Indications for a nonzero lepton asymmetry from extremely metal-poor galaxies
The recent measurement of helium-4 from the near-infrared spectroscopy of extremely metal-
poor galaxies by the Subaru Survey may point to a new puzzle in the early Universe. We …
poor galaxies by the Subaru Survey may point to a new puzzle in the early Universe. We …
[HTML][HTML] PRyMordial: the first three minutes, within and beyond the standard model
In this work we present PRyMordial: A package dedicated to efficient computations of
observables in the Early Universe with the focus on the cosmological era of Big Bang …
observables in the Early Universe with the focus on the cosmological era of Big Bang …
GRB 221009A gamma rays from the radiative decay of heavy neutrinos?
AY Smirnov, A Trautner - Physical Review Letters, 2023 - APS
We consider a mechanism that causes a decrease in the attenuation of high energy gamma-
ray flux from gamma ray burst GRB 221009A. The mechanism is based on the existence of a …
ray flux from gamma ray burst GRB 221009A. The mechanism is based on the existence of a …
Thermal dark matter with low-temperature reheating
N Bernal, K Deka, M Losada - Journal of Cosmology and …, 2024 - iopscience.iop.org
We explore the production of thermal dark matter (DM) candidates (WIMPs, SIMPs, ELDERs
and Cannibals) during cosmic reheating. Assuming a general parametrization for the scaling …
and Cannibals) during cosmic reheating. Assuming a general parametrization for the scaling …
Optomechanical dark matter instrument for direct detection
We propose the Optomechanical Dark-matter Instrument (ODIN), based on a new method for
the direct detection of low-mass dark matter. We consider dark matter interacting with …
the direct detection of low-mass dark matter. We consider dark matter interacting with …
New constraints on the dark side of non-standard interactions from reactor neutrino scattering data
PB Denton, J Gehrlein - Physical Review D, 2022 - APS
In neutrino oscillation physics, numerous exact degeneracies exist under the name LMA-
Dark. These degeneracies make it impossible to determine the sign of Δ m 31 2, known as …
Dark. These degeneracies make it impossible to determine the sign of Δ m 31 2, known as …
Constraints on new physics around the MeV scale with cosmological observations
S Deng, L Bian - Physical Review D, 2023 - APS
We investigate the joint effect of cosmological phase transitions, thermal light dark matter,
and lepton asymmetry on big bang nucleosynthesis and the cosmic microwave background …
and lepton asymmetry on big bang nucleosynthesis and the cosmic microwave background …
From WIMPs to FIMPs: Impact of Early Matter Domination
J Silva-Malpartida, N Bernal, J Jones-Pérez… - arXiv preprint arXiv …, 2024 - arxiv.org
In the context of non-standard cosmologies, an early matter-dominated (EMD) era can
significantly alter the conventional dark matter (DM) genesis. In this work, we reexamine the …
significantly alter the conventional dark matter (DM) genesis. In this work, we reexamine the …
Sub-GeV dark matter annihilation: limits from Milky Way observations with INTEGRAL
From 16 years of INTEGRAL/SPI γ-ray observations, we derive bounds on annihilating light
dark matter particles in the halo of the Milky Way up to masses of about 300 MeV. We test …
dark matter particles in the halo of the Milky Way up to masses of about 300 MeV. We test …
A global analysis of resonance-enhanced light scalar dark matter
T Binder, S Chakraborti, S Matsumoto… - Journal of High Energy …, 2023 - Springer
A bstract We study a minimal model for a light scalar dark matter, requiring a light scalar
mediator to address the core-cusp problem and interact with the standard model particles …
mediator to address the core-cusp problem and interact with the standard model particles …