Higgs-pair Production and Decay in Simplest Little Higgs Model

Understand

In the framework of the simplest little Higgs model (SLHM), we study the production of a pair of neutral CP-even Higgs bosons at the LHC.

• First, we examine the production rate and find that it can be significantly larger than the SM prediction.
• Then we investigate the decays of the Higgs-pair and find that for a low Higgs mass their dominant decay mode is hh->\eta\eta\eta\eta (\eta is a CP-odd scalar) while hh->b\bar{b}\eta\eta and hh->\eta\eta WW may also have sizable ratios.
• Finally, we comparatively study the rates of pp-> hh -> b\bar{b}\tau^+ \tau^-, pp->hh->b\bar{b}\gamma\gamma, and pp->hh->WWWW in the SLHM and the littlest Higgs models (LHT).