3-8 July 2016
The University of Melbourne
Australia/Melbourne timezone

Theoretical uncertainty of the supersymmetric dark matter relic density

4 Jul 2016, 15:20
20m
Carillo Gantner Theatre ()

Carillo Gantner Theatre

Carrillo Gantner Theatre, Sidney Myer Asia Centre The University of Melbourne VIC 3010 Australia
Talk Dark Matter and Particle Astrophysics Dark Matter and Particle Astrophysics

Speaker

Julia Harz (Institut Lagrange de Paris)

Description

To gain for a more precise prediction of the supersymmetric dark matter relic density, we have calculated next-to-leading order SUSY-QCD corrections to neutralino (co)annihilation processes including Coulomb enhancement effects. We demonstrate that these corrections can have significant impact and are thus of general interest for parameter studies. For particle physics observables at colliders, it is common practice to estimate the theoretical uncertainty by studying the variations of the predicted cross sections with a priori unpredictable scales. In astroparticle physics, this has so far not been possible, since most of the observables were calculated at Born level only, so that the renormalization scheme and scale dependence could not be studied in a meaningful way. Thus, we present the fi rat quantitative study of the theoretical uncertainty of the neutralino dark matter relic density from scheme and scale variations.

Primary author

Julia Harz (Institut Lagrange de Paris)

Presentation Materials