Reconciling the 2 TeV Excesses at the LHC in a Linear Seesaw Left-Right Model

Understand

We interpret the 2 TeV excesses at the LHC in a left-right symmetric model with Higgs doublets and spontaneous $D$-parity violation.

• The light neutrino masses are understood via a linear seesaw, suppressed by a high $D$-parity breaking scale, and the heavy neutrinos have a pseudo-Dirac character.
• In addition, with a suppressed right-handed gauge coupling $g_R / g_L \approx 0.6$ in an $SO(10)$ embedding, we can thereby interpret the observed $eejj$ excess at CMS.
• We show that it can be reconciled with the diboson and dijet excesses within a simplified scenario based on our model.