Composite two-Higgs doublet model from dilaton effective field theory

被引：18

作者：

Appelquist, Thomas ^{[1
]}

Ingoldby, James ^{[2
]}

Piai, Maurizio ^{[3
]}

机构：

[1] Yale Univ, Dept Phys, Sloane Lab, New Haven, CT 06520 USA

[2] Abdus Salam Int Ctr Theoret Phys, Str Costiera 11, I-34151 Trieste, Italy

[3] Swansea Univ, Fac Sci & Engn, Dept Phys, Singleton Pk, Swansea SA2 8PP, Wales

来源：

NUCLEAR PHYSICS B | 2022年 / 983卷

基金：

欧洲研究理事会;

关键词：

SYMMETRY-BREAKING; HIGGS;

D O I：

10.1016/j.nuclphysb.2022.115930

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We construct a composite two-Higgs-doublet model (2HDM) within the context of dilaton effective field theory. This EFT describes the particle spectrum observed in lattice simulations of a near-conformal SU (3) gauge field theory. A second Higgs doublet is naturally accommodated within the EFT, used previously to construct a one-Higgs-doublet model. We explore the interplay of phenomenological and EFT requirements, supplemented by information from numerical lattice studies of the SU (3) gauge theory with eight fundamental (Dirac) fermions. We build a viable model with moderate parameter tuning. In the relevant portion of parameter space, we match the model to a conventional general description of 2HDMs, and comment on the role of custodial symmetry (breaking) in the scalar potential. Contributions to the precision electroweak parameter T provide a possible explanation for the recent measurement of the W-boson mass by CDF II. (C) 2022 The Author(s). Published by Elsevier B.V.

引用

页数：15

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