Development of a cold atomic muonium beam for next generation atomic physics and gravity experiments

Author:

Soter Anna1,Knecht Andreas2

Affiliation:

1. Swiss Federal Institute of Technology in Zurich (ETH)

2. Paul Scherrer Institute

Abstract

A high-intensity, low-emittance atomic muonium (M =\mu^+ + e^-=μ++e) beam is being developed, which would enable improving the precision of M spectroscopy measurements, and may allow a direct observation of the M gravitational interaction. Measuring the free fall of M atoms would be the first test of the weak equivalence principle using elementary antimatter (\mu^+μ+) and a purely leptonic system. Such an experiment relies on the high intensity, continuous muon beams available at the Paul Scherrer Institute (PSI, Switzerland), and a proposed novel M source. In this paper, the theoretical motivation and principles of this experiment are described.

Publisher

Stichting SciPost

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