# Bi$\boldsymbol{\nu}$o phenomenology at the LHC

## TL;DR

This paper investigates LHC constraints on an R-symmetric SUSY model with a pseudo-Dirac bino called biνo, analyzing how current and future data restrict squark and biνo masses based on their production and decay signatures.

## Contribution

It provides the first detailed recasting of LHC jets+missing energy searches to constrain biνo and squark masses in this specific R-symmetric SUSY framework.

## Key findings

- Squarks as light as 350 GeV are allowed if biνo is lighter than 150 GeV.
- Squarks heavier than 950 GeV are allowed regardless of biνo mass.
- Future LHC runs can probe squarks up to 1150 GeV.

## Abstract

We study the LHC constraints on an $R$-symmetric SUSY model, where the neutrino masses are generated through higher dimensional operators involving the pseudo-Dirac bino, named bi$\nu$o. We consider a particle spectrum where the squarks are heavier than the lightest neutralino, which is a pure bi$\nu$o. The bi$\nu$o is produced through squark decays and it subsequently decays to a combination of jets and leptons, with or without missing energy, via its mixing with the Standard Model neutrinos. We recast the most recent LHC searches for jets+missing energy with $\sqrt{s}=13~$TeV and $\mathcal{L}=36~{\rm fb}^{-1}$ of data to determine the constraints on the squark and bi$\nu$o masses in this model. We find that squarks as light as 350~GeV are allowed if the bi$\nu$o is lighter than 150~GeV and squarks heavier than 950~GeV are allowed for any bi$\nu$o mass. We also present forecasts for the LHC with $\sqrt{s}=13$~TeV and $\mathcal{L}=300~{\rm fb}^{-1}$ and show that squarks up to 1150~GeV can be probed.