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

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.

Comments: LaTeX, 6 pages, To appear in the proceedings of the International Workshop on Linear Colliders, Sitges, Barcellona, Spain, April 28 - May 5, (1999)