Testing Higgs models via the $H^{\pm }{W}^{\mp }Z$ vertex by a recoil method at the International Linear Collider

Abstract

In general, charged Higgs bosons $H^{\pm }$ appear in non-minimal Higgs models. The $H^{\pm }{W}^{\mp }Z$ vertex is known to be related to the violation of the global symmetry (custodial symmetry) in the Higgs sector. Its magnitude strongly depends on the structure of the exotic Higgs models which contain higher isospin $SU(2{)}_L$ representations such as triplet Higgs bosons. We study the possibility of measuring the $H^{\pm }{W}^{\mp }Z$ vertex via single charged Higgs boson production associated with the $W^{\pm }$ boson at the International Linear Collider (ILC) by using the recoil method. The feasibility of the signal $e^{+}{e}^{-}\to H^{\pm }{W}^{\mp }\to \ell \nu jj$ is analyzed assuming the polarized electron and positron beams and the expected detector performance for the resolution of the two-jet system at the ILC. The background events can be reduced to a considerable extent by imposing the kinematic cuts even if we take into account the initial state radiation. For a relatively light charged Higgs boson whose mass $m_{H^{\pm }}$ is in the region of 120-130 GeV $<m_{H^{\pm }}<m_W+m_Z$, the $H^{\pm }{W}^{\mp }Z$ vertex would be precisely testable especially when the decay of $H^{\pm }$ is lepton specific. The exoticness of the extended Higgs sector can be explored by using combined information for this vertex and the rho parameter.

22 pages, 23 figures

References in corpus (10)

• Models of Yukawa interaction in the two Higgs doublet model, and their collider phenomenology
• Unitarity bounds in the Higgs model including triplet fields with custodial symmetry
• The LHC Discovery Potential of a Leptophilic Higgs
• The Leptonic Higgs as a Messenger of Dark Matter
• Charged Higgs phenomenology in the lepton-specific two Higgs doublet model
• Higgs couplings in a model with triplets
• Light MSSM Higgs boson scenario and its test at hadron colliders
• Associated charged Higgs and W boson production in the MSSM at the CERN Large Hadron Collider
• Potential for measuring the H^\pm W^\mp Z^0 vertex from WZ fusion at the Large Hadron Collider
• Charged Higgs-boson production in association with an electron and a neutrino at electron-positron colliders

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• Searching for the doubly-charged Higgs bosons in the Georgi-Machacek model at the electron-proton colliders
• Searching for the heavy custodial fiveplet Higgs in the Georgi-Machacek model at the International Linear Collider
• CP Violation in a Model with Higgs Triplets