Revisiting the high-scale validity of Type-II seesaw model with novel LHC signature

Understand

The Type-II seesaw model is a well-motivated new physics scenario to address the origin of the neutrino mass issue.

• We show that this model can easily accommodate an absolutely stable vacuum until the Planck scale, however with strong limit on the exotic scalar masses and the corresponding mixing angle.
• We examine the model prediction at the current and future high luminosity run of the Large Hadron Collider (LHC) for the scalar masses and mixing angles fixed at such high-scale valid region.
• Specifically, we device the associated and pair production of the charged scalars as a new probe of the model at the LHC.