A bstract Electroweak precision measurements established that custodial symmetry is preserved to a good accuracy in the gauge sector after electroweak symmetry breaking. However, recent LHC results might be interpreted as pointing towards Higgs couplings that do not respect such symmetry. Motivated by this possibility, we reconsider the presence of an explicitly custodial breaking coupling in a generic Higgs parameterization. After briefly commenting on the large UV sensitivity of the T parameter to such a coupling, we perform a fit to results of Higgs searches at LHC and Tevatron, and find that the apparent enhancement of the ZZ channel with respect to WW can be accommodated. Two degenerate best-fit points are present, which we label ‘ Z philic’ and ‘dys Z philic’ depending on the sign of the hZZ coupling. Finally we highlight some measurements at future linear colliders that may remove such degeneracy.
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机译:Bstract Electroweak精密测量确定,在Electroweak对称性断开后,在规格扇区中保留了监护对称性的良好准确性。然而,最近的LHC结果可能被解释为指向不遵守这种对称性的HIGGS联轴器。通过这种可能性,我们重新考虑了在通用HGGS参数化中的明确监禁耦合的存在。在简要评论到这种耦合的T参数的大UV敏感性之后,我们对LHC和Tevatron的HIGG搜索的结果进行适合,并且可以容纳ZZ信道相对于WW的表观增强。存在两个退化的最佳选择,我们根据喷射耦合的标志标记'Z Philic'和'Dys Z Philic'。最后,我们在未来的线性侵略者中突出了一些测量,这可能会消除这种退化。
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