Jennifer Girrbach (Garching):

Flavour Physics in an SO(10) Grand Unified Model

Abstract:

Grand unified theories open the possibility to transfer the neutrino mixing matrix U_PMNS to the quark sector. This is accomplished in a controlled way in a supersymmetric grand-unified model proposed by Chang, Masiero and Murayama (CMM model) where the atmospheric neutrino mixing angle induces large new b → s and τ → μ transitions. Relating the supersymmetric low-energy parameters to seven new parameters a₀, m₀², m_g̃, D, ξ, tan β and arg(μ) of this SO(10) model, we perform a correlated study of several flavour-changing neutral current (FCNC) processes. The CMM model can serve as an alternative benchmark scenario to the popular constraint MSSM.

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