Cargando…
RGE Behaviour of SUSY with a U(2)^3 symmetry
The first LHC results seem to disfavor any constrained MSSM realization, with universal conditions at the SUSY-breaking scale. A more motivated scenario is given by split-family SUSY, in which the first two generations of squarks are heavy, compatible with a U(2)^3 flavour symmetry. We consider this...
Autores principales: | , |
---|---|
Lenguaje: | eng |
Publicado: |
2012
|
Materias: | |
Acceso en línea: | https://dx.doi.org/10.1140/epjc/s10052-013-2289-x http://cds.cern.ch/record/1485860 |
_version_ | 1780926095266152448 |
---|---|
author | Blankenburg, Gianluca Jones-Perez, Joel |
author_facet | Blankenburg, Gianluca Jones-Perez, Joel |
author_sort | Blankenburg, Gianluca |
collection | CERN |
description | The first LHC results seem to disfavor any constrained MSSM realization, with universal conditions at the SUSY-breaking scale. A more motivated scenario is given by split-family SUSY, in which the first two generations of squarks are heavy, compatible with a U(2)^3 flavour symmetry. We consider this flavour symmetry to be broken at a very high scale and study the consequences at low energies through its RGE evolution. Initial conditions compatible with a split scenario are found, and the preservation of correlations from minimal U(2)^3 breaking are checked. The various chiral operators in $\Delta F=2$ processes are analyzed, and we show that, due to LHC gluino bounds, the (LL)(RR) operators can not always be neglected. Finally, we also study a possible extension of the U(2)^3 model compatible with the lepton sector. |
id | cern-1485860 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2012 |
record_format | invenio |
spelling | cern-14858602021-05-03T20:13:10Zdoi:10.1140/epjc/s10052-013-2289-xhttp://cds.cern.ch/record/1485860engBlankenburg, GianlucaJones-Perez, JoelRGE Behaviour of SUSY with a U(2)^3 symmetryParticle Physics - PhenomenologyThe first LHC results seem to disfavor any constrained MSSM realization, with universal conditions at the SUSY-breaking scale. A more motivated scenario is given by split-family SUSY, in which the first two generations of squarks are heavy, compatible with a U(2)^3 flavour symmetry. We consider this flavour symmetry to be broken at a very high scale and study the consequences at low energies through its RGE evolution. Initial conditions compatible with a split scenario are found, and the preservation of correlations from minimal U(2)^3 breaking are checked. The various chiral operators in $\Delta F=2$ processes are analyzed, and we show that, due to LHC gluino bounds, the (LL)(RR) operators can not always be neglected. Finally, we also study a possible extension of the U(2)^3 model compatible with the lepton sector.The first LHC results seem to disfavor, from the point of view of naturalness, any constrained MSSM realization with universal conditions at the SUSY-breaking scale. A more motivated scenario is given by split-family SUSY, in which the first two generations of squarks are heavy, compatible with a U(2)(3) flavor symmetry. We consider this flavor symmetry to be broken at a very high scale and study the consequences at low energies through its RGE evolution. Initial conditions compatible with a split scenario are found, and the preservation of correlations from minimal U(2)(3) breaking are checked. The various chiral operators in ΔF=2 processes are analyzed, and we show that, due to LHC gluino bounds, the (LL)(RR) operators cannot always be neglected. Finally, we also study a possible extension of the U(2)(3) model compatible with the lepton sector.The first LHC results seem to disfavour, from the point of view of naturalness, any constrained MSSM realization with universal conditions at the SUSY-breaking scale. A more motivated scenario is given by split-family SUSY, in which the first two generations of squarks are heavy, compatible with a U(2)^3 flavour symmetry. We consider this flavour symmetry to be broken at a very high scale and study the consequences at low energies through its RGE evolution. Initial conditions compatible with a split scenario are found, and the preservation of correlations from minimal U(2)^3 breaking are checked. The various chiral operators in $\Delta F=2$ processes are analyzed, and we show that, due to LHC gluino bounds, the (LL)(RR) operators can not always be neglected. Finally, we also study a possible extension of the U(2)^3 model compatible with the lepton sector.arXiv:1210.4561oai:cds.cern.ch:14858602012-10-18 |
spellingShingle | Particle Physics - Phenomenology Blankenburg, Gianluca Jones-Perez, Joel RGE Behaviour of SUSY with a U(2)^3 symmetry |
title | RGE Behaviour of SUSY with a U(2)^3 symmetry |
title_full | RGE Behaviour of SUSY with a U(2)^3 symmetry |
title_fullStr | RGE Behaviour of SUSY with a U(2)^3 symmetry |
title_full_unstemmed | RGE Behaviour of SUSY with a U(2)^3 symmetry |
title_short | RGE Behaviour of SUSY with a U(2)^3 symmetry |
title_sort | rge behaviour of susy with a u(2)^3 symmetry |
topic | Particle Physics - Phenomenology |
url | https://dx.doi.org/10.1140/epjc/s10052-013-2289-x http://cds.cern.ch/record/1485860 |
work_keys_str_mv | AT blankenburggianluca rgebehaviourofsusywithau23symmetry AT jonesperezjoel rgebehaviourofsusywithau23symmetry |