Forward elastic scattering: dynamical gluon mass and semihard interactions

Autor: M. Broilo, D. A. Fagundes, E. G. S. Luna, M. J. Menon
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: European Physical Journal C: Particles and Fields, Vol 79, Iss 12, Pp 1-15 (2019)
Druh dokumentu: article
ISSN: 1434-6044
1434-6052
DOI: 10.1140/epjc/s10052-019-7545-2
Popis: Abstract The role of low-x parton dynamics in dictating the high-energy behavior of forward scattering observables at LHC energies is investigated using a QCD-based model with even-under-crossing amplitude dominance at high-energies. We explore the effects of different sets of pre- and post-LHC fine-tuned parton distributions on the forward quantities $$\sigma _{tot}$$ σtot and $$\rho $$ ρ , from pp and $${\bar{p}}p$$ p¯p scattering in the interval 10 GeV–13 TeV. We also investigate the role of the leading soft contribution, the low-energy cuttoff, and the energy dependence of the semihard form factor on these observables. We show that in all cases investigated the highly restrictive data on $$\rho $$ ρ parameter at $$\sqrt{s}=13$$ s=13 TeV indicate that a crossing-odd component may play a crucial role in forward elastic scattering at the highest energies, namely the Odderon contribution.
Databáze: Directory of Open Access Journals
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