129 citations · 574 across the 23 of their papers we have counts for
20 papers · 1 filter
A New Probe of Strongly-Interacting Dark Sector using Neutrino Telescopes
Jose A. Macias Cruz, Christopher V. Cappiello, P. S. Bhupal Dev +1
A confining dark sector modeled after quantum chromodynamics provides a well-motivated framework for strongly-interacting dark matter. We show that dark vector mesons in a confinin…
Reappraisal of the Constraints on Heavy Axion-like Particles from Gamma-Ray Bursts
Christopher V. Cappiello, Saurav Das, P. S. Bhupal Dev +2
We reassess existing limits and derive new constraints on heavy axion-like particle (ALP) coupling to photons using gamma-ray bursts (GRBs). ALPs can be produced in the hot dense f…
Galactic Center Neutrinos from Cosmic Ray-Dark Matter Interactions
Jorge Terol Calvo, Pedro de la Torre Luque, Mainak Mukhopadhyay +2
The IceCube and ANTARES collaborations have recently reported evidence for high-energy neutrinos associated with the Galactic plane and the Galactic Ridge, offering a new pathway t…
Towards the Detection of Thermal Solar Neutrinos
Carlos A. Argüelles, Christopher V. Cappiello, P. S. Bhupal Dev +3
We show that keV thermal solar neutrinos, arising from electroweak processes in the solar plasma, are kinematically accessible to large-volume dark matter direct detection ex…
Deconstructive Composite Dark Matter Detection
Yilda Boukhtouchen, Joseph Bramante, Christopher Cappiello +1
We investigate the detection of composite dark matter that disassembles into a cascade while crossing the Earth. This occurs for loosely bound composite dark matter, where the bind…
Can a Dark Inferno Melt Earth's Core?
Christopher Cappiello, Tansu Daylan
The search for dark matter is one of the crucial open problems in both particle physics and cosmology. If dark matter scatters with Standard Model particles, it could accumulate in…
New Supernova Constraints on Vector-Mediated Neutrinophilic Dark Sector
Christopher V. Cappiello, P. S. Bhupal Dev, Amol V. Patwardhan
Supernova cooling has long been used to constrain physics beyond the Standard Model, typically involving new mediators or dark matter (DM) particles that couple to nucleons or elec…
Loosely Bound Composite Dark Matter
Javier F. Acevedo, Yilda Boukhtouchen, Joseph Bramante +3
We investigate loosely bound composite states made of dark matter, where the binding energy for constituent particles is less than the constituent mass. We focus on models of nucle…
Resonant or asymmetric: The status of sub-GeV dark matter
Sowmiya Balan, Csaba Balázs, Torsten Bringmann +9
Sub-GeV dark matter (DM) particles produced via thermal freeze-out evade many of the strong constraints on heavier DM candidates but at the same time face a multitude of new constr…
Dissipative Dark Cosmology: From Early Matter Dominance to Delayed Compact Objects
Joseph Bramante, Christopher V. Cappiello, Melissa D. Diamond +3
We demonstrate a novel mechanism for producing dark compact objects and black holes through a dark sector, where all the dark matter can be dissipative. Heavy dark sector particles…
Cosmic Ray-Boosted Dark Matter at IceCube
Christopher Cappiello, Qinrui Liu, Gopolang Mohlabeng +1
Cosmic ray (CR) upscattering of dark matter is considered as one of the most straightforward mechanisms to accelerate ambient dark matter, making it detectable at high threshold, l…
Limiting Light Dark Matter with Luminous Hadronic Loops
Joe Bramante, Melissa Diamond, Christopher V. Cappiello +1
Dark matter is typically assumed not to couple to the photon at tree level. While annihilation to photons through quark loops is often considered in indirect detection searches, su…
The Morphology of Exciting Dark Matter and the Galactic 511 keV Signal
Christopher V. Cappiello, Michael Jafs, Aaron C. Vincent
We study the morphology of the 511 keV signal that could be produced by exciting dark matter (XDM) in the Milky Way. In this model, collisions between dark matter particles excite…
An Analytic Approach to Light Dark Matter Propagation
Christopher Cappiello
If dark matter interacts too strongly with nuclei, it could be slowed to undetectable speeds in Earth's crust or atmosphere before ever reaching a detector. For sub-GeV dark matter…
Dark Matter from Monogem
Christopher V. Cappiello, Neal P. Avis Kozar, Aaron C. Vincent
As a supernova shock expands into space, it may collide with dark matter particles, scattering them up to velocities more than an order of magnitude larger than typical dark matter…
New Constraints on Macroscopic Dark Matter Using Radar Meteor Detectors
Pawan Dhakal, Steven Prohira, Christopher V. Cappiello +3
We show that dark-matter candidates with large masses and large nuclear interaction cross sections are detectable with terrestrial radar systems. We develop our results in close co…
Snowmass2021 Cosmic Frontier White Paper: Ultraheavy particle dark matter
Daniel Carney, Nirmal Raj, Yang Bai +25
We outline the unique opportunities and challenges in the search for "ultraheavy" dark matter candidates with masses between roughly and the Planck scale $m_{\rm pl}…
(Not as) Big as a Barn: Upper Bounds on Dark Matter-Nucleus Cross Sections
Matthew C. Digman, Christopher V. Cappiello, John F. Beacom +2
Critical probes of dark matter come from tests of its elastic scattering with nuclei. The results are typically assumed to be model-independent, meaning that the form of the potent…
Strong New Limits on Light Dark Matter from Neutrino Experiments
Christopher V. Cappiello, John F. Beacom
The non-detection of GeV-scale WIMPs has led to increased interest in more general candidates, including sub-GeV dark matter. Direct detection experiments, despite their high sensi…
Reverse Direct Detection: Cosmic Ray Scattering With Light Dark Matter
Christopher V. Cappiello, Kenny C. Y. Ng, John F. Beacom
Sub-GeV dark matter candidates are of increasing interest, because long-favored candidates such as GeV-scale WIMPs have not been detected. For low-mass dark matter, model-independe…