Search for Mono-Higgs Signals at the LHC in the B-L Supersymmetric Standard Model

TL;DR

This paper investigates mono-Higgs signals at the LHC within the B-L supersymmetric standard model, focusing on new production channels involving heavy Z' or light h' mediators, and analyzes their detectability through clean Higgs decay signatures.

Contribution

It introduces novel mono-Higgs production channels in the B-L SUSY model and assesses their observability at the LHC with detailed kinematic analysis.

Findings

Mono-Higgs signals can be detected with current LHC capabilities.

Two clean decay channels, γγ and 4l, are promising for background suppression.

New mediator particles significantly affect mono-Higgs production rates.

Abstract

We study mono-Higgs signatures emerging in the $B-L$ supersymmetric standard model induced by new channels not present in the minimal supersymmetric standard model, i.e., via topologies in which the mediator is either a heavy $Z'$, with mass of ${\cal O}(2~{\rm TeV})$, or an intermediate $h'$ (the lightest CP-even Higgs state of $B-L$ origin), with mass of ${\cal O}(0.2~{\rm TeV})$. The mono-Higgs probe considered is the SM-like Higgs state recently discovered at the large hadron collider, so as to enforce its mass reconstruction for background reduction purposes. With this in mind, its two cleanest signatures are selected: $\gamma\gamma$ and $ZZ^*\to 4l$ ($l=e,~\mu$). We show how both of these can be accessed with foreseen energy and luminosity options using a dedicated kinematic analysis performed in presence of partonic, showering, hadronisation and detector effects.