Minimal flavour violation with hierarchical squark masses

In a supersymmetric model with hierarchical squark masses we analyze a pattern of flavour symmetry breaking centered on the special role of the top Yukawa coupling and, by extension, of the full Yukawa couplings for the up-type quarks. For sufficiently heavy squarks of the first and second generatio...

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Published in:The journal of high energy physics 2010-12, Vol.2010 (12), Article 70
Main Authors: Barbieri, Riccardo, Bertuzzo, Enrico, Farina, Marco, Lodone, Paolo, Zhuridov, Dmitry
Format: Article
Language:English
Subjects:
Broken symmetry
Classical and Quantum Gravitation
Couplings
Elementary Particles
Flavor (particle physics)
High energy physics
Neutral currents
Pattern analysis
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
String Theory
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cited_by cdi_FETCH-LOGICAL-c240t-b08a6f53cc261c4804fb71dc689980f694f33ca0dca97089b0d4881e9929d75a3
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description In a supersymmetric model with hierarchical squark masses we analyze a pattern of flavour symmetry breaking centered on the special role of the top Yukawa coupling and, by extension, of the full Yukawa couplings for the up-type quarks. For sufficiently heavy squarks of the first and second generation this leads to effective Minimal Flavour Violation of the Flavour Changing Neutral Current amplitudes. For this to happen we determine the bounds on the masses of the heavy squarks with QCD corrections taken into account, properly including previously neglected effects. We believe that the view presented in this paper altogether strengthens the case for hierarchical sfermions.
doi_str_mv 10.1007/JHEP12(2010)070
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source Publicly Available Content Database; Springer Nature - SpringerLink Journals - Fully Open Access
subjects Broken symmetry
Classical and Quantum Gravitation
Couplings
Elementary Particles
Flavor (particle physics)
High energy physics
Neutral currents
Pattern analysis
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
String Theory
title Minimal flavour violation with hierarchical squark masses
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