Analysis of the Neutralino System in Three--Body Leptonic Decays of Neutralinos

Abstract

Neutralinos ${\tilde{\chi }}^0$ in supersymmetric theories, the spin--1/2 Majorana--type superpartners of the U(1) and SU(2) neutral electroweak gauge bosons and SU(2) neutral Higgs bosons, are expected to be among light supersymmetric particles so that they can be produced copiouslyvia direct pair production and/or from cascade decays of other sparticles such as sleptons at the planned Large Hadron Collider and the prospective International Linear Collider. Considering the prospects of having both highly polarized neutralinos and possibility of reconstructing their decay rest frames, we provide a systematic investigation of the three--body leptonic decays of the neutralinos in the minimal supersymmetric standard model and demonstrate alternative ways for probing the Majorana nature of the neutralinos and CP violation in the neutralino system.

arXiv commentVersion to appear in Eur.Phys.J.C

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• Neutralino Decays in the Complex MSSM at One-Loop: a Comparison of On-Shell Renormalization Schemes
• Probing CP Violation with and without Momentum Reconstruction at the LHC
• CP asymmetries with Longitudinal and Transverse Beam Polarizations in Neutralino Production and Decay into the Z^0 Boson at the ILC
• CP asymmetries in chargino production and decay: the three-body decay case
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• CP violation at one loop in the polarization-independent chargino production in e+e- collisions
• Normal tau polarisation as a sensitive probe of CP violation in chargino decay
• Measurement of CP asymmetries in neutralino production at the ILC
• Testing the CP-violating MSSM in stau decays at the LHC and ILC
• SUSY CP phases and asymmetries at colliders
• CP asymmetries in the supersymmetric trilepton signal at the LHC
• CP-sensitive spin-spin correlations in neutralino production at the ILC
• LHC/ILC Interplay in SUSY Searches
• Probing CP Violation with Kinematic Reconstruction at the LHC
• Supersymmetry at and beyond the LHC
• Implementation of full and simplified likelihoods in CheckMATE