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Mainz 2017 – scientific programme

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A: Fachverband Atomphysik

A 9: Precision Spectroscopy II

A 9.5: Talk

Monday, March 6, 2017, 18:00–18:15, N 3

Atomic Parity Violation in Ytterbium and Dysprosium — •Anne Fabricant1, Dionysios Antypas2, Lykourgos Bougas1, Nathan Leefer3, Konstantin Tsigutkin4, and Dmitry Budker1,2,51Johannes Gutenberg Universität-Mainz, Germany — 2Helmholtz Institut-Mainz, Germany — 3Nixie Labs, Mountain View, California, USA — 4ASML, Veldhoven, The Netherlands — 5University of California at Berkeley, USA

Atomic-parity-violation (APV) experiments enable us to probe fundamental electroweak and nuclear physics at low energies on a tabletop. Ytterbium (Yb) and dysprosium (Dy) are excellent candidates for APV measurements because of their particularly strong parity-violating effects (already confirmed experimentally for Yb) and the availability of many stable isotopes. Both systems are ideal for investigation of neutron distributions in the nucleus (the neutron skin), as well as of anapole moments arising from the weak interaction between nucleons. In addition, Dy is used to search for variation of fundamental constants. We report on the current status of our updated experimental setups in Mainz, present our latest results, and discuss future plans.

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