447 citations · 1.8k across the 30 of their papers we have counts for
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New constraint from supernova explosions on light particles beyond the Standard Model
Allan Sung, Huitzu Tu, Meng-Ru Wu
We propose a new constraint on light (sub-GeV) particles beyond the Standard Model that can be produced inside the proto-neutron star core resulting from the core-collapse supernov…
Goldstone Boson Emission From Nucleon Cooper Pairing in Neutron Stars and Constraints on the Higgs Portal Models
Huitzu Tu
When a neutron star cools to below the critical temperature for the onset of superfluidity, nucleon pair breaking and formation (PBF) processes become the dominant mechanism for ne…
Supernovae and Weinberg's Higgs Portal Dark Radiation and Dark Matter
Huitzu Tu, Kin-Wang Ng
The observed burst duration and energies of the neutrinos from Supernova 1987A strongly limit the possibility of any weakly-interacting light particle species being produced in the…
Effects of Goldstone Bosons on Gamma-Ray Bursts
Huitzu Tu, Kin-Wang Ng
Gamma-ray bursts (GRBs) are the most energetic explosion events in the universe. An amount of gravitational energy of the order of the rest-mass energy of the Sun is released from…
Dark Photon as Fractional Cosmic Neutrino Masquerader
Kin-Wang Ng, Huitzu Tu, Tzu-Chiang Yuan
Recently, Weinberg proposed a Higgs portal model with a spontaneously broken global symmetry in which Goldstone bosons may be masquerading as fractional cosmic neutrinos. We…
Supernova Bounds on Weinberg's Goldstone Bosons
Wai-Yee Keung, Kin-Wang Ng, Huitzu Tu +1
Recently, Weinberg proposed a scenario where Goldstone bosons may be masquerading as fractional cosmic neutrinos. We calculate the energy loss rates through the emission of these G…
Global Neutrino Data Analysis and the Quest to Pin Down in Different Mixing Matrix Parametrizations
Melin Huang, S. D. Reitzner, Wei-Chun Tsai +1
Hints for sizable have been reported in earlier global neutrino oscillation data analyses as well as will be reported in this work, and quite recently by the Double…
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…
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,…
Unparticle Self-Interactions and Their Collider Implications
Jonathan L. Feng, Arvind Rajaraman, Huitzu Tu
In unparticle physics, operators of the conformal sector have self-interactions, and these are unsuppressed for strong coupling. The 3-point interactions are completely determined…
Upper Bounds on the Neutrino-Nucleon Inelastic Cross Section
L. A. Anchordoqui, Z. Fodor, S. D. Katz +2
Extraterrestrial neutrinos can initiate deeply developing air showers, and those that traverse the atmosphere unscathed may produce cascades in the ice or water. Up to now, no such…
Strong Neutrino-Nucleon Interactions at Ultrahigh Energies as a Solution to the GZK Puzzle
Z. Fodor, S. D. Katz, A. Ringwald +1
After a short review of the ultrahigh energy cosmic ray puzzle - the apparent observation of cosmic rays originating from cosmological distances with energies above the expected Gr…
Strongly interacting neutrinos as the highest energy cosmic rays
Z. Fodor, S. D. Katz, A. Ringwald +1
We show that all features of the ultrahigh energy cosmic ray spectrum from 10^{17} eV to 10^{21} eV can be described with a simple power-like injection spectrum of protons under th…
Bounds on the cosmogenic neutrino flux
Z. Fodor, S. D. Katz, A. Ringwald +1
Under the assumption that some part of the observed highest energy cosmic rays consists of protons originating from cosmological distances, we derive bounds on the associated flux…
Electroweak instantons as a solution to the ultrahigh energy cosmic ray puzzle
Z. Fodor, S. D. Katz, A. Ringwald +1
We propose a scenario in which a simple power-like primary spectrum for protons with sources at cosmological distances leads to a quantitative description of all the details of the…
Mini Black Holes from Ultrahigh Energy Cosmic Neutrinos
Huitzu Tu
We review the perhaps most exciting phenomenology of models with extra spatial dimensions and Planck scale near TeV: the production of mini black holes in ultrahigh energy particle…
Microscopic Black Hole Production in TeV-Scale Gravity
Huitzu Tu
Models with extra spatial dimensions and TeV-scale gravity offer the first opportunity to test the conjecture of black hole formation in trans-Planckian energy scattering with smal…
Black Holes at Neutrino Telescopes
M. Kowalski, A. Ringwald, H. Tu
In scenarios with extra dimensions and TeV-scale quantum gravity, black holes are expected to be produced in the collision of light particles at center-of-mass energies above the f…
Collider versus Cosmic Ray Sensitivity to Black Hole Production
A. Ringwald, H. Tu
In scenarios with extra dimensions and TeV-scale quantum gravity, black holes are expected to be produced copiously at center-of-mass energies above the fundamental Planck scale. T…
Higgs Bosons and the Indirect Search for WIMPs
V. A. Bednyakov, H. V. Klapdor-Kleingrothaus, H. Tu
We investigated the contribution of the MSSM Higgs bosons produced in the neutralino annihilation in the Earth and Sun to the total WIMPs detection signals. We found that this cont…