FCNCs in left-right symmetric theories and constraints on the right-handed scale

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.56.259· OSTI ID:549290

Pospelov, M E ^[1]

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1. Departement de Physique, Universite du Quebec a Montreal, Case Postale 8888, Succursale Centre-Ville, Montreal, Quebec, H3C 3P8 (CANADA)

We revise the limits on the FCNC Higgs bosons in manifestly left-right symmetric theories. It is shown that the combination of Kobayashi-Maskawa CP violation with tree-level {Delta}S=2 Higgs boson exchange gives a very large contribution to the CP-violating {epsilon} parameter. It leads to a new strong constraint on the FCNC Higgs boson mass, M{gt}50{endash}100 TeV, enhanced by a factor of the order of {radical}(m{sub t}/m{sub c}). Being addressed to the supersymmetric left-right models, the FCNC problem requires that both the right-handed scale and supersymmetric mass parameters be heavier than 50 TeV for tan{beta}{approximately}1. The most relaxed case corresponds to tan{beta}{approximately}20{endash}30 where the right-handed scale can be of the order of a few TeV. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 549290
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CP INVARIANCE
FLAVOR MODEL
HIGGS BOSONS
KOBAYASHI-MASKAWA MATRIX
LIMITING VALUES
MASS
NEUTRAL CURRENTS
STANDARD MODEL
SU-2 GROUPS
UNIFIED GAUGE MODELS