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Flavor hierarchies from dynamical scales
One main obstacle for any beyond the SM (BSM) scenario solving the hierarchy problem is its potentially large contributions to electric dipole moments. An elegant way to avoid this problem is to have the light SM fermions couple to the BSM sector only through bilinears, $\bar ff$. This possibility c...
Autores principales: | , |
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Lenguaje: | eng |
Publicado: |
2016
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1007/JHEP07(2016)097 http://cds.cern.ch/record/2141285 |
_version_ | 1780950111901188096 |
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author | Panico, Giuliano Pomarol, Alex |
author_facet | Panico, Giuliano Pomarol, Alex |
author_sort | Panico, Giuliano |
collection | CERN |
description | One main obstacle for any beyond the SM (BSM) scenario solving the hierarchy problem is its potentially large contributions to electric dipole moments. An elegant way to avoid this problem is to have the light SM fermions couple to the BSM sector only through bilinears, $\bar ff$. This possibility can be neatly implemented in composite Higgs models. We study the implications of dynamically generating the fermion Yukawa couplings at different scales, relating larger scales to lighter SM fermions. We show that all flavor and CP-violating constraints can be easily accommodated for a BSM scale of few TeV, without requiring any extra symmetry. Contributions to B physics are mainly mediated by the top, giving a predictive pattern of deviations in $\Delta F=2$ and $\Delta F=1$ flavor observables that could be seen in future experiments. |
id | cern-2141285 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2016 |
record_format | invenio |
spelling | cern-21412852022-08-10T12:44:12Zdoi:10.1007/JHEP07(2016)097http://cds.cern.ch/record/2141285engPanico, GiulianoPomarol, AlexFlavor hierarchies from dynamical scalesParticle Physics - PhenomenologyOne main obstacle for any beyond the SM (BSM) scenario solving the hierarchy problem is its potentially large contributions to electric dipole moments. An elegant way to avoid this problem is to have the light SM fermions couple to the BSM sector only through bilinears, $\bar ff$. This possibility can be neatly implemented in composite Higgs models. We study the implications of dynamically generating the fermion Yukawa couplings at different scales, relating larger scales to lighter SM fermions. We show that all flavor and CP-violating constraints can be easily accommodated for a BSM scale of few TeV, without requiring any extra symmetry. Contributions to B physics are mainly mediated by the top, giving a predictive pattern of deviations in $\Delta F=2$ and $\Delta F=1$ flavor observables that could be seen in future experiments.One main obstacle for any beyond the SM (BSM) scenario solving the hierarchy problem is its potentially large contributions to electric dipole moments. An elegant way to avoid this problem is to have the light SM fermions couple to the BSM sector only through bilinears, $ \overline{f}f $ . This possibility can be neatly implemented in composite Higgs models. We study the implications of dynamically generating the fermion Yukawa couplings at different scales, relating larger scales to lighter SM fermions. We show that all flavor and CP-violating constraints can be easily accommodated for a BSM scale of few TeV, without requiring any extra symmetry. Contributions to B physics are mainly mediated by the top, giving a predictive pattern of deviations in ΔF = 2 and ΔF = 1 flavor observables that could be seen in future experiments.One main obstacle for any beyond the SM (BSM) scenario solving the hierarchy problem is its potentially large contributions to electric dipole moments. An elegant way to avoid this problem is to have the light SM fermions couple to the BSM sector only through bilinears, $\bar ff$. This possibility can be neatly implemented in composite Higgs models. We study the implications of dynamically generating the fermion Yukawa couplings at different scales, relating larger scales to lighter SM fermions. We show that all flavor and CP-violating constraints can be easily accommodated for a BSM scale of few TeV, without requiring any extra symmetry. Contributions to B physics are mainly mediated by the top, giving a predictive pattern of deviations in $\Delta F=2$ and $\Delta F=1$ flavor observables that could be seen in future experiments.arXiv:1603.06609CERN-TH-2016-065CERN-TH-2016-065oai:cds.cern.ch:21412852016-03-21 |
spellingShingle | Particle Physics - Phenomenology Panico, Giuliano Pomarol, Alex Flavor hierarchies from dynamical scales |
title | Flavor hierarchies from dynamical scales |
title_full | Flavor hierarchies from dynamical scales |
title_fullStr | Flavor hierarchies from dynamical scales |
title_full_unstemmed | Flavor hierarchies from dynamical scales |
title_short | Flavor hierarchies from dynamical scales |
title_sort | flavor hierarchies from dynamical scales |
topic | Particle Physics - Phenomenology |
url | https://dx.doi.org/10.1007/JHEP07(2016)097 http://cds.cern.ch/record/2141285 |
work_keys_str_mv | AT panicogiuliano flavorhierarchiesfromdynamicalscales AT pomarolalex flavorhierarchiesfromdynamicalscales |