Bin averaged hadron level differential cross section for diffractive dijet production as a function of X(C=POMERON). The first systematic error is the uncorrelated and the second the correlated uncertainty.

Bin averaged hadron level differential cross section for diffractive dijet production as a function of Z(C=POMERON). The first systematic error is the uncorrelated and the second the correlated uncertainty.

Bin averaged hadron level differential cross section for diffractive dijet production as a function of the average pseudorapidity of the dijet system. The first systematic error is the uncorrelated and the second the correlated uncertainty.

Bin averaged hadron level differential cross section for diffractive dijet production as a function of the absolute difference of the pseudorapidities of the two jets. The first systematic error is the uncorrelated and the second the correlated uncertainty.

Bin averaged hadron level differential cross section for diffractive dijet production as a function of W. The first systematic error is the uncorrelated and the second the correlated uncertainty.

Bin averaged hadron level differential cross section for diffractive dijet production as a function of the dijet invariant mass. The first systematic error is the uncorrelated and the second the correlated uncertainty.

Bin averaged hadron level differential cross section for diffractive dijet production as a function of mass of the diffractive system. The first systematic error is the uncorrelated and the second the correlated uncertainty.

Bin averaged hadron level double-differential cross section for diffractive dijet production as a function of X(GAMMA) for 3 ranges of ET of jet 1. The first systematic error is the uncorrelated and the second the correlated uncertainty.

Bin averaged hadron level double-differential cross section for diffractive dijet production as a function of Z(POMERON) for 2 ranges of X(GAMMA). The first systematic error is the uncorrelated and the second the correlated uncertainty.

Ratios of the diffractive to the inclusive single-differential hadron level dijet cross sections as a function of X(C=GAMMA). The first systematic error is the uncorrelated and the second the correlated uncertainty.

Ratios of the diffractive to the inclusive single-differential hadron level dijet cross sections as a function of ET of jet 1. The first systematic error is the uncorrelated and the second the correlated uncertainty.

Ratios of the diffractive to the inclusive single-differential hadron level dijet cross sections as a function of the average pseudorapidity of the dijet system. The first systematic error is the uncorrelated and the second the correlated uncertainty.

Ratios of the diffractive to the inclusive single-differential hadron level dijet cross sections as a function of the absolute difference in the pseudorapidities of the 2 jets. The first systematic error is the uncorrelated and the second the correlated uncertainty.

Ratios of the diffractive to the inclusive single-differential hadron level dijet cross sections as a function of the invariant mass of the dijet system. The first systematic error is the uncorrelated and the second the correlated uncertainty.

Ratios of the diffractive to the inclusive single-differential hadron level dijet cross sections as a function of W. The first systematic error is the uncorrelated and the second the correlated uncertainty.

Bin averaged hadron level differential cross sections as a function of the variable $z_{I\!\!P}$ for diffractive dijet DIS. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations and the radiative corrections ($1+\delta_{\text{rad}}$) are also listed. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential cross sections as a function of the variable $x_{I\!\!P}$ for diffractive dijet DIS. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations and the radiative corrections ($1+\delta_{\text{rad}}$) are also listed. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential cross sections as a function of the variable $y$ for diffractive dijet DIS. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations and the radiative corrections ($1+\delta_{\text{rad}}$) are also listed. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential cross sections as a function of the variable $Q^2$ for diffractive dijet DIS. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations and the radiative corrections ($1+\delta_{\text{rad}}$) are also listed. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential cross sections for diffractive dijet DIS as a function of the variable $E_T^{*\text{jet1}}$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations and the the radiative corrections ($1+\delta_{\text{rad}}$) are also listed. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential cross sections for diffractive dijet DIS as a function of the variable $M_X$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations and the the radiative corrections ($1+\delta_{\text{rad}}$) are also listed. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential cross sections for diffractive dijet DIS as a function of the variable $\vert\Delta\eta^{\text{jets}}\vert$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations and the the radiative corrections ($1+\delta_{\text{rad}}$) are also listed. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential cross sections for diffractive dijet DIS as a function of the variable $\langle\eta^{\text{jets}}\rangle$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations and the the radiative corrections ($1+\delta_{\text{rad}}$) are also listed. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential diffractive dijet $ep$ cross sections as a function of the variable $z_{I\!\!P}$ for the dijet photoproduction kinematic range. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential diffractive dijet $ep$ cross sections as a function of the variable $x_{I\!\!P}$ for the dijet photoproduction kinematic range. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential diffractive dijet $ep$ cross sections as a function of the variable $y$ for the dijet photoproduction kinematic range. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential diffractive dijet $ep$ cross sections as a function of the variable $x_\gamma$ for the dijet photoproduction kinematic range. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential diffractive dijet $ep$ cross sections in the photoproduction kinematic range as a function of the variable $E_T^{*\text{jet1}}$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential diffractive dijet $ep$ cross sections in the photoproduction kinematic range as a function of the variable $M_X$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential diffractive dijet $ep$ cross sections in the photoproduction kinematic range as a function of the variable $\vert\Delta\eta^{\text{jets}}\vert$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given. The overall normalisation uncertainty of $6\%$ is not included in the table.

Bin averaged hadron level differential diffractive dijet $ep$ cross sections in the photoproduction kinematic range as a function of the variable $\langle\eta^{\text{jets}}\rangle$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given. The overall normalisation uncertainty of $6\%$ is not included in the table.

Ratios of differential diffractive dijet $ep$ cross sections, measured in photoproduction, to measurements in DIS as a function of the variable $\vert\Delta\eta^{\text{jets}}\vert$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given.

Ratios of differential diffractive dijet $ep$ cross sections, measured in photoproduction, to measurements in DIS as a function of the variable $y$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given.

Ratios of differential diffractive dijet $ep$ cross sections, measured in photoproduction, to measurements in DIS as a function of the variable $z_{I\!\!P}$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given.

Ratios of differential diffractive dijet $ep$ cross sections, measured in photoproduction, to measurements in DIS as a function of the variable $E_T^{*\text{jet1}}$. The hadronisation correction factors ($1+\delta_{\text{hadr}}$) applied to the NLO calculations are given.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of the invariant mass of the diffractive system (X).

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of W.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of X(NAME=POMERON).

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of BETA=X/X(NAME=POMERON).

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of Z(NAME=POMERON,C=JETS), the fraction of the hadronic final state energy of the DD system which is contained in the two jets.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of X(NAME=GAMMA,C=JETS), the fraction ofthe photon momentum which enters the hard scattering.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of E(NAME=REM,C=GAMMA), the energy sum of all final state hadrons in the photon hemisphere (ETARAP<0) which lie outside the two hightest PT(RF=CM) jet cones.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of Z(NAME=POMERON,C=JETS), for the LOG10(X(NAME=POMERON)) range -1.5 TO -1.3.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of Z(NAME=POMERON,C=JETS), for the LOG10(X(NAME=POMERON)) range -1.75 TO -1.5.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of Z(NAME=POMERON,C=JETS), for the LOG10(X(NAME=POMERON)) range -2.0 TO -1.75.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of Z(NAME=POMERON,C=JETS), for the LOG10(X(NAME=POMERON)) range < -2.0.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of Z(NAME=POMERON,C=JETS), for the Q**2 + PT**2 range 20 TO 35 GEV**2.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of Z(NAME=POMERON,C=JETS), for the Q**2 + PT**2 range 35 TO 45 GEV**2.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of Z(NAME=POMERON,C=JETS), for the Q**2 + PT**2 range 45 TO 60 GEV**2.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of Z(NAME=POMERON,C=JETS), for the Q**2 + PT**2 range > 60 GEV**2.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of Q**2 for the restricted interval X(NAME=POMERON) < 0.01.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of the average transverse momentum of the two jets in the c.m.frame for the restricted interval X(NAME=POMERON) < 0.01.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of Z(NAME=POMERON,C=JETS), the fraction of the hadronic final state energy of the DD system which is contained in the two jets for the restricted interval X(NAME=POMERON) < 0.01.

Average values, over the specified interval, of the differential hadron level dijet cross section as a function of PT(NAME=REM,C=POMERON), the PT sum of all final state hadrons in the pomeron hemisphere (ETARAP>0) which lie outside the two hightest PT(RF=CM) jet cones.

Average values, over the specified interval, of the differential hadron level three-jet cross section as a function of the invariant mass of the 3 jet system.

Average values, over the specified interval, of the differential hadron level three-jet cross section as a function of Z(NAME=POMERON,C=3-JETS).

Differential cross section for diffractive D*+- production in the DIS region as a function of the inelasticity Y.

Differential cross section for diffractive D*+- production in the DIS region as a function of Q**2.

Differential cross section for diffractive D*+- production in the DIS region as a function of X(NAME=POMERON).

Differential cross section for diffractive D*+- production in the DIS region as a function of Z(NAME=POMERON).

Differential cross section for diffractive D*+- production in the DIS region as a function of BETA.

Differential cross section for diffractive D*+- production in the Photoproduction region as a function of PT of the D*.

Differential cross section for diffractive D*+- production in the Photoproduction region as a function of ETARAP of the D*.

Differential cross section for diffractive D*+- production in the Photoproduction region as a function of the inlasticity Y.

Differential cross section for diffractive D*+- production in the Photoproduction region as a function of X(NAME=POMERON).

Differential cross section for diffractive D*+- production in the Photoproduction region as a function of Z(NAME=POMERON).

Differential cross section for diffractive D*+- production in the DIS region as a function of PT of the D* for the region X(NAME=POMERON) < 0.01.

Differential cross section for diffractive D*+- production in the DIS region as a function of ETARAP of the D*.for the region X(NAME=POMERON) < 0.01.

Differential cross section for diffractive D*+- production in the DIS region as a function of X(NAME=POMERON) for the region X(NAME=POMERON) < 0.01.

Differential cross section for diffractive D*+- production in the DIS region as a function of Z(NAME=POMERON) for the region X(NAME=POMERON) < 0.01.

Reduced cross section for diffractive D*+- production measured in the DIS region from the displaced track analysis.

Differential cross section for diffractive D*+- production measured in the Q**2 region 15 to 100 GeV**2 region as a function of M(X).

Fractional charm contribution to the diffractive cross section obtained from the displaced track method.

Normalised distribution in M(P=4_5) for NC and CC dijet events. M(P=4_5) is the dijet mass.

Normalised distribution in ZP for NC and CC dijet events. ZP corresponds to 0.5*MIN(1-COS(THETA*)) summed over the two jets. THETA* is the polar angle of each parton in the c.m. system of the virtual boson and the incoming parton.

Normalised distribution in XP for NC and CC dijet events. XP is the ratio X/PSI where PSI is the fraction of the protons for momentacarried by the parton entering the hard scattering process.

Normalised distribution in ET(C=FOWARD) for NC and CC dijet events. ET(C=FORWARD) is the transverse energy of the most (non-remnant) forward jet.

Normalised distribution in THETA(C=FORWARD) for NC and CC dijet events. THETA(C=FORWARD) is the polar angle of the most (non-remnant) forward jet.

Normalised distribution in dijet mass for CC and NC events with Q**2 > 5000GeV**2.

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.

Values of D(SIG)/DABS(COS(THETA)) for the data. The error given on each value is the total uncertainty.

Differential ep cross section for dijet production as a function of the average pseudorapidity the two jets in two transverse energy regions and in the Y region 0.1 to 0.5.

Differential ep cross section for dijet production as a function of the average pseudorapidity the two jets in two transverse energy regions and in the Y region 0.5 to 0.9.

Differential ep cross section for dijet production as a function of the photon momentum fraction X(C=GAMMA) in two regions of proton fractional momentum XP.

Differential ep cross section for dijet production as a function of the proton momentum fraction XP in two regions of photon fractional momentum X(C=GAMMA).

Differential ep cross section for dijet production as a function of the photon momentum fraction X(C=GAMMA) in two regions maximum jet transverseenergy.

Differential ep cross section for dijet production as a function of COS(THETA*) in two regions of fractional photon momentum fraction X(C=GAMMA).

Differential ep cross section for dijet production as a function of COS(THETA*) for dijet masses > 65 GeV in two regions of fractional photon momentum fraction X(C=GAMMA).