The neutralino projector formalism for complex SUSY parameters

Abstract

We present a new formalism describing the neutralino physics in the context of the minimal supersymmetric model (MSSM), where CP violation induced by complex $M_1$ and $\mu$ parameters is allowed. The formalism is based on the construction of neutralino projectors, and can be directly generalized to non-minimal SUSY models involving any number of neutralinos. It extends a previous work applied to the real SUSY parameter case. In MSSM, the method allows to describe all physical observables related to a specific neutralino, in terms of its CP eigenphase and three complex numbers called its "reduced projector elements". As the experimental knowledge on the neutralino-chargino sectors will be being accumulated, the problem of extracting the various SUSY parameters will arise. Motivated by this, we consider various scenarios concerning the quantities that could be first measured. Analytical disentangled expressions determining the related SUSY parameters from them, are then derived, which also emphasize the efficiency of the formalism.

Version accepted in Phys. Rev. D. e-mail: [email protected]

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• Chargino and Neutralino Production at e+e- Colliders in the Complex MSSM: A Full One-Loop Analysis
• Neutralino pair production at CERN LHC
• Diagonalization of the neutralino mass matrix and boson-neutralino interaction
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• CP-sensitive spin-spin correlations in neutralino production at the ILC
• CP-Odd Phase Effects in a Left-Right Symmetric Chargino Sector
• Determining fundamental parameters from the chargino sector in Left-Right Supersymmetric models
• Determining neutralino parameters in Left-Right Supersymmetric Models