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Bounds on anomalous gamma-gamma-H and Z-gamma-H couplings at future e-gamma linear colliders

E. Gabrielli·V. A. Ilyin·B. Mele
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Abstract

We study the bounds on the anomalous contributions to the gamma-gamma-H and Z-gamma-H vertices that can be obtained via the process e-gamma-->e H. We consider the representative case of an intermediate Higgs mass production of MH=120 GeV and for a center of mass energy of Sqrt{S}=500 GeV and Sqrt{S}=1500 GeV. We use a model independent analysis based on SU(2)xU(1) invariant operators of dimension 6 added to the Standard Model lagrangian. We find that this process provides an excelent way to put strong constraints both in the sector of CP-even and CP-odd anomalous couplings contribution to the gamma-gamma-H and Z-gamma-H vertices.

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E. Gabrielli, V. A. Ilyin, B. Mele. 1999-07-30. Bounds on anomalous gamma-gamma-H and Z-gamma-H couplings at future e-gamma linear colliders. https://arxiv.org/abs/hep-ph/9907574

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