| Full text | |
| Author(s): |
Giordano, M.
;
Meggiolaro, E.
;
Silva, P. V. R. G.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW D; v. 96, n. 3, p. 16-pg., 2017-08-21. |
| Abstract | |
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) | |
| FAPESP's process: | 13/27060-3 - High-Energy Elastic Hadron Scattering: Studies on the Direct and Inverse Problems |
| Grantee: | Paulo Victor Recchia Gomes da Silva |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 15/21855-0 - High-energy elastic scattering and total cross sections: nonperturbative QCD aspects |
| Grantee: | Paulo Victor Recchia Gomes da Silva |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |