Cosmic-Ray Positron from Superparticle Dark Matter and the PAMELA Anomaly

Understand

Motivated by the anomalous positron flux recently reported by the PAMELA collaboration, we study the cosmic-ray positron produced by the pair annihilation and the decay of superparticle dark matter.

• We calculate the cosmic-ray positron flux and discuss implications of the PAMELA data.
• We show that the positron excess observed by the PAMELA can be explained with some of the superparticle dark matter.