Resonant heavy Higgs searches at the HL-LHC.

摘要: In this work, we show the importance of searches for heavy resonant scalars ($H$) and pseudoscalars ($A$). Taking cue from present searches, make projections in an extended scalar sector at high luminosity run Large Hadron Collider. We study three most relevant search channels, \textit{i.e.}, $H \to hh, \; H/A t\bar{t}$ $b\bar{b}H/A$. Upon studying multifarious final states double Higgs production, find that $b\bar{b}\gamma\gamma$ ($\sigma(pp H hh) \in [81.27,14.45]$ fb $m_H [300,600]$ GeV 95\% C.L.) $b\bar{b}b\bar{b}$ ($[5.4,2.5]$ [800,1000]$ channels are constraining. For $b\bar{b}H$ channel, can exclude $\sigma(pp b\bar{b}H) [22.2,3.7]$ [300,500]$ GeV. Finally, consider phenomenological Minimal Supersymmetric Standard Model as example impose various constraints our future direct search-limits obtain strong on $m_A-\tan{\beta}$ parameter space, where $m_A$ $\tan{\beta}$ respectively mass pseudoscalar ratio vacuum expectation values two doublets. Assuming boson decays only to (SM) states, hh b\bar{b}\gamma\gamma$ ($H t\bar{t}$) channel excludes low 4 ($m_A [400,800]$ GeV) CL. This weakens up $\sim 5.5$ when dominates. allowing non-SM decay modes, limits weaken.