7 papers · 1 filter
Good flavor search in SU(5): a machine learning approach
Fayez Abu-Ajamieh, Shinsuke Kawai, Nobuchika Okada
We revisit the fermion mass problem of the grand unified theory using machine learning techniques. The original model proposed by Georgi and Glashow is incompatible…
Novel Bounds From The Weak Gravity and Festina Lente Conjectures
Fayez Abu-Ajamieh, Pratik Chattopadhyay, Nobuchika Okada +2
We demonstrate that the Weak Gravity Conjecture (WGC) and the Festina-Lente Conjecture (FLC) yield novel bounds on fifth force searches and milli-Charged Particles (mCPs), as well…
Complementarity between gravitational wave signatures and Higgs precision measurements of a classically conformal hidden U(1) extended Standard Model
Victor Baules, Nobuchika Okada
We consider a classically conformal extension of the Standard Model (SM) with a hidden gauge symmetry, where the symmetry is radiatively broken via the Coleman-Weinbe…
Impact of Non-Thermal Leptogenesis with Early Matter Domination on Gravitational Waves from First-order Phase Transition
Dilip Kumar Ghosh, Anish Ghoshal, Koustav Mukherjee +2
We study the impact of non-thermal leptogenesis on the spectrum of gravitational waves (GWs) produced by a strong first-order phase transition in the early Universe. We consider a…
Novel and Updated Bounds on Flavor-Violating Z Interactions in the Quark Sector
Fayez Abu-Ajamieh, Amine Ahriche, Suman Kumbhakar +1
We derive bounds on the flavor-violating (FV) couplings of the boson to quarks and present future sensitivity projections. Our analysis shows that the current bounds on the FV…
Kination-like Era Driven by the Effective Inflaton/Higgs Potential
Anish Ghoshal, Nobuchika Okada, Arnab Paul
Based on the minimal extended Standard Model, we explore cosmic inflation where the Higgs field serves as the inflaton. We demonstrate that a stiff era with an eq…
Novel and Updated Bounds on Flavor-violating Z Interactions in the Lepton Sector
Fayez Abu-Ajamieh, Amine Ahriche, Nobuchika Okada
We investigate the experimental bounds on the Flavor-Violating (FV) couplings of the boson to the charged leptons. In addition to the direct LHC searches for FV decays to l…