Zobrazeno 1 - 10
of 98
pro vyhledávání: '"Lopez Honorez, Laura"'
Autor:
Lopez-Honorez, Laura
The redshifted 21cm signal from the Cosmic Dawn is expected to provide unprecedented insights into early Universe astrophysics and cosmology. Here, we briefly summarize how decaying dark matter can heat the intergalactic medium before the first galax
Externí odkaz:
http://arxiv.org/abs/2406.15378
Publikováno v:
JCAP 01 (2024) 005
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 heat the intergalactic medium before the first galaxies, leaving a disti
Externí odkaz:
http://arxiv.org/abs/2308.16656
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 sub-keV dark matter and extend previous bounds from Lyman-$\alpha$ obs
Externí odkaz:
http://arxiv.org/abs/2303.07426
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 signals to be expected at e.g. collider experiments. In these proceedi
Externí odkaz:
http://arxiv.org/abs/2212.12377
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 distributions arising from freeze-in and superWIMP production as well
Externí odkaz:
http://arxiv.org/abs/2112.08853
Publikováno v:
JCAP 03 (2022) 041
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-$\alpha$ forest observations for both cases, basing ourselves on a reinterpretation
Externí odkaz:
http://arxiv.org/abs/2111.09321
Publikováno v:
JHEP 05 (2021) 234
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 cosmological history, these decays happen inside the detector only if the d
Externí odkaz:
http://arxiv.org/abs/2102.06221
Publikováno v:
JCAP 08 (2020) 045
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 hole temperature, it could be warm enough to be subject to structure fo
Externí odkaz:
http://arxiv.org/abs/2004.14773
Autor:
Lopez-Honorez, Laura, Mena, Olga, Palomares-Ruiz, Sergio, Villanueva-Domingo, Pablo, Witte, Samuel J.
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 constraining such scenarios requires exploiting observations that span
Externí odkaz:
http://arxiv.org/abs/2004.00013
Autor:
Fuks, Benjamin, Giacchino, Federica, Lopez-Honorez, Laura, Tytgat, Michel H. G., Vandecasteele, Jérôme
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 simplified version of a composite setup in which the scalar field, tha
Externí odkaz:
http://arxiv.org/abs/1911.11677