Discovering Supersymmetry at the Tevatron in Wino LSP Scenarios

TL;DR

This paper proposes novel detection strategies for Wino lightest supersymmetric particles at the Tevatron, focusing on their unique decay signatures and associated triggers to extend discovery reach up to 300 GeV.

Contribution

It introduces new trigger methods and search strategies specifically tailored for Wino LSPs with small mass splittings, enhancing detection prospects at the Tevatron.

Findings

Potential to discover Winos up to 300 GeV mass

New trigger strategies improve detection sensitivity

Explores parameter space of sequestered sector models

Abstract

In supersymmetric models, Winos, partners of the SU(2) gauge bosons, may be the lightest supersymmetric particles (LSPs). For generic parameters, charged and neutral Winos are highly degenerate. Charged Winos travel macroscopic distances, but can decay to neutral Winos and extremely soft leptons or pions before reaching the muon chambers, thereby circumventing conventional trigger requirements based on energetic decay products or muon chamber hits. However, these charginos are detectable, and can be triggered on when produced in association with jets. In addition, we propose a new trigger for events with a high p_T track and low hadronic activity. For Tevatron Run II with luminosity 2 fb^-1, the proposed searches can discover Winos with masses up to 300 GeV and explore a substantial portion of the parameter space in sequestered sector models.