Hadronic production and decays of Charginos and Neutralinos in Split Supersymmetry

Abstract

In the scenario recently proposed by Arkani-Hamed and Dimopoulos, the supersymmetric scalar particles are all very heavy, at least of the order of $10^9$ GeV but the gauginos, higgsino, and one of the CP-even neutral Higgs bosons remain light under a TeV. In addition to gluino production, the first SUSY signature would be pair production of neutralinos and/or charginos. Here we study, with explicit CP violation, the production of neutralinos and charginos at hadronic colliders as well as the possible decay modes. We notice that the branching ratio of the neutralino radiative decay can be sizable unlike the case with light sfermions. In particular, the decay of N3->N1+gamma has a branching ratio of the order O(1) percent. In colliders, it would give rise to signatures of an isolated single photon plus missing energy.

minor revisions and references added

References in corpus (13)

• Aspects of Split Supersymmetry
• PeV-Scale Supersymmetry
• Signatures of long-lived gluinos in split supersymmetry
• Dark Matter in the Finely Tuned Minimal Supersymmetric Standard Model
• Split Supersymmetry at Colliders
• Neutralino Dark Matter Detection in Split Supersymmetry Scenarios
• Electric Dipole Moment in the Split Supersymmetry Models
• Split Supersymmetry, stable gluino, and gluinonium
• One Loop Predictions of the Finely Tuned SSM
• Probing Split Supersymmetry with Cosmic Rays
• Chargino Pair Production at Linear Collider and Split Supersymmetry
• Splitting the split supersymmetry
• Signals for CP Violation in Split Supersymmetry

Cited by in corpus (8)

• The MSSM with heavy scalars
• Weak boson fusion production of supersymmetric particles at the LHC
• On Measuring Split-SUSY Neutralino and Chargino Masses at the LHC
• A minimal supersymmetric scenario with only μat the weak scale
• Hunting long-lived gluinos at the Pierre Auger Observatory
• Neutralino-nucleon interaction in the Split SUSY scenario of the Dark Matter
• Distinguishing split supersymmetry in Higgs signals at the Large Hadron Collider
• Radiative Neutralino Decay in Split Supersymmetry