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DPG

Hamburg 2009 – scientific programme

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A: Fachverband Atomphysik

A 15: Poster I

A 15.16: Poster

Tuesday, March 3, 2009, 16:30–19:00, VMP 9 Poster

Fundamental symmetries in 21Na decayD.J. van der Hoek, R. Hoekstra, K. Jungmann, •W.L. Kruithof, C.J.G. Onderwater, M. Sohani, L. Willmann, and H.W. Wilschut — KVI, University of Groningen, Groningen, The Netherlands

The β-ν correlations in β-decay allows searching for contributions that go beyond the V-A description of the Standard Model for the electroweak interaction. We are developing an experimental setup to measure correlations in the β-decay of 21Na. By trapping the radioactive atoms, the recoiling nucleus (kinetic energy <230 eV) can be measured in a reaction microscope in coincidence with the emitted β particle. The first step is to study β-ν correlations that allows to set limits on scalar and tensor contributions. By polarizing the parent nucleus it becomes possible to search for time reversal violation. The production and trapping of 21Na has been accomplished. Details of the setup with a two laser system and the status of this phase of the program will be described.

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