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Type: Artigo de periódico
Title: High-energy parton-parton amplitudes from lattice QCD and the stochastic vacuum model
Author: Martini, AF
Menon, MJ
Thober, DS
Abstract: Making use of the gluon gauge-invariant two-point correlation function, recently determined by numerical simulation on the lattice in the quenched approximation and the stochastic vacuum model, we calculate the elementary (parton-parton) amplitudes in both impact-parameter and momentum transfer spaces. The results are compared with those obtained from the Kramer and Dosch ansatz for the correlators. Our main conclusion is that the divergences in the correlations functions suggested by the lattice calculations do not affect substantially the elementary amplitudes. Phenomenological and semiempirical information presently available on elementary amplitudes is also referred to and is critically discussed in connection with some theoretical issues.
Country: EUA
Editor: American Physical Soc
Citation: Physical Review D. American Physical Soc, v. 57, n. 5, n. 3026, n. 3035, 1998.
Rights: aberto
Identifier DOI: 10.1103/PhysRevD.57.3026
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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