Publications (110)
Natural Realizations of Seesaw in Mini-Warped Minimal SO(10)
R. N. Mohapatra, N. Okada, Hai-Bo Yu
The minimal SUSY SO(10) GUT models with {\bf 10}, {\bf 126} and {\bf 210} Higgs and only renormalizable couplings has been shown to provide a simple way to understand the neutrino…
Neutron stars at the dark matter direct detection frontier
Nirmal Raj, Philip Tanedo, Hai-Bo Yu
Neutron stars capture dark matter efficiently. The kinetic energy transferred during capture heats old neutron stars in the local galactic halo to temperatures detectable by upcomi…
Search for Dark-Matter-Nucleon Interactions with a Dark Mediator in PandaX-4T
Di Huang, Abdusalam Abdukerim, Zihao Bo +92
We report results of a search for dark-matter-nucleon interactions via a dark mediator using optimized low-energy data from the PandaX-4T liquid xenon experiment. With the ionizati…
Dynamical Instability of Collapsed Dark Matter Halos
Wei-Xiang Feng, Hai-Bo Yu, Yi-Ming Zhong
A self-interacting dark matter halo can experience gravothermal collapse, resulting in a central core with an ultrahigh density. It can further contract and collapse into a black h…
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…
The Structure of Dissipative Dark Matter Halos
Ran Huo, Hai-Bo Yu, Yi-Ming Zhong
Dissipative dark matter self-interactions can affect halo evolution and change its structure. We perform a series of controlled N-body simulations to study impacts of the dissipati…
Seesaw Right Handed Neutrino as the Sterile Neutrino for LSND
R. N. Mohapatra, S. Nasri, Hai-Bo Yu
We show that a double seesaw framework for neutrino masses with exchange symmetry can lead to one of the righthanded seesaw partners of the light neutrinos being massless.…
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…
SIDM Concerto: Compilation and Data Release of Self-interacting Dark Matter Zoom-in Simulations
Ethan O. Nadler, Demao Kong, Daneng Yang +1
We present SIDM Concerto: cosmological zoom-in simulations in cold dark matter (CDM) and self-interacting dark matter (SIDM) models based on the Symphony and Milky Way-est sui…
Simulating the "hidden giant" in cold and self-interacting dark matter models
Omid Sameie, Sukanya Chakrabarti, Hai-Bo Yu +4
We perform a series of controlled N-body simulations to study realizations of the recently discovered Antlia 2 galaxy in cold dark matter (CDM) and self-interacting dark matter (SI…
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…
Grand unification of Symmetry
R. N. Mohapatra, S. Nasri, Hai-Bo Yu
Near maximal neutrino mixing needed to understand atmospheric neutrino data can be interpreted to be a consequence of an interchange symmetry between the muon and tau neutrinos in…
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…
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.
Hidden Charged Dark Matter
Jonathan L. Feng, Manoj Kaplinghat, Huitzu Tu +1
Can dark matter be stabilized by charge conservation, just as the electron is in the standard model? We examine the possibility that dark matter is hidden, that is, neutral under a…
Dark Matter in the Coming Decade: Complementary Paths to Discovery and Beyond
Sebastian Arrenberg, Howard Baer, Vernon Barger +29
In this Report we discuss the four complementary searches for the identity of dark matter: direct detection experiments that look for dark matter interacting in the lab, indirect d…
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…
Self-interacting dark matter interpretation of Crater II
Xingyu Zhang, Hai-Bo Yu, Daneng Yang +1
The satellite galaxy Crater II of the Milky Way is extremely cold and exceptionally diffuse. These unusual properties are challenging to understand in the standard model of cold da…
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…
The impact of baryonic discs on the shapes and profiles of self-interacting dark matter halos
Omid Sameie, Peter Creasey, Hai-Bo Yu +3
We employ isolated N-body simulations to study the response of self-interacting dark matter (SIDM) halos in the presence of the baryonic potentials. Dark matter self-interactions l…
Self-Interacting Dark Matter Subhalos in the Milky Way's Tides
Omid Sameie, Hai-Bo Yu, Laura V. Sales +2
We study evolution of self-interacting dark matter (SIDM) subhalos in the Milky Way (MW) tidal field. The interaction between the subhalos and the MW's tides lead to more diverse d…
Constraining self-interacting dark matter with the full dataset of PandaX-II
Jijun Yang, Abdusalam Abdukerim, Wei Chen +69
Self-interacting Dark Matter (SIDM) is a leading candidate proposed to solve discrepancies between predictions of the prevailing cold dark matter theory and observations of galaxie…
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…
Diquark Higgs at LHC
R. N. Mohapatra, Nobuchika Okada, Hai-Bo Yu
Existence of color sextet diquark Higgs fields with TeV masses will indicate a fundamentally different direction for unification than conventional grand unified theories. There is…
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…
The GD-1 stellar stream perturber as a core-collapsed self-interacting dark matter halo
Xingyu Zhang, Hai-Bo Yu, Daneng Yang +1
The GD-1 stellar stream exhibits spur and gap structures that may result from a close encounter with a dense substructure. When interpreted as a dark matter subhalo, the perturber…
Reconciling the Diversity and Uniformity of Galactic Rotation Curves with Self-Interacting Dark Matter
Tao Ren, Anna Kwa, Manoj Kaplinghat +1
Galactic rotation curves exhibit diverse behavior in the inner regions, while obeying an organizing principle, i.e., they can be approximately described by a radial acceleration re…
Direct Detection Portals for Self-interacting Dark Matter
Manoj Kaplinghat, Sean Tulin, Hai-Bo Yu
Dark matter self-interactions can affect the small scale structure of the Universe, reducing the central densities of dwarfs and low surface brightness galaxies in accord with obse…
Dark Bondi Accretion Aided by Baryons and the Origin of JWST Little Red Dots
Wei-Xiang Feng, Hai-Bo Yu, Yi-Ming Zhong
The gravothermal core collapse of self-interacting dark matter halos provides a compelling mechanism for seeding supermassive black holes in the early Universe. In this scenario, a…
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…
Constraining Dark Matter Models with a Light Mediator from PandaX-II Experiment
Xiangxiang Ren, Li Zhao, Abdusalam Abdukerim +44
We search for nuclear recoil signals of dark matter models with a light mediator in PandaX-II, a direct detection experiment in China Jinping underground Laboratory. Using data col…
Numerical challenges for energy conservation in N-body simulations of collapsing self-interacting dark matter halos
Moritz S. Fischer, Klaus Dolag, Hai-Bo Yu
Dark matter (DM) halos can be subject to gravothermal collapse if the DM is not collisionless, but engaged in strong self-interactions. When the scattering can efficiently transfer…
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…
An SO(10) GUT Model with Flavor Symmetry
Yi Cai, Hai-Bo Yu
We present a supersymmetric grand unification model based on SO(10) group with flavor symmetry. In this model, the fermion masses are from Yukawa couplings involving …
Gravothermal Collapse: Robust Against Baryonic Feedback
Demao Kong, Hai-Bo Yu
We perform a stress test of gravothermal collapse in self-interacting dark matter (SIDM) halos under baryonic feedback using a semi-analytical oscillating-potential model in contro…
The effect of dark matter-dark radiation interactions on halo abundance -- a Press-Schechter approach
Omid Sameie, Andrew J. Benson, Laura V. Sales +3
We study halo mass functions with the Press-Schechter formalism for interacting dark matter models, where matter power spectra are damped due to dark acoustic oscillations in the e…
Supersymmetry Breaking by Type II Seesaw Assisted Anomaly Mediation
R. N. Mohapatra, Nobuchika Okada, Hai-Bo Yu
Anomaly mediated supersymmetry breaking (AMSB), when implemented in MSSM is known to suffer from the problem of negative slepton mass squared leading to breakdown of electric charg…
Spreading out and staying sharp - Creating diverse rotation curves via baryonic and self-interaction effects
Peter Creasey, Omid Sameie, Laura V. Sales +3
Galactic rotation curves are a fundamental constraint for any cosmological model. We use controlled N-body simulations of galaxies to study the gravitational effect of baryons in a…
Dark Matter Halos as Particle Colliders: A Unified Solution to Small-Scale Structure Puzzles from Dwarfs to Clusters
Manoj Kaplinghat, Sean Tulin, Hai-Bo Yu
Astrophysical observations spanning dwarf galaxies to galaxy clusters indicate that dark matter (DM) halos are less dense in their central regions compared to expectations from col…
Resonant Dark Forces and Small Scale Structure
Sean Tulin, Hai-Bo Yu, Kathryn M. Zurek
A dark force can impact the cosmological history of dark matter (DM), both explaining observed cores in dwarf galaxies and setting the DM relic density through annihilation to dark…
CDM and SIDM Interpretations of the Strong Gravitational Lensing Object JWST-ER1
Demao Kong, Daneng Yang, Hai-Bo Yu
van Dokkum et al. (arXiv:2309.07969) reported the discovery of JWST-ER1, a strong lensing object at redshift , using data from the James Webb Space Telescope. The lens m…
Symmetry and Tri-bimaximal Mixing
R. N. Mohapatra, S. Nasri, Hai-Bo Yu
The near maximal value for the atmospheric neutrino mixing angle together with the fact that the solar mixing angle satisfies the relation is the basis…
How the Self-Interacting Dark Matter Model Explains the Diverse Galactic Rotation Curves
Ayuki Kamada, Manoj Kaplinghat, Andrew B. Pace +1
The rotation curves of spiral galaxies exhibit a diversity that has been difficult to understand in the cold dark matter (CDM) paradigm. We show that the self-interacting dark matt…
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…
Thermal Relics in Hidden Sectors
Jonathan L. Feng, Huitzu Tu, Hai-Bo Yu
Dark matter may be hidden, with no standard model gauge interactions. At the same time, in WIMPless models with hidden matter masses proportional to hidden gauge couplings squared,…
Gravothermal collapse and the diversity of galactic rotation curves
M. Grant Roberts, Manoj Kaplinghat, Mauro Valli +1
The rotation curves of spiral galaxies exhibit a great diversity that challenge our understanding of galaxy formation and the nature of dark matter. Previous studies showed that in…
Snowmass2021: Vera C. Rubin Observatory as a Flagship Dark Matter Experiment
Yao-Yuan Mao, Annika H. G. Peter, Susmita Adhikari +30
Establishing that Vera C. Rubin Observatory is a flagship dark matter experiment is an essential pathway toward understanding the physical nature of dark matter. In the past two de…
Galactic Center Excess in Gamma Rays from Annihilation of Self-Interacting Dark Matter
Manoj Kaplinghat, Tim Linden, Hai-Bo Yu
Observations by the Fermi-LAT telescope have uncovered a significant -ray excess toward the Milky Way Galactic Center. There has been no detection of a similar signal in the di…
Gravitational Waves from Primordial Black Hole Dark Matter Spikes
Wei-Xiang Feng, Simeon Bird, Hai-Bo Yu
The origin of the binary black hole mergers observed by LIGO--Virgo--KAGRA remains an open question. We calculate the merger rate from primordial black holes (PBHs) within the dens…
The impact of baryonic potentials on the gravothermal evolution of self-interacting dark matter haloes
Yi-Ming Zhong, Daneng Yang, Hai-Bo Yu
The presence of a central baryonic potential can have a significant impact on the gravothermal evolution of self-interacting dark matter (SIDM) haloes. We extend a semi-analytical…
Sommerfeld Enhancements for Thermal Relic Dark Matter
Jonathan L. Feng, Manoj Kaplinghat, Hai-Bo Yu
The annihilation cross section of thermal relic dark matter determines both its relic density and indirect detection signals. We determine how large indirect signals may be in scen…
Relaxing Constraints on Dark Matter Annihilation Near the Supermassive Black Hole in M87
Mehrdad Phoroutan-Mehr, Hai-Bo Yu
The supermassive black hole at the center of M87 could redistribute dark matter particles within its sphere of influence, creating a high-density region known as a density spike. T…
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…
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…
Dark Matter Science in the Era of LSST
Keith Bechtol, Alex Drlica-Wagner, Kevork N. Abazajian +177
Astrophysical observations currently provide the only robust, empirical measurements of dark matter. In the coming decade, astrophysical observations will guide other experimental…
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…
Accurately simulating core-collapse self-interacting dark matter halos
Moritz S. Fischer, Hai-Bo Yu, Klaus Dolag
The properties of satellite halos provide a promising probe for dark matter (DM) physics. Observations have motivated current efforts to explain surprisingly compact DM halos. If D…
Probing Signals of Self-Interacting Dark Matter Core Collapse in HI-Rich Galaxies
Demao Kong, Hai-Bo Yu
We analyze rotation curves of five HI-rich galaxies recently discovered with MeerKAT. These galaxies exhibit sharply rising rotation curves, while their baryonic components are not…
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…
Confluence of Constraints in Gauge Mediation: The 125 GeV Higgs Boson and Goldilocks Cosmology
Jonathan L. Feng, Ze'ev Surujon, Hai-Bo Yu
Recent indications of a 125 GeV Higgs boson are challenging for gauge-mediated supersymmetry breaking (GMSB), since radiative contributions to the Higgs boson mass are not enhanced…
EDEN: Exploring Disks Embedded in N-body simulations of Milky-Way-mass halos from Symphony
Yunchong Wang, Philip Mansfield, Ethan O. Nadler +4
We investigate the impact of galactic disks on the tidal stripping of cold dark matter subhalos within Milky Way (MW)-mass halos () using…
Evaluating Lyman- Constraints for General Dark-Matter Velocity Distributions: Multiple Scales and Cautionary Tales
Keith R. Dienes, Fei Huang, Jeff Kost +2
The Lyman- absorption spectrum associated with photons traversing the intergalactic medium allows us to probe the linear matter power spectrum down to relatively small distance…
Tying Dark Matter to Baryons with Self-interactions
Manoj Kaplinghat, Ryan E. Keeley, Tim Linden +1
Self-interacting dark matter (SIDM) models have been proposed to solve the small-scale issues with the collisionless cold dark matter (CDM) paradigm. We derive equilibrium solution…
Minimal Flavor Violation in the Lepton Sector of the Randall-Sundrum Model
Mu-Chun Chen, Hai-Bo Yu
We propose a realization of Minimal Flavor Violation in the lepton sector of the Randall-Sundrum model. With the MFV assumption, the only source of flavor violation are the 5D Yuka…
Dark Kinetic Heating of Neutron Stars from Contact Interactions with Relativistic Targets
Aniket Joglekar, Nirmal Raj, Philip Tanedo +1
Dark matter can capture in neutron stars from scattering off ultra-relativistic electrons. We present a method to calculate the capture rate on degenerate targets with ultra-relati…
Probing the Fundamental Nature of Dark Matter with the Large Synoptic Survey Telescope
Alex Drlica-Wagner, Yao-Yuan Mao, Susmita Adhikari +97
Astrophysical and cosmological observations currently provide the only robust, empirical measurements of dark matter. Future observations with Large Synoptic Survey Telescope (LSST…
Fermion Mass Hierarchy and Proton Stability from Non-anomalous U(1)_F in SUSY SU(5)
Mu-Chun Chen, D. R. Timothy Jones, Arvind Rajaraman +1
We present a realistic supersymmetric SU(5) model combined with a non-anomalous U(1)_F symmetry. We find a set of U(1)_F charges which automatically lead to the realistic mass hier…
Novel Challenges in Tracking Self-Interacting Dark Matter Subhalos
Demao Kong, Hai-Bo Yu, Ethan O. Nadler +2
Cosmological N-body simulations are among the primary tools for studying structure formation in the Universe. Analyses of these simulations critically depend on accurately identify…
Strong Dark Matter Self-interactions Diversify Halo Populations within and surrounding the Milky Way
Daneng Yang, Ethan O. Nadler, Hai-Bo Yu
We perform a high-resolution cosmological zoom-in simulation of a Milky Way (MW)--like system, which includes a realistic Large Magellanic Cloud analog, using a large differential…
Markov Processes in Blockchain Systems
Quan-Lin Li, Jing-Yu Ma, Yan-Xia Chang +2
In this paper, we develop a more general framework of block-structured Markov processes in the queueing study of blockchain systems, which can provide analysis both for the station…
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 extens…
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…
Three Birds with One Stone: Core-Collapsed SIDM Halos as the Common Origin of Dense Perturbers in Lenses, Streams, and Satellites
Hai-Bo Yu
We show that core-collapsed self-interacting dark matter halos of mass , originally simulated to explain the dense perturber of the GD-1 stellar stream, also…
Constraints on Dark Matter from Colliders
Jessica Goodman, Masahiro Ibe, Arvind Rajaraman +3
We show that colliders can impose strong constraints on models of dark matter, in particular when the dark matter is light. We analyze models where the dark matter is a fermion or…
A Parametric Model for Self-Interacting Dark Matter Halos
Daneng Yang, Ethan O. Nadler, Hai-Bo Yu +1
We propose a parametric model for studying self-interacting dark matter (SIDM) halos. The model uses an analytical density profile, calibrated using a controlled N-body SIDM simula…
A Self-interacting Dark Matter Solution to the Extreme Diversity of Low-mass Halo Properties
Ethan O. Nadler, Daneng Yang, Hai-Bo Yu
The properties of low-mass dark matter (DM) halos appear to be remarkably diverse relative to cold, collisionless DM predictions, even in the presence of baryons. We show that self…
Black Hole Cold Brew: Fermi Degeneracy Pressure
Wei-Xiang Feng, Hai-Bo Yu, Yi-Ming Zhong
We investigate the dynamical instability of a self-gravitating thermal system in the quantum regime, where Fermi degeneracy pressure becomes significant. Using a truncated Fermi-Di…
Gravothermal evolution of dark matter halos with differential elastic scattering
Daneng Yang, Hai-Bo Yu
We study gravothermal evolution of dark matter halos in the presence of differential self-scattering that has strong velocity and angular dependencies. We design controlled N-body…
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…
SASHIMI-SIDM: Semi-analytical subhalo modelling for self-interacting dark matter at sub-galactic scales
Shin'ichiro Ando, Shunichi Horigome, Ethan O. Nadler +2
We combine the semi-analytical structure formation model, SASHIMI, which predicts subhalo populations in collisionless, cold dark matter (CDM), with a parametric model that maps CD…
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…
Cold Dark Matter and Self-Interacting Dark Matter Interpretations of Cloud-9
Morgan Ohana, Xingyu Zhang, Hai-Bo Yu
Recently, the Five-hundred-meter Aperture Spherical Telescope discovered a gas-rich hydrogen cloud near M94 in the band. Lacking an optical counterpart, this object,…
Dark matter self-interactions from the internal dynamics of dwarf spheroidals
Mauro Valli, Hai-Bo Yu
Dwarf spheroidal galaxies provide well-known challenges to the standard cold and collisionless dark matter scenario: The too-big-to-fail problem, namely the mismatch between the ob…
Relativistic capture of dark matter by electrons in neutron stars
Aniket Joglekar, Nirmal Raj, Philip Tanedo +1
Dark matter can capture in neutron stars and heat them to observable luminosities. We study relativistic scattering of dark matter on highly degenerate electrons. We develop a Lore…
The dark fate of ultra-faint dwarfs: Gravothermal collapse in action
Moritz S. Fischer, Hai-Bo Yu
Ultra-faint dwarf (UFD) galaxies are a promising probe for dark matter (DM) physics as they are the most DM-dominated systems known. The Milky Way (MW) hosts many UFDs for which th…
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…
Testing the isothermal Jeans model for self-interacting dark matter halos in the collapse phase
Shubo Li, Moritz S. Fischer, Zixiang Jia +3
We benchmark the semi-analytical isothermal Jeans model against a high-resolution isolated N-body simulation that follows a self-interacting dark matter (SIDM) halo into deep core…
Connecting Leptogenesis to CP Violation in Neutrino Mixings in a Tri-bimaximal Mixing model
R. N. Mohapatra, Hai-Bo Yu
We show that in a recently proposed model for tri-bimaximal mixing pattern for neutrinos, CP violating phases in neutrino mixings are directly responsible for lepton asymmetr…
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…
Testing the parametric model for self-interacting dark matter using matched halos in cosmological simulations
Daneng Yang, Ethan O. Nadler, Hai-Bo Yu
We systemically evaluate the performance of the self-interacting dark matter (SIDM) halo model proposed in arXiv:2305.16176 with matched halos from high-resolution cosmological CDM…
Too Big To Fail in Light of Gaia
Manoj Kaplinghat, Mauro Valli, Hai-Bo Yu
We point out an anti-correlation between the central dark matter (DM) densities of the bright Milky Way dwarf spheroidal galaxies (dSphs) and their orbital pericenter distances inf…
The Odd Dark Matter Halos of Isolated Gas-rich Ultradiffuse Galaxies
Demao Kong, Manoj Kaplinghat, Hai-Bo Yu +2
We analyze circular velocity profiles of seven ultradiffuse galaxies (UDGs) that are isolated and gas-rich. Assuming that the dark matter halos of these UDGs have a Navarro-Frenk-W…
Astrophysical probes of inelastic dark matter with a light mediator
Gerardo Alvarez, Hai-Bo Yu
We consider an inelastic dark matter model, where a fermion is charged under a broken U(1) gauge symmetry, and introduce a tiny Majorana mass term to split the fermion into two sta…
Density spikes near black holes in self-interacting dark matter halos and indirect detection constraints
Gerardo Alvarez, Hai-Bo Yu
Self-interacting dark matter (SIDM) naturally gives rise to a cored isothermal density profile, which is favored in observations of many dwarf galaxies. The dark matter distributio…
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…
-GMSB with Type III Seesaw and Phenomenology
R. N. Mohapatra, Nobuchika Okada, Hai-Bo Yu
We show that when the supersymmetric SU(5) model is extended to explain small neutrino masses by the type III seesaw mechanism, the new {\bf 24}-dimensional fields needed for the p…
A graph model for the clustering of dark matter halos
Daneng Yang, Hai-Bo Yu
We use network theory to study topological features in the hierarchical clustering of dark matter halos. We use public halo catalogs from cosmological N-body simulations and constr…
Snowmass Cosmic Frontier Report
Aaron S. Chou, Marcelle Soares-Santos, Tim M. P. Tait +28
This report summarizes the current status of Cosmic Frontier physics and the broad and exciting future prospects identified for the Cosmic Frontier as part of the 2021 Snowmass Pro…
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…
Self-Interacting Dark Matter and Small-Scale Gravitational Lenses in Galaxy Clusters
Daneng Yang, Hai-Bo Yu
Recently, Meneghetti et al. reported an excess of small-scale gravitational lenses in galaxy clusters. We study its implications for self-interacting dark matter (SIDM), compared w…