| Texto completo | |
| Autor(es): |
Giordano, M.
;
Meggiolaro, E.
;
Silva, P. V. R. G.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 96, n. 3, p. 16-pg., 2017-08-21. |
| Resumo | |
In the present investigation we study the leading and subleading high-energy behavior of hadron-hadron total cross sections using a best-fit analysis of hadronic scattering data. The parametrization used for the hadron-hadron total cross sections at high energy is inspired by recent results obtained by Giordano and Meggiolaro [J. High Energy Phys. 03 (2014) 002] using a nonperturbative approach in the framework of QCD, and it reads sigma(tot) similar to Bln(2)s + Cln s ln ln s. We critically investigate if B and C can be obtained by means of best-fits to data for proton-proton and antiproton-proton scattering, including recent data obtained at the LHC, and also to data for other meson-baryon and baryon-baryon scattering processes. In particular, following the above-mentioned nonperturbative QCD approach, we also consider fits where the parameters B and C are set to B = kappa B-th and C = kappa C-th, where B-th and C-th are universal quantities related to the QCD stable spectrum, while kappa (treated as an extra free parameter) is related to the asymptotic value of the ratio sigma(el)/sigma(tot). Different possible scenarios are then considered and compared. (AU) | |
| Processo FAPESP: | 13/27060-3 - Espalhamento Elástico de Hádrons em Altas Energias: Estudos sobre os Problemas Direto e Inverso |
| Beneficiário: | Paulo Victor Recchia Gomes da Silva |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 15/21855-0 - Espalhamento elástico e seções de choque total em altas energias: aspectos não perturbativos da QCD |
| Beneficiário: | Paulo Victor Recchia Gomes da Silva |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |