Gauging MSSM global symmetries and SUSY breaking in de Sitter vacuum

Understand

We elaborate on a recent study of a model of supersymmetry breaking we proposed recently, in the presence of a tunable positive cosmological constant, based on a gauged shift symmetry of a string modulus, external to the Standard Model (SM) sector.

• Here, we identify this symmetry with a global symmetry of the SM and work out the corresponding phenomenology.
• A particularly attracting possibility is to use a combination of Baryon and Lepton number that contains the known matter parity and guarantees absence of dimension-four and five operators that violate B and L.