SUSY-P5: Chargino / Neutralino Analysis in the Fully Hadronic Final State

TL;DR

This study analyzes chargino and neutralino production in fully hadronic final states at an electron-positron collider, demonstrating the potential to measure their masses with high precision using simulation data.

Contribution

It presents a detailed simulation-based analysis of chargino and neutralino signals in hadronic final states, including mass measurement techniques and expected resolution.

Findings

Mass resolution of about 0.5 GeV for involved bosinos.

Effective separation of signal from background in simulated data.

Feasibility of precise mass measurements with 500/fb luminosity.

Abstract

The fully hadronic final states of two signal processes from an mSUGRA inspired scenario (SUSY-P5) are studied within a full simulation of the LDC' detector model. These are chargino pair and neutralino pair production, i.e. e+e- -> C1C1 -> qq'N1 qq'N1 and e+e- -> N2N2 -> qq'N1 qq'N1. Both processes have to be separated sufficiently from all background to measure the respective production cross sections and extract the masses of the involved bosinos, m(C1), m(N2) and m(LSP)=m(N1). This is achieved by fitting the energy spectra of the reconstructed gauge bosons while taking into account the finite width of the boson mass. From simulation data corresponding to 500/fb of luminosity, a mass resolution of about 0.5 GeV seems to be achievable.