Indirect constraints to branon dark matter

TL;DR

This paper reviews current gamma-ray observational constraints on branon dark matter annihilation, highlighting the potential for future experiments like CTA to detect signals from heavier branons above 150 GeV.

Contribution

It provides a summary of existing gamma-ray constraints on branon dark matter and assesses the prospects for future detection with upcoming telescopes.

Findings

Current gamma-ray observations do not detect branon annihilation signals.

Fermi-LAT, EGRET, and MAGIC are below sensitivity for branon detection.

CTA could detect gamma rays from branons with masses above 150 GeV.

Abstract

If the present dark matter in the Universe annihilates into Standard Model particles, it must contribute to the gamma ray fluxes detected on the Earth. Here we briefly review the present constraints for the detection of gamma ray photons produced in the annihilation of branon dark matter. We show that observations of dwarf spheroidal galaxies and the galactic center by EGRET, Fermi-LAT or MAGIC are below the sensitivity limits for branon detection. However,future experiments such as CTA could be able to detect gamma-ray photons from annihilating branons of masses above 150 GeV.