Di-Higgs signatures from R-parity violating supersymmetry as the origin of neutrino mass

TL;DR

This paper explores a supersymmetric model with R-parity violation that naturally explains neutrino masses and predicts unique di-Higgs signatures with missing energy at the LHC, distinguishing it from Standard Model processes.

Contribution

It introduces a bilinear R-parity violating SUSY scenario with a Higgsino-like LSP, analyzing its collider signatures and proposing observables to differentiate from backgrounds.

Findings

LSP predominantly decays to neutrino and Higgs boson

Distinct di-Higgs plus missing energy signature identified

Proposed kinematic observables effectively suppress backgrounds

Abstract

Motivated by the naturalness and neutrino mass generation, we study a bilinear R-parity violating supersymmetric scenario with a light Higgsino-like lightest supersymmetric particle (LSP). We observe that the LSP dominantly decays to $\nu h$ in a large part of the parameter space, and thus study the pair production of electroweakinos followed by the decays $\tilde\chi^\pm_1\to \tilde\chi^0_1 W^{\pm*}$ and $\tilde\chi^0_1\to \nu h$. This leads to an interesting signature of Higgs boson pair production associated with significantly large missing transverse energy which is grossly distinct from the di-Higgs production in the Standard Model. We investigate the perspective of probing such signatures by performing a realistic detector level simulation of both the signal and corresponding backgrounds for the high-luminosity high energy phase of the Large Hadron Collider (LHC). We also advocate some observables based on kinematical features to provide an excellent handle to suppress the backgrounds.