Abstract
We further develop a form factor formalism characterizing anomalous interactions of the Higgs-like boson (h) to massive electroweak vector bosons (V) and generic bilinear fermion states \( \left( \mathcal{F} \right) \). Employing this approach, we examine the sensitivity of pp → \( \mathcal{F} \) → V h associated production to physics beyond the Standard Model, and compare it to the corresponding sensitivity of h → V \( \mathcal{F} \) decays. We discuss how determining the Vh invariant-mass distribution in associated production at LHC is a key ingredient for model-independent determinations of hV \( \mathcal{F} \) interactions. We also provide a general discussion about the power counting of the form factor’s momentum dependence in a generic effective field theory approach, analyzing in particular how effective theories based on a linear and non-linear realization of the SU(2)L × U(1)Y gauge symmetry map into the form factor formalism. We point out how measurements of the differential spectra characterizing h → V \( \mathcal{F} \) decays and pp → \( \mathcal{F} \) → Vh associated production could be the leading indication of the presence of a nonlinear realization of the SU(2)L × U(1)Y gauge symmetry.
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Isidori, G., Trott, M. Higgs form factors in associated production. J. High Energ. Phys. 2014, 82 (2014). https://doi.org/10.1007/JHEP02(2014)082
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DOI: https://doi.org/10.1007/JHEP02(2014)082