Higgsless fermion masses and unitarity

Abstract

We discuss the consistency of fermion mass generation by boundary conditions and brane localized terms in higher dimensional Higgsless models of gauge symmetry breaking. The sum rules imposed by tree-level unitarity and Ward Identities are applied to check the consistency of mass generation by orbifold projections and more general boundary conditions consistent with the variational principle. We find that the sum rules are satisfied for boundary conditions corresponding to brane localized mass and kinetic terms consistent with the reduced gauge symmetry on the brane.

arXiv comment20 pages, RevTeX; typos corrected, accepted for publication in Phys.Rev.D

References in corpus (39)

• Extra Spacetime Dimensions and Unification
• Grand Unification at Intermediate Mass Scales through Extra Dimensions
• Gauge Unification in Higher Dimensions
• Towards a Realistic Model of Higgsless Electroweak Symmetry Breaking
• SU(5) Grand Unification in Extra Dimensions and Proton Decay
• Limits on extra dimensions in orbifold compactifications of superstrings
• A Minimal S^1/(Z_2 x Z_2') Orbifold GUT
• Gauge Symmetry Reduction from the Extra Space $S^1/Z_2$
• Gauge Unification In Six Dimensions
• The Structure of GUT Breaking by Orbifolding
• The Power of Brane-Induced Gravity
• Weakly coupled Higgsless theories and precision electroweak tests
• Unitarity of Compactified Five Dimensional Yang-Mills Theory
• SO(10) Unified Theories in Six Dimensions
• Anomalies on Orbifolds
• SO(10) grand unification in five dimensions: Proton decay and the mu problem
• Bulk and brane radiative effects in gauge theories on orbifolds
• Higgsless Theory of Electroweak Symmetry Breaking from Warped Space
• Unitarity of the Higher Dimensional Standard Model
• Bulk fields with general brane kinetic terms
• Chiral Compactification on a Square
• Chiral fermions, orbifolds, scalars and fat branes
• Higgsless Electroweak Symmetry Breaking from Theory Space
• Supersymmetry breaking in M-theory and gaugino condensation
• Seesaw Mechanism in Warped Geometry
• Dirac Neutrino Masses with Planck Scale Lepton Number Violation
• Wilson Lines and Symmetry Breaking on Orbifolds
• Generalized symmetry breaking on orbifolds
• Supersymmetry Breakdown at a Hidden Wall
• Brane-induced supersymmetry breaking
• On the M-theory description of gaugino condensation
• Unitarity in gauge symmetry breaking on orbifold
• Chiral fermions and gauge-fixing in five-dimensional theories
• Strong tree level unitarity violations in the extra dimensional Standard Model with scalars in the bulk
• The Equivalence Theorem for gauge boson scattering in a five dimensional Standard Model
• Supersymmetry Breakdown at Distant Branes: The Super-Higgs Mechanism
• Brane-assisted Scherk-Schwarz supersymmetry breaking in orbifolds
• Equivalent effective Lagrangians for Scherk-Schwarz compactifications
• Softness of Brane-localized Supersymmetry Breaking on Orbifolds

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• Unitarity constraints on top quark signatures of Higgsless models
• KK-parity non-conservation in UED confronts LHC data
• Collider phenomenology of Higgs bosons in Left-Right symmetric Randall-Sundrum models
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• Exploring non minimal Universal Extra Dimensional Model at the LHC
• Unitarity and Bounds on the Scale of Fermion Mass Generation
• Higgsless Electroweak Symmetry Breaking
• The impact of nonminimal Universal Extra Dimensional model on $\Delta B=2$ transitions
• Universal Extra-Dimensional models with boundary terms: Probing at the LHC
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