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 . We critically investigate if and 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 and are set to and , where and are universal quantities related to the QCD stable spectrum, while (treated as an extra free parameter) is related to the asymptotic value of the ratio . Different possible scenarios are then considered and compared.
- Received 6 March 2017
DOI:https://doi.org/10.1103/PhysRevD.96.034015
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