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Mass-matrix ansatz and flavor nonconservation in models with multiple Higgs doublets

Journal Article · · Phys. Rev. D; (United States)
;
Motivated by the existence of three fermion generations, we consider models with three Higgs doublets (for each hypercharge). It is shown that, if the basic Yukawa coupling matrices are of the Fritzsch form or some generalizations thereof (two such examples are presented), then the neutral flavor-changing couplings have a hierarchical structure given by ..delta../sub i//sub j/ ..sqrt..m/sub i/m/sub j/ , where ..delta../sub i//sub j/ is a combination of mixing angles and the m/sub i/'s are the relevant fermion masses. These couplings give a lower bound of the order of ..delta../sub d//sub s/ times 1 TeV on the mass of the exchanged scalar from the neutral-kaon mass difference. If the Higgs-boson mass is not significantly greater than this limit, one expects DD-bar mixing comparable to the present experimental bound.
Research Organization:
Physics Department, University of Missouri, St. Louis, Missouri 63121
OSTI ID:
5921312
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 35:11; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

645202 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645203 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
COMPOSITE MODELS
EIGENSTATES
ELEMENTARY PARTICLES
FERMIONS
FLAVOR MODEL
HADRONS
HIGGS BOSONS
KAONS
KAONS NEUTRAL
MASS DIFFERENCE
MATHEMATICAL MODELS
MESONS
NUCLEAR POTENTIAL
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
POTENTIALS
PSEUDOSCALAR MESONS
QUARK MODEL
QUARKS
STANDARD MODEL
STRANGE MESONS
STRANGE PARTICLES
SUPERSYMMETRY
SYMMETRY
UNIFIED GAUGE MODELS
VACUUM STATES
YUKAWA POTENTIAL