Looking for anomalous gamma-gamma-H and Z-gamma-H couplings at future linear collider

Abstract

We consider the possibility of studying anomalous contributions to the gamma-gamma-H and Z-gamma-H vertices through the process e-gamma--> e-H at future e-gamma linear colliders, with Sqrt(S)=500-1500 GeV. We make a model independent analysis based on SU(2)xU(1) invariant effective operators of dim=6 added to the standard model lagrangian. We consider a light Higgs boson (mostly decaying in bar(b)-b pairs), and include all the relevant backgrounds. Initial e-beam polarization effects are also analyzed. We find that the process e-gamma--> e-H provides an excellent opportunity to strongly constrain both the CP-even and the CP-odd anomalous contributions to the gamma-gamma-H and Z-gamma-H vertices.

LaTeX, 33 pages, 16 eps figures, extended section 5

References in corpus (5)

• An Interaction Region for Gamma-Gamma and Gamma-Electron Collisions at TESLA/SBLC
• Exact formulae for Higgs production through e gamma --> e H in the non-linear R_ξgauge
• Z-gamma-Higgs vertex effects in Higgs production at future e-gamma linear colliders
• Anomalous interactions in Higgs boson production at photon colliders
• Tests of Higgs Boson Couplings at a mu+mu- Collider

Cited by in corpus (3)

• An effective gauge-Higgs operators analysis of new physics associated with the Higgs
• Production of neutral and charged Higgs bosons of the MSSM at the future e-gamma colliders
• Higgs production in $e$ and real $\gamma$ collision