Soft breaking of supersymmetry

The soft supersymmetry-breaking Lagrangian: theory and applications

“…(7.32)) is still controversial [630]. The question is regarding the existence of the source term 37) in which H i here denotes the neutral components of the two Higgs doublets. If such a source term is absent and the dominant source term is instead proportional to…”

“…The main result that will emerge from any fundamental theory which predicts low energy supersymmetry is the soft supersymmetry-breaking Lagrangian, L sof t [17,37]. As an example, consider string theory, which provides a consistent quantum theory of gravitational and gauge interactions.…”

“…The soft supersymmetry-breaking operators comprise a consistent truncation of all possible operators in that the presence of soft supersymmetry-breaking parameters does not regenerate "hard" supersymmetrybreaking terms at higher order. The complete set of possible soft supersymmetrybreaking parameters was first classified in the seminal papers [37,13,14,15]. The classic proof of Girardello and Grisaru [37] will not be repeated here.…”

“…The complete set of possible soft supersymmetrybreaking parameters was first classified in the seminal papers [37,13,14,15]. The classic proof of Girardello and Grisaru [37] will not be repeated here. The power counting method, which explains why certain terms are soft while others are not, is reviewed in Appendix A.…”

New RG-invariants of soft supersymmetry breaking parameters

“…The total Lagrangian with the soft SUSY breaking terms (4) can be written in terms of N = 1 superfields by introducing the spurion fields η = θ 2 andη =θ 2 [10]. Furthermore, the beta functions of M, A and Σ, where…”