Searching for New Physics at the Quantum Technology Frontier

Session

Electric Dipole Moments (EDMs)

3 Jul 2023, 16:00

Congressi Stefano Franscini (CSF), Ascona (Ticino), Switzerland

Conveners

Electric Dipole Moments (EDMs)

• Aldo Antognini (Paul Scherrer Institute)

Description

To explain the current matter-antimatter asymmetry in the Universe, one requires new sources of CP-violation beyond those described within the Standard Model. Searches for permanent EDMs in electrons, muons, neutrons and protons provide a unique method to test of time (T) reversal invariance and the associated CP-invariance. EDM searches can probe the mass scales of new CP-violating interactions at a level which is well beyond the reach of current colliders.

101. Session's intro

Aldo Antognini (Paul Scherrer Institute)

03/07/2023, 16:00

86. Electric dipole moments in effective field theory

Peter Stoffer

03/07/2023, 16:05

Talk

The baryon asymmetry of the universe points towards CP-violating sources beyond the Standard Model. If these consist of heavy new particles, their indirect low-energy effects can be described by effective field theories. I will describe theoretical challenges and recent progress within this framework for the extraction of bounds on CP violation, focusing on hadronic EDMs. In particular, I will...

55. EDMcubed: Measuring the electron electric dipole matrix element using BaF molecules embedded in an argon matrix

Eric Hessels

03/07/2023, 16:40

Talk

The EDM$^3$ collaboration is pursuing a measurement of the electric dipole moment of the electron using barium monofluoride molecules embedded in a cryogenic argon solid. The method allows for very large samples of molecules to be used and therefore very good statistical uncertainties can be expected. The scheme also shows promise for control of systematic uncertainties. An update on our...

77. Systematic effects in searches for the electron EDM

Lorenz Willmann

03/07/2023, 17:45

Talk

Experimental searches for permanent electric dipole moments (EDM) on a fundamental particle are predominantly executed in composed systems, such as neutrons, atoms or molecules. The experiments have reached a sensitivity which narrows the gap to the Standard Model predictions significantly which requires an improved understanding of the properties of composed systems in a particular...

76. Next-generation nEDM search at PSI

Dr Efrain Patrick Segarra

03/07/2023, 18:20

Talk

The next-generation neutron electron dipole moment (EDM) measurement is currently under construction at the Paul Scherrer Institute (PSI), the n2EDM experiment. n2EDM will deliver, at minimum, an order of magnitude better sensitivity as compared to current limits on the neutron EDM. This increased sensitivity on the neutron EDM will provide stringent constraints on time-reversal violating...

57. Search for the muon electric dipole moment using the frozen-spin technique.

Chavdar Dutsov (Paul Scherrer Institute (CH))

03/07/2023, 18:45

Talk

At the Paul Scherrer Institute we are developing a high precision instrument to measure the electric dipole moment (EDM) of the muon. The presence of a permanent EDM in an elementary particle would imply a violation of time invariance and the combined symmetry of Charge-Parity (CP). While the Standard Model of particle physics allows for a large CP-violating phase, it also predicts EDMs that...