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.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles emittedon an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.7 < ETA RAP < 2.02, is subdivided into eight nominally equal bins of 0.16 in pseudo rapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.22 < ET ARAP < 2.5, is subdivided into eight nominally equal bins of 0.16 in pseudo rapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.38 < ET ARAP < 2.34, is subdivided into eight nominally equal bins of 0.16 in pseud orapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.54 < ET ARAP < 2.18, is subdivided into eight nominally equal bins of 0.16 in pseud orapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.7 < ETA RAP < 2.02, is subdivided into eight nominally equal bins of 0.16 in pseudo rapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.22 < ET ARAP < 2.5, is subdivided into eight nominally equal bins of 0.16 in pseudo rapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.38 < ET ARAP < 2.34, is subdivided into eight nominally equal bins of 0.16 in pseud orapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.54 < ET ARAP < 2.18, is subdivided into eight nominally equal bins of 0.16 in pseud orapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.7 < ETA RAP < 2.02, is subdivided into eight nominally equal bins of 0.16 in pseudo rapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.22 < ET ARAP < 2.5, is subdivided into eight nominally equal bins of 0.16 in pseudo rapidity. ET distributions define centrality, tipically by a certain upper perc entile of the distribution. In the table centrality denoted as ZCAL(Zero de gree CALorimeter).

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.38 < ET ARAP < 2.34, is subdivided into eight nominally equal bins of 0.16 in pseud orapidity. ET distributions define centrality, tipically by a certain upper perc entile of the distribution. In the table centrality denoted as ZCAL(Zero de gree CALorimeter).

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.54 < ET ARAP < 2.18, is subdivided into eight nominally equal bins of 0.16 in pseud orapidity. ET distributions define centrality, tipically by a certain upper perc entile of the distribution. In the table centrality denoted as ZCAL(Zero de gree CALorimeter).

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.7 < ETA RAP < 2.02, is subdivided into eight nominally equal bins of 0.16 in pseudo rapidity. ET distributions define centrality, tipically by a certain upper perc entile of the distribution. In the table centrality denoted as ZCAL(Zero de gree CALorimeter).

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.22 < ET ARAP < 2.5, is subdivided into eight nominally equal bins of 0.16 in pseudo rapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.38 < ET ARAP < 2.34, is subdivided into eight nominally equal bins of 0.16 in pseud orapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.54 < ET ARAP < 2.18, is subdivided into eight nominally equal bins of 0.16 in pseud orapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.7 < ETA RAP < 2.02, is subdivided into eight nominally equal bins of 0.16 in pseudo rapidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.22 ETAR AP < 2.50, is subdivided into eight nominally equal bins of 0.16 in pseudor apidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.38 ETAR AP < 2.34, is subdivided into eight nominally equal bins of 0.16 in pseudor apidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.54 ETAR AP < 2.18, is subdivided into eight nominally equal bins of 0.16 in pseudor apidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.7 ETARA P < 2.02, is subdivided into eight nominally equal bins of 0.16 in pseudora pidity.

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.22 ETAR AP < 2.50, is subdivided into eight nominally equal bins of 0.16 in pseudor apidity. ET distributions define centrality, tipically by a certain upper perc entile of the distribution. In the table centrality denoted as ZCAL(Zero de gree CALorimeter).

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.38 ETAR AP < 2.34, is subdivided into eight nominally equal bins of 0.16 in pseudor apidity. ET distributions define centrality, tipically by a certain upper perc entile of the distribution. In the table centrality denoted as ZCAL(Zero de gree CALorimeter).

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.54 ETAR AP < 2.18, is subdivided into eight nominally equal bins of 0.16 in pseudor apidity. ET distributions define centrality, tipically by a certain upper perc entile of the distribution. In the table centrality denoted as ZCAL(Zero de gree CALorimeter).

ET is defined as the sum of Ei*Sin(THETAi) taken over all particles em itted on an event. The full ETARAP acceptance of the half-azimuth calorimeter, 1.7 ETARA P < 2.02, is subdivided into eight nominally equal bins of 0.16 in pseudora pidity. ET distributions define centrality, tipically by a certain upper perc entile of the distribution. In the table centrality denoted as ZCAL(Zero de gree CALorimeter).