Derivation of gauge invariance from high-energy unitarity bounds on the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>S</mml:mi></mml:math>matrix

Cornwall, John M.; Levin, David; Tiktopoulos, George

doi:10.1103/physrevd.10.1145

Cited by 868 publications

(735 citation statements)

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“…In particular, in the heavy flavon limit (m ϕ m h , m Z ) with small s 2 H , we have Γ (ϕ → hh) = Γ ϕ → Z 0 Z 0 which is a natural expectation of the equivalence theorem [45].…”

Section: Flavon Phenomenology At the Lhcmentioning

confidence: 99%

Higgs-flavon mixing and LHC phenomenology in a simplified model of broken flavor symmetry

et al. 2014

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The LHC phenomenology of a low-scale gauged flavor symmetry model with inverted hierarchy is studied, through introduction of a simplified model of broken flavor symmetry. A new scalar (a flavon) and a new neutral top-philic massive gauge boson emerge with mass in the TeV range along with a new heavy fermion associated with the standard model top quark. After checking constraints from electroweak precision observables, we investigate the influence of the model on Higgs boson physics, notably on its production cross section and decay branching fractions. Limits on the flavon ϕ from heavy Higgs boson searches at the LHC at 7 and 8 TeV are presented. The branching fractions of the flavon are computed as a function of the flavon mass and the Higgs-flavon mixing angle. We also explore possible discovery of the flavon at 14 TeV, particularly via the ϕ → Z 0 Z 0 decay channel in the 2 2 final state, and through standard model Higgs boson pair production ϕ → hh in the bbγγ final state. We conclude that the flavon mass range up to 500 GeV could probed down to quite small values of the Higgs-flavon mixing angle with 100 fb −1 of integrated luminosity at 14 TeV.

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“…In particular, in the heavy flavon limit (m ϕ m h , m Z ) with small s 2 H , we have Γ (ϕ → hh) = Γ ϕ → Z 0 Z 0 which is a natural expectation of the equivalence theorem [45].…”

Section: Flavon Phenomenology At the Lhcmentioning

confidence: 99%

Higgs-flavon mixing and LHC phenomenology in a simplified model of broken flavor symmetry

et al. 2014

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“…When u •-* * charged current couplings are included in the elective tree lagrangisn (1.2), one would grossly overestimate oneloop strangeness changing neutral current transitions with tbe identification A ~ m w . Thi* m because there is a much lower threshold, A ~ m e (c=charm) where these tran sitions are damped by the QIM mechanism 5 . Comparison of calculations of this type with data provided an estimate* of the charmed quark mass before the underlying theory* was known.…”

Section: )mentioning

confidence: 99%

Effective Nonrenormalizable Theories at One Loop

Gaillard

1988

Particle Physics

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“…This intuition is made precise by the Goldstone Boson Equivalence Theorem (GBET) of Cornwall, Levin, Tiktopoulos, and Vayonakis [18,19]. The theorem states that the amplitude for producing the helicity 0 state of a massive gauge boson, considered in the limit of large momentum, becomes equal to the amplitude for producing the original Goldstone boson.…”

Section: Goldstone Boson Equivalencementioning

confidence: 99%