Single-top-squark production via R-parity-violating supersymmetric couplings in hadron collisions

TL;DR

This paper investigates the potential to discover single top squark production via R-parity-violating couplings at hadron colliders, providing sensitivity estimates for current and future experimental runs.

Contribution

It presents the first detailed analysis of single top squark production via R-parity-violating couplings, including discovery prospects and bounds at the Fermilab Tevatron.

Findings

Discovery possible for certain mass and coupling ranges with 2 fb^{-1}

Existing data can set stronger bounds on R-parity-violating couplings

Potential to improve bounds by up to two orders of magnitude at run II

Abstract

Single-top-squark production via q q' -> \bar{\tilde{t_1}} probes R-parity-violating extensions of the minimal supersymmetric standard model though the \lambda''_{3ij} couplings. For masses in the range 180-325 GeV, and \lambda''_{3ij} > 0.02-0.06, we show that discovery of the top squark is possible with 2 fb^{-1} of integrated luminosity at run II of the Fermilab Tevatron. The bound on \lambda''_{3ij}$ can be reduced by up to an order of magnitude with existing data from run I, and by two orders of magnitude at run II if the top squark is not found.