ELEMENTARY LIGHT NEUTRAL BOSONS: NEW LIMITS FROM PRECISION EXPERIMENTS
- 1 April 1986
- journal article
- Published by World Scientific Pub Co Pte Ltd in Modern Physics Letters A
- Vol. 01 (01) , 1-7
- https://doi.org/10.1142/s0217732386000026
Abstract
We show that positronium hyperfine splitting and Delbrück scattering impose stringent bounds on the coupling of a light neutral boson to the electron-positron and the photon field. These limits are relevant for the “new-particle interpretation” of coincident electron-positron lines observed at GSI.Keywords
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