128 citations · 989 across the 57 of their papers we have counts for
7 papers · 1 filter
Implication of the ALEPH 30 GeV dimuon resonance at the LHC
P. Ko, Jinmian Li, Chaehyun Yu
Recent reanalysis of ALEPH data on Z -> b bar{b} + X seems to indicate an existence of the dimuon excess around 30 GeV with a branching fraction for Z -> b bar{b} mu^+ mu^- around…
Interference effects of two scalar boson propagators on the LHC search for the singlet fermion DM
P. Ko, Jinmian Li
A gauge invariant UV-completion for singlet fermion DM interacting with the standard model (SM) particles involves a new singlet scalar. Therefore the model contains two scalar med…
Residual Non-Abelian Dark Matter and Dark Radiation
P. Ko, Yong Tang
We propose a novel particle physics model in which vector dark matter (VDM) and dark radiation (DR) originate from the same non-Abelian dark sector. We show an illustrating example…
Gravitational waves and Higgs boson couplings for exploring first order phase transition in the model with a singlet scalar field
Katsuya Hashino, Mitsuru Kakizaki, Shinya Kanemura +2
We calculate the spectrum of gravitational waves originated from strongly first order electroweak phase transition in the extended Higgs model with a real singlet field. In order t…
Double Higgcision: 125 GeV Higgs boson and a potential diphoton Resonance
Kingman Cheung, P. Ko, Jae Sik Lee +2
Searches for diphoton resonance have been shown to be very useful in discovering new heavy spin-0 or spin-2 particles. Supposing that a new heavy particle shows up in the diphoton…
Light dark photon and fermionic dark radiation for the Hubble constant and the structure formation
P. Ko, Yong Tang
Motivated by the tensions in the Hubble constant and the structure growth between results and other low redshift measurements, we discuss some cosmological eff…