228 citations · 1.8k across the 34 of their papers we have counts for
35 papers
Reionization, UV Luminosity and 21cm Sensitivity to Primordial Magnetic Fields: Impact of Energy Losses
Gaétan Facchinetti, Alexander Korochkin, Laura Lopez-Honorez +1
Magnetic fields with field strengths between G and a few Nanogauss are expected to exist today in the intergalactic medium (IGM). Their origin is unknown, but may be of…
Non-Cold Dark Matter from Memory-Burdened Primordial Black Holes
Valentin Thoss, Laura Lopez-Honorez, Florian Kühnel +1
Non-cold dark matter particles can arise from the evaporation of primordial black holes (PBHs). In this paper, we further investigate how the memory-burden effect, which delays the…
Constraining long-lived dark sector particles with CMB and Lyman-
Laura Lopez-Honorez, Sonali Verma
We use measurements of the intergalactic medium (IGM) temperature from the Lyman- forest to place new limits on models in which long-lived dark sector (DS) particles, with lifet…
Minimal Dark Matter: Generalized Framework and Direct-Detection Sensitivity
Spencer Griffith, Juri Smirnov, Laura Lopez-Honorez +1
Minimal electroweak dark matter models are compelling due to their simplicity, though calculations of their freezeout abundance are complicated by nonperturbative effects due to So…
21 cm Cosmology Sensitivity to Small-Scale Structure: Warm vs Neutrino-Interacting Dark Matter
Virgile Dandoy, Christian Döring, Gaétan Facchinetti +2
The cm signal originating from Cosmic Dawn to the Epoch of Reionisation is highly sensitive to the processes governing star formation in the early universe as well as new phy…
t-channel dark matter at the LHC -- a whitepaper
Chiara Arina, Benjamin Fuks, Luca Panizzi +67
This report, summarising work achieved in the context of the LHC Dark Matter Working Group, investigates the phenomenology of -channel dark matter models, spanning minimal setup…
21cm signal sensitivity to dark matter decay
Gaétan Facchinetti, Laura Lopez-Honorez, Yuxiang Qin +1
The redshifted 21cm signal from the Cosmic Dawn is expected to provide unprecedented insights into early Universe astrophysics and cosmology. Here we explore how dark matter can he…
CMB and Lyman- constraints on dark matter decays to photons
Francesco Capozzi, Ricardo Z. Ferreira, Laura Lopez-Honorez +1
Dark matter energy injection in the early universe modifies both the ionization history and the temperature of the intergalactic medium. In this work, we improve the CMB bounds on…
Dark matter from WIMP to FIMP over three regimes: Cosmology versus Colliders
Laura Lopez-Honorez, Quentin Decant, Sam Junius +1
Dark matter models can give rise to specific signatures at particle physics experiments or in cosmology. The details of the cosmological history can also influence the new physics…
Cosmological imprints of non-thermalized dark matter
Quentin Decant, Jan Heisig, Deanna C. Hooper +1
Non-thermalized dark matter is a cosmologically viable alternative to the widely studied weakly interacting massive particle. We study the evolution of the dark matter phase-space…
Lyman- constraints on freeze-in and superWIMPs
Quentin Decant, Jan Heisig, Deanna C. Hooper +1
Dark matter (DM) from freeze-in or superWIMP production is well known to imprint non-cold DM signatures on cosmological observables. We derive constraints from Lyman- forest obs…
Displaced new physics at colliders and the early universe before its first second
Lorenzo Calibbi, Francesco D'Eramo, Sam Junius +2
Displaced vertices at colliders, arising from the production and decay of long-lived particles, probe dark matter candidates produced via freeze-in. If one assumes a standard cosmo…
Non-Cold Dark Matter from Primordial Black Hole Evaporation
Iason Baldes, Quentin Decant, Deanna C. Hooper +1
Dark matter coupled solely gravitationally can be produced through the decay of primordial black holes in the early universe. If the dark matter is lighter than the initial black h…
Variations in fundamental constants at the cosmic dawn
Laura Lopez-Honorez, Olga Mena, Sergio Palomares-Ruiz +2
The observation of space-time variations in fundamental constants would provide strong evidence for the existence of new light degrees of freedom in the theory of Nature. Robustly…
Strong dynamics and dark matter: investigating a minimal setup
Benjamin Fuks, Federica Giacchino, Laura Lopez-Honorez +2
We discuss the phenomenology of a dark matter scenario in which we extend the Standard Model by a real scalar particle and a vector-like heavy quark. Such a model can be seen as a…
A feeble window on leptophilic dark matter
Sam Junius, Laura Lopez-Honorez, Alberto Mariotti
In this paper we study a leptophilic dark matter scenario involving feeble dark matter coupling to the Standard Model (SM) and compressed dark matter-mediator mass spectrum. We con…
Dark Matter microphysics and 21 cm observations
Laura Lopez-Honorez, Olga Mena, Pablo Villanueva-Domingo
Dark matter interactions with massless or very light Standard Model particles, as photons or neutrinos, may lead to a suppression of the matter power spectrum at small scales and o…
Singlet-Doublet Dark Matter Freeze-in: LHC displaced signatures versus cosmology
Lorenzo Calibbi, Laura Lopez-Honorez, Steven Lowette +1
We study the Singlet-Doublet dark matter model in the regime of feeble couplings, where the dark matter abundance is obtained via the freeze-in mechanism. As a consequence of the s…
A fresh look into the interacting dark matter scenario
Miguel Escudero, Laura Lopez-Honorez, Olga Mena +2
The elastic scattering between dark matter particles and radiation represents an attractive possibility to solve a number of discrepancies between observations and standard cold da…
Warm dark matter and the ionization history of the Universe
Laura Lopez-Honorez, Olga Mena, Sergio Palomares-Ruiz +1
In warm dark matter scenarios structure formation is suppressed on small scales with respect to the cold dark matter case, reducing the number of low-mass halos and the fraction of…
The 21 cm signal and the interplay between dark matter annihilations and astrophysical processes
Laura Lopez-Honorez, Olga Mena, Ángeles Moliné +2
Future dedicated radio interferometers, including HERA and SKA, are very promising tools that aim to study the epoch of reionization and beyond via measurements of the 21 cm signal…
Primordial Power Spectrum features and constraints
Stefano Gariazzo, Laura Lopez-Honorez, Olga Mena
The simplest models of inflation predict small non-gaussianities and a featureless power spectrum. However, there exist a large number of well-motivated theoretical scenarios in wh…
Dark Matter Constraints on Composite Higgs Models
Nayara Fonseca, Renata Zukanovich Funchal, Andre Lessa +1
In composite Higgs models the pseudo-Nambu-Goldstone Boson (pNGB) nature of the Higgs field is an interesting alternative for explaning the smallness of the electroweak scale with…
Current constraints on early and stressed dark energy models and future 21 cm perspectives
Maria Archidiacono, Laura Lopez-Honorez, Olga Mena
Despite the great progress of current cosmological measurements, the nature of the dominant component of the universe, coined dark energy, is still an open question. Early Dark Ene…