Resonant heavy Higgs searches at the HL-LHC

Understand

In this work, we show the importance of searches for heavy resonant scalars ($H$) and pseudoscalars ($A$).

• Taking cue from the present searches, we make projections for searches in an extended scalar sector at the high luminosity run of the Large Hadron Collider.
• We study the three most relevant search channels, \textit{i.e.}, $H \to hh, \; H/A \to t\bar{t}$ and $b\bar{b}H/A$.
• Upon studying multifarious final states for the resonant double Higgs production, we find that the $b\bar{b}\gamma\gamma$ ($\sigma(pp \to H \to hh) \in [81.27,14.45]$ fb for $m_H \in [300,600]$ GeV at 95\% C.L.) and $b\bar{b}b\bar{b}$ ($[5.4,2.5]$ fb for $m_H \in [800,1000]$ GeV at 95\% C.L.) channels are the most constraining.