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Flavour Geometry and Effective Yukawa Couplings in the MSSM · Around

2009

Flavour Geometry and Effective Yukawa Couplings in the MSSM

Ellis, John, Hodgkinson, Robert N., Lee, Jae Sik et al.

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We present a new geometric approach to the flavour decomposition of an arbitrary soft supersymmetry-breaking sector in the MSSM.

Our approach is based on the geometry that results from the quark and lepton Yukawa couplings, and enables us to derive the necessary and sufficient conditions for a linearly-independent basis of matrices related to the completeness of the internal [SU(3) x U(1)]^5 flavour space.
In a second step, we calculate the effective Yukawa couplings that are enhanced at large values of tan(beta) for general soft supersymmetry-breaking mass parameters.
We highlight the contributions due to non-universal terms in the flavour decompositions of the sfermion mass matrices.

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