5 papers
Cosmic Evolution of the Standard Model Flavor Charges
Chee Sheng Fong, Sergio Manuel Cubides Pérez
Since all the Standard Model (SM) parameters have been measured to precision at the percent level or smaller, one would aim to have a framework which describes baryogenesis as prec…
Seesaw Cosmology
Nicolás Bernal, Chee Sheng Fong, Óscar Zapata
We study perturbative reheating in which the inflaton transfers its energy to the Standard Model through right-handed neutrinos (RHNs) responsible for light-neutrino masses via the…
Towards Precision Neutrino Fits in GUTs: Relevance of One-Loop Finite Corrections
Chee Sheng Fong, Shaikh Saad
In this work, we perform a dedicated analysis of fermion mass fits in the minimal grand unified theory (GUT), going beyond the tree-level approximation by incorporating on…
Electroweak Triplet Scalar Contribution to Leptogenesis
Chee Sheng Fong, Ketan M. Patel
We show that electroweak triplet scalar can significantly impact baryogenesis via leptogenesis in concrete and predictive GUTs, even when light neutrino masses arise predo…
Probing low-reheating scenarios with minimal freeze-in dark matter
Nicolás Bernal, Chee Sheng Fong, Óscar Zapata
The parameter space of freeze-in dark matter (DM) with mass through light dark photon (``minimal freeze-in DM'') is currently being probed by direct detection experiments thr…