Published January 1977 | Version v1
Report Restricted

The three photon final state produced in e+e- collision at 3.6 GeV and at PSI-3695

Creators

  • 1. Technische Hochschule Aachen (Germany, F.R.). Lehrstuhl fuer Experimentalphysik 1A und 1. Physikalisches Inst.

Description

The three photon final state produced in e+e- collisions at 3.6 GeV and at the mass of the PSI-3695 resonance has been measured using the nonmagnetic part of the double arm spectrometer DASP. A total of 31 events is observed outside the resonance region compared to 35.1 events predicted from QED. At the mass of the PSI-3695 49 events are observed compared to 37.2 events expected from QED. Limits on radiative decays via intermediate states are given. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Die in e+e- Stoessen bei 3,6 GeV und der Masse der PSI-3695 Resonanz erzeugten Endzustaende mit drei Photonen wurden mit dem nichtmagnetischen Teil des Doppelarmspektrometers DASP gemessen. Insgesamt wurden 31 Ereignisse ausserhalb des Resonanzbereichs beobachtet, im Vergleich zu 35,1 von der QED vorausgesagten. Im Bereich der PSI-3695 Resonanz wurden 49 Ereignisse gefunden, im Vergleich zu 37,2 nach der QED. Grenzen fuer Zerfaelle ueber intermediaere Zustaende werden angegeben. (orig.)

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Additional details

Publishing Information

Imprint Pagination
6 p.
Report number
DESY--77/03

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
8311971
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ELECTRON-POSITRON INTERACTIONS; GEV RANGE 01-10; PARTICLE DECAY; PHOTONS; PSI-3695 RESONANCES; QUANTUM ELECTRODYNAMICS
Descriptors DEC
BOSONS; DECAY; ELECTRODYNAMICS; ELEMENTARY PARTICLES; ENERGY RANGE; FIELD THEORIES; GEV RANGE; HADRONS; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MASSLESS PARTICLES; MESON RESONANCES; MESONS; PARTICLE INTERACTIONS; PSI RESONANCES; QUANTUM FIELD THEORY; RESONANCE PARTICLES

Optional Information

Notes
2 figs.; 1 tab.; 8 refs.