We propose a possible explanation for the recently observed anomalous 511 keV line with a new "millicharged" fermion. This new fermion is light [B(MeV)]. Nevertheless, it has never been observed by any collider experiments by virtue of its tiny electromagnetic charge ee. In particular, we constrain parameters of this millicharged particle if the 511 keV cosmic γ-ray emission from the galactic bulge is due to positron production from this new particle.
|Number of pages||3|
|Journal||AIP Conference Proceedings|
|Publication status||Published - 2008|
|Event||16th International Conference on Supersymmetry and the Unification of Fundamental Interactions, SUSY08 - Seoul, Korea, Republic of|
Duration: 2008 Jun 16 → 2008 Jun 21
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)