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A concrete composite 2-Higgs doublet model

A concrete composite 2-Higgs doublet model
A concrete composite 2-Higgs doublet model

We consider a Composite Higgs Model (CHM) with two isospin doublet Higgs fields arising as pseudo Nambu-Goldstone bosons from a SO(6) → SO(4) × SO(2) breaking. The main focus of this work is to explicitly compute the properties of these Higgses in terms of the fundamental parameters of the composite sector such as masses, Yukawa and gauge couplings of the new spin-1 and spin-1/2 resonances. Concretely, we calculate the Higgs potential at one-loop level through the Coleman-Weinberg mechanism from the explicit breaking of the SO(6) global symmetry by the partial compositeness of fermions and gauge bosons. We derive then the phenomenological properties of the Higgs states and highlight the main signatures of this Composite 2-Higgs Doublet Model at the Large Hadron Collider, including modifications to the SM-like Higgs couplings as well as production and decay channels of heavier Higgs bosons. We also consider flavour bounds that are typical of CHMs with more than one Higgs doublet.

Beyond Standard Model, Higgs Physics, Technicolor and Composite Models
1126-6708
De Curtis, Stefania
7bf1f7cf-535f-4551-8d05-806c57cfa2d1
Rose, Luigi Delle
19c81ce1-e14b-4e4c-b72d-0d74cbb331db
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Yagyu, Kei
ecd84785-710b-4526-8b41-55ae605e633c
De Curtis, Stefania
7bf1f7cf-535f-4551-8d05-806c57cfa2d1
Rose, Luigi Delle
19c81ce1-e14b-4e4c-b72d-0d74cbb331db
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Yagyu, Kei
ecd84785-710b-4526-8b41-55ae605e633c

De Curtis, Stefania, Rose, Luigi Delle, Moretti, Stefano and Yagyu, Kei (2018) A concrete composite 2-Higgs doublet model. Journal of High Energy Physics, 2018 (12), [51]. (doi:10.1007/JHEP12(2018)051).

Record type: Article

Abstract

We consider a Composite Higgs Model (CHM) with two isospin doublet Higgs fields arising as pseudo Nambu-Goldstone bosons from a SO(6) → SO(4) × SO(2) breaking. The main focus of this work is to explicitly compute the properties of these Higgses in terms of the fundamental parameters of the composite sector such as masses, Yukawa and gauge couplings of the new spin-1 and spin-1/2 resonances. Concretely, we calculate the Higgs potential at one-loop level through the Coleman-Weinberg mechanism from the explicit breaking of the SO(6) global symmetry by the partial compositeness of fermions and gauge bosons. We derive then the phenomenological properties of the Higgs states and highlight the main signatures of this Composite 2-Higgs Doublet Model at the Large Hadron Collider, including modifications to the SM-like Higgs couplings as well as production and decay channels of heavier Higgs bosons. We also consider flavour bounds that are typical of CHMs with more than one Higgs doublet.

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Accepted/In Press date: 1 December 2018
e-pub ahead of print date: 10 December 2018
Published date: December 2018
Keywords: Beyond Standard Model, Higgs Physics, Technicolor and Composite Models

Identifiers

Local EPrints ID: 427193
URI: http://eprints.soton.ac.uk/id/eprint/427193
ISSN: 1126-6708
PURE UUID: bfd26b6f-c186-4871-a33b-d8f8ae7808b8

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Date deposited: 07 Jan 2019 17:30
Last modified: 21 Nov 2021 14:56

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Contributors

Author: Stefania De Curtis
Author: Luigi Delle Rose
Author: Stefano Moretti
Author: Kei Yagyu

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