66 citations · 317 across the 11 of their papers we have counts for
11 papers
Strong Dark Matter Self-Interaction from a Stable Scalar Mediator
Mateusz Duch, Bohdan Grzadkowski, Da Huang
In face of the small-scale structure problems of the collisionless cold dark matter (DM) paradigm, a popular remedy is to introduce a strong DM self-interaction which can be genera…
Gauge-Independent Approach to Resonant Dark Matter Annihilation
Mateusz Duch, Bohdan Grzadkowski, Apostolos Pilaftsis
In spontaneously broken gauge theories, transition amplitudes describing dark-matter (DM) annihilation processes through a resonance may become highly inaccurate close to a product…
One-loop contribution to dark matter-nucleon scattering in the pseudoscalar dark matter model
Duarte Azevedo, Mateusz Duch, Bohdan Grzadkowski +3
Recent dark matter (DM) direct searches place very stringent constraints on the possible DM candidates proposed in extensions of the Standard Model. There are however models where…
Testing scalar versus vector dark matter
Duarte Azevedo, Mateusz Duch, Bohdan Grzadkowski +3
We investigate and compare two simple models of dark matter (DM): a vector and a scalar DM model. Both models require the presence of two physical Higgs bosons and whic…
Strongly self-interacting vector dark matter via freeze-in
Mateusz Duch, Bohdan Grzadkowski, Da Huang
We study a vector dark matter (VDM) model in which the dark sector couples to the Standard Model sector via a Higgs portal. If the portal coupling is small enough the VDM can be pr…
Multi-Component Dark Matter: the vector and fermion case
Aqeel Ahmed, Mateusz Duch, Bohdan Grzadkowski +1
Multi-component dark matter scenarios constitute natural extensions of standard single-component setups and offer attractive new dynamics that could be adopted to solve various puz…
Resonance enhancement of dark matter interactions: the case for early kinetic decoupling and velocity dependent resonance width
Mateusz Duch, Bohdan Grzadkowski
Motivated by the possibility of enhancing dark matter (DM) self-interaction cross-section , we have revisited the issue of DM annihilation through a Breit-Wigner reso…
Vacuum stability from vector dark matter
Mateusz Duch, Bohdan Grzadkowski, Moritz McGarrie
We study a model of vector dark matter with the complex scalar Higgs portal. Renormalisation group equations at the 2-loop level are used to analyse perturbativity and stability of…
A stable Higgs portal with vector dark matter
Mateusz Duch, Bohdan Grzadkowski, Moritz McGarrie
We explore an extension of the Standard Model by an additional U (1) gauge group and a complex scalar Higgs portal. As the scalar is charged under this gauge factor this simple mod…
Classification of effective operators for interactions between the Standard Model and dark matter
Mateusz Duch, Bohdan Grzadkowski, Jose Wudka
We construct a basis for effective operators responsible for interactions between the Standard Model and a dark sector composed of particles with spin less or equal to 1. Redundant…
Effective Operators for Dark Matter Interactions
Mateusz Duch
The aim of this thesis is to determine possible interactions between the Standard Model with right-chiral neutrinos and a sector of dark matter composed of a real scalar, left- and…