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Heating Neutron Stars with Inelastic Dark Matter and Relativistic Targets
Gerardo Alvarez, Aniket Joglekar, Mehrdad Phoroutan-Mehr +1
The dense environment of neutron stars makes them an excellent target for probing dark matter interactions with the Standard Model. We study neutron star heating from capture of in…
Snowmass Theory Frontier: Astrophysics and Cosmology
Daniel Green, Joshua T. Ruderman, Benjamin R. Safdi +84
We summarize progress made in theoretical astrophysics and cosmology over the past decade and areas of interest for the coming decade. This Report is prepared as the TF09 "Astrophy…
Report of the Topical Group on Cosmic Probes of Dark Matter for Snowmass 2021
Alex Drlica-Wagner, Chanda Prescod-Weinstein, Hai-Bo Yu +37
Cosmological and astrophysical observations currently provide the only robust, positive evidence for dark matter. Cosmic probes of dark matter, which seek to determine the fundamen…
Dark Stars Powered by Self-Interacting Dark Matter
Youjia Wu, Sebastian Baum, Katherine Freese +2
Dark matter annihilation might power the first luminous stars in the Universe. These types of stars, known as dark stars, could form in protohalos a…
Snowmass2021 Cosmic Frontier White Paper: Dark Matter Physics from Halo Measurements
Keith Bechtol, Simon Birrer, Francis-Yan Cyr-Racine +41
The non-linear process of cosmic structure formation produces gravitationally bound overdensities of dark matter known as halos. The abundances, density profiles, ellipticities, an…
Early-Universe Model Building
Pouya Asadi, Saurabh Bansal, Asher Berlin +37
Theoretical investigations into the evolution of the early universe are an essential part of particle physics that allow us to identify viable extensions to the Standard Model as w…
Displaced Lepton Jet Signatures from Self-Interacting Dark Matter Bound States
Yuhsin Tsai, Tao Xu, Hai-Bo Yu
We study self-interacting dark matter signatures at the Large Hadron Collider. A light dark photon, mediating dark matter self-interactions, can bind dark matter particles to form…
Constraining Dissipative Dark Matter Self-Interactions
Rouven Essig, Samuel D. McDermott, Hai-Bo Yu +1
We study the gravothermal evolution of dark matter halos in the presence of dissipative dark matter self-interactions. Dissipative interactions are present in many particle-physics…
Self-interacting dark matter and muon in a gauged U model
Ayuki Kamada, Kunio Kaneta, Keisuke Yanagi +1
We construct a self-interacting dark matter model that could simultaneously explain the observed muon anomalous magnetic moment. It is based on a gauged U extensio…
US Cosmic Visions: New Ideas in Dark Matter 2017: Community Report
Marco Battaglieri, Alberto Belloni, Aaron Chou +248
This white paper summarizes the workshop "U.S. Cosmic Visions: New Ideas in Dark Matter" held at University of Maryland on March 23-25, 2017.
Dark Matter Self-interactions and Small Scale Structure
Sean Tulin, Hai-Bo Yu
We review theories of dark matter (DM) beyond the collisionless paradigm, known as self-interacting dark matter (SIDM), and their observable implications for astrophysical structur…
Dark Sectors 2016 Workshop: Community Report
Jim Alexander, Marco Battaglieri, Bertrand Echenard +201
This report, based on the Dark Sectors workshop at SLAC in April 2016, summarizes the scientific importance of searches for dark sector dark matter and forces at masses beneath the…
Direct Detection Signatures of Self-Interacting Dark Matter with a Light Mediator
Eugenio Del Nobile, Manoj Kaplinghat, Hai-Bo Yu
Self-interacting dark matter (SIDM) is a simple and well-motivated scenario that could explain long-standing puzzles in structure formation on small scales. If the required self-in…
Coherent Propagation of PeV Neutrinos and the Dip in the Neutrino Spectrum at IceCube
Ayuki Kamada, Hai-Bo Yu
The energy spectrum of high-energy neutrinos reported by the IceCube collaboration shows a dip between 400 TeV and 1 PeV. One intriguing explanation is that high-energy neutrinos s…
Beyond Collisionless Dark Matter: Particle Physics Dynamics for Dark Matter Halo Structure
Sean Tulin, Hai-Bo Yu, Kathryn M. Zurek
Dark matter (DM) self-interactions have important implications for the formation and evolution of structure, from dwarf galaxies to clusters of galaxies. We study the dynamics of s…
Three Exceptions for Thermal Dark Matter with Enhanced Annihilation to Gamma Gamma
Sean Tulin, Hai-Bo Yu, Kathryn M. Zurek
Recently, there have been hints for dark matter (DM) annihilation in the galactic center to one or more photon lines. In order to achieve the observed photon line flux, DM must hav…
Oscillating Asymmetric Dark Matter
Sean Tulin, Hai-Bo Yu, Kathryn M. Zurek
We study the dynamics of dark matter (DM) particle-antiparticle oscillations within the context of asymmetric DM. Oscillations arise due to small DM number-violating Majorana-type…
On Symmetric and Asymmetric Light Dark Matter
Tongyan Lin, Hai-Bo Yu, Kathryn M. Zurek
We examine cosmological, astrophysical and collider constraints on thermal dark matter (DM) with mass mX in the range 1 MeV to 10 GeV. Cosmic microwave background (CMB) observation…
The Dark Matter Inverse Problem: Extracting Particle Physics from Scattering Events
Samuel D. McDermott, Hai-Bo Yu, Kathryn M. Zurek
The primary observable in dark matter direct detection is the spectrum of scattering events. We simulate multiple positive direct detection signals (on germanium, xenon, and argon…
The Baryon-Dark Matter Ratio Via Moduli Decay After Affleck-Dine Baryogenesis
Gordon Kane, Jing Shao, Scott Watson +1
Low-scale supersymmetry breaking in string motivated theories implies the presence of O(100) TeV scale moduli, which generically lead to a significant modification of the history o…
Constraints on Scalar Asymmetric Dark Matter from Black Hole Formation in Neutron Stars
Samuel D. McDermott, Hai-Bo Yu, Kathryn M. Zurek
We consider possibly observable effects of asymmetric dark matter (ADM) in neutron stars. Since dark matter does not self-annihilate in the ADM scenario, dark matter accumulates in…
Turning off the Lights: How Dark is Dark Matter?
Samuel D. McDermott, Hai-Bo Yu, Kathryn M. Zurek
We consider current observational constraints on the electromagnetic charge of dark matter. The velocity dependence of the scattering cross-section through the photon gives rise to…
Gamma Ray Line Constraints on Effective Theories of Dark Matter
Jessica Goodman, Masahiro Ibe, Arvind Rajaraman +3
A monochromatic gamma ray line results when dark matter particles in the galactic halo annihilate to produce a two body final state which includes a photon. Such a signal is very d…
Constraints on Light Majorana Dark Matter from Colliders
Jessica Goodman, Masahiro Ibe, Arvind Rajaraman +3
We explore model-independent collider constraints on light Majorana dark matter particles. We find that colliders provide a complementary probe of WIMPs to direct detection, and gi…