Maximal sfermion flavour violation in super-GUTs

John Ellis; Keith A. Olive; L. Velasco-Sevilla

doi:10.1140/epjc/s10052-016-4398-9

Maximal sfermion flavour violation in super-GUTs

John Ellis, Keith A. Olive, L. Velasco-Sevilla

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We consider supersymmetric grand unified theories with soft supersymmetry-breaking scalar masses m₀ specified above the GUT scale (super-GUTs) and patterns of Yukawa couplings motivated by upper limits on flavour-changing interactions beyond the Standard Model. If the scalar masses are smaller than the gaugino masses m_{1 / 2}, as is expected in no-scale models, the dominant effects of renormalisation between the input scale and the GUT scale are generally expected to be those due to the gauge couplings, which are proportional to m_{1 / 2} and generation independent. In this case, the input scalar masses m₀ may violate flavour maximally, a scenario we call MaxSFV, and there is no supersymmetric flavour problem. We illustrate this possibility within various specific super-GUT scenarios that are deformations of no-scale gravity.

Original language	English (US)
Article number	562
Journal	European Physical Journal C
Volume	76
Issue number	10
DOIs	https://doi.org/10.1140/epjc/s10052-016-4398-9
State	Published - Oct 1 2016

Bibliographical note

Funding Information:
The work of JE was supported in part by the London Centre for Terauniverse Studies (LCTS), using funding from the European Research Council via the Advanced Investigator Grant 26732, and in part by the STFC Grant ST/L000326/1. The work of K.A.O. was supported in part by DOE grant DE-SC0011842 at the University of Minnesota. We thank J. Rosiek for help with SUSY_FLAVOR.

Publisher Copyright:
© 2016, The Author(s).

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title = "Maximal sfermion flavour violation in super-GUTs",

abstract = "We consider supersymmetric grand unified theories with soft supersymmetry-breaking scalar masses m0 specified above the GUT scale (super-GUTs) and patterns of Yukawa couplings motivated by upper limits on flavour-changing interactions beyond the Standard Model. If the scalar masses are smaller than the gaugino masses m1 / 2, as is expected in no-scale models, the dominant effects of renormalisation between the input scale and the GUT scale are generally expected to be those due to the gauge couplings, which are proportional to m1 / 2 and generation independent. In this case, the input scalar masses m0 may violate flavour maximally, a scenario we call MaxSFV, and there is no supersymmetric flavour problem. We illustrate this possibility within various specific super-GUT scenarios that are deformations of no-scale gravity.",

author = "John Ellis and Olive, {Keith A.} and L. Velasco-Sevilla",

note = "Funding Information: The work of JE was supported in part by the London Centre for Terauniverse Studies (LCTS), using funding from the European Research Council via the Advanced Investigator Grant 26732, and in part by the STFC Grant ST/L000326/1. The work of K.A.O. was supported in part by DOE grant DE-SC0011842 at the University of Minnesota. We thank J. Rosiek for help with SUSY_FLAVOR. Publisher Copyright: {\textcopyright} 2016, The Author(s).",

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AU - Olive, Keith A.

AU - Velasco-Sevilla, L.

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N2 - We consider supersymmetric grand unified theories with soft supersymmetry-breaking scalar masses m0 specified above the GUT scale (super-GUTs) and patterns of Yukawa couplings motivated by upper limits on flavour-changing interactions beyond the Standard Model. If the scalar masses are smaller than the gaugino masses m1 / 2, as is expected in no-scale models, the dominant effects of renormalisation between the input scale and the GUT scale are generally expected to be those due to the gauge couplings, which are proportional to m1 / 2 and generation independent. In this case, the input scalar masses m0 may violate flavour maximally, a scenario we call MaxSFV, and there is no supersymmetric flavour problem. We illustrate this possibility within various specific super-GUT scenarios that are deformations of no-scale gravity.

AB - We consider supersymmetric grand unified theories with soft supersymmetry-breaking scalar masses m0 specified above the GUT scale (super-GUTs) and patterns of Yukawa couplings motivated by upper limits on flavour-changing interactions beyond the Standard Model. If the scalar masses are smaller than the gaugino masses m1 / 2, as is expected in no-scale models, the dominant effects of renormalisation between the input scale and the GUT scale are generally expected to be those due to the gauge couplings, which are proportional to m1 / 2 and generation independent. In this case, the input scalar masses m0 may violate flavour maximally, a scenario we call MaxSFV, and there is no supersymmetric flavour problem. We illustrate this possibility within various specific super-GUT scenarios that are deformations of no-scale gravity.

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Maximal sfermion flavour violation in super-GUTs

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