782 citations · 7.1k across the 115 of their papers we have counts for
102 papers · 1 filter
Dark photon dark matter from flattened axion potentials
Hong-Yi Zhang, Paola Arias, Andrew Cheek +3
Dark photons can be resonantly produced in the early universe via their coupling to an oscillating axion field. However, this mechanism typically requires large axion--dark photon…
Extending preferred axion models via heavy-quark induced early matter domination
Andrew Cheek, Jacek K. Osiński, Leszek Roszkowski
We examine the cosmological consequences of the heavy quarks in KSVZ-type axion models. We find that their presence often causes an early matter domination phase, altering the evol…
Revisiting signatures of thermal axions in nonstandard cosmologies
Paola Arias, Nicolás Bernal, Jacek K. Osiński +2
We revisit the formation of a thermal population of hadronic axions in nonstandard cosmologies, in light of the recent developments in obtaining continuous and smooth interaction r…
Dark matter production through a non-thermal flavon portal
Andrew Cheek, Jacek K. Osiński, Leszek Roszkowski +1
The Froggatt-Nielsen (FN) mechanism provides an attractive way of generating the determined fermion mass hierarchy and quark mixing matrix elements in the Standard Model (SM). Here…
Dark Matter Axions in the Early Universe with a Period of Increasing Temperature
Paola Arias, Nicolás Bernal, Jacek K. Osiński +1
We consider the production of axion dark matter through the misalignment mechanism in the context of a nonstandard cosmological history involving early matter domination by a scala…
Indirect detection of long-lived particles in a rich dark sector with a dark vector portal
Krzysztof Jodłowski, Leszek Roszkowski, Sebastian Trojanowski
Simplified models of light new physics provide a convenient benchmark for experimental searches for new physics signatures, including dark matter (DM). However, additional detectio…
New opportunities for axion dark matter searches in nonstandard cosmological models
Paola Arias, Nicolás Bernal, Dimitrios Karamitros +3
We study axion dark matter production from a misalignment mechanism in scenarios featuring a general nonstandard cosmology. Before the onset of Big Bang nucleosynthesis, the energy…
GUT-constrained supersymmetry and dark matter in light of the new determination
Manimala Chakraborti, Leszek Roszkowski, Sebastian Trojanowski
The recent confirmation by the Fermilab-based Muon g-2 experiment of the anomaly has important implications for allowed particle spectra in softly broken supersymmetry (S…
Simple and statistically sound recommendations for analysing physical theories
Shehu S. AbdusSalam, Fruzsina J. Agocs, Benjamin C. Allanach +72
Physical theories that depend on many parameters or are tested against data from many different experiments pose unique challenges to statistical inference. Many models in particle…
Frozen-in fermionic singlet dark matter in non-standard cosmology with a decaying fluid
Paola Arias, Dimitrios Karamitros, Leszek Roszkowski
We perform a detailed study of dark matter production via freeze-in under the assumption that some fluid dominates the early Universe before depositing its energy to the plasma cau…
Forbidden Freeze-In
Luc Darmé, Andrzej Hryczuk, Dimitrios Karamitros +1
We study the importance of a frozen-in dark matter production regime, where the dark matter particle is produced via kinematically forbidden decays that arise from significant ther…
Impact of uncertainties in the halo velocity profile on direct detection of sub-GeV dark matter
Andrzej Hryczuk, Ekaterina Karukes, Leszek Roszkowski +1
We use the state-of-the-art high-resolution cosmological simulations by IllustrisTNG to derive the velocity distribution and local density of dark matter in galaxies like our Milky…
Extending the reach of FASER, MATHUSLA, and SHiP towards smaller lifetimes using secondary particle production
Krzysztof Jodłowski, Felix Kling, Leszek Roszkowski +1
Many existing or proposed intensity-frontier search experiments look for decay signatures of light long-lived particles (LLPs), highly displaced from the interaction point, in a di…
Forbidden frozen-in dark matter
Luc Darmé, Andrzej Hryczuk, Dimitrios Karamitros +1
We examine and point out the importance of a regime of dark matter production through the freeze-in mechanism that results from a large thermal correction to a decaying mediator pa…
Testing dark matter with Cherenkov light -- prospects of H.E.S.S. and CTA for exploring minimal supersymmetry
Andrzej Hryczuk, Krzysztof Jodłowski, Emmanuel Moulin +4
We provide an updated and improved study of the prospects of the H.E.S.S. and Cherenkov Telescope Array (CTA) experiments in testing neutralino dark matter in the Minimal Supersymm…
Signatures of dark Higgs boson in light fermionic dark matter scenarios
Luc Darmé, Soumya Rao, Leszek Roszkowski
Thermal dark matter scenarios based on light (sub-GeV) fermions typically require the presence of an extra dark sector containing both a massive dark photon along with a dark Higgs…
Flavor anomalies and dark matter in SUSY with an extra U(1)
Luc Darmé, Kamila Kowalska, Leszek Roszkowski +1
Motivated by the recent anomalies in transitions that emerged at LHCb, we consider a model with an gauge symmetry and additional vector-like fermions. W…
Light dark sector at colliders and fixed target experiments
Luc Darmé, Soumya Rao, Leszek Roszkowski
Minimal scenarios with light (sub-GeV) thermal dark matter are usually accompanied by a correspondingly light "dark sector". Taking as an example a simple fermionic dark matter mod…
Light dark Higgs boson in minimal sub-GeV dark matter scenarios
Luc Darmé, Soumya Rao, Leszek Roszkowski
Minimal scenarios with light (sub-GeV) dark matter whose relic density is obtained from thermal freeze-out must include new light mediators. In particular, a very well-motivated ca…
Impact of LHC data on muon solutions in vector-like extension of the Constrained MSSM
Arghya Choudhury, Soumya Rao, Leszek Roszkowski
The long-standing discrepancy between the experimental determination by the Muon Collaboration at Brookhaven and the Standard Model predictions for the anomalous magnetic mom…
WIMP dark matter candidates and searches - current status and future prospects
Leszek Roszkowski, Enrico Maria Sessolo, Sebastian Trojanowski
We review several current aspects of dark matter theory and experiment. We overview the present experimental status, which includes current bounds and recent claims and hints of a…
Blind Spots for Direct Detection with Simplified DM Models and the LHC
Arghya Choudhury, Kamila Kowalska, Leszek Roszkowski +2
Using the existing simplified model framework, we build several dark matter models which have suppressed spin-independent scattering cross section. We show that the scattering cros…
Towards understanding thermal history of the Universe through direct and indirect detection of dark matter
Leszek Roszkowski, Sebastian Trojanowski, Krzysztof Turzynski
We examine the question to what extent prospective detection of dark matter by direct and indirect- detection experiments could shed light on what fraction of dark matter was gener…
Muon g-2 and related phenomenology in constrained vector-like extensions of the MSSM
Arghya Choudhury, Luc Darmé, Leszek Roszkowski +2
We analyze two minimal supersymmetric constrained models with low-energy vector-like matter preserving gauge coupling unification. In one we add to the MSSM spectrum a pair of 5-pl…