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HK: Fachverband Physik der Hadronen und Kerne
HK 57: Astroparticle Physics 3
HK 57.1: Gruppenbericht
Donnerstag, 26. März 2015, 17:00–17:30, K/HS1
Nuclear currents for WIMP-nucleus scattering based on chiral effective field theory⋆ — •Philipp Klos1,2, Javier Menéndez1,2,3, and Achim Schwenk1,2 — 1Institut für Kernphysik, Technische Universität Darmstadt — 2ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH — 3The University of Tokyo
Interactions of nuclei with external probes are crucial for understanding various new physics processes. The nuclear currents involved can be described in the framework of chiral effective field theory, which provides a consistent treatment of both nuclear forces and currents based on the same chiral Lagrangian. We include the currents at the one-body level and the leading two-body currents, which we have derived for axial-vector currents at finite momentum transfers for the first time. As an application we will present results for spin-independent and spin-dependent structure factors for WIMP-nucleus scattering necessary for the evaluation of dark matter experiments.
⋆This work was supported in part by the DFG through grant SFB 634, the ERC Grant No. 307986 STRONGINT, the Helmholtz Alliance HA216/EMMI, and a BMBF ARCHES Award.