Heavy Higgs boson from flavor and electroweak symmetry unification

Journal Article · Wed Dec 01 04:00:00 EST 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.115008· OSTI ID:20698161

Bazzocchi, F; Fabbrichesi, M ^[1]

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1. INFN, Sezione di Trieste and Scuola Internazionale Superiore di Studi Avanzati, via Beirut 4, I-34014 Trieste (Italy)

We present a unified picture of flavor and electroweak symmetry breaking based on a nonlinear sigma model spontaneously broken at the TeV scale. Flavor and Higgs bosons arise as pseudo-Goldstone modes. Explicit collective symmetry breaking yields stable vacuum expectation values and masses protected at one loop by the little-Higgs mechanism. The coupling to the fermions generates well-defined mass textures - according to a U(1) global flavor symmetry - that correctly reproduce the mass hierarchies and mixings of quarks and leptons. The model is more constrained than usual little-Higgs models because of bounds on weak and flavor physics. The main experimental signatures testable at the LHC are a rather large mass m{sub h{sup 0}}=317{+-}80 GeV for the (lightest) Higgs boson and a characteristic spectrum of new bosons and fermions at the TeV scale.

• OSTI ID: 20698161
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 70; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AXIOMATIC FIELD THEORY
CERN LHC
COUPLING
FLAVOR MODEL
GEV RANGE
GOLDSTONE BOSONS
HIGGS BOSONS
HIGGS MODEL
LEPTONS
NONLINEAR PROBLEMS
QUARKS
REST MASS
SIGMA MODEL
SYMMETRY BREAKING
TEV RANGE
UNITARY SYMMETRY
WEINBERG-SALAM GAUGE MODEL