Resonant single chargino and neutralino versus fermion-antifermion production at the Linear Collider

TL;DR

This paper investigates resonant production of single charginos and neutralinos at a linear collider, highlighting parameter regions where these processes dominate and can lead to significant cascade decays, including effects from initial-state radiation.

Contribution

It identifies parameter regions where single chargino and neutralino production surpass fermion-antifermion channels, emphasizing the importance of resonance effects and cascade decays.

Findings

Single chargino and neutralino production can dominate over fermion-antifermion channels.

Resonant processes enable production of heavier superpartners at significant rates.

Initial-state radiation effects are significant in the analysis.

Abstract

We study single superparticle productions at the linear collider, putting particular emphasis on resonant processes. We find that there exists a wide region of model parameters where single chargino and neutralino productions dominate over R-violating fermion-antifermion final states. For certain values of mu and M_2 it is possible to produce even the heavier charginos and neutralinos at significant rates, amplifying the total cross section and obtaining interesting chains of cascade decays. Effects from initial-state radiation are also included.