Angular distributions as a probe of anomalous ZZH and gammaZH interactions at a linear collider with polarized beams

Understand

We examine the contribution of general Z*ZH and gamma*ZH three-point interactions arising from new physics to the Higgs production process e+e- -> HZ.

• From Lorentz covariance, each of these vertices may be written in terms of three (complex) form factors, whose real and imaginary parts together make six independent couplings.
• We take into account possible longitudinal or transverse beam polarization likely to be available at a linear collider.
• We show how partial cross sections and angular asymmetries in suitable combinations with appropriate beam polarizations, can be used to disentangle various couplings from one another.