Higgs and Z-boson Signatures of Supersymmetry

TL;DR

This paper explores how Higgsino pair production and decay in supersymmetry can produce distinctive di-boson signatures with missing energy, offering new avenues for discovery at colliders like the Tevatron.

Contribution

It introduces novel collider signatures involving Higgsinos decaying into Higgs and Z bosons with missing energy, expanding search strategies for supersymmetry.

Findings

Distinctive di-boson final states with missing energy identified

Potential for new supersymmetry discovery channels at colliders

Higgs final states could aid Higgs boson detection at Tevatron

Abstract

In supersymmetric theories of nature the Higgsino fermionic superpartner of the Higgs boson can arise as the lightest standard model superpartner depending on the couplings between the Higgs and supersymmetry breaking sectors. In this letter the production and decay of Higgsino pairs to the Goldstone fermion of supersymmetry breaking and the Higgs boson, h, or gauge bosons, Z or $\gamma$ are considered. Relatively clean di-boson final states, hh, $h \gamma$, hZ, $Z \gamma$, or ZZ, with a large amount of missing energy result. The latter channels provide novel discovery modes for supersymmetry at high energy colliders since events with Z bosons are generally rejected in supersymmetry searches. In addition, final states with real Higgs bosons can potentially provide efficient channels to discover and study a Higgs signal at the Fermilab Tevatron Run II.