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The angular dependences of proton photoproduction from the nuclei 12 C, 63 Cu and 208 Pb irradiated by bremsstrahlung γ-quanta with maximum energy 4.5 GeV, both in the cumulative region (i.e. in the kinematical region in which the production of protons in the collision of γ-quanta of the given energy with the quasi-free nuclear nucleon is forbidden) and in the non-cumulative region, are investigated. The experimental data obtained are compared with the results of theoretical calculations of cumulative proton photoproduction according to the following models: the “quasi-two-body” scaling model, the low-nucleon correlation model, the fluctuon model and the cluster model.

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Inclusive photoproduction of $\pi^0$ mesons at 6 GeV

Berger, Christoph ; Dick, G. ; Erlewein, W. ; et al.

Phys.Lett.B 47 (1973) 377-380, 1973.

Inspire Record 95414 DOI 10.17182/hepdata.45246

An experiment has been performed to study the inclusive photoproduction of π 0 mesons. Photoproduced π 0 's were detected in a hodoscope consisting of 14 lead glass Cerenkov counters. To obtain the cross sections at a photon energy of 6 GeV we used the photon-difference method. Data are presented in terms of the Feynman variable x = q ‖ ∗ (√s/2) and the trnasverse momentum q⊥. We have measured four q ⊥ distributions at x = 0.2, 0.4, 0.6 and 0.8. The results dhow that the π 0 rate at small values of q ⊥ is smaller than the π± rate. The data can be fitted smoothly by a form A exp (− Bq ⊥ 2 ) with a value about 3.5 GeV −2 for the slope parameter B .

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Measurement of inclusive photoproduction at 3.2 gev and comparison with electroproduction

Burfeindt, H. ; Buschhorn, G. ; Genzel, H. ; et al.

Phys.Lett.B 43 (1973) 345-348, 1973.

Inspire Record 84913 DOI 10.17182/hepdata.45255

Inclusive photoproduction cross sections for pions, kaons and protons have been measured in the photon fragmentation region and are compared with recent electroproduction data at q 2 = 1.16 (GeV/ c ) 2 . If the cross sections are normalized to the total hadronic cross sections at q 2 = 0 and q 2 = 1.16 (GeV/ c ) 2 , respectively, we observe that more pions, about an equal number of protons, but fewer kaons are found in the photoproduction case for x ≥ 0.3.

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Energy dependence of the parameters $B$ and $C$ of the invariant cross section $f=C$exp(-$Bp^{2}$) for production of cumulative protons in the reaction $\gamma A \rightarrow pX$ in the nuclei $^{12}$C, $^{64}$Cu, and $^{207}$Pb

A-dependence of Inclusive $\pi^\pm$ Meson Photoproduction

Excitation Function of Photoproduction of Cumulative Protons on Nuclei

$\pi^\pm$ Meson Spectra in the Inclusive Reaction $\gamma C \to \pi X$ Caused by Bremsstrahlung $\gamma$ Quanta With the Maximum Energy 4.5-{GeV}

On the Angular Dependence of Photoprotons From Nuclei Irradiated by $\gamma$ Quanta With Maximum Energy 4.5-{GeV}

Inclusive photoproduction of $\pi^0$ mesons at 6 GeV

Measurement of inclusive photoproduction at 3.2 gev and comparison with electroproduction