Anomalous dimensions of potential top-partners

Franzosi, Diogo Buarque; Ferretti, Gabriele

doi:10.21468/scipostphys.7.3.027

Cited by 38 publications

(26 citation statements)

References 58 publications

(124 reference statements)

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“…These would slow the running of the gauge coupling; moreover, a large anomalous dimension might appear near the conformal window. One could also look at other models entirely, among those listed by Franzosi and Ferretti [15]. Another theory that is under current study [16,17,18] is an Sp(4) gauge theory with a global SU(4) symmetry that breaks to Sp (4).…”

Section: Mixing: Discussionmentioning

confidence: 99%

Towards a composite Higgs and a partially composite top quark

Svetitsky¹,

Ayyar²,

DeGrand³

et al. 2020

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019)

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We have calculated quantities of interest to a theory of compositeness. The lattice model, approximating the candidate theory, is the SU(4) gauge theory coupled to fermions in two color representations. For the composite Higgs, a current correlator gives one of the ingredients of the effective Higgs potential. For the partially composite top quark, we have hyperbaryon matrix elements that govern mixing of the fundamental quark with its heavy composite partner. The matrix elements turn out to be so small that the theory is disfavored as a source of a realistic top mass.

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Section: Mixing: Discussionmentioning

confidence: 99%

Towards a composite Higgs and a partially composite top quark

Svetitsky¹,

Ayyar²,

DeGrand³

et al. 2020

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019)

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“…One long-standing problem is the possibility of generating sufficiently large composite fermion anomalous dimensions required to yield the correct top mass and to be larger than the fermion bilinear itself. This is not possible to achieve within calculable IRFP theories [12] JHEP07(2020)166 although without rigour one can still hope to achieve these large anomalous dimensions [13].…”

Section: Jhep07(2020)166mentioning

confidence: 99%

Real and complex fundamental partial compositeness

Agugliaro

Sannino

2020

J. High Energ. Phys.

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We complete the analysis of the effective field theory at the electroweak scale for minimal models of fundamental partial compositeness. Specifically, we consider fermions in the complex and real representation of the gauge group underlying the composite Higgs dynamics, since the pseudo real representation was investigated earlier. The minimal models feature the cosets SU(4)×SU(4)/SU(4) D and SU(5)/SO(5) respectively for the complex and real representations. We determine the vacuum alignment, the electroweak precision constraints as well as additional collider constraints. We finally discuss the main differences among the different models of minimal partial compositeness.

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“…It is not unreasonable to expect a top partner of anomalous dimension close to −2. (Some estimates using perturbation theory are given in [38]. See [39] for the QCD-like case for which the anomalous dimensions tend to be smaller.)…”

Section: Partial Compositenessmentioning

confidence: 99%