A study of $\eta^\prime$ formation in photon-photon collisions - INSPIRE

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A study of $\eta^\prime$ formation in photon-photon collisions

TPC/Two Gamma

Collaboration

Dec, 1986

Published in:

Phys.Rev.D 35 (1987) 2650

DOI:

10.1103/PhysRevD.35.2650

PDG:

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

\rightarrow

{{\mathit \gamma}}{{\mathit \gamma}}

Experiments:

SLAC-PEP-004

reference search33 citations

Citations per year

Abstract: (APS)

Two-photon formation of the η’ in the reaction e+e−→e+e−ηm’→e+e−π+π−γ has been studied for nearly real and virtual photons at an e+e− center-of-mass energy of 29 GeV. The γγ width of the η’ is found to be 4.5±0.3(stat.)±0.7(syst.) keV. The measured dependence of this γγ width upon the photon four-momentum squared in the range 0–5 GeV2 agrees with predictions both from QCD and from ρ dominance. A spin analysis results in a strong preference for a spin-zero, relative to a spin-two, assignment for the η’. No evidence for C-parity violation is found in this η’→π+π−γ decay mode.

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: INELASTIC SCATTERING
INELASTIC SCATTERING: ELECTRON POSITRON
EXCHANGE: TWO-PHOTON
TWO-PHOTON: EXCHANGE
PHOTON PHOTON: INTERACTION
INTERACTION: PHOTON PHOTON
ETA(958): PHOTOPRODUCTION
PHOTOPRODUCTION: ETA(958)

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Figures(0)

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