The dawn of nuclear supremacy for dark matter searches — implications of the laser excitation of Th-229

26 Sept 2024, 15:30
15m
Seminar room 4b

Seminar room 4b

Particle Phenomenology Parallel Thursday Pheno 1

Speaker

Wolfram Ratzinger

Description

The isomer transition of Th-229 has recently been excited for the first time by a VUV laser and subsequently the transition energy has been determined with a relative error of $O(10^{-6})$ (by now even $O(10^{-10})$). Due to its enhanced sensitivity to scalars coupling to the nuclear sector compared to other optical clocks, measurements of the lineshape will soon start probing uncharted parameter space as I will discuss. This is even before an optical clock based on this transition is realized.

Primary authors

Chaitanya Paranjape Ekkehard Peik Elina Fuchs Eric Madge Fiona Kirk Gilad Perez Johannes Tiedau Wolfram Ratzinger

Presentation materials