# Heavy resonances and the electroweak effective theory

## Abstract

Taking into account the negative results of direct searches for beyond the Standard Model fields and the consequent mass gap between Standard Model and possible unknown states, the use of electroweak effective theories is justified. Whereas at low energies we consider a non-linear realization of the electroweak symmetry breaking with a singlet Higgs and a strongly-coupled ultraviolet completion, at higher energies the known particles are assumed to be coupled to heavy states: bosonic fields with $$J^P=0^\pm$$ and $$J^P=1^\pm$$ (in electroweak triplets or singlets and in QCD octets or singlets) and fermionic states with $$J=\frac{1}{2}$$ (in electroweak doublets and in QCD triplets or singlets). By integrating out these heavy resonances, the pattern of next-to-leading order low-energy constants among the light fields can be studied. A phenomenological study trying to estimate the scale of these resonances is also shown.

- Authors:

- Cardenal Herrera U.
- Fermilab
- Valencia U., IFIC
- Madrid U.

- Publication Date:

- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

- OSTI Identifier:
- 1495355

- Report Number(s):
- arXiv:1811.10233; IFIC/18-43; FTUV/18-1126; FERMILAB-CONF-18-652-T; VBSCAN-PUB-08-18

1705201

- DOE Contract Number:
- AC02-07CH11359

- Resource Type:
- Conference

- Resource Relation:
- Conference: 39th International Conference on High Energy Physics, Seoul, Korea, 07/04-07/11/2018

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

### Citation Formats

```
Rosell, Ignasi, Krause, Claudius, Pich, Antonio, Santos, Joaquín, and Sanz-Cillero, Juan José.
```*Heavy resonances and the electroweak effective theory*. United States: N. p., 2018.
Web.

```
Rosell, Ignasi, Krause, Claudius, Pich, Antonio, Santos, Joaquín, & Sanz-Cillero, Juan José.
```*Heavy resonances and the electroweak effective theory*. United States.

```
Rosell, Ignasi, Krause, Claudius, Pich, Antonio, Santos, Joaquín, and Sanz-Cillero, Juan José. Mon .
"Heavy resonances and the electroweak effective theory". United States. https://www.osti.gov/servlets/purl/1495355.
```

```
@article{osti_1495355,
```

title = {Heavy resonances and the electroweak effective theory},

author = {Rosell, Ignasi and Krause, Claudius and Pich, Antonio and Santos, Joaquín and Sanz-Cillero, Juan José},

abstractNote = {Taking into account the negative results of direct searches for beyond the Standard Model fields and the consequent mass gap between Standard Model and possible unknown states, the use of electroweak effective theories is justified. Whereas at low energies we consider a non-linear realization of the electroweak symmetry breaking with a singlet Higgs and a strongly-coupled ultraviolet completion, at higher energies the known particles are assumed to be coupled to heavy states: bosonic fields with $J^P=0^\pm$ and $J^P=1^\pm$ (in electroweak triplets or singlets and in QCD octets or singlets) and fermionic states with $J=\frac{1}{2}$ (in electroweak doublets and in QCD triplets or singlets). By integrating out these heavy resonances, the pattern of next-to-leading order low-energy constants among the light fields can be studied. A phenomenological study trying to estimate the scale of these resonances is also shown.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {2018},

month = {11}

}