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Type: Artigo de periódico
Title: High-energy proton-proton forward scattering and derivative analyticity relations
Author: Ávila, R. F.
Luna, E. G. S.
Menon, M. J.
Abstract: We present the results of several parametrizations to two different ensemble of data on pp total cross sections (s<img SRC=http:/img/fbpe/bjp/v31n4/07eq01.gif >) 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 (<img SRC=http:/img/fbpe/bjp/v31n4/07eq02.gif> = 14 TeV) iss<img SRC=http:/img/fbpe/bjp/v31n4/07eq01.gif > = 113 &plusmn; 5 mb and from the other, s<img SRC=http:/img/fbpe/bjp/v31n4/07eq01.gif> = 140 &plusmn; 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.
Editor: Sociedade Brasileira de Física
Rights: aberto
Identifier DOI: 10.1590/S0103-97332001000400007
Date Issue: 1-Dec-2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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