Abstract
In the framework of the Left–Right twin Higgs (LRTH) model, we consider the constrains from the latest search for high-mass dilepton resonances at the LHC and find that the heavy neutral boson ZH is excluded with mass below 2.76 TeV. Under these constrains, we study the Higgs–Gauge coupling production processes e+e−→ZH, e+e−→νeνe¯H and e+e−→e+e−H, top quark Yukawa coupling production process e+e−→tt¯H, Higgs self-couplings production processes e+e−→ZHH and e+e−→νeνe¯HH at e+e− colliders. Besides, we study the major decay modes of the Higgs boson, namely h→ff¯(f=b,c,τ), VV⁎(V=W,Z), gg, γγ. We find that the LRTH effects are sizable so that the Higgs boson processes at e+e− collider can be a sensitive probe for the LRTH model.
Highlights
The hunt for Higgs bosons is one of the most important goals at the Large Hadron Collider (LHC)
With the growingly accumulated date, the properties of this particle are consistent with those of Higgs boson predicted by the Standard Model (SM) [3, 4]
The most precise measurements will be performed in the clean environment of the future e+e− colliders, like the International Linear Collider (ILC) [5]
Summary
The hunt for Higgs bosons is one of the most important goals at the Large Hadron Collider (LHC). The most precise measurements will be performed in the clean environment of the future e+e− colliders, like the International Linear Collider (ILC) [5] It is well known, the main production processes of the Higgs boson in e+e− collisions are the Higgs-strahlung process e+e− → ZH and the W W fusion process e+e− → νeνeH. The cross section for the ZZ fusion process e+e− → e+e−H increases significantly with the center-of-mass (c.m.) energy increasing, and can exceeds that of ZH production around 1 TeV. These three processes can be well used to test the Higgs-Gauge couplings.
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