Cover Image

Probing Yukawa unification with K and B mixing

Show other versions (1)

We consider corrections to the unification of down-quark and charged-lepton Yukawa couplings in supersymmetric GUTs, which links the large ν τ −ν μ mixing angle to b → s transitions. These corrections generically occur in simple grand-unified models with small Higgs representations and affect s → d...

Full description

Saved in:
Bibliographic Details
Main Authors: Trine, Stéphanie (Author) , Westhoff, Susanne (Author) , Wiesenfeldt, Sören (Author)
Format: Article (Journal)
Language:English
Published: 4 August 2009
In: Journal of high energy physics
Year: 2009, Issue: 08
ISSN:1029-8479
DOI:10.1088/1126-6708/2009/08/002
Online Access:Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1088/1126-6708/2009/08/002
Verlag, kostenfrei, Volltext: http://stacks.iop.org/1126-6708/2009/i=08/a=002
Get full text
Author Notes:Stéphanie Trine, Susanne Westhoff, and Sören Wiesenfeldt
Description
Summary:We consider corrections to the unification of down-quark and charged-lepton Yukawa couplings in supersymmetric GUTs, which links the large ν τ −ν μ mixing angle to b → s transitions. These corrections generically occur in simple grand-unified models with small Higgs representations and affect s → d and b → d transitions via the mixing of the corresponding right-handed superpartners. On the basis of a specific SUSY-SO(10) model, we analyze the constraints from K − ##IMG## [http://ej.iop.org/icons/Entities/barK.gif] bar K and B d − ##IMG## [http://ej.iop.org/icons/Entities/barB.gif] bar B d mixing on the additional ##IMG## [http://ej.iop.org/icons/Entities/tilded.gif] tilde d R − ##IMG## [http://ej.iop.org/icons/Entities/tildes.gif] tilde s R rotation angle θ. We find that ##IMG## [http://ej.iop.org/icons/Entities/epsilon.gif] epsilon K already sets a stringent bound on θ, θ max ##IMG## [http://ej.iop.org/icons/Entities/calO.gif] Script O (1°), indicating a very specific flavor structure of the correction operators. The impact of the large neutrino mixings on the unitarity triangle analysis is also briefly discussed, as well as their ability to account for the sizeable CP-violating phase observed recently in B s → J /ψ ##IMG## [http://ej.iop.org/icons/Entities/phi.gif] phi decays.
Item Description:Gesehen am 26.09.2017
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1088/1126-6708/2009/08/002

Similar Items