Repurposing lattice QCD results for composite phenomenology

DeGrand, Thomas; Neil, Ethan T.

doi:10.1103/physrevd.101.034504

Cited by 25 publications

(27 citation statements)

References 144 publications

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“…This can be compared to the results of Ref. [167] with N c = 3 − 5. As can be seen, qualitative (but not quantitative) agreement is observed.…”

Section: Topological Susceptibility With Dynamical Quarksmentioning

confidence: 79%

“…The most recent result [166], includes a continuum limit extrapolation. In the present year, a "pilot study" with varying N c =3-5 [167] was also published.…”

Section: Topological Susceptibility With Dynamical Quarksmentioning

confidence: 99%

“…We refer to earlier reviews on the subject [7][8][9] for further results. Although our focus will be QCD, some of the computations reviewed might be interesting in the context of compositeness models of electroweak symmetry breaking [10,11] and dark matter models [12].…”

Section: Introductionmentioning

confidence: 99%

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The large $$N_{c}$$ limit of QCD on the lattice

Hernández

Romero-López

2021

Eur. Phys. J. A

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We review recent progress in the study of the large limit of gauge theories from lattice simulations. The focus is not only the planar limit but also the size of corrections for values of . Some concrete examples of the topics we include are tests of large- factorization, the topological susceptibility, the glueball, meson and baryon spectra, the chiral dependence of masses and decay constants, and weak matrix elements related to the rule in kaon decays.

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“…This can be compared to the results of Ref. [167] with N c = 3 − 5. As can be seen, qualitative (but not quantitative) agreement is observed.…”

Section: Topological Susceptibility With Dynamical Quarksmentioning

confidence: 79%

“…The most recent result [166], includes a continuum limit extrapolation. In the present year, a "pilot study" with varying N c =3-5 [167] was also published.…”

Section: Topological Susceptibility With Dynamical Quarksmentioning

confidence: 99%

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The large $$N_{c}$$ limit of QCD on the lattice

Hernández

Romero-López

2021

Eur. Phys. J. A

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“…Though much of the dynamics are determined by the Z 2 twin symmetry with the SM fields, we end up with new unconfined quarks, from the part of the field along the VEV direction, as well as new SU(2) c bound states. Insights into this bound state spectrum and dynamics of the phase transition can be found in, for example, [60][61][62][63][64][65][66][67][68][69][70][71], but a few qualitative items are worth mentioning. First, the lightest quark masses are a few MeV, which is just above the confinement scale so mesons, composed of a quark and an anti-quark, and baryons, composed of two quarks, can likely be simulated as nonrelativisitic bound states.…”

Section: Twin Gauge Dynamics and Confinementmentioning

confidence: 99%

Breaking mirror twin color

Batell

Verhaaren

2020

J. High Energ. Phys.

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We investigate simple extensions of the Mirror Twin Higgs model in which the twin color gauge symmetry and the discrete Z 2 mirror symmetry are spontaneously broken. This is accomplished in a minimal way by introducing a single new colored triplet, sextet, or octet scalar field and its twin along with a suitable scalar potential. This spontaneous Z 2 breaking allows for a phenomenologically viable alignment of the electroweak vacuum, and leads to dramatic differences between the visible and mirror sectors with regard to the residual gauge symmetries at low energies, color confinement scales, and particle spectra. In particular, several of our models feature a remnant SU(2) or SO(3) twin color gauge symmetry with a very low confinement scale in comparison to Λ QCD. Furthermore, couplings between the colored scalar and matter provide a new dynamical source of twin fermion masses, and due to the mirror symmetry, these lead to a variety of correlated visible sector effects that can be probed through precision measurements and collider searches.

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“…While this scale has its drawbacks[48] in the pure gauge limit there are not many physical scales to choose from.…”

mentioning

confidence: 99%

A minimal model for neutral naturalness and pseudo-Nambu-Goldstone dark matter

Ahmed

Najjari

Verhaaren

2020

J. High Energ. Phys.

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We outline a scenario where both the Higgs and a complex scalar dark matter candidate arise as the pseudo-Nambu-Goldstone bosons of breaking a global SO(7) symmetry to SO(6). The novelty of our construction is that the symmetry partners of the Standard Model top-quark are charged under a hidden color group and not the usual SU(3) c. Consequently, the scale of spontaneous symmetry breaking and the masses of the top partners can be significantly lower than those with colored top partners. Taking these scales to be lower at once makes the model more natural and also reduces the induced nonderivative coupling between the Higgs and the dark matter. Indeed, natural realizations of this construction describe simple thermal WIMP dark matter which is stable under a global U(1) D symmetry. We show how the Large Hadron Collider along with current and next generation dark matter experiments will explore the most natural manifestations of this framework.

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Repurposing lattice QCD results for composite phenomenology

Cited by 25 publications

References 144 publications

The large $$N_{c}$$ limit of QCD on the lattice

The large $$N_{c}$$ limit of QCD on the lattice

Breaking mirror twin color

A minimal model for neutral naturalness and pseudo-Nambu-Goldstone dark matter

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