# Gamma rays from the annihilation of singlet scalar dark matter

## Abstract

We consider an extension of the Standard Model by a singlet scalar that accounts for the dark matter of the Universe. Within this model we compute the expected gamma ray flux from the annihilation of dark matter particles in a consistent way. To do so, an updated analysis of the parameter space of the model is first presented. By enforcing the relic density constraint from the very beginning, the viable parameter space gets reduced to just two variables: the singlet mass and the higgs mass. Current direct detection constraints are then found to require a singlet mass larger than 50 GeV. Finally, we compute the gamma ray flux and annihilation cross section and show that a large fraction of the viable parameter space lies within the sensitivity of Fermi-GLAST.

- Authors:

- Departamento de Fisica Teorica C-XI and Instituto de Fisica Teorica UAM-CSIC, Universidad Autonoma de Madrid, Cantoblanco, E-28049 Madrid (Spain)

- Publication Date:

- OSTI Identifier:
- 22156924

- Resource Type:
- Journal Article

- Journal Name:
- Journal of Cosmology and Astroparticle Physics

- Additional Journal Information:
- Journal Volume: 2009; Journal Issue: 03; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANNIHILATION; CROSS SECTIONS; DIRECT CURRENT; GAMMA RADIATION; GEV RANGE; HIGGS BOSONS; LIMITING VALUES; MATHEMATICAL SPACE; NONLUMINOUS MATTER; RELICT RADIATION; SENSITIVITY; STANDARD MODEL; TELESCOPE COUNTERS; UNIVERSE

### Citation Formats

```
Yaguna, Carlos E., E-mail: carlos.yaguna@uam.es.
```*Gamma rays from the annihilation of singlet scalar dark matter*. United States: N. p., 2009.
Web. doi:10.1088/1475-7516/2009/03/003.

```
Yaguna, Carlos E., E-mail: carlos.yaguna@uam.es.
```*Gamma rays from the annihilation of singlet scalar dark matter*. United States. https://doi.org/10.1088/1475-7516/2009/03/003

```
Yaguna, Carlos E., E-mail: carlos.yaguna@uam.es. Sun .
"Gamma rays from the annihilation of singlet scalar dark matter". United States. https://doi.org/10.1088/1475-7516/2009/03/003.
```

```
@article{osti_22156924,
```

title = {Gamma rays from the annihilation of singlet scalar dark matter},

author = {Yaguna, Carlos E., E-mail: carlos.yaguna@uam.es},

abstractNote = {We consider an extension of the Standard Model by a singlet scalar that accounts for the dark matter of the Universe. Within this model we compute the expected gamma ray flux from the annihilation of dark matter particles in a consistent way. To do so, an updated analysis of the parameter space of the model is first presented. By enforcing the relic density constraint from the very beginning, the viable parameter space gets reduced to just two variables: the singlet mass and the higgs mass. Current direct detection constraints are then found to require a singlet mass larger than 50 GeV. Finally, we compute the gamma ray flux and annihilation cross section and show that a large fraction of the viable parameter space lies within the sensitivity of Fermi-GLAST.},

doi = {10.1088/1475-7516/2009/03/003},

url = {https://www.osti.gov/biblio/22156924},
journal = {Journal of Cosmology and Astroparticle Physics},

issn = {1475-7516},

number = 03,

volume = 2009,

place = {United States},

year = {2009},

month = {3}

}