7 citations · 19 across the 11 of their papers we have counts for
13 papers
General one-loop expressions for the diagonal and transition electromagnetic moments of spin-1/2 fermions
Alejandro Ibarra, Merlin Reichard
Electrically neutral spin-1/2 fermions can interact via Yukawa or gauge couplings with electrically charged particles, leading to quantum-induced couplings between the neutral ferm…
Resonant neutrino flavor conversion within dark matter spikes
P. S. Bhupal Dev, Elisa Gaido, Alejandro Ibarra +1
We investigate how neutrino--dark matter (DM) interactions modify the flavor composition of high-energy neutrinos from active galactic nuclei (AGNs). Coherent forward scattering in…
Celestial probes of dark matter electromagnetic interactions
Alejandro Ibarra, Merlin Reichard, Gaurav Tomar
We investigate the neutrino flux from the Sun and Earth, as well as the heating of Jupiter and white dwarfs, induced by the annihilation of spin- dark matter particles capture…
Cosmological signals of dark matter semi-annihilation
Boris Betancourt Kamenetskaia, Mathias Garny, Alejandro Ibarra +2
The growth of primordial density fluctuations in the early Universe leads to an inhomogeneous dark matter distribution at high redshift, where semi-annihilation processes of the fo…
Connecting cosmologically decaying dark matter to neutrino physics
Lea Fuß, Mathias Garny, Alejandro Ibarra
Dark matter decays into invisible particles can leave an imprint in large-scale structure surveys due to a characteristic redshift-dependent suppression of the power spectrum. We p…
Attenuation of the ultra-high-energy neutrino flux by dark matter scatterings
Ivan Esteban, Alejandro Ibarra
A flux of ultra-high-energy (UHE) neutrinos, produced by astrophysical sources at cosmological distances, is anticipated to exist and reach Earth. In this paper, we investigate the…
Dark matter explanations for the neutrino emission from the Seyfert galaxy NGC 1068
Kensuke Akita, Alejandro Ibarra, Robert Zimmermann
We investigate the possibility that the high-energy neutrino flux observed from the Seyfert galaxy NGC 1068 originates from dark matter annihilations within the density spike surro…
Dark matter spikes with strongly self-interacting particles
Boris Betancourt Kamenetskaia, Motoko Fujiwara, Alejandro Ibarra +1
An unavoidable prediction of scenarios with Dark Matter (DM) self-interactions is the existence of number changing processes that convert initial DM particles into final on…
Imprints of energy injection by compact dark stars in the 21-cm signal
Boris Betancourt Kamenetskaia, Alejandro Ibarra, Chris Kouvaris
A strongly self-interacting component of asymmetric dark matter particles can form compact dark stars. The high dark matter density in these objects may allow significant dark matt…
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…
Boosted dark matter from semi-annihilations in the galactic center
Boris Betancourt Kamenetskaia, Motoko Fujiwara, Alejandro Ibarra +1
In some scenarios, the dark matter relic abundance is set by the semi-annihilation of two dark matter particles into one dark matter particle and one Standard Model particle. These…
Probing Dark Matter Electromagnetic Properties in Direct Detection Experiments
Alejandro Ibarra, Merlin Reichard, Gaurav Tomar
Astronomical and cosmological observations indicate that dark matter should interact very weakly with the electromagnetic radiation. Nevertheless, the existence of such interaction…
Minimal decaying dark matter: from cosmological tensions to neutrino signatures
Lea Fuß, Mathias Garny, Alejandro Ibarra
The invisible decay of cold dark matter into a slightly lighter dark sector particle on cosmological time-scales has been proposed as a solution to the tension. In this work…