Probing the Triple Higgs Self-Interaction at the Large Hadron Collider

Abstract

We propose a novel kinematic method to expedite the discovery of the double Higgs ($hh$) production in the ${\ell }^{+}{\ell }^{-}b\bar{b}+E_T/$ final state. We make full use of recently developed kinematic variables, as well as the variables $Topness$ for the dominant background (top quark pair production) and $Higgsness$ for the signal. We obtain a significant increase in sensitivity compared to the previous analyses which used sophisticated algorithms like boosted decision trees or neutral networks. The method can be easily generalized to resonant $hh$ production as well as other non-resonant channels.

Comments: 5 pages, 5 figures, matches the published version