Charged lepton distributions as a probe of contact e+e-HZ interactions at a linear collider with polarized beams

Understand

We examine very general four-point interactions arising from new physics and contributing to the Higgs production process e+e- -> HZ.

• We write all possible forms for these interactions consistent with Lorentz invariance.
• We allow the possibility of CP violation.
• Contributions to the process from anomalous ZZH and gamma ZH interactions studied earlier arise as a special case of our four-point amplitude.