5 papers · 1 filter
The shape of quark flavors
Shinsuke Kawai, Nobuchika Okada
We construct the Yukawa couplings of the quark sector as overlap integrals of Gaussian wave functions in extra spatial dimensions. Assuming that the wave function of each chiral fe…
A Model-Independent Approach to First-Order Phase Transitions, Gravitational Waves, and Primordial Magnetic Fields
Fayez Abu-Ajamieh, Nobuchika Okada
We employ a model-independent Effective Field Theory (EFT) to analyze the possibility of a strong First-Order Phase Transition (FOPT) in extensions Beyond the Standard Model (BSM).…
Disentangling new physics with quantum entanglement in production at future lepton colliders
Masato Arai, Kentarou Mawatari, Nobuchika Okada
We investigate quantum entanglement and Bell-inequality violation in top-antitop pair production at future lepton colliders such as the International Linear Collider (ILC) and mult…
Signatures of Long-Lived Heavy Neutral Leptons from Neutrinophilic Charged Higgs Pair Production at the LHC
Nobuchika Okada, Prasenjit Sanyal, Ravindra Kumar Verma
In the neutrinophilic Higgs doublet framework, the neutrino Dirac Yukawa couplings can be sizable because of the small vacuum expection value of the extra Higgs doublet, even for a…
Discovery prospects of a singly-charged scalar at TRISTAN
Joseph George, Nobuchika Okada, Dibyashree Sengupta +1
In this article, we study the associated production of a singly-charged () scalar along with a boson in the newly proposed collider (also known as TRISTAN) a…