Discovery and exclusion prospects for staus produced by heavy Higgs bosons decays at the LHC

ANÍBAL D. MEDINA; VÍCTOR MARTÍN LOZANO; ERNESTO ARGANDA; NICOLÁS MILEO

Advances in High Energy Physics

Hindawi Publishing

Lugar: Londres; Año: 2022 vol. 2022 p. 2569290 - 2569311

1687-7357

In a previous work we developed a search strategy for staus produced by the decay of theheavy CP-even Higgs boson H within the context of the large tan β regime of the minimalsupersymmetric standard model (MSSM) in an scenario of large stau mixing. Here we study theperformance of such search strategy by confronting it with the complementary mixing pattern inwhich decays of both the CP-even and CP-odd heavy Higgs bosons contribute to the productionof τe1τe∗2 + c.c pairs. Again, we focus on final states with two opposite-sign tau leptons andlarge missing transverse energy. We find that our proposed search strategy, although optimizedfor the large stau mixing scenario, is still quite sensitive to the complementary mixing pattern.For instance, with a total integrated luminosity of only 100 fb−1 we are able to exclude heavyHiggs masses above 850 GeV for average stau masses higher than 290 GeV. We also extendthe results reported in the preceding work for the large mixing scenario by including now theexclusion limits at 100 fb−1 and the prospects both for exclusion and discovery in a potentialhigh luminosity phase of the LHC (1000 fb−1). Finally, we discuss the possibility to distinguishthe two mixing scenarios when they share the same relevant mass spectrum and both reach thediscovery level with our search strategy.