$M_{p\eta}$ invariant mass distribution for $E_\gamma$ = 1400-1500 MeV.

$M_{p\eta}$ invariant mass distribution for $E_\gamma$ = 1500-1600 MeV.

$M_{p\eta}$ invariant mass distribution under the conditions: $E_\gamma$ = 1400-1500 MeV; 1120 MeV $\leq M_{p\pi^0} \leq$ 1220 MeV; $\theta_p^{lab} \leq$ 25°; 25° $\leq \theta_\gamma^{lab} \leq$ 155°.

$M_{p\eta}$ invariant mass distribution under the conditions: $E_\gamma$ = 1400-1500 MeV; 1120 MeV $\leq M_{p\pi^0} \leq$ 1220 MeV; $\theta_p^{lab} \leq$ 25°; 1° $\leq \theta_\gamma^{lab} \leq$ 155°.

$M_{p\eta}$ invariant mass distribution for $E_\gamma$ = 1400-1500 MeV and $M_{p\pi^0} \leq$ 1190 MeV, allowing for all proton and photon laboratory angles.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1420-1540 MeV and $M_{p\pi^0} \leq$ 1170 MeV.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1420-1540 MeV and $M_{p\pi^0} \leq$ 1180 MeV.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1420-1540 MeV and $M_{p\pi^0} \leq$ 1190 MeV.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1420-1540 MeV and $M_{p\pi^0} \leq$ 1200 MeV.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1420-1540 MeV and $M_{p\pi^0} \leq$ 1210 MeV.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1420-1540 MeV and $M_{p\pi^0} \leq$ 1220 MeV.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1400-1420 MeV and $M_{p\pi^0} \leq$ 1190 MeV.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1420-1460 MeV and $M_{p\pi^0} \leq$ 1190 MeV.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1460-1500 MeV and $M_{p\pi^0} \leq$ 1190 MeV.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1500-1540 MeV and $M_{p\pi^0} \leq$ 1190 MeV.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1540-1600 MeV and $M_{p\pi^0} \leq$ 1190 MeV.

$M_{p\eta}$ invariant mass distribution for the incident photon energy range $E_\gamma$ = 1420-1540 MeV and $M_{p\pi^0} \leq$ 1190 MeV.

Excess yield relative to the PWA distributions in the invariant mass distributions $M^2_{p\eta}$.

Excess yield relative to the PWA distributions in the invariant mass distributions $M^2_{\pi^0\eta}$.

Excess yield relative to the PWA distributions in the invariant mass distributions $M^2_{p\pi^0}$, with a cut on the structure in the $M^2_{p\eta}$ invariant mass distribution.

Excess yield relative to the PWA distributions in the $p-\eta$ opening angle distribution in the $\gamma p$ centre-of-mass system.

Excess yield relative to the PWA distributions in the $p-\eta$ opening angle distribution in the $\gamma p$ centre-of-mass system.

Excess yield relative to the PWA distributions in the $\pi^0-\eta$ opening angle distribution in the $\gamma p$ centre-of-mass system.

Excess yield relative to the PWA distributions in the $\pi^0-\eta$ opening angle distribution in the $\gamma p$ centre-of-mass system.

Differential cross section $d\sigma/dM_{\pi^0\eta}$ for $E_\gamma$ = 1540-1600 MeV.

$M_{p\eta}$ invariant mass distribution, taken as difference to the PWA calculations (s. Fig. 11).

$M_{\pi^0\eta}$ invariant mass distribution, taken as difference to the PWA calculations (s. Fig. 11).

$\theta_{p\eta}$ opening angle distribution, taken as difference to the PWA calculations (s. Fig. 12).

$\theta_{\pi^0\eta}$ opening angle distribution, taken as difference to the PWA calculations (s. Fig. 12).

Differential cross section measurement.

The effective exponential slope, $b_n$, obtained from the fit of double differential photoproduction cross sections ${\rm d^2}\sigma_{\gamma p}/{\rm d}x_L{\rm d}p_{T,n}^2$ to a single exponential function in bins of $x_L$. The first uncertainty represents the fit error from the statistical and uncorrelated systematic uncertainty and the second one is due to the correlated systematic uncertainty.

Energy dependence of the exclusive photoproduction of a $\rho^0$ meson associated with a leading neutron, $\gamma p \to \rho^0 n \pi^+$. The first uncertainty is statistical and the second is systematic. The global normalisation uncertainty of $4.4\%$ is not included. $\Phi_{\gamma}$ is the integral of the photon flux, Eq. (3) of paper, in a given $W_{\gamma p}$ bin.

Differential photoproduction cross section ${\rm d}\sigma_{\gamma p}/{\rm d}\eta$ for the exclusive process $\gamma p \to \rho^0 n \pi^+$ as a function of the $\rho^0$ pseudorapidity in the kinematic range $0.35 < x_L < 0.95$, $\theta_n < 0.75$ mrad and $20 < W_{\gamma p} < 100$ GeV. The statistical, uncorrelated and correlated systematic uncertainties, $\delta_{stat}$, $\delta_{sys}^{unc}$ and $\delta_{sys}^{cor}$ respectively, are given, which does not include the global normalisation error of $4.4\%$.

Differential photoproduction cross section ${\rm d}\sigma_{\gamma p}/{\rm d}t^{\prime}$ for the exclusive process $\gamma p \to \rho^0 n \pi^+$ as a function of the $\rho^0$ four-momentum transfer squared, $t^{\prime}$, in the kinematic range $0.35 < x_L < 0.95$, $\theta_n < 0.75$ mrad and $20 < W_{\gamma p} < 100$ GeV. The statistical, uncorrelated and correlated systematic uncertainties, $\delta_{stat}$, $\delta_{sys}^{unc}$ and $\delta_{sys}^{cor}$ respectively, are given, which does not include the global normalisation error of $4.4\%$.

Exponential slopes, $b_1$ and $b_2$, and the ratio $\sigma_1/\sigma_2$, obtained from the components of fit, Eq. (14) of paper, to the differential cross section ${\rm d}\sigma_{\gamma p}/{\rm d}t^{\prime}$ in bins of $x_L$. The errors represent the statistical and systematic uncertainties added in quadrature.

Exponential slopes, $b_1$ and $b_2$, and the ratio $\sigma_1/\sigma_2$, obtained from the components of fit, Eq. (14) of paper, to the differential cross section ${\rm d}\sigma_{\gamma p}/{\rm d}t^{\prime}$ in bins of $p_{T,n}^2$. The errors represent the statistical and systematic uncertainties added in quadrature.

Energy dependence of elastic $\rho^0$ photoproduction on the pion, $\gamma \pi^+ \to \rho^0 \pi^+$, extracted in the one-pion-exchange approximation using OPE1 sample. The first uncertainty represents the full experimental error and the second is the model error coming from the pion flux uncertainty (see text). $\Gamma_\pi(x_L)$ represents the value of the pion flux, Eqs. (5-6) of paper, integrated over the $p_{T,n}<0.2$ GeV range, at a given $x_L$.

Cross section of elastic $\rho^0$ photoproduction on the pion, $\gamma \pi^+ \to \rho^0 \pi^+$, extracted in the one-pion-exchange approximation using three different samples: full sample, OPE1 and OPE2. The first uncertainty represents the full experimental error and the second is the model error coming from the pion flux uncertainty (see text). $\Gamma_\pi$ represents the value of the pion flux, Eqs. (5-6) of paper, integrated over the corresponding $(x_L,p_{T,n})$ range.

HERA combined reduced cross sections $\sigma_{r,\rm NC}^{+}$ for NC $e^{+}p$ scattering at $\sqrt{s} = 225$ GeV; $\delta_{\rm stat}$, $\delta_{\rm uncor}$ and $\delta_{\rm cor}$ represent the statistical, uncorrelated systematic and correlated systematic uncertainties, respectively; $\delta_{\rm rel}$, $\delta_{\gamma p}$, $\delta_{\rm had}$ and $\delta_{1}$ to $\delta_{4}$ are the correlated sources of uncertainties arising from the combination procedure. The uncertainties are quoted in percent relative to $\sigma_{r,\rm NC}^{+}$.

HERA combined reduced cross sections $\sigma_{r,\rm NC}^{-}$ for NC $e^{-}p$ scattering at $\sqrt{s} = 318$ GeV; $\delta_{\rm stat}$, $\delta_{\rm uncor}$ and $\delta_{\rm cor}$ represent the statistical, uncorrelated systematic and correlated systematic uncertainties, respectively; $\delta_{\rm rel}$, $\delta_{\gamma p}$, $\delta_{\rm had}$ and $\delta_{1}$ to $\delta_{4}$ are the correlated sources of uncertainties arising from the combination procedure. The uncertainties are quoted in percent relative to $\sigma_{r,\rm NC}^{-}$.

HERA combined reduced cross sections $\sigma_{r,\rm CC}^{+}$ for CC $e^{+}p$ scattering at $\sqrt{s} = 318$ GeV; $\delta_{\rm stat}$, $\delta_{\rm uncor}$ and $\delta_{\rm cor}$ represent the statistical, uncorrelated systematic and correlated systematic uncertainties, respectively; $\delta_{\rm rel}$, $\delta_{\gamma p}$, $\delta_{\rm had}$ and $\delta_{1}$ to $\delta_{4}$ are the correlated sources of uncertainties arising from the combination procedure. The uncertainties are quoted in percent relative to $\sigma_{r,\rm CC}^{+}$.

HERA combined reduced cross sections $\sigma_{r,\rm CC}^{-}$ for CC $e^{-}p$ scattering at $\sqrt{s} = 318$ GeV; $\delta_{\rm stat}$, $\delta_{\rm uncor}$ and $\delta_{\rm cor}$ represent the statistical, uncorrelated systematic and correlated systematic uncertainties, respectively; $\delta_{\rm rel}$, $\delta_{\gamma p}$, $\delta_{\rm had}$ and $\delta_{1}$ to $\delta_{4}$ are the correlated sources of uncertainties arising from the combination procedure. The uncertainties are quoted in percent relative to $\sigma_{r,\rm CC}^{-}$.

Structure function $xF_3^{\gamma Z}$ for different values of $Q^2$ and $x_{\rm Bj}$.

Structure function $xF_3^{\gamma Z}$ averaged over $Q^2 \ge 1000$ GeV$^2$ at the scale 1000 GeV$^2$.

Distribution of the invariant mass of the N N system.

Distribution of the invariant mass of the N PI system.

Distribution of the invariant mass of the N N PI system.

Distribution of the invariant mass of the N PI PI system.

Distribution of the PI+ angle in the centre-of-mass system.

Distribution of the angle of the N-N system in the centre-of-mass system.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 718.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 723.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 727.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 731.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 735.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 739.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 743.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 748.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 752.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 756.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 760.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 768.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 772.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 777.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 781.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 785.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 789.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 793.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 797.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 801.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 805.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 809.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 814.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 818.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 822.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 826.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 830.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 834.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 838.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 842.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 846.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 850.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 854.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 858.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 862.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 866.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 870.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 874.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 878.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 882.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 886.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 890.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 894.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 898.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 902.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 906.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 910.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.3 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 914.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 918.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 922.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 926.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 930.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 933.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 937.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 941.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 945.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 949.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 953.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 957.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 960.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 964.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 968.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 972.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 976.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 980.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 983.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 987.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 991.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 995.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 998.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1002.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.4 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1006.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1011.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1019.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1026.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1034.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1041.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1048.6 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1055.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1063.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1070.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1077.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1084.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1091.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1098.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1105.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1112.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1119.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1125.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1132.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.5 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1139.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1146.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1152.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1159.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1165.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1172.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1178.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1185.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1191.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1198.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1204.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1210.5 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1216.7 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1222.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1229.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.6 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1235.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1242.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1251.3 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1260.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.8 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1268.9 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1277.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1287.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.7 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1300.0 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.9 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1315.1 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.8 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1335.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.8 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1355.4 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.8 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1376.2 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 4.9 PCT.

Differential cross section for the reaction GAMMA P --> ETA P at a photon energy of 1394.8 MeV. The errors in the table are statistical only and there is an overall systematic uncertainty of 5.0 PCT.

UNNORMALIZED DATA SETS, NOT GIVEN IN THE PAPER.

NORMALIZED LEGENDRE POLYNOMIALS.

No description provided.

BACKWARD ELASTIC CROSS SECTIONS.

No description provided.