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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...
Autores principales: | , , |
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Lenguaje: | eng |
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2013
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1007/JHEP06(2013)052 http://cds.cern.ch/record/1538095 |
_version_ | 1780929715537707008 |
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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. |
id | cern-1538095 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2013 |
record_format | invenio |
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 |
work_keys_str_mv | AT calibbilorenzo gaugemediationbeyondminimalflavorviolation AT paradisiparide gaugemediationbeyondminimalflavorviolation AT zieglerrobert gaugemediationbeyondminimalflavorviolation |