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Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 64: Nuclear Physics Applications

HK 64.4: Vortrag

Mittwoch, 18. März 2009, 17:45–18:00, H-ZO 100

Systematic study of EC decays in the 146Gd region relevant for a Monoenergetic Neutrino Beam Facility — •Maria Esther Estevez Aguado1, Alejandro Algora1, Berta Rubio1, Jose Bernabeu1, Enrique Nacher1, Jose Luis Tain1, Andres Gadea1, Daniel Cano2, Karlheinz Burkard3, Joachim Doering3, Michal Gierlik3, Wilfried Hueller3, Reinhard Kirchner3, Ivan Mukha3, Cristina Plettner3, Ernest Roeckl3, Jose Javier Valiente4, and Leonid Batist51IFIC (CSIC-UV), Valencia, Spain — 2CIEMAT, Madrid, Spain — 3GSI, Darmstadt, Germany — 4INFN, Legnaro (Padova) Italy — 5PNPI, Gatchina, Russia

The availability of a monochromatic neutrino source with adjustable energy could be an invaluable tool for the study of Charge-Parity (CP) violation in the leptonic sector in the frame of the Electroweak Theory of the Standard Model. It has been proposed [1] to use as a neutrino source nuclei that decay by means of the electron capture (EC) process inside a storage ring. A systematic study of candidate nuclei in the 146Gd region has been carried out.

In this contribution we show the results of the experimental study of the beta decay of two possible candidate nuclei (152Yb and 150Er) using the Total Absortion Gamma Spectroscopy (TAGS) technique. A comparison of these results with earlier high resolution measurements will be discussed.

[1] J. Bernabeu et al, JHEP12 (Dec.2005) 014.

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