Abstract
The cross section for the processe + e −→γγ has been measured for c.m. energies 39.5<W<46.8 GeV. Good agreement with the predictions of QED was found and lower limits for the cut-off parameters of Λ+>61 GeV and Λ+> GeV (95% confidence level) have been determined. A search for two photon final states with missing energy provided lower limits on the masses of the photino and selectron.
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Supported by the Bundesministerium für Forschung und Technologie
Supported by the UK Science and Engineering Research Council
On leave from Institute of Nuclear Physics, Cracow, Poland
On leave from Warsaw University, Poland
On leave from Weizman Institute, Regovot, Israel
On leave from University of Malaya, Kuala Lumpur
On leave from Rutherford Appleton Laboratory, Chilton, UK
Supported by the Minerva Gesellschaft für Forschung mbH
Supported by the US Department of Energy, contract DE-AC02-76ER00881
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TASSO Collaboration., Althoff, M., Braunschweig, W. et al. Photon pair production bye + e − annihilation and search for supersymmetric photinos at energies greater than 40 GeV. Z. Phys. C - Particles and Fields 26, 337–342 (1984). https://doi.org/10.1007/BF01452558
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DOI: https://doi.org/10.1007/BF01452558