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

Understand

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.