2-9 July 2014
Valencia, Spain
Europe/Madrid timezone

Sommerfeld enhancements and relic abundance of neutralino dark matter in the general MSSM

3 Jul 2014, 16:36
18m
Auditorium 3A ()

Auditorium 3A

Oral presentation Astroparticle Physics and Cosmology Astroparticle Physics and Cosmology

Speaker

Dr. Pedro Ruiz-Femenia (IFIC, Valencia)

Description

We discuss the calculation of Sommerfeld enhancements on the neutralino LSP relic abundance calculation for heavy neutralino dark matter including co-annihilations of nearly mass-degenerate neutralino and chargino states. A newly developed EFT framework enables us to consider for the first time all (off)-diagonal potential and annihilation matrices including P- and next-to-next-to-leading order S-wave effects for a generic MSSM parameter space point, and to treat effects from heavy states perturbatively. To investigate the impact of the enhanced cross sections on the predicted neutralino relic abundance we identify interesting regions of parameter space. We discuss the different features of these regions, focusing in particular on heavy wino- and higgsino-like dark matter and models interpolating between the two scenarios.

Primary authors

Mrs. Charlotte Hellman (TU Munich) Prof. Martin Beneke (TU Munich & RWTH Aachen) Dr. Pedro Ruiz-Femenia (IFIC, Valencia)

Presentation Materials

Paper

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