The Three Photon Final State Produced in e+ e- Collision at 3.6-GeV and at the psi-prime

Braunschweig, W.; Martyn, H.-U.; Sander, H.G.; Schmitz, D.; Sturm, W.; Wallraff, W.; Berkelman, Karl; Cords, D.; Felst, R.; Fries, R.

doi:10.1016/0370-2693(77)90115-0

The Three Photon Final State Produced in e+ e- Collision at 3.6-GeV and at the psi-prime

DASP

Collaboration

•

W. Braunschweig
(
- Aachen, Tech. Hochsch.
)

Jan, 1977

4 pages

Published in:

Phys.Lett.B 67 (1977) 249-252

Published: 1977

DOI:

10.1016/0370-2693(77)90115-0

PDG:

{{\mathit \psi}{(2S)}}

\rightarrow

{{\mathit \gamma}}{{\mathit \eta}^{\,'}{(958)}}

Report number:

DESY-77-03

Experiments:

DESY-143

reference search18 citations

Citations per year

Abstract: (Elsevier)

The three photon final state produced in e + e − collisions at 3.6 GeV and at the mass of the ψ′ 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 ψ′ 49 events are observed compared to 37.2 events expected from QED. Limits on radiative decays via intermediate states are given.

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
FINAL STATE: (3PHOTON)
QUANTUM ELECTRODYNAMICS
PHOTON: FINAL STATE
FINAL STATE: PHOTON
ETA(549): ELECTROPRODUCTION
ELECTROPRODUCTION: ETA(549)

References(5)

Figures(0)

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DASP

Collaboration

•

W. Braunschweig
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)

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,
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