Flavor changing neutral Higgs bosons in a supersymmetric extension based on a Q{sub 6} family symmetry

Journal Article · Tue Apr 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.076010· OSTI ID:21249980

Kifune, Naoko; Kubo, Jisuke ^[1]; Lenz, Alexander ^[2]

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1. Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192 (Japan)
2. Universitaet Regensburg, D-93051 Regensburg (Germany)

A supersymmetric extension of the standard model based on the discrete Q{sub 6} family symmetry is considered, and we investigate flavor changing neutral current (FCNC) processes, especially those mediated by heavy flavor changing neutral Higgs bosons. Because of the family symmetry the number of the independent Yukawa couplings is smaller than that of the observed quantities such as the Cabibbo-Kobayashi-Maskawa matrix and the quark masses, so that the FCNCs can be parametrized only by the mixing angles and masses of the Higgs fields. We focus our attention on the mass differences of the neutral K, D, and B mesons. All the constraints including that from the ratio {delta}M{sub B{sub s}}/{delta}M{sub B{sub d}} can be satisfied, if the heavy Higgs bosons are heavier than {approx}1.5 TeV. If the constraint from {delta}M{sub K} is slightly relaxed, the heavy Higgs bosons can be as light as {approx}0.4 TeV, which is within the accessible range of LHC.

• OSTI ID: 21249980
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
CERN LHC
COUPLING
D MESONS
FLAVOR MODEL
HIGGS BOSONS
KOBAYASHI-MASKAWA MATRIX
MASS
MASS DIFFERENCE
NEUTRAL CURRENTS
QUARKS
STANDARD MODEL
SUPERSYMMETRY
TEV RANGE 01-10
WEINBERG ANGLE