279 citations · 2.4k across the 48 of their papers we have counts for
14 papers · 1 filter
Searching for axion-like particle decay in the near-infrared background: an updated analysis
Andrea Caputo, Andrea Vittino, Nicolao Fornengo +2
The extragalactic background light is comprised of the cumulative radiation from all galaxies across the history of the universe. The angular power spectrum of the anisotropies of…
Plasma-photon interaction in curved spacetime I: formalism and quasibound states around nonspinning black holes
Enrico Cannizzaro, Andrea Caputo, Laura Sberna +1
We investigate the linear dynamics of an electromagnetic field propagating in curved spacetime in the presence of plasma. The dynamical equations are generically more involved and…
Directional detection of light dark matter from three-phonon events in superfluid He
Andrea Caputo, Angelo Esposito, Fulvio Piccinini +2
We present the analysis of a new signature for light dark matter detection with superfluid He: the emission of three phonons. We show that, in a region of mass below the MeV, t…
Strategies to Detect Dark-Matter Decays with Line-Intensity Mapping
José Luis Bernal, Andrea Caputo, Marc Kamionkowski
The nature of dark matter is a longstanding mystery in cosmology, which can be studied with laboratory or collider experiments, as well as astrophysical and cosmological observatio…
The see-saw portal at future Higgs Factories
Daniele Barducci, Enrico Bertuzzo, Andrea Caputo +2
We consider an extension of the Standard Model with two right-handed singlet fermions with mass at the electroweak scale that induce neutrino masses, plus a generic new physics sec…
Detectable environmental effects in GW190521-like black-hole binaries with LISA
Alexandre Toubiana, Laura Sberna, Andrea Caputo +9
GW190521 is the compact binary with the largest masses observed to date, with at least one in the pair-instability gap. This event has also been claimed to be associated with an op…
Edges and Endpoints in 21-cm Observations from Resonant Photon Production
Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma +3
We introduce a novel class of signatures---spectral edges and endpoints---in 21-cm measurements resulting from interactions between the standard and dark sectors. Within the contex…
Revisiting longitudinal plasmon-axion conversion in external magnetic fields
Andrea Caputo, Alexander J. Millar, Edoardo Vitagliano
In the presence of an external magnetic field the axion and the photon mix. In particular, the dispersion relation of a longitudinal plasmon always crosses the dispersion relation…
Exploring New Physics with O(keV) Electron Recoils in Direct Detection Experiments
Itay M. Bloch, Andrea Caputo, Rouven Essig +3
Motivated by the recent XENON1T results, we explore various new physics models that can be discovered through searches for electron recoils in O(keV)-threshold direct-detection exp…
Axion helioscopes as solar magnetometers
Ciaran A. J. O'Hare, Andrea Caputo, Alexander J. Millar +1
Axion helioscopes search for solar axions and axion-like particles via inverse Primakoff conversion in strong laboratory magnets pointed at the Sun. Anticipating the detection of s…
Modeling Dark Photon Oscillations in Our Inhomogeneous Universe
Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma +1
A dark photon may kinetically mix with the Standard Model photon, leading to observable cosmological signatures. The mixing is resonantly enhanced when the dark photon mass matches…
Minimal flavor violation in the see-saw portal
Daniele Barducci, Enrico Bertuzzo, Andrea Caputo +1
We consider an extension of the Standard Model with two singlet leptons, with masses in the electroweak range, that induce neutrino masses via the see-saw mechanism, plus a generic…
Dark Photon Oscillations in Our Inhomogeneous Universe
Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma +1
A dark photon may kinetically mix with the ordinary photon, inducing oscillations with observable imprints on cosmology. Oscillations are resonantly enhanced if the dark photon mas…
Gravitational-wave detection and parameter estimation for accreting black-hole binaries and their electromagnetic counterpart
Andrea Caputo, Laura Sberna, Alexandre Toubiana +4
We study the impact of gas accretion on the orbital evolution of black-hole binaries initially at large separation in the band of the planned Laser Interferometer Space Antenna (LI…