254 citations · 2.7k across the 40 of their papers we have counts for
6 papers · 1 filter
Refined Bounds on MeV-scale Thermal Dark Sectors from BBN and the CMB
Nashwan Sabti, James Alvey, Miguel Escudero +2
New light states thermally coupled to the Standard Model plasma alter the expansion history of the Universe and impact the synthesis of the primordial light elements. In this work,…
Improved BBN Constraints on the Variation of the Gravitational Constant
James Alvey, Nashwan Sabti, Miguel Escudero +1
Big Bang Nucleosynthesis (BBN) is very sensitive to the cosmological expansion rate. If the gravitational constant took a different value during the nucleosynthesis epoch than…
A CMB Search for the Neutrino Mass Mechanism and its Relation to the Tension
Miguel Escudero, Samuel J. Witte
The majoron, a pseudo-Goldstone boson arising from the spontaneous breaking of global lepton number, is a generic feature of many models intended to explain the origin of the small…
Mediated WIMPs: Dead, Dying, or Soon to be Detected?
Carlos Blanco, Miguel Escudero, Dan Hooper +1
Although weakly interacting massive particles (WIMPs) have long been among the most studied and theoretically attractive classes of candidates for the dark matter of our universe,…
Cosmological Constraints on Invisible Neutrino Decays Revisited
Miguel Escudero, Malcolm Fairbairn
Invisible neutrino decay modes are difficult to target at laboratory experiments, and current bounds on such decays from solar neutrino and neutrino oscillation experiments are som…
Cosmology With a Very Light Gauge Boson
Miguel Escudero, Dan Hooper, Gordan Krnjaic +1
In this paper, we explore in detail the cosmological implications of an abelian gauge extension of the Standard Model featuring a light and weakly coupled . Such a sc…