Andronov, E.
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Photoproduction of the psi (3100) Meson at 11-GeV

Gittelman, B. ; Hanson, K.M. ; Larson, D. ; et al.
Phys.Rev.Lett. 35 (1975) 1616, 1975.
Inspire Record 99727 DOI 10.17182/hepdata.21158

The photoproduction of the ψ(3100) meson from a beryllium target has been measured using an 11.8-GeV bremsstrahlung beam. The energy and angular dependence of the measured spectra may be obtained from an elastic nucleon cross section of the form dσdt=(1.01±0.20)exp[(1.25±0.20)t] nb/GeV2. This cross section is exceedingly small in comparison with those of the other vector mesons.

1 data table
Table 1

ELECTRON PAIR PRODUCTION FROM BERYLLIUM TARGET. ELASTIC CROSS SECTION VALUE ALLOWS FOR SYSTEMATIC UNCERTAINTIES AND POSSIBLE INELASTIC CONTRIBUTIONS. -TMIN = 0.41 GEV**2.