Soft Supersymmetry Breaking from Gaugino Condensation
arXiv:hep-ph/9407392 · doi:10.1016/0370-2693(95)80008-L
Abstract
We study the structure of soft breaking terms in the context of a gaugino condensation scenario. Assuming that the Supergravity Lagrangian is the correct quantum field theory limit, at some momentum scale , of a more fundamental one, we demonstrate that the correct result is obtained simply by substituting, in the tree level Supergravity Lagrangian, (the gaugino condensate) by its vacuum expectation value . In string inspired scenarios this implies, in particular, that the scalar masses are vanishing at the string tree-level and receive a contribution, at the one loop level, which is proportional to the Green Schwarz coefficient . Our results do not agree with the ones obtained in the effective Lagrangian approach. We study in detail the origin of this discrepancy, and we argue that the use of the supertrace anomaly to determine the effective theory for the condensate does not fix its gravitational interactions, leaving the soft breaking terms and the vacua of the theory unspecified.
Latex, 18 pages, 4 postcript figures appended at the end (they can be inserted in the text using the macro epsf.tex), OUTP-94-16P
References in corpus (10)
- Model-Independent Analysis of Soft Terms in Effective Supergravity and in String Theory
- Towards a Theory of Soft Terms for the Supersymmetric Standard Model
- Duality Anomaly Cancellation, Minimal String Unification and the Effective Low-Energy Lagrangian of 4-D Strings
- Moduli Corrections to Gauge and Gravitational Couplings in four dimensional Superstrings
- A Natural Solution to the MU Problem
- Moduli Corrections to Gravitational Couplings from String loops
- Soft SUSY Breaking Terms in Stringy Scenarios: Computation and Phenomenological Viability
- Phenomenological Implications of Supersymmetry Breaking by the Dilaton
- Gaugino condensation in 4-D superstring models
- Towards a unified string supergravity model