Leptogenic Supersymmetry

TL;DR

Leptogenic supersymmetry predicts distinctive collider signatures like multiple leptons and long-lived sleptons, enabling early detection and precise mass measurements at the LHC with relatively low data.

Contribution

This paper introduces leptogenic supersymmetry as a testable scenario with unique signatures, facilitating Higgs and superparticle discovery and mass determination at the LHC.

Findings

Detectable signatures at 10 TeV with 200 pb^-1 data

Higgs discovery via 4 leptons+4 jets channel

Masses of superparticles measurable with 1 fb^-1 at 14 TeV

Abstract

Leptogenic supersymmetry is a scenario characterized by cascade decays with copious lepton production. Leptogenic models have striking signatures that can be probed by the LHC even in the 10 TeV run with as little as 200 pb^-1 of data, provided the squark masses are about 1 TeV. Leptogenic supersymmetry spectrum arises in several well-motivated models and its signatures are long-lived sleptons, numerous isolated leptons, abundant Higgs production, rather energetic jets, and no missing energy. The Higgs can be discovered in the h->b bbar mode via the 4 leptons+4 jets channel because the leptons accompanying Higgs production suppress the background. The superparticle masses in leptogenic supersymmetry can be measured efficiently due to lack of missing energy and high lepton multiplicity. We estimate that 1 fb^-1 of integrated luminosity is sufficient to determine the light Higgs, neutralinos, charginos, slepton, sneutrino and squark masses in a 14 TeV run.