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MO: Fachverband Molekülphysik

MO 17: Precision

MO 17.1: Talk

Thursday, March 17, 2022, 10:30–10:45, MO-H6

Spin precession with BaF for EDM searches — •Virginia Marshall^1,2, Parul Aggarwal^1,2, Hendrick L. Bethlem^1,3, Alexander Boeschoten^1,2, Anastasia Borschevsky^1,2, Malika Denis^1,2, Pi Haase^1,2, Steven Hoekstra^1,2, Joost van Hofslot^1,2, Klaus Jungmann^1,2, Thomas B. Meijknecht^1,2, Maarten C. Mooij^2,3, Rob G.E. Timmermans^1,2, Anno Touwen^1,2, Wim Ubachs³, Lorenz Willmann^1,2, and Yanning Yin^1,2 — ¹Netherlands, Groningen, RUG — ²Netherlands, Amsterdam, Nikhef — ³Netherlands, Amsterdam, VU

eEDM sensitive searches form a probe into the Standard Model of particle physics and its extensions. A BaF supersonic beam with a velocity of around 600 m/s, moving in a controlled 10 kV/cm electric field and nT magnetic field, forms an experimental setup for eEDM sensitive searches. The eEDM search employs the X ² Σ⁺ ν=0, N=0 ground state of BaF, which is controlled solely by interactions with laser fields in order to execute a spin precession measurement in well known E- and B-fields. Our particular interest is on the dependence of the signal on the laser parameters such as intensity, polarization and frequency detuning. With this we aim to complete a first measurement step in the coming year at a sensitivity level 10⁻²⁸ e cm.