August 29, 2022 to September 4, 2022
America/New_York timezone

Beam EDM – A pulsed-beam experiment to search for the neutron electric dipole moment

Aug 31, 2022, 4:00 PM
30m
Poinsettia/Quince 

Poinsettia/Quince 

Parallel session talk Tests of Symmetries and the Electroweak Interaction EW: Tests of Symmetries and the Electroweak Interaction

Speaker

Florian Piegsa (University of Bern)

Description

The neutron represents a versatile tool in the realm of fundamental particle physics. It is used to perform precision physics measurements at low energies with the goal to search for signals beyond the Standard Model of particle physics. In this respect, the neutron Electric Dipole Moment (EDM) has attracted interest as a promising channel for finding new physics since decades. The existence of a permanent neutron EDM violates the combined symmetries of parity (P) and charge conjugation (C) invoking the CPT symmetry. This new source of CP violation could help to explain the apparent baryon asymmetry in our Universe. The Beam EDM experiment aims to measure the neutron EDM using a novel technique. The experiment exploits a time-of-flight Ramsey technique with a pulsed beam which allows to distinguish between time-dependent and time-independent effects – and by this overcoming the previously limiting systematic relativistic vxE-effect. Recently, a proof-of-principle apparatus has been developed to perform detailed systematic investigations for a future full-scale experiment intended for the European Spallation Source in Sweden. In this presentation, the details of the experimental apparatus, future prospects, together with the latest results from a data taking campaign at the Institute Laue-Langevin in France will be presented.

Primary author

Florian Piegsa (University of Bern)

Presentation materials