134 citations · 421 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…
Conformal little Higgs models
Aqeel Ahmed, Manfred Lindner, Philipp Saake
Little Higgs models address the hierarchy problem by identifying the SM Higgs doublet as pseudo-Nambu--Goldstone bosons (pNGB) arising from global symmetries with collective breaki…
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…
Higgs boson induced reheating and ultraviolet frozen-in dark matter
Aqeel Ahmed, Bohdan Grzadkowski, Anna Socha
A reheating phase in the early universe is an essential part of all inflationary models during which not only the Standard Model (SM) quanta are produced but it can also shed light…
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…