Abstract
An H^pm W^{mp } Z interaction at the tree level is a common feature of new physics models that feature scalar triplets. In this study, we aim to probe the strength of the aforementioned interaction in a model-agnostic fashion at the futuristic 27 TeV proton-proton collider. We assume that the H^pm couples dominantly to (W^pm ,Z) and (t, b) and specifically study the processes that involve the H^pm W^{mp } Z vertex at the production level, that is, p p rightarrow H^pm j j and p p rightarrow Z H^pm . Moreover, we look into both H^pm rightarrow W^pm Z,~t b decays for either production process. Our investigations reveal that the H^pm j j production process has a greater reach compared to Z H^pm . Moreover, the discovery potential of a charged Higgs improves markedly with respect to the earlier studies corresponding to lower centre-of-mass energies. Finally, we recast our results in the context of the popular Georgi–Machacek model.
Highlights
A subset of extended Higgs sectors features additional SU (2)L scalar multiplets and all of them predict at least one singly charged scalar H +
Total Signal Significance (0% σsys_un ) Signal significance (2% (5%) σsys_un)
Background tth tt Z ttW WZZ ZZZ Zh Wh bbh Total Signal Signal significance (0% σsys_un) Signal significance (2% (5%) σsys_un)
Summary
A subset of extended Higgs sectors features additional SU (2)L scalar multiplets and all of them predict at least one singly charged scalar H +. The most popular of such extensions arguably is the Georgi–Machacek (GM) model (see [15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34] for a partial list of references) that features an SU (2)L × SU (2)R global symmetry in the scalar potential This framework predicts two charged Higgses both of which couple to W +, Z.
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