Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/344722
Type: Artigo
Title: Investigation of the leading and subleading high-energy behavior of hadron-hadron total cross sections using a best-fit analysis of hadronic scattering data
Author: Giordano, M.
Meggiolaro, E.
Silva, P. V. R. G.
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.
Subject: Seção de choque (Física nuclear)
Hádrons
Cromodinâmica quântica
Cross sections (Nuclear physics)
Hadrons
Quantum chromodynamics
Country: Estados Unidos
Editor: American Physical Society
Rights: aberto
Identifier DOI: 10.1103/PhysRevD.96.034015
Address: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.034015
Date Issue: 2017
Appears in Collections:IFGW - Artigos e Outros Documentos

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