Lightest U-parity Particle (LUP) dark matter

TL;DR

This paper proposes a U(1)' gauge symmetry as an alternative to R-parity in supersymmetric models, providing a unified mechanism for stabilizing both proton and dark matter candidates, including the Lightest U-parity Particle (LUP).

Contribution

It introduces a U(1)' symmetry that naturally stabilizes proton and dark matter, broadening the scope of supersymmetric models with alternative dark matter candidates.

Findings

U(1)' symmetry can stabilize proton and dark matter simultaneously.

LUP offers a new dark matter candidate compatible with various models.

Residual discrete symmetries from U(1)' ensure particle stability.

Abstract

We suggest a U(1)' gauge symmetry as an alternative to the usual R-parity of supersymmetric standard models, showing that it can also work as a common source of stabilities of proton and dark matter in addition to other attractive features. The residual discrete symmetries of a single U(1)' can provide stabilities to both the MSSM sector (proton) and the hidden sector (new dark matter candidate, LUP). The LUP can expand the viability of many models such as R-parity violating models and gauge mediation models regarding dark matter issue.