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Gauge Mediation beyond Minimal Flavor Violation

We study a minimal modification of Gauge Mediation in which the messenger sector couples directly to the MSSM matter fields. These couplings are controlled by the same dynamics that explain the flavor hierarchies, and therefore are parametrically as small as the Yukawas. This setup gives rise to an...

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Detalles Bibliográficos
Autores principales: Calibbi, Lorenzo, Paradisi, Paride, Ziegler, Robert
Lenguaje:eng
Publicado: 2013
Materias:
Acceso en línea:https://dx.doi.org/10.1007/JHEP06(2013)052
http://cds.cern.ch/record/1538095
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author Calibbi, Lorenzo
Paradisi, Paride
Ziegler, Robert
author_facet Calibbi, Lorenzo
Paradisi, Paride
Ziegler, Robert
author_sort Calibbi, Lorenzo
collection CERN
description We study a minimal modification of Gauge Mediation in which the messenger sector couples directly to the MSSM matter fields. These couplings are controlled by the same dynamics that explain the flavor hierarchies, and therefore are parametrically as small as the Yukawas. This setup gives rise to an interesting SUSY spectrum that is calculable in terms of a single new parameter. Due to large A-terms, the model can easily accommodate a 126 GeV Higgs with a relatively light SUSY spectrum. The flavor structure depends on the particular underlying flavor model, but flavor-violating effects arise dominantly in the up-sector and are strongly suppressed in Delta F =2 observables. This strong suppression is reminiscent of what happens in the case of wave function renormalization or Partial Compositeness, despite the underlying flavor model can be a simple U(1) flavor model (which in the context of Gravity Mediation suffers from strong Delta F =2 constraints). This structure allows to account for the recent observation of direct CP violation in D-meson decays.
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spelling cern-15380952023-03-12T04:19:51Zdoi:10.1007/JHEP06(2013)052http://cds.cern.ch/record/1538095engCalibbi, LorenzoParadisi, ParideZiegler, RobertGauge Mediation beyond Minimal Flavor ViolationParticle Physics - PhenomenologyWe study a minimal modification of Gauge Mediation in which the messenger sector couples directly to the MSSM matter fields. These couplings are controlled by the same dynamics that explain the flavor hierarchies, and therefore are parametrically as small as the Yukawas. This setup gives rise to an interesting SUSY spectrum that is calculable in terms of a single new parameter. Due to large A-terms, the model can easily accommodate a 126 GeV Higgs with a relatively light SUSY spectrum. The flavor structure depends on the particular underlying flavor model, but flavor-violating effects arise dominantly in the up-sector and are strongly suppressed in Delta F =2 observables. This strong suppression is reminiscent of what happens in the case of wave function renormalization or Partial Compositeness, despite the underlying flavor model can be a simple U(1) flavor model (which in the context of Gravity Mediation suffers from strong Delta F =2 constraints). This structure allows to account for the recent observation of direct CP violation in D-meson decays.We study a minimal modification of Gauge Mediation in which the messenger sector couples directly to the MSSM matter fields. These couplings are controlled by the same dynamics that explain the flavor hierarchies, and therefore are parametrically as small as the Yukawas. This setup gives rise to an interesting SUSY spectrum that is calculable in terms of a single new parameter. Due to large A-terms, the model can easily accommodate a 126 GeV Higgs with a relatively light SUSY spectrum. The flavor structure depends on the particular underlying flavor model, but flavor-violating effects arise dominantly in the up-sector and are strongly suppressed in Delta F =2 observables. This strong suppression is reminiscent of what happens in the case of wave function renormalization or Partial Compositeness, despite the underlying flavor model can be a simple U(1) flavor model (which in the context of Gravity Mediation suffers from strong Delta F =2 constraints). This structure allows to account for the recent observation of direct CP violation in D-meson decays.arXiv:1304.1453ULB-TH-13-05CERN-PH-TH-2013-067TUM-HEP-882-13ULB-TH-13-05CERN-PH-TH-2013-067TUM-HEP-882-13oai:cds.cern.ch:15380952013-04-05
spellingShingle Particle Physics - Phenomenology
Calibbi, Lorenzo
Paradisi, Paride
Ziegler, Robert
Gauge Mediation beyond Minimal Flavor Violation
title Gauge Mediation beyond Minimal Flavor Violation
title_full Gauge Mediation beyond Minimal Flavor Violation
title_fullStr Gauge Mediation beyond Minimal Flavor Violation
title_full_unstemmed Gauge Mediation beyond Minimal Flavor Violation
title_short Gauge Mediation beyond Minimal Flavor Violation
title_sort gauge mediation beyond minimal flavor violation
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP06(2013)052
http://cds.cern.ch/record/1538095
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AT paradisiparide gaugemediationbeyondminimalflavorviolation
AT zieglerrobert gaugemediationbeyondminimalflavorviolation