Acta Physica Polonica B

Vol. 37, No. 1, January 2006, page 239

Lepton Pairs from a Forbidden M0 Transition: Signaling an Elusive Light Neutral Boson?

A. Krasznahorkay, F.W.N. de Boer, M. Csatlos, L. Csige, Z. Gacsi, J. Gulyas, M. Hunyadi, T.J. Ketel, J. van Klinken, A. Krasznahorkay Jr, A. Vitez

Electron--positron pairs have been observed in the 10.95 MeV 0-\rightarrow 0+ decay in 16O. This magnetic monopole (M0) transition cannot proceed by \gamma -ray decay and is, to first order, forbidden for internal pair creation. However, the transition may also proceed by the emission of a light neutral 0- or 1+ boson, which might play a role in the current quest for light dark matter in the Universe.

PACS numbers: 23.20.Ra, 23.20.En, 14.70.Pw


 
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