DISORIENTED AND PLASTIC SOFT TERMS - A DYNAMICAL SOLUTION TO THE PROBLEM OF SUPERSYMMETRIC FLAVOR VIOLATIONS

Citation
S. Dimopoulos et al., DISORIENTED AND PLASTIC SOFT TERMS - A DYNAMICAL SOLUTION TO THE PROBLEM OF SUPERSYMMETRIC FLAVOR VIOLATIONS, Nuclear physics. B, 454(1-2), 1995, pp. 59-74
Citations number
33
Categorie Soggetti
Physics, Nuclear
Journal title
ISSN journal
05503213
Volume
454
Issue
1-2
Year of publication
1995
Pages
59 - 74
Database
ISI
SICI code
0550-3213(1995)454:1-2<59:DAPST->2.0.ZU;2-T
Abstract
We postulate that the orientation of the soft supersymmetry-breaking t erms in flavor space is not fixed by tree level physics at the Planck scale; it is a dynamical variable which depends on fields that have no tree level potential. These fields can be thought of as either moduli or as the Nambu-Goldstone bosons of the spontaneously broken flavor s ymmetry which is non-linearly realized by the soft terms. We show that the soft terms align with the quark and lepton Yukawa couplings, just as spins align with an external magnetic field. As a result, the soft terms conserve individual lepton numbers and do not cause large flavo r or CP violations. The vacuum adjusts so as to allow large sparticle splittings to naturally coexist with flavor conservation. Consequently , the resulting phenomenology is different from that of minimal supers ymmetric theories. We also propose theories in which the shape of the soft terms in flavor space is a dynamical variable which depends on fi elds that have no tree level potential. This dynamically leads to part ial degeneracy among sparticles and further suppression of flavor viol ations. The ideas of this paper suggest a connection between the space of moduli and the spontaneously broken flavor group.