Benchmark Suggestions for Resonant Double Higgs Production at the LHC for Extended Higgs Sectors

Abstract

In this note we present benchmark scenarios for resonant double Higgs production at the $13$TeV LHC in the 2HDM+S model and the $Z_3$ Next-to-Minimal Supersymmetric Standard Model (NMSSM), which may be accessible with 300 fb${}^{-1}$ of data. The NMSSM Higgs sector can be mapped onto the 2HDM+S. We show benchmark points and relevant parameter planes in the 2HDM+S for three sets of signatures: ($A\to h_{125}a,H\to h_{125}h)$, ($A\to ah,H\to hh,H\to aa)$, and ($H\to h_{125}{h}_{125}$). The first two signatures are optimized in what we call $Z$-Phobic scenarios where $H/A$ decays into final states with $Z$ bosons are suppressed. The last signature, $h_{125}$ pair production, is directly proportional to the misalignment of $h_{125}$ with the interaction state sharing the couplings of a SM Higgs boson, and hence is presented in the Max Misalignment scenario. We also present two NMSSM benchmark points for the ($A\to h_{125}a,H\to h_{125}h)$ signatures. The benchmark scenarios presented here are based on Refs. [1,2].

arXiv comment36 pages, 13 figures. v2: added plots of relevant branching ratios. added constraints from ZZ/WW production for Max Misalignment scenario. arXiv admin note: text overlap with arXiv:1901.02332

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