Comparison of quasifree (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mi>p</mml:mi></mml:math>) with (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>pn</mml:mi></mml:math>) scattering as a check of the impulse approx

Maris, Th.A.J.; Teodoro, M.R.; Veit, Eliane Ângela

doi:10.1103/physrevc.20.446

Cited by 242 publications

(745 citation statements)

References 18 publications

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“…The details of the model can be found in Refs. [2,3]. It leads to chiral symmetry breaking and confinement; furthermore, at large momenta, our effective interaction reduces to the perturbative running coupling and thus preserves the one-loop renormalization group behavior of QCD and reproduces perturbative results in the ultraviolet region.…”

Section: Dyson-schwinger Equationsmentioning

confidence: 76%

“…The Dyson-Schwinger equations [DSEs] form a useful tool for nonperturbative QCD modeling of hadrons and their interactions. They have been successfully applied to calculate properties of light vector and pseudoscalar mesons [1,2], as described elsewhere in these proceedings [3]. The dressed-quark propagator, as obtained from its DSE, together with the Bethe-Salpeter amplitude as obtained from the Bethe-Salpeter equation [BSE] for qq bound states, form essential ingredients for calculations of meson couplings and form factors [4].…”

Section: Dyson-schwinger Equationsmentioning

confidence: 99%

“…Here, we use a solution of the DSE for the quark-photon vertex under the same truncation as used in Refs. [1][2][3] for light mesons.…”

Section: Dyson-schwinger Equationsmentioning

confidence: 99%

“…It leads to chiral symmetry breaking and confinement; furthermore, at large momenta, our effective interaction reduces to the perturbative running coupling and thus preserves the one-loop renormalization group behavior of QCD and reproduces perturbative results in the ultraviolet region. The model gives a good description of the π, ρ, K, K ⋆ and φ masses and decay constants [2,3].…”

Section: Dyson-schwinger Equationsmentioning

confidence: 99%

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The quark-photon vertex and meson electromagnetic form factors

Maris¹,

Tandy

2000

Nuclear Physics A

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The ladder Bethe-Salpeter solution for the dressed photon-quark vertex is used to study the low-momentum behavior of the pion electromagnetic and the $\gamma^\star \pi^0 \gamma$ transition form factors. With model parameters previously fixed by light meson masses and decay constants, the low-momentum slope of both form factors is in excellent agreement with the data. In comparison, the often-used Ball-Chiu Ansatz for the vertex is found to be deficient; less than half of the obtained $r_\pi^2$ is generated by that Ansatz while the remainder of the charge radius could be attributed to the tail of the $\rho$ resonance.Comment: 4 pages, 2 figures, uses espcrc1.sty, talk presented at PANIC99, Uppsala, Swede

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Section: Dyson-schwinger Equationsmentioning

confidence: 76%

Section: Dyson-schwinger Equationsmentioning

confidence: 99%

“…Here, we use a solution of the DSE for the quark-photon vertex under the same truncation as used in Refs. [1][2][3] for light mesons.…”

Section: Dyson-schwinger Equationsmentioning

confidence: 99%

Section: Dyson-schwinger Equationsmentioning

confidence: 99%

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The quark-photon vertex and meson electromagnetic form factors

Maris¹,

Tandy

2000

Nuclear Physics A

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“…In χPT the next term is non-analytic in m q [55]. However, over the relevant mass range, fits to lattice data, as well as fits to Schwinger-Dyson phenomenology [56,57] and a best fit to the χPT expansion, all suggest that…”

Section: The Scalar Polarizability From Lattice Qcdmentioning

confidence: 97%

New insight into nuclear structure from QCD

Thomas¹

2004

Ann. Phys.

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The natural building blocks of atomic nuclei within the framework of QCD are colorless clusters of quarks, with the quantum numbers of nucleons but with internal structure modified by the local mean scalar field. A key parameter of the nucleon in such an approach is the scalar polarizability, which characterizes the response of a nucleon to an applied scalar field. This response leads naturally to 3-, 4-and higher-body effective forces, each proportional to a higher power of the scalar polarizabilty. Recent progress on the important problem of chiral extrapolation of lattice QCD data suggests a way to estimate the scalar polarizability of the nucleon, with initial results consistent with successful phenomenlogical estimates. This may be seen as a first step in the struggle to derive nuclear structure from QCD itself.

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