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A: Fachverband Atomphysik

A 30: Precision spectroscopy of atoms and ions (with Q)

A 30.15: Poster

Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof

Atomic Parity Violation in Ytterbium — •Anne Fabricant¹, Dionysios Antypas², Lykourgos Bougas², Nathan Leefer², Konstantin Tsigutkin³, and Dmitry Budker^1,2 — ¹Johannes Gutenberg Universität-Mainz, Mainz, Germany — ²Helmholtz Institut-Mainz, Mainz, Germany — ³ASML, Veldhoven, The Netherlands

Atomic-parity-violation (APV) experiments enable us to probe fundamental electroweak physics at low energies on a tabletop. Ytterbium (Yb) is a good candidate for APV measurements because of its particularly strong parity-violating effects and the availability of seven stable isotopes. The previous incarnation of the experiment, at UC Berkeley, succeeded in measuring the largest APV effect ever observed. Currently we are developing a new experimental apparatus in Mainz, in order to improve the accuracy of the measurements. This will enable us to investigate neutron distributions in the nucleus (the neutron skin), as well as the anapole moment arising from the weak interaction between nucleons.