The axion and the Goldstone Higgs

I Brivio; M. B. Gavela; S. Pascoli; R. del Rey; S. Saa

doi:10.1016/j.cjph.2019.06.018

The axion and the Goldstone Higgs

I Brivio, M. B. Gavela, S. Pascoli, R. del Rey, S. Saa

Niels Bohr Internationale Akademi

Abstract

We consider the renormalizable SO(5)/SO(4) σ-model, in which the Higgs particle has a pseudo-Nambu-Goldstone boson character, and explore what the minimal field extension required to implement the Peccei-Quinn symmetry is, within the partial compositeness scenario. It turns out that the minimal model does not require the enlargement of the exotic fermionic sector. The addition of a singlet scalar suffices. We explore the implementation of the symmetry and the phenomenological predictions for photonic signals in axion searches for all models discussed. Because of the constraints imposed by partial compositeness on the exotic fermion sector in order to obtain the Standard Model fermion masses, the expected range of allowed axion-photon couplings turns out to be generically narrowed with respect to that of standard invisible axion models, impacting the experimental quest.

Originalsprog	Engelsk
Tidsskrift	Chinese Journal of Physics
Vol/bind	61
Sider (fra-til)	55-71
ISSN	0577-9073
DOI	https://doi.org/10.1016/j.cjph.2019.06.018
Status	Udgivet - okt. 2019

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10.1016/j.cjph.2019.06.018

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title = "The axion and the Goldstone Higgs",

abstract = "We consider the renormalizable SO(5)/SO(4) σ-model, in which the Higgs particle has a pseudo-Nambu-Goldstone boson character, and explore what the minimal field extension required to implement the Peccei-Quinn symmetry is, within the partial compositeness scenario. It turns out that the minimal model does not require the enlargement of the exotic fermionic sector. The addition of a singlet scalar suffices. We explore the implementation of the symmetry and the phenomenological predictions for photonic signals in axion searches for all models discussed. Because of the constraints imposed by partial compositeness on the exotic fermion sector in order to obtain the Standard Model fermion masses, the expected range of allowed axion-photon couplings turns out to be generically narrowed with respect to that of standard invisible axion models, impacting the experimental quest.",

author = "I Brivio and Gavela, {M. B.} and S. Pascoli and {del Rey}, R. and S. Saa",

year = "2019",

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T1 - The axion and the Goldstone Higgs

AU - Brivio, I

AU - Gavela, M. B.

AU - Pascoli, S.

AU - del Rey, R.

AU - Saa, S.

PY - 2019/10

Y1 - 2019/10

N2 - We consider the renormalizable SO(5)/SO(4) σ-model, in which the Higgs particle has a pseudo-Nambu-Goldstone boson character, and explore what the minimal field extension required to implement the Peccei-Quinn symmetry is, within the partial compositeness scenario. It turns out that the minimal model does not require the enlargement of the exotic fermionic sector. The addition of a singlet scalar suffices. We explore the implementation of the symmetry and the phenomenological predictions for photonic signals in axion searches for all models discussed. Because of the constraints imposed by partial compositeness on the exotic fermion sector in order to obtain the Standard Model fermion masses, the expected range of allowed axion-photon couplings turns out to be generically narrowed with respect to that of standard invisible axion models, impacting the experimental quest.

AB - We consider the renormalizable SO(5)/SO(4) σ-model, in which the Higgs particle has a pseudo-Nambu-Goldstone boson character, and explore what the minimal field extension required to implement the Peccei-Quinn symmetry is, within the partial compositeness scenario. It turns out that the minimal model does not require the enlargement of the exotic fermionic sector. The addition of a singlet scalar suffices. We explore the implementation of the symmetry and the phenomenological predictions for photonic signals in axion searches for all models discussed. Because of the constraints imposed by partial compositeness on the exotic fermion sector in order to obtain the Standard Model fermion masses, the expected range of allowed axion-photon couplings turns out to be generically narrowed with respect to that of standard invisible axion models, impacting the experimental quest.

U2 - 10.1016/j.cjph.2019.06.018

DO - 10.1016/j.cjph.2019.06.018

M3 - Journal article

SN - 0577-9073

VL - 61

SP - 55

EP - 71

JO - Chinese Journal of Physics

JF - Chinese Journal of Physics

ER -

The axion and the Goldstone Higgs

Abstract

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