17-22 July 2016
Master Cutlers Hall
Europe/London timezone

Neutralino dark matter at TeV scale revisited

20 Jul 2016, 14:00
20m
Venue: Cutlers' Drawing Room (First Floor); Chair: Malcolm Fairbairn; Session Manager: Anthony Ezeribe ()

Venue: Cutlers' Drawing Room (First Floor); Chair: Malcolm Fairbairn; Session Manager: Anthony Ezeribe

Speaker

Dr. Andrzej Hryczuk (University of Oslo)

Description

In this talk we will discuss the relic density and indirect signals from CRs and diffuse gamma rays of TeV-scale neutralino dark matter in the pMSSM. A recently developed framework enables us to calculate the Sommerfeld-enhanced relic density in general MSSM scenarios, properly treating mixed states and multiple co-annihilating channels as well as including off-diagonal contributions. We will present the results of a thorough investigation of certain regions of parameter space, focussing in particular on departures from the well known pure wino scenario: namely the effect of sfermion masses being non-decoupled and of allowing non-negligible higgsino or bino components in the lightest neutralino. The results reveal a number of phenomenologically interesting but up to now unexplored regions of parameter space. Near the regime where the Sommerfeld enhancement is resonant the combined effect of non-decoupled sfermions and non-negligible mixing allows the close-to-wino neutralino to satisfy the diffuse gamma-ray constraints, simultaneously having correct thermal relic density and improving the fits to the AMS-02 antiproton data.

Primary author

Dr. Andrzej Hryczuk (University of Oslo)

Co-authors

Dr. Aoife Bharucha (CNRS, Marseille) Mr. Francesco Dighera (TU Munich) Prof. Martin Beneke (TU Munich) Dr. Pedro Ruiz-Femenia (TU Munich) Dr. Stefan Recksiegel (TU Munich)

Presentation Materials

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