477 citations · 2.2k across the 45 of their papers we have counts for
45 papers
Irreducible Bhabha background in the detection of muonium-antimuonium conversion
Mitrajyoti Ghosh, Kevin Liguori, Takemichi Okui +1
Experiments such as MACS and the proposed MACE study muonium-antimuonium conversion by the energies of the final-state . The and from an antimuonium decay tend t…
New Bounds on Heavy QCD Axions from Big Bang Nucleosynthesis
Tae Hyun Jung, Takemichi Okui, Kohsaku Tobioka +1
We study Big Bang Nucleosynthesis (BBN) constraints on heavy QCD axions. BBN offers a powerful probe of new physics that modifies the neutron-to-proton ratio during the process, th…
Dynamics of the Fermion-Rotor System
Vazha Loladze, Takemichi Okui, David Tong
We explore the dynamics of the fermion-rotor system, a simple impurity model in d=1+1 dimensions that consists of a collection of purely right-moving fermions interacting with a qu…
Neutrino properties from muonium-antimuonium mixing
Mitrajyoti Ghosh, Kevin Liguori, Takemichi Okui +1
The nature of neutrino mass -- whether neutrinos are Dirac or Majorana particles -- remains one of the central open questions in particle physics. While observation of neutrinoless…
Monopole-Fermion Scattering and the Solution to the Semiton/Unitarity Puzzle
Vazha Loladze, Takemichi Okui
We study Polchinski's "fermion-rotor system" as an accurate description of charged Weyl fermions scattering on a magnetic monopole core in the limit of zero gauge coupling. Traditi…
Decoding the excess at Belle II: kinematics, operators, and masses
Kåre Fridell, Mitrajyoti Ghosh, Takemichi Okui +1
An excess in the branching fraction for recently measured at Belle II may be a hint of new physics. We perform thorough likelihood analyses for different new physi…