Analytical representation for pp elastic scattering at 7 TeV

A precise analysis is performed of the recent pp elastic data at 7 TeV in terms of its real and imaginary amplitudes, that are fully disentangled, consistently with dispersion relations for amplitudes and for slopes. Real and imaginary slopes BR and BI, treated as independent quantities, influence the whole t-range and the determination of the total cross section σ. The treatment includes extension to the universal perturbative tail at large |t|. Consistency is obtained in the values of σ, ratio ρ, BR and BI determined in forward and full-t approaches.