Di-Higgs production (${\hat{I}}^3{\hat{I}}^3\to hh$) in Composite Models

Abstract

In Standard Model (SM) Higgs Boson pair production initiated by photons (${\hat{I}}^3{\hat{I}}^3\to hh$) is loop-generated process and thereby very sensitive to any new couplings and particles that may come in loops. The Composite Higgs Models provide an alternate mechanism to address the hierarchy problem of SM where Higgs instead of being an elementary field could be a bound state of a strongly interacting sector. These set of models apart from modifying the SM Higgs couplings could also introduce new effective couplings that can have substantial impact on the loop processes. In this work we have studied the impact of such modifications by Composite Higgs models in ${\hat{I}}^3{\hat{I}}^3\to hh$ production process.

10 pages, 7 figures, minor updates, Talk presented at the International Workshop on Future Linear Colliders (LCWS2021), 15-18 March 2021. C21-03-15.1