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PHOTOPRODUCTION OF eta0 MESONS AT 4-Gev

Bellenger, D. ; Deutsch, S. ; Luckey, David ; et al.
Phys.Rev.Lett. 21 (1968) 1205, 1968.
Inspire Record 53018 DOI 10.17182/hepdata.21703

We have measured η0 photoproduction at 4 GeV. We find our results to be consistent with a theoretical preduction relating this cross section to ω0 production by π mesons using a vector-dominance model; there is no evidence for a dip or change of slope at −t=0.6 as seen in π0 photoproduction.

1 data table
Table 1

Axis error includes +- 0.0/0.0 contribution (?////).


Photoproduction of eta mesons from hydrogen

Dewire, J. ; Gittelman, B. ; Loe, R. ; et al.
Phys.Lett.B 37 (1971) 326-328, 1971.
Inspire Record 75928 DOI 10.17182/hepdata.28354

The differential cross section for eta photoproductions has been measured for incident photon energies of 4 and 8 GeV and momentum tranfers − t = 0.3 to 0.8 (GeV/ c ) 2 .

2 data tables
Table 1

Axis error includes +- 9.4/9.4 contribution.

Table 2

Axis error includes +- 9.4/9.4 contribution.


Photoproduction of eta-mesons on hydrogen at photon energies between 1.5 and 2.2 gev

Christ, A. ; Husmann, D. ; Jansen, W. ; et al.
Lett.Nuovo Cim. 8S2 (1973) 1039-1043, 1973.
Inspire Record 86582 DOI 10.17182/hepdata.37327

None

1 data table
Table 1

APPROXIMATELY CONSTANT MOMENTUM TRANSFER.


The Polarized Beam Asymmetry in Photoproduction of eta Mesons from Protons at 2.5-GeV and 3.0-GeV

Bussey, P.J. ; Raine, C. ; Rutherglen, J.G. ; et al.
Phys.Lett.B 61 (1976) 479-482, 1976.
Inspire Record 108515 DOI 10.17182/hepdata.27687

Measurements of the polarised beam asymmetry parameter Σ for eta photoproduction from protons, have been carried out at incident energies of 2.5 GeV and 3.0 GeV, and for various t -values between −0.2 (GeV/c) 2 and −1.2 (GeV/c) 2 . The values of Σ are close to +1 for values of | t | less than 0.7 (GeV/c) 2 , showing that there can be little contribution from unnatural parity exchange in any Regge exchange model of the process, in disagreement with present theories. Differential cross sections for the process werre also measured, and are consistent with those from other experiments.

2 data tables
Table 1

No description provided.

Table 2

No description provided.