar Sector of the Twin Higgs Model at Colliders
Zackaria Chacko, Can Kilic, Saereh Najjari +1
We consider Mirror Twin Higgs models in which the breaking of the global symmetry is realized linearly. In this scenario, the radial mode in the Higgs potential is present in the s…
Observability of Inert Scalars at the LHC
Majid Hashemi, Saereh Najjari
In this work we investigate the observability of Inert Doublet Model scalars at the LHC operating at the center of mass energy of 14 TeV. The signal production process is $pp \to A…
Production of Inert Scalars at the high energy colliders
Majid Hashemi, Maria Krawczyk, Saereh Najjari +1
We investigate the phenomenology of the light charged and neutral scalars in Inert Doublet Model at future colliders with center of mass energies of 0.5 and 1 TeV, and in…
Lepton Flavor Violation in the Standard Model with dimension 6 operators
Saereh Najjari
We investigate Lepton Flavor Violation (LFV) in the general extension of the Standard Model parametrized by the gauge invariant operators of dimension-6. We discuss 3-body charged…
Lepton Flavor Violation in the Standard Model with general Dimension-Six Operators
Andreas Crivellin, Saereh Najjari, Janusz Rosiek
We study lepton flavor observables in the Standard Model (SM) extended with all dimension- operators which are invariant under the SM gauge group. We calculate the complete one-…
in the Standard Model with general dimension 6 terms
Saereh Najjari
We investigate the possibility of lepton flavor violation in the decays , and as well as electric dipole moment and anomalous magnetic moment of charge…
Extracting the CP-violating phases of trilinear R-parity violating couplings from
Yasaman Farzan, Saereh Najjari
It has recently been shown that by measuring the transverse polarizations of the final particles in , it is possible to extract information on the phases of th…