Effects of polarisation on study of anomalous VVH interactions at a Linear Collider

TL;DR

This paper explores how beam and tau polarisation can enhance the detection of anomalous VVH interactions at a future linear collider, providing a model-independent sensitivity analysis.

Contribution

It introduces a method to probe VVH couplings using polarisation effects at the ILC, including considerations of ISR and beamstrahlung.

Findings

Polarisation improves sensitivity to anomalous VVH interactions.

Model-independent analysis of VVH couplings at 500 GeV.

Impact of ISR and beamstrahlung on measurements.

Abstract

We investigate the use of beam polarisation as well as final state $\tau$ polarisation effects in probing the interaction of the Higgs boson with a pair of heavy vector bosons in the process $e^+ e^- \to f \bar f H$, where $f$ is any light fermion. The sensitivity of the International Linear Collider (ILC) operating at $\sqrt s=500$ GeV, to such $VVH$($V = W/Z$) couplings is examined in a model independent way. The effects of ISR and beamstrahlung are discussed.