635 citations · 4.5k across the 47 of their papers we have counts for
18 papers · 1 filter
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…
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…
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…
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…
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…
Signatures of Self-Interacting Dark Matter in the Matter Power Spectrum and the CMB
Ran Huo, Manoj Kaplinghat, Zhen Pan +1
We consider a self-interacting dark matter model in which the massive dark photon mediating the self-interaction decays to light dark fermions to avoid over-closing the universe. W…
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…
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 dir…
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…
Self-interacting Dark Matter Benchmarks
Manoj Kaplinghat, Sean Tulin, Hai-Bo Yu
Dark matter self-interactions have important implications for the distributions of dark matter in the Universe, from dwarf galaxies to galaxy clusters. We present benchmark models…
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…
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…
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…
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…
Halo Shape and Relic Density Exclusions of Sommerfeld-Enhanced Dark Matter Explanations of Cosmic Ray Excesses
Jonathan L. Feng, Manoj Kaplinghat, Hai-Bo Yu
Dark matter with Sommerfeld-enhanced annihilation has been proposed to explain observed cosmic ray positron excesses in the 10 GeV to TeV energy range. We show that the required en…
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. Th…
Leptogenesis, Symmetry and
R. N. Mohapatra, S. Nasri, Haibo Yu
We show that in theories where neutrino masses arise from type I seesaw formula with three right handed neutrinos and where large atmospheric mixing angle owes its origin to an app…
Reactor Searches for Neutrino Magnetic Moment as a Probe of Extra Dimensions
R. N. Mohapatra, Siew-Phang Ng, Haibo Yu
We present calculations of the magnetic moment contribution to neutrino electron scattering in large extra dimension brane-bulk models (LED) with three bulk neutrinos. We discuss t…