Jul 16 – 22, 2009
Kraków, Poland
Europe/Warsaw timezone

Cosmic Ray Signatures from Decaying Gravitino Dark Matter.

Jul 16, 2009, 2:30 PM
15m
Middle Lecture Hall B (Kraków, Poland)

Middle Lecture Hall B

Kraków, Poland

The Auditorium Maximum of the Jagiellonian University 33 Krupnicza Street 31-123 Kraków
Astroparticle Physics I. Astroparticle Physics

Speaker

Mr Nils-Erik Bomark (University of Bergen)

Description

If R-Parity is broken, a Gravitino LSP can still act as Dark Matter due to the Planck scale suppression of the decay width. Within this framework, we study cosmic ray signatures of models with trilinear R- Parity Violating couplings. The signals are compared with cosmic ray measurements from PAMELA and Fermi/LAT. It is shown that leptonic operators (LLE) can successfully reproduce the electron/positron anomalies seen by PAMELA and Fermi. Moreover, the absence of any deviation from expected background in the PAMELA anti-proton data is shown to produce significant constraints on LQD and UDD couplings. Finally, we discuss the importance of upcoming photon data on resolving the source of these anomalies.

Primary authors

Dr Are Raklev (University of Cambridge) Prof. Magda Lola (University of Patras) Mr Nils-Erik Bomark (University of Bergen) Prof. Per Osland (University of Bergen)

Presentation materials