Composite Vector Mesons from QCD to the Little Higgs

Piai, Maurizio; Pierce, Aaron; Wacker, Jay G.

doi:10.2172/826937

Cited by 17 publications

(38 citation statements)

References 48 publications

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“…A cartoon representing the EFT description of their longdistance dynamics is depicted in figure 1, and represents a generalization of hidden local symmetry [41][42][43][44][45][46]. One extends the symmetry from SU(4) to SU(4) A × SU(4) B , with SU(4) A weakly gauged, with coupling g ρ .…”

Section: Composite States: Vectorsmentioning

confidence: 99%

Symmetry restoration at high-temperature in two-color and two-flavor lattice gauge theories

Lee

Lucini

Piai

2017

J. High Energ. Phys.

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We consider the SU(2) gauge theory with N f = 2 flavors of Dirac fundamental fermions. We study the high-temperature behavior of the spectra of mesons, discretizing the theory on anisotropic lattices, and measuring the two-point correlation functions in the temporal direction as well as screening masses in various channels. We identify the (pseudo-)critical temperature as the temperature at which the susceptibility associated with the Polyakov loop has a maximum. At high temperature both the spin-1 and spin-0 sectors of the light meson spectra exhibit enhanced symmetry properties, indicating the restoration of both the global SU(4) and the axial U(1) A symmetries of the model.

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Section: Composite States: Vectorsmentioning

confidence: 99%

Symmetry restoration at high-temperature in two-color and two-flavor lattice gauge theories

Lee

Lucini

Piai

2017

J. High Energ. Phys.

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“…Even if we took = L 0 /L 1 to be 1/2, the Higgs potential would still be finite, suggesting that the physics relevant for pseudo-Goldstone phenomenology is heavily localized near the IR brane. In fact, as shown in [51], the Higgs potential can be…”

Section: Future Directionsmentioning

confidence: 92%

The littlest Higgs in anti-de Sitter space

Thaler

Yavin

2005

J. High Energy Phys.

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Abstract:We implement the SU(5)/SO(5) littlest Higgs theory in a slice of 5D Antide Sitter space bounded by a UV brane and an IR brane. In this model, there is a bulk SU(5) gauge symmetry that is broken to SO(5) on the IR brane, and the Higgs boson is contained in the Goldstones from this breaking. All of the interactions on the IR brane preserve the global symmetries that protect the Higgs mass, but a radiative potential is generated through loops that stretch to the UV brane where there are explicit SU(5) violating boundary conditions. Like the original littlest Higgs, this model exhibits collective breaking in that two interactions must be turned on in order to generate a Higgs potential. In AdS space, however, collective breaking does not appear in coupling constants directly but rather in the choice of UV brane boundary conditions. We match this AdS construction to the known low energy structure of the littlest Higgs and comment on some of the tensions inherent in the AdS construction. We calculate the 5D Coleman-Weinberg effective potential for the Higgs and find that collective breaking is manifest. In a simplified model with only the SU(2) gauge structure and the top quark, the physical Higgs mass can be of order 200 GeV with no considerable fine tuning (25%). We sketch a more realistic model involving the entire gauge and fermion structure that also implements T -parity, and we comment on the tension between T -parity and flavor structure.

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“…Since there are no extra gauge bosons, there are no extra mixings that induce the S parameter. This theory might be embedded into a more complete moose diagram or an AdS construction [5,[25][26][27][28][29][30][31][32][33]. The masses of the new vector bosons are now independent from the masses of the top partners and can have masses greater than 3 TeV (required by the S parameter) without forcing the top partners to become heavy or pushing the limits of perturbativity.…”

Section: Jhep06(2010)041mentioning

confidence: 99%

Collective quartics from simple groups

Hook

Wacker

2010

J. High Energ. Phys.

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This article classifies Little Higgs models that have collective quartic couplings. There are two classes of collective quartics: Special Cosets and Special Quartics. After taking into account dangerous singlets, the smallest Special Coset models are SU(5)/SO(5) and SU(6)/Sp(6). The smallest Special Quartic model is SU(5)/SU(3) × SU(2) × U(1) and has not previously been considered as a candidate Little Higgs model.

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Composite Vector Mesons from QCD to the Little Higgs

Cited by 17 publications

References 48 publications

Symmetry restoration at high-temperature in two-color and two-flavor lattice gauge theories

Symmetry restoration at high-temperature in two-color and two-flavor lattice gauge theories

The littlest Higgs in anti-de Sitter space

Collective quartics from simple groups

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