Updated Bounds on the Minimal Left-Right Symmetric Model from LHC Dilepton Resonance Searches

The Left-Right model is a popular extension of the Standard Model that features three new neutral gauge bosons, W±R and ZR. Collider searches for a Left-Right symmetry are often concentrated on the charged right-handed current, but in this work, we take advantage of the dilepton data at the LHC with center-of-mass energy of 13 TeV and 139 fb⁻¹ of integrated luminosity to place lower mass bounds in the ZR mass based on the p\,p → ZR → ⁺ \, ⁻ process. We vary the SU(2)R gauge coupling from gR=0.4 to gR=1.0, and impose MZR>4.9 TeV and M_ZR>6.1 TeV, respectively. Lastly, we put our findings into perspective with WR searches at the LHC and show that our limits cover an unexplored region of parameter space, where the right-handed neutrino is heavier than the WR boson.