Possibility of observing Higgs bosons at the ILC in the lepton-specific 2HDM

Abstract

The Higgs boson pair production at a linear $e^{+}{e}^{-}$ collider is analyzed in the $4\tau$ final state in the context of lepton-specific or type IV 2HDMs. Both beams are assumed to be unpolarized. The Higgs boson pairs (HA) are produced through off-shell $Z^{\ast }$ production and decay to $\tau$-jets which is the main decay channel for neutral Higgs bosons in type IV. Using a simplified detector simulation based on SiD detector at ILC, the 4$\tau$ signal is studied through the $\tau$-jet pair invariant mass reconstruction. Several benchmark scenarios are considered for center of mass energies of 500 and 1000 GeV at integrated luminosity of 500$f{b}^{-1}$. Among Standard Model (SM) background processes, the main background is $e^{+}{e}^{-}\to ZZ$ followed by $Z\to \tau \tau$. This background is however, well under control. With the luminosity assumed in the analysis, striking signals are obtained beyond the reach of LHC. Such signals would allow for precise determination of masses and cross sections and alredy much lower luminosities are sufficient for discovery.

10 pages, 6 figures

References in corpus (13)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• An Introduction to PYTHIA 8.2
• Search for Neutral MSSM Higgs Bosons at LEP
• A standard format for Les Houches Event Files
• Updated NNLO QCD predictions for the weak radiative B-meson decays
• Models of Yukawa interaction in the two Higgs doublet model, and their collider phenomenology
• A precision constraint on multi-Higgs-doublet models
• Basis-independent methods for the two-Higgs-doublet model II. The significance of tan(beta)
• Search for a CP-odd Higgs boson decaying to $Zh$ in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Fingerprinting non-minimal Higgs sectors
• Search for a heavy Higgs boson decaying into a $Z$ boson and another heavy Higgs boson in the $\ell \ell bb$ final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Analysis of b quark pair production signal from neutral 2HDM Higgs bosons at future Linear Colliders

Cited by in corpus (4)

• Charged Higgs decay to $W^{\pm }H$ at a high energy lepton collider
• Parameter dependence and analysis of the 2HDM neutral Higgs boson pair production and decay at future lepton colliders
• Kinematic corrections and reconstruction methods for neutral Higgs boson decay to $b\bar{b}$ in 2HDM type-I at future lepton colliders
• Heavy neutral 2HDM Higgs Boson Pair Production at CLIC Energies