254 citations · 2.7k across the 40 of their papers we have counts for
33 papers · 1 filter
Collider and direct detection as key probes of asymmetric dark matter: Signals from a compressed Inert Higgs doublet
David Cerdeño, Miguel Escudero, Pietro Ghedini +4
The cosmic imbalance of particles over antiparticles may be inherited by the dark matter in a certain class of asymmetric dark matter models. In this article, we thoroughly investi…
Axion Star Explosions and the Reionization History of the Universe
Miguel Escudero
Cosmological structure formation simulations of ultralight axion-like dark matter have shown that an axion star forms at the center of every dark matter halo in the Universe. These…
Neff in the Standard Model at NLO is 3.043
Mattia Cielo, Miguel Escudero, Gianpiero Mangano +1
The effective number of relativistic neutrino species is a fundamental probe of the early Universe and its measurement represents a key constraint on many scenarios beyond the Stan…
Precision CMB constraints on eV-scale bosons coupled to neutrinos
Stefan Sandner, Miguel Escudero, Samuel J. Witte
The cosmic microwave background (CMB) has proven to be an invaluable tool for studying the properties and interactions of neutrinos, providing insight not only into the sum of neut…
Axion Star Explosions: A New Source for Axion Indirect Detection
Miguel Escudero, Charis Kaur Pooni, Malcolm Fairbairn +3
If dark matter is composed of axions, then axion stars form in the cores of dark matter halos. These stars are unstable above a critical mass, decaying to radio photons that heat t…
A seesaw model for large neutrino masses in concordance with cosmology
Miguel Escudero, Thomas Schwetz, Jorge Terol-Calvo
Cosmological constraints on the sum of the neutrino masses can be relaxed if the number density of active neutrinos is reduced compared to the standard scenario, while at the same…
Primordial lepton asymmetries in the precision cosmology era: Current status and future sensitivities from BBN and the CMB
Miguel Escudero, Alejandro Ibarra, Victor Maura
Using a new sample of extremely metal poor systems, the EMPRESS survey has recently reported a primordial helium abundance that is smaller than the prediction from the standar…
Synergy between cosmological and laboratory searches in neutrino physics
Martina Gerbino, Evan Grohs, Massimiliano Lattanzi +21
The intersection of the cosmic and neutrino frontiers is a rich field where much discovery space still remains. Neutrinos play a pivotal role in the hot big bang cosmology, influen…
New Physics Searches at Kaon and Hyperon Factories
Evgueni Goudzovski, Diego Redigolo, Kohsaku Tobioka +61
Rare meson decays are among the most sensitive probes of both heavy and light new physics. Among them, new physics searches using kaons benefit from their small total decay widths…
Cosmic Neutrino Background Detection in Large-Neutrino-Mass Cosmologies
James Alvey, Miguel Escudero, Nashwan Sabti +1
The Cosmic Neutrino Background (CNB) is a definite prediction of the standard cosmological model and its direct discovery would represent a milestone in cosmology and neutrino phys…
The Strange Physics of Dark Baryons
Gonzalo Alonso-Álvarez, Gilly Elor, Miguel Escudero +3
Dark sector particles at the GeV scale carrying baryon number provide an attractive framework for understanding the origin of dark matter and the matter-antimatter asymmetry of the…
Addendum: Refined bounds on MeV-scale thermal dark sectors from BBN and the CMB
Nashwan Sabti, James Alvey, Miguel Escudero +2
Very recently, the LUNA collaboration has reported a new measurement of the reaction rate, which plays an important role in the prediction of the primord…
Unleashing the full power of LHCb to probe Stealth New Physics
Martino Borsato, Xabier Cid Vidal, Yuhsin Tsai +38
In this paper, we describe the potential of the LHCb experiment to detect Stealth physics. This refers to dynamics beyond the Standard Model that would elude searches that focus on…
The Hubble Tension as a Hint of Leptogenesis and Neutrino Mass Generation
Miguel Escudero, Samuel J. Witte
The majoron, a neutrinophilic pseudo-Goldstone boson conventionally arising in the context of neutrino mass models, can damp neutrino free-streaming and inject additional energy de…
Collider Signals of Baryogenesis and Dark Matter from Mesons: A Roadmap to Discovery
Gonzalo Alonso-Álvarez, Gilly Elor, Miguel Escudero
Low-scale baryogenesis could be discovered at -factories and the LHC. In the -Mesogenesis paradigm [G. Elor, M. Escudero, and A. E. Nelson, PRD 99, 035031 (2019), arXiv:1810.…
New Constraints on the Mass of Fermionic Dark Matter from Dwarf Spheroidal Galaxies
James Alvey, Nashwan Sabti, Victoria Tiki +7
Dwarf spheroidal galaxies are excellent systems to probe the nature of fermionic dark matter due to their high observed dark matter phase-space density. In this work, we review, re…
The Axion Quality Problem: Global Symmetry Breaking and Wormholes
James Alvey, Miguel Escudero
Continuous global symmetries are expected to be broken by gravity, which can lead to important phenomenological consequences. A prime example is the threat that this poses to the v…
Relaxing Cosmological Neutrino Mass Bounds with Unstable Neutrinos
Miguel Escudero, Jacobo Lopez-Pavon, Nuria Rius +1
At present, cosmological observations set the most stringent bound on the neutrino mass scale. Within the standard cosmological model (CDM), the Planck collaboration reports $\s…
Could the Hubble Tension be Pointing Towards the Neutrino Mass Mechanism?
Miguel Escudero, Samuel J. Witte
Local measurements of the Hubble constant currently disagree with the high-precision value that is inferred from the CMB under the assumption of a CDM cosmology. The significanc…
Precision Early Universe Thermodynamics made simple: and Neutrino Decoupling in the Standard Model and beyond
Miguel Escudero
Precision measurements of the number of effective relativistic neutrino species and the primordial element abundances require accurate theoretical predictions for early Universe ob…
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,…
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…