1305.0329 (Eung Jin Chun et al.)

Vacuum Stability, Perturbativity, EWPD and Higgs-to-diphoton in Type II
Seesaw    [PDF]

Eung Jin Chun, Hyun Min Lee, Pankaj Sharma

We study constraints from perturbativity and vacuum stability as well as the EWPD in the type II seesaw model. As a result, we can put stringent limits on the Higgs triplet couplings depending on the cut-off scale. The EWPD tightly constrain the Higgs triplet mass splitting to be smaller than about 40 GeV. Analyzing the Higgs-to-diphoton rate in the allowed parameter region, we show how much it can deviate from the Standard Model prediction for specific parameter points.

View original: http://arxiv.org/abs/1305.0329