4 papers
Impact of dark scalars on the radiative vertex
Nabarun Chakrabarty
An vertex, i.e, the interaction connecting a singly charged physical scalar to the gauge bosons is absent at the tree level in a scalar sector comprising onl…
Fingerprinting the contribution of colored scalars to the vertex
Nabarun Chakrabarty, Indrani Chakraborty, Dilip Kumar Ghosh
Color-octet scalars arise in various Grand Unification scenarios and also in other models of new physics. They are also postulated for minimal flavour violation. Purely phenomenolo…
Relic density of Dark Matter in the Inert Doublet Model beyond Leading Order. I) The Heavy Mass Case
Shankha Banerjee, Fawzi Boudjema, Nabarun Chakrabarty +2
A full renormalisation of the Inert Doublet Model (IDM) is presented and exploited for a precise calculation of the relic density of Dark Matter (DM) at one-loop. In this first pap…
Charged scalars confronting neutrino mass and muon g-2 anomaly
Nabarun Chakrabarty, Cheng-Wei Chiang, Takahiro Ohata +1
The present work introduces two possible extensions of the Standard Model Higgs sector. In the first case, the Zee-Babu type model for the generation of neutrino mass is augmented…