An analysis on extrema and constrained bounds for the soft pomeron intercept
| Autor: | J. Montanha, Márcio José Menon, E. G. S. Luna |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Quark
Physics Nuclear and High Energy Physics Particle physics Large Hadron Collider Meson Scattering High Energy Physics::Phenomenology FOS: Physical sciences Nuclear physics Baryon High Energy Physics - Phenomenology Pomeron High Energy Physics - Phenomenology (hep-ph) Factorization High Energy Physics::Experiment Parametrization |
| Zdroj: | Nuclear Physics A. 745:104-120 |
| ISSN: | 0375-9474 |
| DOI: | 10.1016/j.nuclphysa.2004.09.004 |
| Popis: | We investigate some aspects and consequences of the extrema bounds for the soft Pomeron intercept, recently determined by means of global fits to $pp$ and $\bar{p}p$ total cross section data at both accelerator and cosmic-ray energy regions (scattering data). We also examine the effects of the secondary Reggeons by introducing fitted trajectories from Chew-Frautschi plots (spectroscopy data) and determining new constrained bounds for the Pomeron intercept. In both cases we extend the analysis to $baryon-p$, $meson-p$, $baryon-n$, $meson-n$, $gamma-p$ and $gamma-gamma$ scattering, presenting tests on factorization and quark counting rules. We show that in all the cases investigated, the bounds lead to good descriptions of the bulk of experimental data on the total cross sections, but with different extrapolations to higher energies. Our main conclusion is that the experimental information presently available on the above quantities is not sensitive to an uncertainty of 2% in the value of the soft Pomeron intercept. At 14 TeV (CERN LHC) the extrema and constrained bounds allow to infer $\sigma_{tot}$ = 114 $\pm$ 25 mb and 105 $\pm$ 10 mb, respectively. Comment: 20 pages, 5 eps-figures, elsart.cls (included), submitted to Nucl. Phys. A |
| Databáze: | OpenAIRE |
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