Further evidence for zero crossing on the three gluon vertex
2016; American Physical Society; Volume: 94; Issue: 7 Linguagem: Inglês
10.1103/physrevd.94.074502
ISSN2470-0037
AutoresAnthony G. Duarte, Orlando Oliveira, Paulo J. Silva,
Tópico(s)High-Energy Particle Collisions Research
ResumoThe three gluon one particle irreducible function is investigated using lattice QCD simulations over a large region of momentum in the Landau gauge for four-dimensional pure Yang-Mills equations and the SU(3) gauge group. The results favor a zero crossing of the gluon form factor for momenta in the range 220--260 MeV. This zero crossing is required to happen in order to have a properly defined set of Dyson-Schwinger equations. It is also shown that in the high momentum region the lattice results are compatible with the predictions of renormalization group improved perturbation theory.
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