Simulation Study of W Boson + Dark Matter Signatures for Identification of New Physics

TL;DR

This study uses simulation to analyze W boson and dark matter signatures at the ILC, aiming to distinguish different beyond-standard-model theories based on production angle distributions and mass reconstruction.

Contribution

It introduces a method to differentiate models like Inert Higgs, SUSY, and Little Higgs through angular distributions and mass reconstruction at the ILC.

Findings

Models show distinguishable production angle distributions.

Effective discrimination achieved at 500 GeV with 500 fb^-1.

Mass determination enables model differentiation.

Abstract

Identification of beyond-standard-models including WIMP dark matter is studied in four particle final state with a W boson pair and a WIMP pair at the International Linear Collider. Models with different spin structures give distinguishable production angle distributions. After the mass determination in each model, the production angle is reconstructed using the four momentum of W bosons with a back-to-back constraint. Three models of Inert Higgs, Supersymmetry and Little Higgs are considered. Discrimination power at 200 fb and 40 fb signal cross section with 500 fb-1 luminosity at sqrt(s) = 500 GeV is obtained.