Observation of the two-photon decay of a light penetrating particle

Faissner, H.; Frenzel, E.; Heinrigs, W.; Preussger, A.; Samm, D.; Samm, U.

doi:10.1016/0370-2693(81)90749-8

Cited by 39 publications

(1 citation statement)

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“…These particles could be produced in beam dump experiments (Faissner et al , 1981) and also in the decay of a vector meson such as J/1( -+y+a. Porter (1981) has reported the search for this decay of the J/f resonance using the Crystal Ball detector at SPEAR.…”

Section: Possible Background Comes From Radiative Processes Suchmentioning

confidence: 99%

Review ofe+e−physics at PETRA

Duinker

1982

Rev. Mod. Phys.

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A review is given of the experimental investigation of high-energy e e interactions at PETRA, the electronpositron colliding beam accelerator at DESY in Hamburg, Germany. The energy of the machine is such that the strong, electromagnetic, and weak interactions start to play a role in the processes which can be studied.Results are presented on tests of quantum electrodynamics studying e+e, p+p, and v. +7. . The fermion pair production processes e+e~FF, where the FF pair stands for either a lepton pair (e+e, p+p, and 7. +v. I or a quark-antiquark pair, are investigated to study the effects of the Z' exchange. The measurements of R, the ratio of hadronic to pointlike muon pair cross section, the search for new quark Aavors, and other new particles are reviewed. Finally the discovery of three-jet events arising from the radiation of hard noncollinear gluons as predicted by quantum chromodynamics and the determinations of the strong coupling constant a, are discussed.

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Section: Possible Background Comes From Radiative Processes Suchmentioning

confidence: 99%