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...

Descripción completa

Detalles Bibliográficos
Autores principales: Blankenburg, Gianluca, Jones-Perez, Joel
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