High-energy proton-proton forward scattering and derivative analyticity relations
AUTOR(ES)
Ávila, R. F., Luna, E. G. S., Menon, M. J.
FONTE
Brazilian Journal of Physics
DATA DE PUBLICAÇÃO
2001-12
RESUMO
We present the results of several parametrizations to two different ensemble of data on pp total cross sections (s
) at the highest center-of-mass energies (including cosmic-ray information). The results are statistically consistent with two distinct scenarios at high energies. From one ensemble the prediction for the LHC (
= 14 TeV) iss = 113 ± 5 mb and from the other, s = 140 ± 7 mb. From each parametrization, and making use of derivative analyticity relations (DAR), we determine rho(s) (ratio between the forward real and imaginary parts of the elastic scattering amplitude). A discussion on the optimization of the DAR in terms of a free parameter is also presented. In all cases good descriptions of the experimental data are obtained.
