Chargino and Neutralino Masses at ILC

TL;DR

This paper discusses the precision measurement of chargino and neutralino masses at the ILC, emphasizing the importance of jet resolution and detector performance, with results showing sub-GeV mass uncertainties.

Contribution

It presents a detailed analysis of chargino and neutralino mass measurements using the SiD detector concept, highlighting the achievable precision and the role of jet resolution.

Findings

Mass uncertainties better than 1 GeV for charginos and neutralinos

Cross section uncertainties of 0.9% for charginos and 4.2% for neutralinos

Effective separation of W and Z bosons through hadronic decay products

Abstract

The chargino/neutralino pair production is one of the benchmarking processes of ILC. These processes are interesting not only because it allows high precision measurement of chargino and neutralino masses, but also for the reason that the separation of W and Z bosons through their hadronic decay products requires excellent jet resolution being a good benchmark of the detector performance. The analysis based on the SiD detector concept with four jets and missing energy final state will be presented. The uncertainty of chargino and neutralino cross sections can be determined with precision of 0.9% and 4.2% respectively. The mass uncertainties are obtained with a template fitting method achieving precision of better than 1 GeV.