Fit of elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\pi^{+}\pi^{-}$ photoproduction off protons with a Soeding-inspired analytic function --- statistical correlations only. Only one half of the (symmetric) matrix is stored.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\pi^{+}\pi^{-}$ photoproduction off protons, differential in the dipion mass and in bins of $W$. The tabulated cross sections are $\gamma p$ cross sections but can be converted to $ep$ cross sections using the effective photon flux $\Phi_{\gamma/e}$.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\pi^{+}\pi^{-}$ photoproduction off protons, differential in the dipion mass and in bins of $W$ --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction off protons, in bins of the photon-proton energy $W$. The cross section is defined as the integral of the relativistic Breit Wigner resonance in the dipion mass over the range $2m_\pi<m_{\pi\pi}<1.53$ GeV. The tabulated cross sections are $\gamma p$ cross sections but can be converted to $ep$ cross sections using the effective photon flux $\Phi_{\gamma/e}$.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction off protons in bins of the photon-proton energy $W$ --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

Fit of elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction cross sections off protons as a function of energy. Parameters with subscript "el" and "pd" correspond to elastic and proton-dissociative cross sections, respectively.

Fit of elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction cross sections off protons as a function of energy --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

Fit of elastic $\rho^0(770)$ photoproduction cross section off protons as a function of energy (various experiments)

Fit of elastic $\rho^0(770)$ photoproduction cross sections off protons as a function of energy (various experiments) --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\pi^{+}\pi^{-}$ photoproduction cross section off protons, double-differential in the dipion mass and the momentum transfer $\vert t\vert$. The tabulated cross sections are $\gamma p$ cross sections but can be converted to $ep$ cross sections using the effective photon flux $\Phi_{\gamma/e}$.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\pi^{+}\pi^{-}$ photoproduction cross section off protons, double-differential in the dipion mass and the momentum transfer $\vert t\vert$ --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction off protons, single-differential in the momentum transfer $\vert t\vert$. The cross section is defined as the integral of the relativistic Breit Wigner resonance in the dipion mass over the range $2m_\pi<m_{\pi\pi}<1.53$ GeV. The tabulated cross sections are $\gamma p$ cross sections but can be converted to $ep$ cross sections using the effective photon flux $\Phi_{\gamma/e}$.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction off protons, single differential in the momentum transfer $\vert t\vert$ --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

Fit of elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction single-differential cross sections off protons as a function of momentum transfer $t$. Parameters with subscript "el" and "pd" correspond to elastic and proton-dissociative cross sections, respectively.

Fit of elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction single-differential cross sections off protons as a function of momentum transfer $t$ --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\pi^{+}\pi^{-}$ photoproduction double-differenial cross section off protons, as a function of the dipion mass and the momentum transfer $\vert t\vert$, in bins of the photon-proton energy $W$ The tabulated cross sections are $\gamma p$ cross sections but can be converted to $ep$ cross sections using the effective photon flux $\Phi_{\gamma/e}$.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\pi^{+}\pi^{-}$ photoproduction double-differenial cross section off protons, as a function of the dipion mass and the momentum transfer $\vert t\vert$, in bins of the photon-proton energy $W$ --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction off protons, single-differential in the momentum transfer $\vert t\vert$, in bins of the photon-proton energy $W$. The cross section is defined as the integral of the relativistic Breit Wigner resonance in the dipion mass over the range $2m_\pi<m_{\pi\pi}<1.53$ GeV. The tabulated cross sections are $\gamma p$ cross sections but can be converted to $ep$ cross sections using the effective photon flux $\Phi_{\gamma/e}$.

Elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction cross section off protons, single differential in the momentum transfer $\vert t\vert$ and in bins of the photon-proton energy $W$ --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

Regge fit of elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction single-differential cross sections off protons as a function of momentum transfer $t$ and photon-proton energy $W$. Parameters with subscript "el" and "pd" correspond to elastic and proton-dissociative cross sections, respectively.

Regge fit of elastic ($m_Y=m_p$) and proton-dissociative ($1<m_Y<10$ GeV) $\rho^0(770)$ photoproduction single-differential cross sections off protons as a function of momentum transfer $t$ and photon-proton energy $W$ --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

Fit of $b$-slopes in elastic ($m_Y=m_p$) $\rho^0(770)$ photoproduction single-differential cross sections off protons as a function of momentum transfer $t$ in bins of photon-proton energy $W$.

Fit of $b$-slopes in elastic ($m_Y=m_p$) $\rho^0(770)$ photoproduction single-differential cross sections off protons as a function of momentum transfer $t$ in bins of photon-proton energy $W$ --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

Fit of Pomeron trajectories in elastic ($m_Y=m_p$) $\rho^0(770)$ photoproduction single-differential cross sections off protons as a function of momentum transfer $t$ in bins of photon-proton energy $W$.

Fit of Pomeron trajectories in elastic ($m_Y=m_p$) $\rho^0(770)$ photoproduction single-differential cross sections off protons as a function of momentum transfer $t$ in bins of photon-proton energy $W$ --- statistical correlations coefficients $\rho_{ij}$ only. Only one half of the (symmetric) matrix is stored. Bins are identified by their global bin number.

The fitted exponential slope of the T distribution as a function of X(NAME=POMERON).

The fitted exponential slope of the T distribution as a function of X(NAME=POMERON).

The fitted exponential slope of the T distribution as a function of X(NAME=POMERON).

The fitted exponential slope of the T distribution as a function of X(NAME=POMERON).

The fitted exponential slope of the T distribution as a function of X(NAME=POMERON).

The fitted exponential slope of the T distribution as a function of X(NAME=POMERON).

The fitted exponential slope of the T distribution as a function of X(NAME=POMERON).

The differential cross section as a function of PHI, the angle between the positron scattering plane and the proton scattering plane for the LRG and the LPS data samples.

The azimuthal asymmetries ALT and ATT as a function of X(NAME=POMERON).

The azimuthal asymmetries ALT and ATT as a function of BETA.

The azimuthal asymmetries ALT and ATT as a function of ABS(T).

The azimuthal asymmetries ALT and ATT as a function of Q**2.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 2.5 GeV**2 and ABS(T) = 0.09 to 0.19 GeV**2 for M(X) values of 3, 7, 15 and 30 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 3.9 GeV**2 and ABS(T) = 0.09 to 0.19 GeV**2 for M(X) values of 3, 7, 15 and 30 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 7.1 GeV**2 and ABS(T) = 0.09 to 0.19 GeV**2 for M(X) values of 3, 7, 15 and 30 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 14 GeV**2 and ABS(T) = 0.09 to 0.19 GeV**2 for M(X) values of 3, 7, 15 and 30 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 40 GeV**2 and ABS(T) = 0.09 to 0.19 GeV**2 for M(X) values of 3, 7, 15 and 30 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 2.5 GeV**2 and ABS(T) = 0.19 to 0.55 GeV**2 for M(X) values of 3, 7, 15 and 30 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 3.9 GeV**2 and ABS(T) = 0.19 to 0.55 GeV**2 for M(X) values of 3, 7, 15 and 30 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 7.1 GeV**2 and ABS(T) = 0.19 to 0.55 GeV**2 for M(X) values of 3, 7, 15 and 30 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 14 GeV**2 and ABS(T) = 0.19 to 0.55 GeV**2 for M(X) values of 3, 7, 15 and 30 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 40 GeV**2 and ABS(T) = 0.19 to 0.55 GeV**2 for M(X) values of 3, 7, 15 and 30 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 2.5 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 3.9 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 7.1 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 14 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LPS data as a function of X(NAME=POMERON) for Q**2 = 40 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 2.5 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 3.5 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 4.5 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 5.5 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 6.5 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 8.5 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 12 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 16 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 22 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 30 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 40 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 50 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 65 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 85 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 110 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 140 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 185 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

The reduced diffractive cross sections obtained from the LRG data as a function of X(NAME=POMERON) for Q**2 = 255 GeV**2 and M(X) values of 3, 6, 11, 19 and 32 GeV.

Acceptance corrected COS(THETA(XYZ=SH)) distribution for exclusive J/PSI photoproduction muon decay data. THETA(XYZ=SH) is the polar angle of the positively charged lepton in the helicity frame.

Acceptance corrected COS(THETA(XYZ=SH)) distribution for exclusive J/PSI photoproduction electron decay data. THETA(XYZ=SH) is the polar angle of the positively charged lepton in the helicity frame.

Acceptance corrected PHI(XYZ=SH)) distribution for exclusive J/PSI photoproduction muon decay data. PHI(XYZ=SH) is the azimuthal angle of the positively charged lepton in the helicity frame.

Acceptance corrected PHI(XYZ=SH)) distribution for exclusive J/PSI photoproduction electron decay data. PHI(XYZ=SH) is the azimuthal angle of the positively charged lepton in the helicity frame.

Spin density matrix elements from fits to the angular distributions.

Differential DSIG/DT distribution in various W bins for data from J/PSI muon decay.

Differential DSIG/DT distribution in various W bins for data from J/PSI electron decay.

Slope of the Pomeron trajectory obtained from fit to the DSIG/DT distribution of the form W**(4*SLOPE-1) from the J/PSI muon decay data.

Slope of the Pomeron trajectory obtained from fit to the DSIG/DT distribution of the form W**(4*SLOPE-1) from the J/PSI electron decay data.

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OPTICAL THEOREM USED TO DEDUCE CROSS SECTIONS.

OPTICAL THEOREM USED TO DEDUCE CROSS SECTIONS.

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LOCAL SLOPE PARAMETERS.

LOCAL SLOPE PARAMETERS.

LOCAL SLOPE PARAMETERS.

LOCAL SLOPE PARAMETERS.

TOTAL CROSS SECTION IS CALCULATED BY FITTING AN EXPONENTIAL QUADRATIC IN T TO THE 200 TO 400 GEV DATA SET TO EVALUATE THE OPTICAL POINT AND ASSUMING THE RATIO OF THE REAL TO IMAGINARY PART OF THE HADRONIC AMPLITUDE IS ZERO. ELASTIC PART TAKES INTO ACCOUNT OTHER MEASUREMENTS BY DE HAVEN ET AL., (NP B148, 1) FOR HIGHER T.

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THESE RESULTS ON RE(AMP)/IM(AMP) AND SLOPE FROM EXPERIMENTS WA9 AND N78 HAVE BEEN PRE VIOUSLY PRESENTED IN BURQ ET AL., PL 77B/ 438/78, PL 109B/111/82, PL 109B/124/82,AND ARE IDENTICAL EXCEPT FOR THE PI- P SLOPE PARAMETER FROM WA9 (PL 77B/43/78) WHICH HAS BEEN CHANGED BY -0.5 DUE TO THE INTRODUCTION OF A CORRECTION FOR BREMSSTRAHLING AND OF AN EFFICIENCY CORRECTION AT BIG T VALUES, NEGLECTED IN THE PREVIOUS ANALYSIS. WE PRODUCE ONLY THAT PART OF THE TABLE HERE.

The differential cross section as a function of T for elastic P P scattering at a centre of mass energy of 52.8 GeV.

The differential cross section as a function of T for elastic P P scattering at a centre of mass energy of 62.5 GeV.

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