Summary: | We explore the prospect of Yukawa production of a light boson which can exist in an extended Higgs sector. A particularly interesting case is the light pseudoscalar in Type-X two Higgs doublet model which can explain the anomalous magnetic moment of muon at large tanβ. Considering ILC Higgs factory with s=250 GeV, we show that the available parameter space can be fully examined by the (tau) Yukawa process at 5σ. We also demonstrate the mass reconstruction of such a light particle which helps to sizably minimize the background events. Keywords: Two Higgs doublet models, Light (pseudo)scalar, Lepton collider, ILC, Yukawa process, Higgs factory
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