Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 9: Fundamentale Symmetrien
HK 9.1: Gruppenbericht
Montag, 17. März 2014, 16:30–17:00, HZ 3
Electric Dipole Moments of Light Nuclei in Effective Field Theory — •Jan Bsaisou1,2, Christoph Hanhart1,2,3,4, Susanna Liebig1,2, Ulf-G. Meißner1,2,3,4,5,6, David Minossi1,2, Andreas Nogga1,2,3,4, Jordy de Vries1,2,3,4, and Andreas Wirzba1,2,3,4 — 1Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany — 2Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Germany — 3Institute for Advanced Simulation, Forschungszentrum Jülich, D-52425 Germany — 4JARA - Forces And Matter Experiments, Forschungszentrum Jülich, D-52425 Germany — 5Helmholtz-Institut für Strahlen und Kernphysik, Universität Bonn, D-53115 Bonn, Germany — 6Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany
Electric dipole moments (EDMs) break parity (P) and time-reversal (T) symmetry and thus, by the CPT-theorem, CP-symmetry. Once measured, they will be unambiguous signs of new physics since CP-violation from the standard mechanism predicts EDMs that are experimentally inaccessible in the foreseeable future. We calculate within the framework of effective field theory the two-nucleon contributions to the EDMs of the deuteron, helion, and triton induced by P- and T-violating terms that arise from the QCD θ-term or dimension-6 sources of physics beyond the Standard Model (SM). We demonstrate what insights into physics beyond the SM can be gained from a suitable combination of measurements and, if needed, supplementary lattice QCD calculations.