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Disoriented and plastic soft terms: a dynamical solution to the problem of supersymmetric flavor violations

We postulate that the orientation of the soft supersymmetry breaking terms in flavor space is not fixed by physics at the Planck scale; it is a dynamical variable of the low energy theory which depends on fields that have no potential. These fields can be thought of as either moduli or as the Nambu-...

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Detalles Bibliográficos
Autores principales: Dimopoulos, S., Giudice, G.F., Tetradis, N.
Lenguaje:eng
Publicado: 1995
Materias:
Acceso en línea:https://dx.doi.org/10.1016/0550-3213(95)00395-9
http://cds.cern.ch/record/280257
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author Dimopoulos, S.
Giudice, G.F.
Tetradis, N.
author_facet Dimopoulos, S.
Giudice, G.F.
Tetradis, N.
author_sort Dimopoulos, S.
collection CERN
description We postulate that the orientation of the soft supersymmetry breaking terms in flavor space is not fixed by physics at the Planck scale; it is a dynamical variable of the low energy theory which depends on fields that have no potential. These fields can be thought of as either moduli or as the Nambu-Goldstone bosons of the spontaneously broken flavor symmetry which is non-linearly realized by the soft terms. We show that the soft terms align with the quark and lepton masses, just as spins align with an external magnetic field. As a result, the soft terms conserve individual lepton numbers and do not cause large flavor 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 supersymmetric theories. We also propose theories in which the shape of the soft terms in flavor space is a dynamical variable of the low energy theory. This dynamically leads to partial degeneracy among sparticles and further supression of flavor violations. We compute the masses and couplings of the nearly massless moduli/goldstones and find that, at distances as large as \sim 30 m, they mediate potentially measurable long range forces and violations of the equivalence principle. The ideas of this paper suggest a connection between the space of moduli and the spontaneously broken flavor group.
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institution Organización Europea para la Investigación Nuclear
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spelling cern-2802572023-03-14T20:10:27Zdoi:10.1016/0550-3213(95)00395-9http://cds.cern.ch/record/280257engDimopoulos, S.Giudice, G.F.Tetradis, N.Disoriented and plastic soft terms: a dynamical solution to the problem of supersymmetric flavor violationsParticle Physics - PhenomenologyWe postulate that the orientation of the soft supersymmetry breaking terms in flavor space is not fixed by physics at the Planck scale; it is a dynamical variable of the low energy theory which depends on fields that have no potential. These fields can be thought of as either moduli or as the Nambu-Goldstone bosons of the spontaneously broken flavor symmetry which is non-linearly realized by the soft terms. We show that the soft terms align with the quark and lepton masses, just as spins align with an external magnetic field. As a result, the soft terms conserve individual lepton numbers and do not cause large flavor 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 supersymmetric theories. We also propose theories in which the shape of the soft terms in flavor space is a dynamical variable of the low energy theory. This dynamically leads to partial degeneracy among sparticles and further supression of flavor violations. We compute the masses and couplings of the nearly massless moduli/goldstones and find that, at distances as large as \sim 30 m, they mediate potentially measurable long range forces and violations of the equivalence principle. The ideas of this paper suggest a connection between the space of moduli and the spontaneously broken flavor group.We postulate that the orientation of the soft supersymmetry breaking terms in flavor space is not fixed by physics at the Planck scale; it is a dynamical variable of the low energy theory which depends on fields that have no potential. These fields can be thought of as either moduli or as the Nambu-Goldstone bosons of the spontaneously broken flavor symmetry which is non-linearly realized by the soft terms. We show that the soft terms align with the quark and lepton masses, just as spins align with an external magnetic field. As a result, the soft terms conserve individual lepton numbers and do not cause large flavor 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 supersymmetric theories. We also propose theories in which the shape of the soft terms in flavor space is a dynamical variable of the low energy theory. This dynamically leads to partial degeneracy among sparticles and further supression of flavor violations. We compute the masses and couplings of the nearly massless moduli/goldstones and find that, at distances as large as $\sim$ 30 m, they mediate potentially measurable long range forces and violations of the equivalence principle. The ideas of this paper suggest a connection between the space of moduli and the spontaneously broken flavor group.We postulate that the orientation of the soft supersymmetry-breaking terms 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 symmetry 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 flavor 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 supersymmetric theories. We also propose theories in which the shape of the soft terms in flavor space is a dynamical variable which depends on fields that have no tree level potential. This dynamically leads to partial degeneracy among sparticles and further suppression of flavor violations. The ideas of this paper suggest a connection between the space of moduli and the spontaneously broken flavor group.hep-ph/9504296CERN-TH-95-90CERN-TH-95-090CERN-TH-95-90oai:cds.cern.ch:2802571995-04-13
spellingShingle Particle Physics - Phenomenology
Dimopoulos, S.
Giudice, G.F.
Tetradis, N.
Disoriented and plastic soft terms: a dynamical solution to the problem of supersymmetric flavor violations
title Disoriented and plastic soft terms: a dynamical solution to the problem of supersymmetric flavor violations
title_full Disoriented and plastic soft terms: a dynamical solution to the problem of supersymmetric flavor violations
title_fullStr Disoriented and plastic soft terms: a dynamical solution to the problem of supersymmetric flavor violations
title_full_unstemmed Disoriented and plastic soft terms: a dynamical solution to the problem of supersymmetric flavor violations
title_short Disoriented and plastic soft terms: a dynamical solution to the problem of supersymmetric flavor violations
title_sort disoriented and plastic soft terms: a dynamical solution to the problem of supersymmetric flavor violations
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0550-3213(95)00395-9
http://cds.cern.ch/record/280257
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