Bochum 2009 – scientific programme

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HK: Fachverband Hadronen und Kerne

HK 67: Poster Session

HK 67.72: Poster

Thursday, March 19, 2009, 14:00–16:00, Audi-Max

Fundamental symmetries in ²¹Na decay — •D.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 and the status of this phase of the program will be described.